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Komatsu d65 wx 17 dozer bulldozer service repair manualsn 1001 and up

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This document provides a summary of failure codes related to a bulldozer. It lists various failure codes that may appear, along with a brief description of each code and potential causes. Some examples of failure codes included are: - [15SAL1] Forward clutch:Fill High - Indicates the forward clutch is overfilled with oil. - [CA115] Eng Ne and Bkup Speed Sens Error - Error with the engine speed and backup speed sensors. - [CA144] Coolant Temp Sens High Error - Issue with the coolant temperature sensor reading abnormally high. - [CA322] Inj #1(L#1) Open/Short Error - Open or short

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BULLDOZER SEN05536-01 D65EX -17 D65PX -17 D65WX-17 SERIAL NUMBERS D65EX- 1001 D65PX- 1001 D65WX-1001 and up
00 Index and foreword Index Index 00 Index and foreword .......................................................................................................................00-1 Index .........................................................................................................................................00-2 Foreword, safety and general information ................................................................................... 00-15 Important safety notice ....................................................................................................... 00-15 How to read the shop manual.............................................................................................. 00-20 Explanation of terms for maintenance standard .................................................................... 00-22 Handling of fuel system devices .......................................................................................... 00-24 Handling of intake system parts........................................................................................... 00-25 Handling of hydraulic equipment.......................................................................................... 00-26 Method of disconnecting and connecting push-pull type coupler............................................. 00-28 Handling of electrical equipment.......................................................................................... 00-31 How to read electric wire code............................................................................................. 00-39 Precautions when performing operation ............................................................................... 00-42 Standard tightening torque table.......................................................................................... 00-45 List of abbreviation ............................................................................................................. 00-49 Conversion table................................................................................................................ 00-53 01 Specification.................................................................................................................................01-2 Specifications.............................................................................................................................01-3 Specification drawing ...........................................................................................................01-3 Specifications ......................................................................................................................01-6 Weight table ...................................................................................................................... 01-30 Table of fuel, coolant and lubricants ..................................................................................... 01-38 10 Structure and function ...................................................................................................................10-3 Engine and cooling system..........................................................................................................10-4 Engine related parts .............................................................................................................10-4 Damper...............................................................................................................................10-6 Cooling system ....................................................................................................................10-8 Cooling fan pump............................................................................................................... 10-10 Cooling fan motor............................................................................................................... 10-24 Power train............................................................................................................................... 10-32 Power train........................................................................................................................ 10-32 HSS system ...................................................................................................................... 10-35 Overall drawing of power train unit....................................................................................... 10-37 Power train mount.............................................................................................................. 10-39 Power train hydraulic piping drawing.................................................................................... 10-40 Transmission, steering, and brake control ............................................................................ 10-42 Universal joint.................................................................................................................... 10-44 Torque converter and PTO.................................................................................................. 10-45 Transmission ..................................................................................................................... 10-51 Transmission control valve.................................................................................................. 10-64 Forward and reverse clutch ECMV and gear shift clutch ECMV.............................................. 10-66 Lockup clutch ECMV.......................................................................................................... 10-73 Main relief valve and torque converter relief valve ................................................................. 10-77 Transmission lubricating oil relief valve ................................................................................ 10-80 Bevel gear shaft, HSS, and brake........................................................................................ 10-81 Brake valve ..................................................................................................................... 10-102 Final drive ....................................................................................................................... 10-106 Undercarriage and frame......................................................................................................... 10-110 Main frame ...................................................................................................................... 10-110 Suspension ..................................................................................................................... 10-112 Track frame and idler cushion ........................................................................................... 10-114 Hydraulic system .................................................................................................................... 10-116 Hydraulic piping drawing................................................................................................... 10-116 Work equipment control.................................................................................................... 10-120 Hydraulic tank.................................................................................................................. 10-122 CLSS.............................................................................................................................. 10-124 Scavenging pump ............................................................................................................ 10-127 00-2 D65EX,PX,WX-17
00 Index and foreword Index Steering lubricating oil pump and power train pump............................................................. 10-128 HSS pump....................................................................................................................... 10-129 HSS motor ...................................................................................................................... 10-150 Control valve ................................................................................................................... 10-159 Blade PPC valve.............................................................................................................. 10-186 Ripper PPC valve............................................................................................................. 10-194 Quick drop valve .............................................................................................................. 10-198 Work equipment lock solenoid valve .................................................................................. 10-201 Pitch selector solenoid valve ............................................................................................. 10-206 Angle control EPC valve ................................................................................................... 10-207 Hydraulic oil cooler bypass valve....................................................................................... 10-212 PPC accumulator............................................................................................................. 10-213 Work equipment ..................................................................................................................... 10-214 Work equipment............................................................................................................... 10-214 Ripper............................................................................................................................. 10-217 Piston valve..................................................................................................................... 10-218 Cab and its attachments.......................................................................................................... 10-220 ROPS cab....................................................................................................................... 10-220 Cab mount ...................................................................................................................... 10-222 Electrical system .................................................................................................................... 10-223 Engine control system ...................................................................................................... 10-223 Cooling system control system.......................................................................................... 10-226 Palm command control system.......................................................................................... 10-228 Machine monitor system................................................................................................... 10-232 KOMTRAX system........................................................................................................... 10-252 System component part.................................................................................................... 10-255 Sensors .......................................................................................................................... 10-270 20 Standard value table .....................................................................................................................20-2 Standard service value table........................................................................................................20-3 Standard value table for engine.............................................................................................20-3 Standard value table for machine ..........................................................................................20-5 30 Testing and adjusting ....................................................................................................................30-3 General information on testing and adjusting.................................................................................30-4 Tools for testing, adjusting, and troubleshooting......................................................................30-4 Engine and cooling system..........................................................................................................30-8 Testing engine speed ...........................................................................................................30-8 Measuring boost pressure................................................................................................... 30-10 Measuring exhaust gas temperature.................................................................................... 30-11 Measuring exhaust gas color............................................................................................... 30-13 Measuring and adjusting valve clearance............................................................................. 30-15 Measuring compression pressure........................................................................................ 30-17 Measuring blowby pressure ................................................................................................ 30-19 Measuring engine oil pressure............................................................................................. 30-21 Measuring EGR valve and KVGT oil pressure....................................................................... 30-22 Releasing remaining pressure from fuel system.................................................................... 30-23 Measuring fuel pressure ..................................................................................................... 30-24 Measuring fuel delivery, return rate and leakage ................................................................... 30-31 Handling cylinder cutout mode operation.............................................................................. 30-35 Handling no injection cranking operation .............................................................................. 30-36 Bleeding air from fuel system .............................................................................................. 30-37 Checking fuel circuit for leakage .......................................................................................... 30-38 Testing and adjusting air conditioner compressor belt tension ................................................ 30-39 Replacing alternator belt..................................................................................................... 30-40 Adjusting fuel dial and decelerator pedal .............................................................................. 30-41 Power train system ................................................................................................................... 30-43 Measuring power train oil pressure ...................................................................................... 30-43 Adjusting transmission output shaft speed sensor (replacement procedure)............................ 30-48 Simple test procedure for brake performance ....................................................................... 30-49 Adjusting brake pedal......................................................................................................... 30-50 D65EX,PX,WX-17 00-3
00 Index and foreword Index Adjusting parking brake lever .............................................................................................. 30-52 Retrieval of disabled machine using brake release device ..................................................... 30-54 Undercarriage and frame........................................................................................................... 30-57 Adjusting idler clearance..................................................................................................... 30-57 Checking sprocket wear ..................................................................................................... 30-58 Checking and adjusting track shoe tension........................................................................... 30-59 Hydraulic system ...................................................................................................................... 30-60 Releasing remaining pressure in work equipment cylinder ..................................................... 30-60 Measuring and adjusting work equipment and HSS oil pressure............................................. 30-61 Measuring source pressure of control circuit......................................................................... 30-64 Measuring PPC valve output pressure ................................................................................. 30-65 Adjusting play of work equipment PPC valve ........................................................................ 30-68 Isolating the parts causing hydraulic drift in blade and ripper .................................................. 30-70 Measure internal oil leakage of work equipment cylinder........................................................ 30-71 Checking fan speed ........................................................................................................... 30-72 Measuring fan circuit oil pressure ........................................................................................ 30-73 Bleeding air from hydraulic circuit ........................................................................................ 30-74 Work equipment ....................................................................................................................... 30-76 Adjusting work equipment lock lever .................................................................................... 30-76 Adjustment of straight tilt dozer............................................................................................ 30-77 Cab and its attachments............................................................................................................ 30-79 Adjusting operator's cab ..................................................................................................... 30-79 Adjusting play of blade center ball........................................................................................ 30-82 Electrical system ...................................................................................................................... 30-83 Special functions of machine monitor................................................................................... 30-83 Handling voltage circuit of engine controller........................................................................ 30-143 Adjustment method when controller has been replaced ....................................................... 30-144 Testing diodes ................................................................................................................. 30-146 Pm clinic ................................................................................................................................ 30-147 Pm Clinic service ............................................................................................................. 30-147 Pm Clinic check sheet ...................................................................................................... 30-153 40 Troubleshooting............................................................................................................................40-8 General information on troubleshooting ........................................................................................40-9 Instruction on troubleshooting ...............................................................................................40-9 How to proceed troubleshooting .......................................................................................... 40-11 Check before troubleshooting.............................................................................................. 40-12 Testing procedure before troubleshooting............................................................................. 40-14 Classification and procedure for troubleshooting................................................................... 40-23 Classification and procedures for troubleshooting numbers.................................................... 40-25 Information mentioned in troubleshooting table..................................................................... 40-28 Troubleshooting method for open circuit in wiring harness of pressure sensor system.............. 40-30 Connector list and layout .................................................................................................... 40-32 Connector contact identification........................................................................................... 40-45 T-branch box and T-branch adapter table ............................................................................. 40-82 Fuse locations table ........................................................................................................... 40-88 Precautions for cleaning and replacing KDPF (KCSF, KDOC) ................................................ 40-91 Troubleshooting by failure code (Display of code)........................................................................ 40-93 Failure codes table............................................................................................................. 40-93 Failure code [1500L0] Transmission clutch:Abnormal.......................................................... 40-104 Failure code [15SAL1] Forward clutch:Fill High................................................................... 40-105 Failure code [15SALH] Forward clutch:Fill Low................................................................... 40-107 Failure code [15SBL1] Reverse clutch:Fill High................................................................... 40-109 Failure code [15SBLH] Reverse clutch:Fill Low....................................................................40-111 Failure code [15SEL1] Speed 1st clutch:Fill High ................................................................ 40-113 Failure code [15SELH] Speed 1st clutch:Fill Low ................................................................ 40-115 Failure code [15SFL1] Speed 2nd clutch:Fill High ............................................................... 40-117 Failure code [15SFLH] Speed 2nd clutch:Fill Low ............................................................... 40-119 Failure code [15SGL1] Speed 3rd clutch:Fill High ............................................................... 40-121 Failure code [15SGLH] Speed 3rd clutch:Fill Low................................................................ 40-123 00-4 D65EX,PX,WX-17
00 Index and foreword Index Failure code [15SJL1] L/U :Fill Hihg................................................................................... 40-125 Failure code [15SJLH] L/U :Fill low .................................................................................... 40-127 Failure code [1800MW] P/L clutch:Slip............................................................................... 40-129 Failure code [879AKA] Air Conditioner Inner Sensor Disconnection...................................... 40-130 Failure code [879AKB] Air Conditioner Inner Sensor Disconnection...................................... 40-131 Failure code [879BKA] Air Conditioner Outside Air Sensor Disconnection............................. 40-132 Failure code [879BKB] Air Conditioner Outside Air Sensor Disconnection............................. 40-133 Failure code [879CKA] Ventilating Sensor Disconnection .................................................... 40-134 Failure code [879CKB] Ventilating Sensor Short Circuit ....................................................... 40-135 Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit ............................................. 40-136 Failure code [879EMC] Ventilation Abnormal...................................................................... 40-137 Failure code [879FMC] A/M Damper Abnormal................................................................... 40-138 Failure code [879GKX] Refrigerant Abnormality.................................................................. 40-139 Failure code [989L00] Engine Controller Lock Caution 1...................................................... 40-140 Failure code [989M00] Engine Controller Lock Caution 2..................................................... 40-141 Failure code [989N00] Engine Controller Lock Caution 3 ..................................................... 40-142 Failure code [A1U0N3]: KDPF Dry Request (HC Release)................................................... 40-143 Failure code [A1U0N4] KDPF Dry Request (HC Release).................................................... 40-145 Failure code [AA10NX] Air Cleaner Clogging...................................................................... 40-147 Failure code [AB00KE] Battery Charge Voltage Low ........................................................... 40-148 Failure code [B@BAZG] Engine Oil Pressure Low .............................................................. 40-150 Failure code [B@BCNS] Eng Water Overheat .................................................................... 40-151 Failure code [B@CENS] P/L Oil Overheat.......................................................................... 40-152 Failure code [B@HANS] Hyd Oil Overheat......................................................................... 40-153 Failure code [CA115] Eng Ne and Bkup Speed Sens Error .................................................. 40-154 Failure code [CA122] Chg Air Press Sensor High Error ....................................................... 40-155 Failure code [CA123] Chg Air Press Sensor Low Error ........................................................ 40-157 Failure code [CA131] Throttle Sensor High Error................................................................. 40-159 Failure code [CA132] Throttle Sensor Low Error ................................................................. 40-161 Failure code [CA144] Coolant Temp Sens High Error .......................................................... 40-163 Failure code [CA145] Coolant Temp Sens Low Error ........................................................... 40-165 Failure code [CA153] Chg Air Temp Sensor High Error........................................................ 40-167 Failure code [CA154] Chg Air Temp Sensor Low Error......................................................... 40-169 Failure code [CA187] Sensor 2 Supply Volt Low Error ......................................................... 40-171 Failure code [CA234] Eng Overspeed................................................................................ 40-173 Failure code [CA221] Ambient Press Sens High Error ......................................................... 40-174 Failure code [CA222] Ambient Press Sens Low Error.......................................................... 40-176 Failure code [CA227] Sens Supply 2 Volt High Error ........................................................... 40-178 Failure code [CA238] Ne Speed Sens Supply Volt Error ...................................................... 40-179 Failure code [CA239] Ne Speed Sens Supply Volt High Error............................................... 40-180 Failure code [CA271] IMV/PCV1 Short Error ...................................................................... 40-182 Failure code [CA272] IMV/PCV1 Open Error ...................................................................... 40-184 Failure code [CA281] Pump Press Balance Error................................................................ 40-186 Failure code [CA295] Ambient Pressure Sensor In Range Error........................................... 40-187 Failure code [CA322] Inj #1(L#1) Open/Short Error ............................................................. 40-188 Failure code [CA323] Inj #5 (L#5) Open/Short Error ............................................................ 40-190 Failure code [CA324] Inj #3(L#3) Open/Short Error ............................................................. 40-192 Failure code [CA325] Inj #6 (L#6) Open/Short Error ............................................................ 40-194 Failure code [CA331] Inj #2(L#2) Open/Short Error ............................................................. 40-196 Failure code [CA332] Inj #4 (L#4) Open/Short Error ............................................................ 40-198 Failure code [CA343] ECM Critical Internal Failure.............................................................. 40-200 Failure code [CA351] Injectors Drive Circuit Error ............................................................... 40-201 Failure code [CA352] Sensor 1 Supply Volt Low Error ......................................................... 40-202 Failure code [CA356] Mass Air Flow Sensor High Error ....................................................... 40-204 Failure code [CA357] Mass Air Flow Sensor Low Error........................................................ 40-206 Failure code [CA386] Sens Supply 1 Volt High Error ........................................................... 40-208 Failure code [CA428] Water in Fuel Sensor High Error ........................................................ 40-209 Failure code [CA429] Water in Fuel Sensor Low Error ......................................................... 40-211 Failure code [CA435] Eng Oil Press SW Error .................................................................... 40-213 D65EX,PX,WX-17 00-5
00 Index and foreword Index Failure code [CA441] Battery Voltage Low Error ................................................................. 40-214 Failure code [CA442] Battery Voltage High Error................................................................. 40-216 Failure code [CA449] Rail Press Very High Error................................................................. 40-217 Failure code [CA451] Rail Press Sensor High Error............................................................. 40-219 Failure code [CA452] Rail Press Sensor Low Error ............................................................. 40-221 Failure code [CA488] Chg Air Temp High Torque Derate...................................................... 40-223 Failure code [CA515] Rail Press Sens Sup Volt High Error .................................................. 40-224 Failure code [CA516] Rail Press Sens Sup Volt Low Error ................................................... 40-226 Failure code [CA553] Rail Press High Error ........................................................................ 40-228 Failure code [CA555] Crankcase Press High Error 2 ........................................................... 40-229 Failure code [CA556] Crankcase Pressure High Error 3 ...................................................... 40-230 Failure code [CA559] Rail Pump Press Low Error ............................................................... 40-231 Failure code [CA595] Turbocharger Speed High Error 2 ...................................................... 40-235 Failure code [CA687] Turbo Speed Low Error..................................................................... 40-236 Failure code [CA689] Eng Ne Speed Sensor Error.............................................................. 40-238 Failure code [CA691] Intake Air Temp Sens High Error........................................................ 40-242 Failure code [CA692] Intake Air Temp Sens Low Error......................................................... 40-244 Failure code [CA697] ECM Internal Temp Sensor High Error................................................ 40-246 Failure code [CA698] ECM Internal Temp Sensor Low Error ................................................ 40-247 Failure code [CA731] Eng Bkup Speed Sens Phase Error ................................................... 40-248 Failure code [CA778] Eng Bkup Speed Sensor Error........................................................... 40-250 Failure code [CA1117] Engine Controller Partial Data Lost Error........................................... 40-255 Failure code [CA1664] KDOC Malfunction.......................................................................... 40-256 Failure code [CA1691] Regeneration Ineffective ................................................................. 40-258 Failure code [CA1695] Sensor 5 Supply Volt High Error....................................................... 40-261 Failure code [CA1696] Sensor 5 Supply Volt Low Error ....................................................... 40-262 Failure code [CA1843] Crankcase Press Sens High Error.................................................... 40-264 Failure code [CA1844] Crankcase Press Sens Low Error .................................................... 40-266 Failure code [CA1879] KDPF Delta P Sensor High Error ..................................................... 40-268 Failure code [CA1881] KDPF Delta P Sensor Low Error ...................................................... 40-270 Failure code [CA1883] KDPF Delta P Sens In Range Error.................................................. 40-272 Failure code [CA1921] KDPF Soot Level High Error 1 ......................................................... 40-275 Failure code [CA1922] KDPF Soot Level High Error 2 ......................................................... 40-277 Failure code [CA1942] Crankcase Press Sensor In Range Error .......................................... 40-281 Failure code [CA1993] KDPF Delta Pressure Low Error ...................................................... 40-282 Failure code [CA2185] Throt Sensor Sup Volt High Error ..................................................... 40-283 Failure code [CA2186] Throt Sensor Sup Volt Low Error...................................................... 40-285 Failure code [CA2249] Rail Press Very Low Error ............................................................... 40-287 Failure code [CA2265] Fuel Feed Pump Open Error............................................................ 40-288 Failure code [CA2266] Fuel Feed Pump Short Error............................................................ 40-290 Failure code [CA2271] EGR Valve Pos Sens High Error ...................................................... 40-292 Failure code [CA2272] EGR Valve Pos Sens Low Error....................................................... 40-294 Failure code [CA2288] Turbo Speed High Error 1................................................................ 40-297 Failure code [CA2311] lMV Solenoid Error.......................................................................... 40-298 Failure code [CA2349] EGR Valve Solenoid Open Error ...................................................... 40-299 Failure code [CA2353] EGR Valve Solenoid Short Error ...................................................... 40-301 Failure code [CA2357] EGR Valve Servo Error ................................................................... 40-303 Failure code [CA2373] Exhaust Manifold Press Sens High error........................................... 40-304 Failure code [CA2374] Exhaust Manifold Press Sens Low error ........................................... 40-306 Failure code [CA2375] EGR Orifice Temp Sens High Error .................................................. 40-308 Failure code [CA2376] EGR Orifice Temp Sens Low Error ................................................... 40-310 Failure code [CA2381] KVGT Pos Sens High Error ............................................................. 40-312 Failure code [CA2382] KVGT Pos Sens Low Error.............................................................. 40-314 Failure code [CA2383] KVGT Solenoid Open Error ............................................................. 40-316 Failure code [CA2386] KVGT Solenoid Short Error ............................................................. 40-318 Failure code [CA2387] KVGT Valve Servo Error ................................................................. 40-320 Failure code [CA2554] Exh Manifold Press Sens In Range error .......................................... 40-321 Failure code [CA2555] Grid Htr Relay Volt Low Error........................................................... 40-322 Failure code [CA2556] Grid Htr Relay Volt High Error .......................................................... 40-324 00-6 D65EX,PX,WX-17
00 Index and foreword Index Failure code [CA2637] KDOC Blocked............................................................................... 40-326 Failure code [CA2639] Manual Stationary Regeneration Request......................................... 40-328 Failure code [CA2961] EGR Orifice Temp High Error 1 ........................................................ 40-331 Failure code [CA2973] Chg Air Press Sensor In Range Error ............................................... 40-332 Failure code [CA3133] KDPF Outlet Press Sens High Error................................................. 40-333 Failure code [CA3134] KDPF Outlet Press Sens Low Error.................................................. 40-335 Failure code [CA3135] KDPF Outlet Press Sens In Range Error .......................................... 40-337 Failure code [CA3251] KDOC Inlet Temp High Error............................................................ 40-340 Failure code [CA3253] KDOC Temp Error - Non Regeneration............................................. 40-343 Failure code [CA3254] KDOC Outlet Temp High Error 1 ...................................................... 40-344 Failure code [CA3255] KDPF Temp Error - Non Regeneration.............................................. 40-347 Failure code [CA3256] KDPF Outlet Temp High Error 1 ....................................................... 40-348 Failure code [CA3311] KDOC Outlet Temp High Error 2....................................................... 40-349 Failure code [CA3312] KDPF Outlet Temp High Error 2 ....................................................... 40-350 Failure code [CA3313] KDOC Inlet Temp Sensor Low Error ................................................. 40-353 Failure code [CA3314] KDOC Inlet Temp Sens High Error ................................................... 40-356 Failure code [CA3315] KDOC Inlet Temp Sens In Range Error............................................. 40-360 Failure code [CA3316] KDOC Outlet Temp Sens Low Error ................................................. 40-364 Failure code [CA3317] KDOC Outlet Temp Sens High Error................................................. 40-367 Failure code [CA3318] KDOC Outlet Temp Sens In Range Error .......................................... 40-371 Failure code [CA3319] KDPF Outlet Temp Sens High Error ................................................. 40-375 Failure code [CA3321] KDPF Outlet Temp Sens Low Error .................................................. 40-379 Failure code [CA3322] KDPF Outlet Temp Sens In Range Error........................................... 40-382 Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error ........................................ 40-386 Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error......................................... 40-388 Failure code [CA3741] Rail Press Valve Trip Error............................................................... 40-390 Failure code [D130KA] Neutral relay:Open......................................................................... 40-391 Failure code [D130KB] Neutral relay:Short circuit................................................................ 40-393 Failure code [D19DKA] Amber light relay:Open .................................................................. 40-395 Failure code [D19DKB] Amber light relay:Short circuit ......................................................... 40-397 Failure code [D19JKZ] Personal Code Relay Abnormality.................................................... 40-399 Failure code [D811MC] KOMTRAX Error............................................................................ 40-402 Failure code [D862KA] GPS Antenna Open Circuit ............................................................. 40-403 Failure code [D8ALKA] Operating Lamp Open Circuit(KOMTRAX)....................................... 40-404 Failure code [D8ALKB] Operating Lamp Short Circuit(KOMTRAX) ....................................... 40-406 Failure code [D8AQKR] CAN2 Discon(KOMTRAX)............................................................. 40-407 Failure code [DAF0MB] Monitor Memory Error.................................................................... 40-408 Failure code [DAF0MC] Monitor Malfunction....................................................................... 40-409 Failure code [DAF8KB] Camera Power Supply Short Circuit ................................................ 40-410 Failure code [DAF9KQ] Model Selection Abnormality.......................................................... 40-412 Failure code [DAFGMC] GPS Module Error........................................................................ 40-413 Failure code [DAFLKA] Operating Lamp Open Circuit(Monitor) ............................................ 40-414 Failure code [DAFLKB] Operating Lamp Short Circuit(Monitor) ............................................ 40-416 Failure code [DAFQKR] CAN2 Discon ............................................................................... 40-417 Failure code [DAZ9KQ] A/C Model Selection Abnormality.................................................... 40-418 Failure code [DAZQKR] CAN2 Discon (Aircon ECU) ........................................................... 40-419 Failure code [DB2QKR] CAN2 Discon (Engine Con) ........................................................... 40-423 Failure code [DB2RKR] CAN1 Discon (Engine Con) ........................................................... 40-428 Failure code [DBE0KT] PTcontroller:Abnormality in controller.............................................. 40-433 Failure code [DBE1KK] PTcontroller:Source voltage low..................................................... 40-434 Failure code [DBE2KK] PTcontroller:Output voltage low ..................................................... 40-436 Failure code [DBE5KK] PT:Sensor volt 5V (0) Out of normal range....................................... 40-438 Failure code [DBE6KK] PT:Sensor volt 24V Out of normal range.......................................... 40-440 Failure code [DBE7KK] PT:Sensor volt 5V (1) Out of normal range....................................... 40-442 Failure code [DBE9KQ] PT controller:Type select signal ...................................................... 40-444 Failure code [DBELKA] Operating Lamp Open Circuit(PT Con)............................................ 40-445 Failure code [DBELKB] Operating Lamp Short Circuit(PT Con)............................................ 40-447 Failure code [DBEQKR] CAN2 Discon (PT Con)................................................................. 40-448 Failure code [DBERKR] CAN1 Discon (PT Con) ................................................................. 40-449 D65EX,PX,WX-17 00-7
00 Index and foreword Index Failure code [DD12KA] Shift up Sw:Open .......................................................................... 40-450 Failure code [DD12KB] Shift up Sw:Short circuit ................................................................. 40-452 Failure code [DD13KA] Shift down Sw:Open ...................................................................... 40-454 Failure code [DD13KB] Shift down Sw:Short circuit............................................................. 40-456 Failure code [DD14KA] Parking lever Sw:Open .................................................................. 40-458 Failure code [DD14KB] Parking lever Sw:Short circuit ......................................................... 40-460 Failure code [DDKFL4] Left Angle Sw:Signal mismatch....................................................... 40-462 Failure code [DDKGL4] Right Angle Sw:Signal mismatch .................................................... 40-464 Failure code [DDKHKA] iB Sw:Open.................................................................................. 40-466 Failure code [DDKHKB] iB Sw:Short circuit ........................................................................ 40-468 Failure code [DDN7KA] Weq pitch SW: Open..................................................................... 40-470 Failure code [DDN7KB] Pitch select solenoid:Short circuit ................................................... 40-472 Failure code [DDNLKA] Weq lock Sw:Open ....................................................................... 40-474 Failure code [DDNLKB] Weq lock Sw:Short circuit .............................................................. 40-476 Failure code [DGS1KA] Hyd oil temp sensor:Open ............................................................. 40-478 Failure code [DGS1KX] Hyd oil temp: signal abnormal ........................................................ 40-479 Failure code [DGT1KA] T/C oil temp sensor:Open .............................................................. 40-481 Failure code [DGT1KX] T/C oil temp sensor:Out of normal range ......................................... 40-482 Failure code [DH21KA] Weq pressure sensor:Open............................................................ 40-484 Failure code [DH21KB] Work equipment pressure sensor:Hot Short..................................... 40-486 Failure code [DHA4KA] Air Cleaner Clogging Sensor Open Circuit....................................... 40-488 Failure code [DHTDKA] T/C pressure sensor:Open............................................................. 40-489 Failure code [DHTDKB] T/C pressure sensor:Hot Short....................................................... 40-491 Failure code [DK10KA] Fuel control Dial:Open ................................................................... 40-493 Failure code [DK10KB] Fuel control Dial:Short circuit .......................................................... 40-495 Failure code [DK30KA] ST lever1:Open ............................................................................. 40-497 Failure code [DK30KB] ST lever:Hot Short ......................................................................... 40-499 Failure code [DK30KX] ST lever:Main and Sub Error........................................................... 40-501 Failure code [DK30KZ] ST lever:Main and Sub Error........................................................... 40-502 Failure code [DK30L8] ST lever:Signal mismatch................................................................ 40-503 Failure code [DK31KA] ST lever2:Open ............................................................................. 40-504 Failure code [DK31KB] ST lever2:Hot Short ....................................................................... 40-506 Failure code [DK40KA] Brake potentiometer:Open.............................................................. 40-508 Failure code [DK40KB] Brake potentiometer:Hot Short........................................................ 40-510 Failure code [DK55KX] FR lever:Main and Sub Error .......................................................... 40-512 Failure code [DK55KZ] FR lever:Main and Sub Error........................................................... 40-513 Failure code [DK55L8] FR lever:Signal mismatch ............................................................... 40-514 Failure code [DK56KA] FR lever1:Open............................................................................. 40-515 Failure code [DK56KB] FR lever1:Hot Short ....................................................................... 40-517 Failure code [DK57KA] FR lever2:Open............................................................................. 40-519 Failure code [DK57KB] FR lever2:Hot Short ....................................................................... 40-521 Failure code [DKH1KA] Pitch angle sensor:Open................................................................ 40-523 Failure code [DKH1KB] Pitch angle sensor:Hot Short.......................................................... 40-525 Failure code [DLM3KA] Fan rev. sensor:Open .................................................................... 40-527 Failure code [DLM3MB] Fan control:Mismatch.................................................................... 40-529 Failure code [DLT3KA] T/M out-speed sensor:Open............................................................ 40-530 Failure code [DLT3KB] T/M out-speed sensor:Short circuit .................................................. 40-532 Failure code [DV20KB] Back-up alarm :Short Circuit ........................................................... 40-533 Failure code [DW5AKA] Pitch select solenoid:Disconnection ............................................... 40-535 Failure code [DW5AKB] Pitch select solenoid:Short circuit................................................... 40-536 Failure code [DW5AKY] Pitch select solenoid:Hot short....................................................... 40-537 Failure code [DW7BKA] Fan reverse solenoid:Open ........................................................... 40-539 Failure code [DW7BKB] Fan reverse solenoid:Short circuit.................................................. 40-541 Failure code [DWN1KA] Hss EPC RH:Open....................................................................... 40-542 Failure code [DWN1KB] Hss EPC RH:Short circuit ............................................................. 40-543 Failure code [DWN1KY] Hss EPC RH:Hot short ................................................................. 40-544 Failure code [DWN2KA] Hss EPC LH:Open ....................................................................... 40-546 Failure code [DWN2KB] Hss EPC LH:Short circuit .............................................................. 40-547 Failure code [DWN2KY] Hss EPC LH:Hot short .................................................................. 40-548 00-8 D65EX,PX,WX-17
00 Index and foreword Index Failure code [DWN5KA] Fan pump solenoid 1 :Open .......................................................... 40-550 Failure code [DWN5KB] Fan pump solenoid 1 :Short circuit ................................................. 40-551 Failure code [DWN5KY] Fan pump solenoid 1: Hot short ..................................................... 40-552 Failure code [DXA2KA] TVC solenoid 1: Open ................................................................... 40-554 Failure code [DXA2KB] TVC solenoid 1: Short circuit .......................................................... 40-555 Failure code [DXA2KY] TVC solenoid 1: Hot short .............................................................. 40-556 Failure code [DXH1KA] Lock-up ECMV:Open..................................................................... 40-558 Failure code [DXH1KB] Lock-up ECMV: Short circuit .......................................................... 40-560 Failure code [DXH1KY] Lock-up ECMV: Hot short .............................................................. 40-561 Failure code [DXH4KA] 1st clutch ECMV:Open .................................................................. 40-563 Failure code [DXH4KB] 1st clutch ECMV:Short circuit ......................................................... 40-564 Failure code [DXH4KY] 1st clutch ECMV:Hot short ............................................................. 40-565 Failure code [DXH5KA] 2nd clutch ECMV:Open ................................................................. 40-567 Failure code [DXH5KB] 2nd clutch ECMV:Short circuit ........................................................ 40-568 Failure code [DXH5KY] 2nd clutch ECMV:Hot short ............................................................ 40-569 Failure code [DXH6KA] 3rd clutch ECMV:Open .................................................................. 40-571 Failure code [DXH6KB] 3rd clutch ECMV:Short circuit......................................................... 40-572 Failure code [DXH6KY] 3rd clutch ECMV:Hot short............................................................. 40-573 Failure code [DXH7KA] R clutch ECMV:Open .................................................................... 40-575 Failure code [DXH7KB] R clutch ECMV:Short circuit ........................................................... 40-576 Failure code [DXH7KY] R clutch ECMV:Hot short ............................................................... 40-577 Failure code [DXH8KA] F clutch ECMV:Open..................................................................... 40-579 Failure code [DXH8KB] F clutch ECMV:Short circuit............................................................ 40-580 Failure code [DXH8KY] F clutch ECMV:Hot short................................................................ 40-581 Failure code [DXJ4KA] Weq lock Sol.:Open ....................................................................... 40-583 Failure code [DXJ4KB] Weq lock Sol.:Short circuit .............................................................. 40-585 Failure code [DXJCKA] Blade angle left EPC:Open............................................................. 40-586 Failure code [DXJCKB] Blade angle left EPC:Short circuit ................................................... 40-587 Failure code [DXJCKY] Blade angle left EPC:Hot short ....................................................... 40-588 Failure code [DXJDKA] Blade angle right EPC:Open .......................................................... 40-590 Failure code [DXJDKB] Blade angle right EPC:Short circuit ................................................. 40-591 Failure code [DXJDKY] Blade angle right EPC:Hot short ..................................................... 40-592 Troubleshooting of electrical system (E-mode) .......................................................................... 40-594 E-1 Engine does not start (Engine does not crank).............................................................. 40-594 E-2 Manual preheating does not work ................................................................................ 40-600 E-3 Automatic preheating does not work ............................................................................ 40-603 E-4 While preheating is working, preheating monitor does not light up .................................. 40-605 E-5 When starting switch is turned to ON position, machine monitor displays nothing............. 40-607 E-6 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up ............................................................................................................. 40-610 E-7 Air cleaner clogging monitor lights up in yellow while engine is running ........................... 40-611 E-8 Charge level monitor lights up while engine is running................................................... 40-612 E-9 Engine coolant temperature monitor lights up while engine is running ............................. 40-614 E-10 Engine oil pressure monitor lights up while engine is running ....................................... 40-615 E-11 Power train oil temperature monitor lights up while engine is running ............................ 40-616 E-12 Hydraulic oil temperature monitor lights up while engine is running ............................... 40-617 E-13 Engine coolant temperature gauge does not indicate correct temparature ..................... 40-618 E-14 Fuel level gauge does not indicate correct level .......................................................... 40-619 E-15 Power train oil temperature gauge (multi-gauge) does not indicate correct temperature ....................................................................................................... 40-621 E-16 Hydraulic oil temperature gauge (multi-gauge) does not indicate correct temperature ....................................................................................................... 40-622 E-17 Operation mode does not change.............................................................................. 40-623 E-18 Gearshift mode does not change ............................................................................... 40-624 E-19 Operating customize switch does not display customize screen ................................... 40-625 E-20 Modifying setting on customize screen does not change setting of machine .................. 40-626 E-21 Reverse slow mode does not function properly ........................................................... 40-627 E-22 Alarm buzzer does not sound or does not stop sounding ............................................. 40-628 E-23 While starting switch is in OFF position, service meter is not displayed ......................... 40-629 D65EX,PX,WX-17 00-9
00 Index and foreword Index E-24 Service mode cannot be selected .............................................................................. 40-630 E-25 Horn does not sound ................................................................................................ 40-631 E-26 Horn does not stop sounding..................................................................................... 40-632 E-27 Backup alarm does not sound ................................................................................... 40-633 E-28 Backup alarm does not stop sounding........................................................................ 40-635 E-29 Headlamp does not light up....................................................................................... 40-636 E-30 Rear lamp does not light up....................................................................................... 40-639 E-31 No wiper operates continuously or intermittently.......................................................... 40-641 E-32 Front wiper does not operate (Failure in both continuous and intermittent operations)......................................................................................................... 40-644 E-33 Rear wiper does not operate (Failure in both continuous and intermittent operations)......................................................................................................... 40-647 E-34 Left door wiper does not operate (Failure of both continuous and intermittent operations)......................................................................................................... 40-650 E-35 Right door wiper does not operate (Failure of both continuous and intermittent operations)......................................................................................................... 40-653 E-36 KOMTRAX system does not operate properly............................................................. 40-656 Troubleshooting of hydraulic and mechanical system (H-mode).................................................. 40-658 Information mentioned in troubleshooting table (H mode) .................................................... 40-658 System diagram of hydraulic and mechanical system.......................................................... 40-659 List of Failure Mode and Cause ......................................................................................... 40-661 H-1 Machine lacks power (insufficient drawbar pull) ............................................................ 40-664 H-2 Machine cannot travel (at 2nd or 3rd speed)................................................................. 40-666 H-3 Machine does not start at all gear speeds..................................................................... 40-667 H-4 Machine travels only in one direction, either forward or in reverse .................................. 40-668 H-5 Large time lag at gear shifting or directional selection.................................................... 40-669 H-6 Machine cannot be steered (machine does not turn left or right) ..................................... 40-670 H-7 Steering speed or power is insufficient......................................................................... 40-671 H-8 Brake does not operate .............................................................................................. 40-672 H-9 Torque converter does not lock up............................................................................... 40-673 H-10 Power train oil overheats .......................................................................................... 40-674 H-11 Unusual noise is heard from around HSS and work equipment pump or HSS motor................................................................................................................. 40-675 H-12 All work equipment operates slowly ........................................................................... 40-676 H-13 All work equipment does not operate ......................................................................... 40-677 H-14 Blade lift speed or power is low ................................................................................. 40-678 H-15 Blade tilt speed or power is low ................................................................................. 40-679 H-16 Blade angle speed or power is low............................................................................. 40-680 H-17 Ripper lift speed or power is low ................................................................................ 40-681 H-18 Hydraulic drift of lifted blade is large........................................................................... 40-682 H-19 Hydraulic drift of tilted blade is large........................................................................... 40-683 H-20 Hydraulic drift of lifted ripper is large .......................................................................... 40-684 H-21 Fans speed is abnormal (high, low, or no rotation)....................................................... 40-685 H-22 Unusual noise is heard from around fan ..................................................................... 40-687 Troubleshooting of engine (S-mode)......................................................................................... 40-688 Information contained in troubleshooting table (S mode)...................................................... 40-688 S-1 When starting switch is turned to START position, engine is not cranked......................... 40-689 S-2 The engine cranks but exhaust smoke does not come out ............................................. 40-690 S-3 Fuel is being injected but engine does not start (incomplete combustion: engine cranks but does not start) .................................................................................................... 40-691 S-4 Startability is poor....................................................................................................... 40-692 S-5 Engine does not pick up smoothly ............................................................................... 40-694 S-6 Engine stops during operation..................................................................................... 40-696 S-7 Engine runs rough or is unstable ................................................................................. 40-698 S-8 Engine lacks power .................................................................................................... 40-699 S-9 Exhaust gas is black (KDPF gets clogged in a short time).............................................. 40-701 S-10 Engine oil consumption is excessive .......................................................................... 40-703 S-11 Engine oil becomes contaminated early...................................................................... 40-704 S-12 Fuel consumption is excessive .................................................................................. 40-705 00-10 D65EX,PX,WX-17
00 Index and foreword Index S-13 Oil is in coolant (or coolant spurts or coolant level goes down)...................................... 40-706 S-14 Oil pressure drops.................................................................................................... 40-707 S-15 Fuel mixes into engine oil.......................................................................................... 40-708 S-16 Water mixes into engine oil (milky)............................................................................. 40-709 S-17 Coolant temperature rises too high (overheating) ........................................................ 40-710 S-18 Unusual noise is made ............................................................................................. 40-711 S-19 Vibration is excessive ............................................................................................... 40-712 S-20 Air cannot be bled from fuel circuit ............................................................................. 40-713 S-21 Frequent active regeneration..................................................................................... 40-714 S-22 Active regeneration is long ........................................................................................ 40-715 S-23 White smoke is exhausted during active regeneration ................................................. 40-716 50 Disassembly and assembly ...........................................................................................................50-3 General information on disassembly and assembly........................................................................50-4 How to read this manual .......................................................................................................50-4 Coating materials list ............................................................................................................50-6 Special tool list................................................................................................................... 50-10 Sketches of special tools .................................................................................................... 50-20 Engine and cooling system........................................................................................................ 50-35 Removal and installation of supply pump assembly............................................................... 50-35 Removal and installation of fuel injector assembly................................................................. 50-40 Removal and installation of cylinder head assembly.............................................................. 50-54 Removal and installation of radiator assembly ...................................................................... 50-72 Removal and installation of aftercooler and assembly ........................................................... 50-77 Removal and installation of hydraulic oil cooler assembly ...................................................... 50-80 Removal and installation of power train oil cooler assembly ................................................... 50-82 Removal and installation of cooling fan drive assembly ......................................................... 50-84 Removal and installation of cooling fan motor assembly ........................................................ 50-86 Removal and installation of engine assembly ....................................................................... 50-88 Removal and installation of damper assembly ...................................................................... 50-95 Removal and installation of engine front seal ........................................................................ 50-98 Removal and installation of engine rear seal....................................................................... 50-101 Removal and installation of engine hood assembly ............................................................. 50-109 Removal and installation of fuel tank assembly ....................................................................50-111 Removal and installation of KDPF assembly....................................................................... 50-113 Disassembly and assembly of KDPF ................................................................................. 50-117 Removal and installation of KCCV assembly ...................................................................... 50-125 Removal and installation of air cleaner assembly ................................................................ 50-129 Power train............................................................................................................................. 50-130 Removal and installation of power train unit assembly ......................................................... 50-130 Disconnecting and connecting of power train unit assembly................................................. 50-135 Disassembly and assembly of PTO ................................................................................... 50-140 Disassembly and assembly of torque converter .................................................................. 50-144 Disassembly and assembly of TORQFLOW transmission.................................................... 50-153 Disassembly and assembly of HSS ................................................................................... 50-177 Removal and installation of final drive assembly ................................................................. 50-196 Disassembly and assembly of final drive ............................................................................ 50-198 Undercarriage and frame......................................................................................................... 50-211 Removal and installation of track frame assembly ............................................................... 50-211 Removal and installation of idler assembly ......................................................................... 50-213 Disassembly and assembly of idler.................................................................................... 50-215 Removal and installation of recoil spring assembly.............................................................. 50-219 Disassembly and assembly of recoil spring ........................................................................ 50-220 Removal and installation of track roller assembly ................................................................ 50-224 Disassembly and assembly of track roller........................................................................... 50-225 Removal and installation of carrier roller assembly.............................................................. 50-228 Disassembly and assembly of carrier roller......................................................................... 50-229 Separation and connection of track shoe assembly (Standard type track shoe) ..................... 50-232 Separation and connection of track shoe assembly (PLUS type track shoe) .......................... 50-235 Overall disassembly and assembly of track shoe (standard type track shoe) ......................... 50-236 D65EX,PX,WX-17 00-11
00 Index and foreword Index Overall disassembly and assembly of track shoe (PLUS type track shoe) ............................. 50-249 Disassembly and assembly of one link in field (standard type track shoe).............................. 50-261 Disassembly and assembly of one link in field (PLUS type track shoe).................................. 50-268 Removal and installation of pivot shaft assembly ................................................................ 50-273 Removal and installation of equalizer bar assembly ............................................................ 50-274 Disassembly and assembly of equalizer bar side bushing.................................................... 50-276 Hydraulic system .................................................................................................................... 50-277 Removal and installation of hydraulic tank assembly ........................................................... 50-277 Removal and installation of control valve assembly............................................................. 50-280 Disassembly and assembly of control valve........................................................................ 50-284 Disassembly and assembly of blade PPC valve.................................................................. 50-285 Disassembly and assembly of ripper PPC valve ................................................................. 50-286 Removal and installation of HSS pump and cooling fan pump assembly ............................... 50-287 Removal and installation of steering lubrication pump and power train pump assembly ........................................................................................................... 50-289 Removal and installation of cooling scavenging pump assembly .......................................... 50-291 Removal and installation of HSS motor assembly ............................................................... 50-292 Disassembly and assembly of hydraulic cylinder................................................................. 50-294 Work equipment ..................................................................................................................... 50-300 Removal and installation of blade assembly (ST-TPP dozer)................................................ 50-300 Removal and installation of blade assembly (PAT dozer) ..................................................... 50-302 Removal and installation of ripper assembly ....................................................................... 50-304 Cab and its attachments.......................................................................................................... 50-307 Removal and installation of ROPS cab assembly................................................................ 50-307 Removal and installation of operator's cab glass (adhesion glass)........................................ 50-313 Removal and installation of operator's sea.......................................................................... 50-318 Removal and installation of seat belt.................................................................................. 50-319 Removal and installation of air conditioner unit assembly..................................................... 50-320 Removal and installation of air conditioner compressor assembly......................................... 50-324 Electric system ....................................................................................................................... 50-325 Removal and installation of machine monitor assembly ....................................................... 50-325 Removal and installation of engine controller assembly ....................................................... 50-326 Removal and installation of power train controller assembly................................................. 50-327 Removal and installation of mass air flow and temperature sensor ....................................... 50-329 Removal and installation of KOMTRAX terminal ................................................................. 50-330 60 Maintenance standard...................................................................................................................60-2 Engine and cooling system..........................................................................................................60-3 Engine mount ......................................................................................................................60-3 Damper...............................................................................................................................60-4 Cooling system ....................................................................................................................60-6 Cooling fan pump.................................................................................................................60-7 Cooling fan motor............................................................................................................... 60-10 Power train............................................................................................................................... 60-12 Power train mount.............................................................................................................. 60-12 Universal joint.................................................................................................................... 60-14 Torque converter and PTO.................................................................................................. 60-15 Transmission ..................................................................................................................... 60-18 Transmission control valve.................................................................................................. 60-22 Forward-reverse clutch ECMV and gear shift clutch ECMV .................................................... 60-23 Lockup clutch ECMV.......................................................................................................... 60-24 Main relief valve and torque converter relief valve ................................................................. 60-25 Transmission lubricating oil relief valve ................................................................................ 60-26 Bevel gear shaft, HSS, and brake........................................................................................ 60-27 Brake valve ....................................................................................................................... 60-32 Final drive ......................................................................................................................... 60-33 Sprocket............................................................................................................................ 60-36 Undercarriage and frame........................................................................................................... 60-40 Main frame ........................................................................................................................ 60-41 Suspension ....................................................................................................................... 60-43 00-12 D65EX,PX,WX-17
00 Index and foreword Index Track frame and idler cushion ............................................................................................. 60-45 Idler .................................................................................................................................. 60-47 Track roller ........................................................................................................................ 60-49 Carrier roller ...................................................................................................................... 60-53 Track shoe ........................................................................................................................ 60-55 Hydraulic system ...................................................................................................................... 60-60 Hydraulic tank.................................................................................................................... 60-60 Scavenging pump .............................................................................................................. 60-61 Steering lubricating pump and power train pump................................................................... 60-62 HSS pump......................................................................................................................... 60-63 HSS motor ........................................................................................................................ 60-65 Control valve ..................................................................................................................... 60-67 Blade PPC valve................................................................................................................ 60-74 Ripper PPC valve............................................................................................................... 60-76 Quick drop valve ................................................................................................................ 60-78 Work equipment lock solenoid valve .................................................................................... 60-80 Angle control EPC valve ..................................................................................................... 60-83 Work equipment ....................................................................................................................... 60-84 Work equipment................................................................................................................. 60-84 Cutting edge and end bit..................................................................................................... 60-92 Ripper............................................................................................................................... 60-94 Lift cylinder........................................................................................................................ 60-95 Tilt cylinder ........................................................................................................................ 60-96 Pitch cylinder..................................................................................................................... 60-97 Angle cylinder.................................................................................................................... 60-98 Ripper cylinder................................................................................................................... 60-99 Cab and its attachments.......................................................................................................... 60-100 Cab mount ...................................................................................................................... 60-100 80 Appendix......................................................................................................................................80-2 Air conditioner ............................................................................................................................80-3 Precautions for refrigerant.....................................................................................................80-3 Air conditioner component ....................................................................................................80-4 Configuration and function of refrigeration cycle......................................................................80-7 Outline of refrigeration cycle..................................................................................................80-8 Air conditioner unit ............................................................................................................. 80-10 Dual pressure switch .......................................................................................................... 80-16 Air conditioner controller ..................................................................................................... 80-17 Air conditioner compressor ................................................................................................. 80-18 Condenser ........................................................................................................................ 80-19 Receiver drier .................................................................................................................... 80-20 Sunlight sensor.................................................................................................................. 80-21 Outside air temperature sensor ........................................................................................... 80-22 Procedure for testing and troubleshooting ............................................................................ 80-23 Circuit diagram and arrangement of connector pins............................................................... 80-25 System diagram................................................................................................................. 80-27 Input and output signals of the air conditioner controller......................................................... 80-28 Layout of air conditioner related parts and connectors ........................................................... 80-30 Testing air leakage (duct).................................................................................................... 80-39 Testing with self-diagnosis function...................................................................................... 80-42 How to enter the electrical system abnormality record screen in service mode of machine monitor ................................................................................................................ 80-43 Testing vent (mode) changeover.......................................................................................... 80-45 Testing FRESH/RECIRC air changeover.............................................................................. 80-46 Testing sunlight sensor ....................................................................................................... 80-47 Testing (dual) pressure switch for refrigerant......................................................................... 80-48 Testing relays .................................................................................................................... 80-49 Troubleshooting chart 1 ...................................................................................................... 80-50 Troubleshooting chart 2 ...................................................................................................... 80-51 Information mentioned in troubleshooting table..................................................................... 80-54 D65EX,PX,WX-17 00-13
00 Index and foreword Index Failure code list related to air conditioner.............................................................................. 80-55 Failure code [879AKA] A/C Inner sensor Open Circuit ........................................................... 80-56 Failure code [879AKB] A/C Inner sensor Short Circuit ........................................................... 80-57 Failure code [879BKA] A/C Outer sensor Open Circuit .......................................................... 80-58 Failure code [879BKB] A/C Outer sensor Short Circuit .......................................................... 80-60 Failure code [879CKA] Ventilating sensor Open Circuit ......................................................... 80-62 Failure code [879CKB] Ventilating sensor Short Circuit.......................................................... 80-63 Failure code [879DKZ] Sunlight sensor Open or Short Circuit ................................................ 80-64 Failure code [879EMC] Ventilating Damper Abnormality........................................................ 80-66 Failure code [879FMC] Air Mix Damper Abnormality ............................................................. 80-67 Failure code [879GKX] Refrigerant Abnormality.................................................................... 80-68 A-1 Troubleshooting for power supply system (Air conditioner does not operate) ..................... 80-69 A-2 Troubleshooting for compressor system (Air is not cooled)............................................... 80-71 A-3 Troubleshooting for blower motor system (Air does not come out or air flow is abnormal) ............................................................................................................ 80-74 A-4 Troubleshooting for FRESH/RECIRC air changeover...................................................... 80-76 Troubleshooting with gauge pressure................................................................................... 80-78 Connection of service tool................................................................................................... 80-81 Precautions for disconnecting and connecting air conditioner piping....................................... 80-82 Handling of compressor oil.................................................................................................. 80-84 90 Diagrams and drawings.................................................................................................................90-2 Hydraulic circuit diagram .............................................................................................................90-3 Symbols in hydraulic circuit diagram ......................................................................................90-3 Power train hydraulic circuit diagram......................................................................................90-7 Hydraulic circuit diagram.......................................................................................................90-9 Electric circuit diagram .............................................................................................................. 90-21 Symbols in electric circuit diagram....................................................................................... 90-21 Electric circuit diagram........................................................................................................ 90-25 Electric circuit diagram for air conditioner unit ....................................................................... 90-51 Index.................................................................................................................................................................... 1 00-14 D65EX,PX,WX-17
00 Index and foreword Foreword, safety and general information Foreword, safety and general information Important safety notice (Rev. 2011/02) • Appropriate servicing and repair are extremely important to ensure safe operation of the machine. The Shop Manual describes the effective and safe servicing and repair methods recommended by Komatsu. Some of these methods require the use of special tools designed by Komatsu for the specific purpose. • The symbol mark k is used for such matters that require special precautions during the work. The work indicated with the warning mark should be performed according to the instructions with special attention to the precautions. Should a hazardous situation occur or be anticipated during such work, be sure to keep safe first and take every necessary measure. General precautions kk Inappropriate handling creates an extreme danger. Read and understand what is described in the Operation and Maintenance Manual before operating the machine. In addition read this manual carefully and understand its contents before starting work. • Before performing any greasing or repairs, read all the safety labels stuck to the machine. For the locations of the safety labels and detailed explanation of precautions, see the Operation and Maintenance Manual. • Locate a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt, water, or oil on the floor. Smoke only in the areas provided for smoking. Never smoke while working. • When performing any work, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing. 1. Always wear the protective eyeglasses when hitting parts with a hammer. 2. Always wear the protective eyeglasses when grinding parts with a grinder, etc. • When performing any work with two or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the work. During the work, hang UNDER REPAIR warning tag in the operator's compartment. • Only qualified workers must perform the work and operation which require license or qualification. • Keep all tools in good condition. Learn the correct way to use them, and use the proper ones of them. Before starting work, thoroughly check the tools, machine, forklift truck, service car, etc. • If welding repairs are needed, always have a trained and experienced welder perform the work. When performing welding work, always wear welding gloves, apron, shielding goggles, cap and other clothes suited for welding work. • Before starting work, warm up your body thoroughly to start work under good condition. • Avoid continuing work for long hours and take rests at proper intervals to keep your body in good condition. Take rests in specified safe places. Safety points 1 Good arrangement 2 Correct work clothes 3 Following work standard 4 Making and checking signals 5 Prohibition of operation and handling by unlicensed workers 6 Safety check before starting work 7 Wearing protective goggles (for cleaning or grinding work) 8 Wearing shielding goggles and protectors (for welding work) 9 Good physical condition and preparation 10 Precautions against work which you are not used to or you are used to too much Preparation work • Before adding oil or making any repairs, park the machine on a hard and level ground, and apply the parking brake and chock the wheels or tracks to prevent the machine from moving. • Before starting work, lower the work equipment (blade, ripper, bucket, etc.) to the ground. If this is not possible, insert the lock pin or use blocks to prevent the work equipment from falling. In addition, be sure to lock all the control levers and hang warning tag on them. • When disassembling or assembling, support the machine with blocks, jacks, or stands before starting the work. • Remove all mud and oil from the steps or other places used to get on and off the machine. Always use the handrails, ladders or steps when getting on or off the machine. Never jump on or off the machine. When a scaffolding is not D65EX,PX,WX-17 00-15
00 Index and foreword Foreword, safety and general information provided, use steps or a step ladder to secure your footing. Precautions during work • For the machine equipped with a battery disconnect switch, before starting the work, check that the system operating lamp is turned OFF, and then turn the battery disconnect switch to the OFF (Q) position and pull the switch key out. For machines without a battery disconnect switch, before starting the work, remove the cables from the battery. Always remove the cable from the negative (–) terminal first. • Before disconnecting or removing components of the oil, water, or air circuits, first release the remaining pressure completely from the circuit. When removing the oil filter cap, a drain plug, or an oil pressure pickup plug, loosen it slowly to prevent the oil from spurting out. • The coolant and oil in the circuits are hot when the engine is shut down. Be careful not to get scalded. Wait for the oil and coolant to cool before performing any work on the oil or water circuits. • Before starting work, shut down the engine. When working on or around a rotating part, in particular, shut down the engine. When checking the machine without stopping the engine (measuring oil pressure, revolving speed, temperature, etc.), take extreme care not to get rolled or caught in rotating parts or moving parts. • When raising a heavy component (heavier than 25 kg), use a hoist or crane. Before starting work, check that the slings (wire ropes, chains, and hooks) are free from damage. Always use slings which have ample capacity and install them to proper places. Operate the hoist or crane slowly to prevent the component from hitting any other part. Do not work with any part still raised by the hoist or crane. • When removing a cover which is under internal pressure or under reaction force of a spring, always leave two bolts in diagonal positions. Loosen those two bolts gradually and alternately to release the pressure, and then remove the cover. • When removing components, be careful not to break or damage the electrical wiring. Damaged wiring may cause electrical fires. • When removing piping, stop the fuel or oil from spilling out. If any fuel or oil drips onto the floor, wipe it off immediately. Fuel or oil on the floor can cause you to slip and can even cause fires. • As a general rule, do not use gasoline to wash parts. Do not use it to clean electrical parts, in particular. • Be sure to assemble all parts again in their original places. Replace any damaged parts and parts which must not be reused with new parts. When installing hoses and wires, be sure that they will not be damaged by contact with other parts when the machine is operated. • When installing high pressure hoses and tubes, make sure that they are not twisted. Damaged hoses and tubes are dangerous, so be extremely careful when installing hoses and tubes for high-pressure circuits. In addition, check that connections of them are correct. • When assembling or installing parts, always tighten them to the specified torques. When installing protective parts such as guards, or parts which vibrate violently or rotate at high speeds, be particularly careful to check that they are installed correctly. • When aligning two holes, never insert your fingers or hand. Be careful not to get your fingers caught in a hole. • When measuring hydraulic pressure, check that the measuring tools are correctly installed. • Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates suddenly, so never let anyone stand at either end of the track. • If the engine is operated for a long time in a place which is not ventilated well, you may suffer from gas poisoning. Accordingly, open the windows and doors to ventilate well. Precautions for slinging work and making signals • Only one appointed worker must make signals and co-workers must communicate with each other frequently. The appointed signaler must make specified signals clearly at a place where he (she) is well seen from the operator's seat and where he (she) can see the working condition easily. The signaler must always stand in front of the load and guide the operator safely. 1. Do not stand under the load. 2. Do not step on the load. • Check the slings before starting sling work. • Keep putting on gloves during sling work. (Put on leather gloves, if available.) • Measure the weight of the load by the eye and check its center of gravity. • Use proper sling according to the weight of the load and method of slinging. If too thick wire ropes are used to sling a light load, the load may slip and fall. • Do not sling a load with one wire rope alone. If it is slung by one wire rope, It may rotate and slip out of the rope. Install two or more wire ropes symmetrically. k Slinging with one rope may cause turning of the load during hoisting, untwisting of the rope, or slipping of the rope from its original 00-16 D65EX,PX,WX-17
10 Structure and function Engine related parts Engine and cooling system Engine related parts 1. Auto-tentioner 10-4 D65EX,PX,WX-17
10 Structure and function Engine related parts 2. KDPF(*1) 3. Dust indicator 4. Air cleaner (*1) 5. KCCV ventilator (*1) 6. Rear engine mount 7. Fuel filter 8. Front engine mount 9. Drain plug 10. Vibration damper (*1) 11. KVGT(*1) 12. Engine oil filter 13. EGR cooler (*1) *1: For the details, see Engine Shop Manual. Function • KVGT (11) is a turbocharger which can vary the cross-sectional area in the exhaust circuit. • EGR cooler (13) is a device which cools the exhaust gas with the coolant. • KGPF (2) is a device which has KDOC (catalyzer) and KCSF (filter to catch soot) for purification of the exhaust gas. • KCCV ventilator (5) is a mechanism which mainly consists of filters and separates oil from blowby gas to return the gas to the air intake side for afterburning. D65EX,PX,WX-17 10-5
10 Structure and function Damper Damper 1. Breather 2. Oil filler plug 3. Inspection plug 10-6 D65EX,PX,WX-17
10 Structure and function Damper 4. Drain plug 5. Damper case 6. Coupling 7. Shaft 8. Bearing 9. Drive plate 10. Friction plate 11. Friction spring 12. Stopper pin 13. Hub 14. Cover Specifications Type Wet, friction spring type Stopper angle (deg.) 4 Stopper torque (Nm {kgm}) 2,685 {274} Function • The damper protects the power train (such as the torque converter and transmission) by buffering torsional vibrations resulting from fluctuations in engine torque or impact torque resulting from sudden acceleration or heavy duty operation. D65EX,PX,WX-17 10-7
10 Structure and function Cooling system Cooling system 1. Cooling fan motor 2. Radiator cap 3. Cooling fan 10-8 D65EX,PX,WX-17
10 Structure and function Cooling system 4. After cooler 5. Aftercooler inlet hose 6. Hydraulic oil cooler inlet 7. Hydraulic oil cooler outlet 8. Power train oil cooler inlet 9. Power train oil cooler outlet 10. Aftercooler outlet hose 11. Hydraulic oil cooler 12. Radiator inlet hose 13. Reservoir tank 14. Radiator 2 15. Radiator 1 16. Radiator outlet hose 17. Power train oil cooler outlet hose 18. Drain plug 19. Power train oil cooler 20. Hydraulic oil cooler bypass valve Specifications Radiator 1 Radiator 2 Power train oil cooler Hydraulic oil cooler Aftercooler Core type Corrugated aluminum Corrugated aluminum PTO-OL Corrugated aluminum Corrugated aluminum Fin pitch (mm) 8.0/2 8.0/2 – 8.0/2 8.0/2 Total heat dissipation area (m2) 61.88 27.20 1.722 2.98 15.89 Pressure valve cracking pressure (kPa {kg/cm2}) 88.3 ± 14.7 {0.9 ± 0.15} 88.3 ± 14.7 {0.9 ± 0.15} – – – Vacuum valve cracking pressure (kPa {kg/cm2}) 0 to 4.9 {0 to 0.05} 0 to 4.9 {0 to 0.05} – – – D65EX,PX,WX-17 10-9
10 Structure and function Cooling fan pump Cooling fan pump P1: Pump delivery port PCEPC: EPC output pressure pickup port PEPC: EPC valve source pressure pickup port PR1: Self-pressure reducing valve output port PS: Pump suction port T0: Drain port T1: Drain plug 1. Servo valve 10-10 D65EX,PX,WX-17
10 Structure and function Cooling fan pump 2. Self-pressure reducing valve 1. Shaft 2. Oil seal 3. Spring 4. Servo piston 5. Case 6. Rocker cam 7. Shoe 8. Piston 9. Cylinder block 10. Valve plate 11. Ball retainer 12. Valve 13. Spring D65EX,PX,WX-17 10-11
10 Structure and function Cooling fan pump Structure • Cylinder block (7) is supported to shaft (1) by spline (a). Shaft (1) is supported by each bearings at the front and rear. • The tip of piston (6) is shaped as a concave sphere and is crimped with shoe (5). Piston (6) and shoe (5) constitute a spherical bearing. • Rocker cam (4) has flat surface (A) and shoe (5) is always pressed against this surface while sliding in a circular pattern. • Rocker cam (4) pivot on ball retainer (11). • Piston (6) performs reciprocal motion in the axial direction inside each cylinder chamber of cylinder block (7). • Cylinder block (7) seals the pressurized oil to valve plate (8) and performs relative rotation. The oil pressure balance on the valve plate is maintained properly. • The pressurized oil is sucked in and discharged from each cylinder chamber in cylinder block (7) through valve plate (8). Specifications Model LPV30 Type Variable displacement swash plate type Piston pump Theoretical delivery (cm3/rev) 30 Rated delivery pressure (MPa {kg/cm2) 24.5 {250} Rated speed (rpm) 2,280 10-12 D65EX,PX,WX-17
Thank you very much for your reading. Please Click Here. Then Get COMPLETE MANUAL. NO WAITING NOTE: If there is no response to click on the link above, please download the PDF document first and then click on it.
10 Structure and function Cooling fan pump Function • The pump converts the engine speed and torque transmitted to its shaft into oil pressure and delivers pressurized oil corresponding to the load. • It is possible to change the delivery by changing the swash plate angle. Operation Operation of pump • Cylinder block (7) rotates together with shaft (1) and shoe (5) slides on plane (A). • Rocker cam (4) tilts around ball retainer (11), and as a result angle (a) between center line (X) of rocker cam (4) and the axis of cylinder block (7) changes. • Angle (a) is called the swash plate angle. • If swash plate angle (a) is made between center line (x) of rocker cam (4) and the axis of cylinder block (7), plane (A) functions as a cam against shoe (5). • Piston (6) reciprocates inside cylinder block (7) and a difference is made between volumes (E) and (F) in cylinder block (7). Each piston (6) sucks and discharges oil by (F) - (E) • Oil is discharged while cylinder block (7) rotates and the volume of chamber (E) decreases. The volume of chamber (F) grows larger and, in this process, the oil is sucked. [In the figure, chamber (F) is at the end of the suction stroke and chamber (E) is at the end of the discharge stroke.]] D65EX,PX,WX-17 10-13
10 Structure and function Cooling fan pump • As center line (X) of rocker cam (4) matches the axis of cylinder block (7) (swash plate angle = 0), the difference between volumes (E) and (F) inside cylinder block (7) equals 0. The pump does not carry out any suction or discharge of oil. (Actually, however, the swash plate angle is not set to 0 deg.) • Pump delivery is in proportion to the swash plate angle (a). Control of delivery 10-14 D65EX,PX,WX-17
10 Structure and function Cooling fan pump • If swash plate angle (a) increases, the difference between volumes (E) and (F) increases, and delivery (Q) increases. Swash plate angle (a) is changed by servo piston (10). • Servo piston (10) moves in a linear reciprocating movement according to the signal pressure of the servo valve. This linear movement is transmitted to rocker cam (4), which is supported by and pivots on ball retainer (11). Servo valve P: EPC valve source pressure port PE: Control piston pressure PH: Pump delivery pressure PCEPC: EPC output pressure pickup plug PEPC: EPC valve source pressure pickup plug T: Drain 1. Plug 2. Lever 3. Retainer D65EX,PX,WX-17 10-15

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Komatsu d65 wx 17 dozer bulldozer service repair manualsn 1001 and up

  • 1. BULLDOZER SEN05536-01 D65EX -17 D65PX -17 D65WX-17 SERIAL NUMBERS D65EX- 1001 D65PX- 1001 D65WX-1001 and up
  • 2. 00 Index and foreword Index Index 00 Index and foreword .......................................................................................................................00-1 Index .........................................................................................................................................00-2 Foreword, safety and general information ................................................................................... 00-15 Important safety notice ....................................................................................................... 00-15 How to read the shop manual.............................................................................................. 00-20 Explanation of terms for maintenance standard .................................................................... 00-22 Handling of fuel system devices .......................................................................................... 00-24 Handling of intake system parts........................................................................................... 00-25 Handling of hydraulic equipment.......................................................................................... 00-26 Method of disconnecting and connecting push-pull type coupler............................................. 00-28 Handling of electrical equipment.......................................................................................... 00-31 How to read electric wire code............................................................................................. 00-39 Precautions when performing operation ............................................................................... 00-42 Standard tightening torque table.......................................................................................... 00-45 List of abbreviation ............................................................................................................. 00-49 Conversion table................................................................................................................ 00-53 01 Specification.................................................................................................................................01-2 Specifications.............................................................................................................................01-3 Specification drawing ...........................................................................................................01-3 Specifications ......................................................................................................................01-6 Weight table ...................................................................................................................... 01-30 Table of fuel, coolant and lubricants ..................................................................................... 01-38 10 Structure and function ...................................................................................................................10-3 Engine and cooling system..........................................................................................................10-4 Engine related parts .............................................................................................................10-4 Damper...............................................................................................................................10-6 Cooling system ....................................................................................................................10-8 Cooling fan pump............................................................................................................... 10-10 Cooling fan motor............................................................................................................... 10-24 Power train............................................................................................................................... 10-32 Power train........................................................................................................................ 10-32 HSS system ...................................................................................................................... 10-35 Overall drawing of power train unit....................................................................................... 10-37 Power train mount.............................................................................................................. 10-39 Power train hydraulic piping drawing.................................................................................... 10-40 Transmission, steering, and brake control ............................................................................ 10-42 Universal joint.................................................................................................................... 10-44 Torque converter and PTO.................................................................................................. 10-45 Transmission ..................................................................................................................... 10-51 Transmission control valve.................................................................................................. 10-64 Forward and reverse clutch ECMV and gear shift clutch ECMV.............................................. 10-66 Lockup clutch ECMV.......................................................................................................... 10-73 Main relief valve and torque converter relief valve ................................................................. 10-77 Transmission lubricating oil relief valve ................................................................................ 10-80 Bevel gear shaft, HSS, and brake........................................................................................ 10-81 Brake valve ..................................................................................................................... 10-102 Final drive ....................................................................................................................... 10-106 Undercarriage and frame......................................................................................................... 10-110 Main frame ...................................................................................................................... 10-110 Suspension ..................................................................................................................... 10-112 Track frame and idler cushion ........................................................................................... 10-114 Hydraulic system .................................................................................................................... 10-116 Hydraulic piping drawing................................................................................................... 10-116 Work equipment control.................................................................................................... 10-120 Hydraulic tank.................................................................................................................. 10-122 CLSS.............................................................................................................................. 10-124 Scavenging pump ............................................................................................................ 10-127 00-2 D65EX,PX,WX-17
  • 3. 00 Index and foreword Index Steering lubricating oil pump and power train pump............................................................. 10-128 HSS pump....................................................................................................................... 10-129 HSS motor ...................................................................................................................... 10-150 Control valve ................................................................................................................... 10-159 Blade PPC valve.............................................................................................................. 10-186 Ripper PPC valve............................................................................................................. 10-194 Quick drop valve .............................................................................................................. 10-198 Work equipment lock solenoid valve .................................................................................. 10-201 Pitch selector solenoid valve ............................................................................................. 10-206 Angle control EPC valve ................................................................................................... 10-207 Hydraulic oil cooler bypass valve....................................................................................... 10-212 PPC accumulator............................................................................................................. 10-213 Work equipment ..................................................................................................................... 10-214 Work equipment............................................................................................................... 10-214 Ripper............................................................................................................................. 10-217 Piston valve..................................................................................................................... 10-218 Cab and its attachments.......................................................................................................... 10-220 ROPS cab....................................................................................................................... 10-220 Cab mount ...................................................................................................................... 10-222 Electrical system .................................................................................................................... 10-223 Engine control system ...................................................................................................... 10-223 Cooling system control system.......................................................................................... 10-226 Palm command control system.......................................................................................... 10-228 Machine monitor system................................................................................................... 10-232 KOMTRAX system........................................................................................................... 10-252 System component part.................................................................................................... 10-255 Sensors .......................................................................................................................... 10-270 20 Standard value table .....................................................................................................................20-2 Standard service value table........................................................................................................20-3 Standard value table for engine.............................................................................................20-3 Standard value table for machine ..........................................................................................20-5 30 Testing and adjusting ....................................................................................................................30-3 General information on testing and adjusting.................................................................................30-4 Tools for testing, adjusting, and troubleshooting......................................................................30-4 Engine and cooling system..........................................................................................................30-8 Testing engine speed ...........................................................................................................30-8 Measuring boost pressure................................................................................................... 30-10 Measuring exhaust gas temperature.................................................................................... 30-11 Measuring exhaust gas color............................................................................................... 30-13 Measuring and adjusting valve clearance............................................................................. 30-15 Measuring compression pressure........................................................................................ 30-17 Measuring blowby pressure ................................................................................................ 30-19 Measuring engine oil pressure............................................................................................. 30-21 Measuring EGR valve and KVGT oil pressure....................................................................... 30-22 Releasing remaining pressure from fuel system.................................................................... 30-23 Measuring fuel pressure ..................................................................................................... 30-24 Measuring fuel delivery, return rate and leakage ................................................................... 30-31 Handling cylinder cutout mode operation.............................................................................. 30-35 Handling no injection cranking operation .............................................................................. 30-36 Bleeding air from fuel system .............................................................................................. 30-37 Checking fuel circuit for leakage .......................................................................................... 30-38 Testing and adjusting air conditioner compressor belt tension ................................................ 30-39 Replacing alternator belt..................................................................................................... 30-40 Adjusting fuel dial and decelerator pedal .............................................................................. 30-41 Power train system ................................................................................................................... 30-43 Measuring power train oil pressure ...................................................................................... 30-43 Adjusting transmission output shaft speed sensor (replacement procedure)............................ 30-48 Simple test procedure for brake performance ....................................................................... 30-49 Adjusting brake pedal......................................................................................................... 30-50 D65EX,PX,WX-17 00-3
  • 4. 00 Index and foreword Index Adjusting parking brake lever .............................................................................................. 30-52 Retrieval of disabled machine using brake release device ..................................................... 30-54 Undercarriage and frame........................................................................................................... 30-57 Adjusting idler clearance..................................................................................................... 30-57 Checking sprocket wear ..................................................................................................... 30-58 Checking and adjusting track shoe tension........................................................................... 30-59 Hydraulic system ...................................................................................................................... 30-60 Releasing remaining pressure in work equipment cylinder ..................................................... 30-60 Measuring and adjusting work equipment and HSS oil pressure............................................. 30-61 Measuring source pressure of control circuit......................................................................... 30-64 Measuring PPC valve output pressure ................................................................................. 30-65 Adjusting play of work equipment PPC valve ........................................................................ 30-68 Isolating the parts causing hydraulic drift in blade and ripper .................................................. 30-70 Measure internal oil leakage of work equipment cylinder........................................................ 30-71 Checking fan speed ........................................................................................................... 30-72 Measuring fan circuit oil pressure ........................................................................................ 30-73 Bleeding air from hydraulic circuit ........................................................................................ 30-74 Work equipment ....................................................................................................................... 30-76 Adjusting work equipment lock lever .................................................................................... 30-76 Adjustment of straight tilt dozer............................................................................................ 30-77 Cab and its attachments............................................................................................................ 30-79 Adjusting operator's cab ..................................................................................................... 30-79 Adjusting play of blade center ball........................................................................................ 30-82 Electrical system ...................................................................................................................... 30-83 Special functions of machine monitor................................................................................... 30-83 Handling voltage circuit of engine controller........................................................................ 30-143 Adjustment method when controller has been replaced ....................................................... 30-144 Testing diodes ................................................................................................................. 30-146 Pm clinic ................................................................................................................................ 30-147 Pm Clinic service ............................................................................................................. 30-147 Pm Clinic check sheet ...................................................................................................... 30-153 40 Troubleshooting............................................................................................................................40-8 General information on troubleshooting ........................................................................................40-9 Instruction on troubleshooting ...............................................................................................40-9 How to proceed troubleshooting .......................................................................................... 40-11 Check before troubleshooting.............................................................................................. 40-12 Testing procedure before troubleshooting............................................................................. 40-14 Classification and procedure for troubleshooting................................................................... 40-23 Classification and procedures for troubleshooting numbers.................................................... 40-25 Information mentioned in troubleshooting table..................................................................... 40-28 Troubleshooting method for open circuit in wiring harness of pressure sensor system.............. 40-30 Connector list and layout .................................................................................................... 40-32 Connector contact identification........................................................................................... 40-45 T-branch box and T-branch adapter table ............................................................................. 40-82 Fuse locations table ........................................................................................................... 40-88 Precautions for cleaning and replacing KDPF (KCSF, KDOC) ................................................ 40-91 Troubleshooting by failure code (Display of code)........................................................................ 40-93 Failure codes table............................................................................................................. 40-93 Failure code [1500L0] Transmission clutch:Abnormal.......................................................... 40-104 Failure code [15SAL1] Forward clutch:Fill High................................................................... 40-105 Failure code [15SALH] Forward clutch:Fill Low................................................................... 40-107 Failure code [15SBL1] Reverse clutch:Fill High................................................................... 40-109 Failure code [15SBLH] Reverse clutch:Fill Low....................................................................40-111 Failure code [15SEL1] Speed 1st clutch:Fill High ................................................................ 40-113 Failure code [15SELH] Speed 1st clutch:Fill Low ................................................................ 40-115 Failure code [15SFL1] Speed 2nd clutch:Fill High ............................................................... 40-117 Failure code [15SFLH] Speed 2nd clutch:Fill Low ............................................................... 40-119 Failure code [15SGL1] Speed 3rd clutch:Fill High ............................................................... 40-121 Failure code [15SGLH] Speed 3rd clutch:Fill Low................................................................ 40-123 00-4 D65EX,PX,WX-17
  • 5. 00 Index and foreword Index Failure code [15SJL1] L/U :Fill Hihg................................................................................... 40-125 Failure code [15SJLH] L/U :Fill low .................................................................................... 40-127 Failure code [1800MW] P/L clutch:Slip............................................................................... 40-129 Failure code [879AKA] Air Conditioner Inner Sensor Disconnection...................................... 40-130 Failure code [879AKB] Air Conditioner Inner Sensor Disconnection...................................... 40-131 Failure code [879BKA] Air Conditioner Outside Air Sensor Disconnection............................. 40-132 Failure code [879BKB] Air Conditioner Outside Air Sensor Disconnection............................. 40-133 Failure code [879CKA] Ventilating Sensor Disconnection .................................................... 40-134 Failure code [879CKB] Ventilating Sensor Short Circuit ....................................................... 40-135 Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit ............................................. 40-136 Failure code [879EMC] Ventilation Abnormal...................................................................... 40-137 Failure code [879FMC] A/M Damper Abnormal................................................................... 40-138 Failure code [879GKX] Refrigerant Abnormality.................................................................. 40-139 Failure code [989L00] Engine Controller Lock Caution 1...................................................... 40-140 Failure code [989M00] Engine Controller Lock Caution 2..................................................... 40-141 Failure code [989N00] Engine Controller Lock Caution 3 ..................................................... 40-142 Failure code [A1U0N3]: KDPF Dry Request (HC Release)................................................... 40-143 Failure code [A1U0N4] KDPF Dry Request (HC Release).................................................... 40-145 Failure code [AA10NX] Air Cleaner Clogging...................................................................... 40-147 Failure code [AB00KE] Battery Charge Voltage Low ........................................................... 40-148 Failure code [B@BAZG] Engine Oil Pressure Low .............................................................. 40-150 Failure code [B@BCNS] Eng Water Overheat .................................................................... 40-151 Failure code [B@CENS] P/L Oil Overheat.......................................................................... 40-152 Failure code [B@HANS] Hyd Oil Overheat......................................................................... 40-153 Failure code [CA115] Eng Ne and Bkup Speed Sens Error .................................................. 40-154 Failure code [CA122] Chg Air Press Sensor High Error ....................................................... 40-155 Failure code [CA123] Chg Air Press Sensor Low Error ........................................................ 40-157 Failure code [CA131] Throttle Sensor High Error................................................................. 40-159 Failure code [CA132] Throttle Sensor Low Error ................................................................. 40-161 Failure code [CA144] Coolant Temp Sens High Error .......................................................... 40-163 Failure code [CA145] Coolant Temp Sens Low Error ........................................................... 40-165 Failure code [CA153] Chg Air Temp Sensor High Error........................................................ 40-167 Failure code [CA154] Chg Air Temp Sensor Low Error......................................................... 40-169 Failure code [CA187] Sensor 2 Supply Volt Low Error ......................................................... 40-171 Failure code [CA234] Eng Overspeed................................................................................ 40-173 Failure code [CA221] Ambient Press Sens High Error ......................................................... 40-174 Failure code [CA222] Ambient Press Sens Low Error.......................................................... 40-176 Failure code [CA227] Sens Supply 2 Volt High Error ........................................................... 40-178 Failure code [CA238] Ne Speed Sens Supply Volt Error ...................................................... 40-179 Failure code [CA239] Ne Speed Sens Supply Volt High Error............................................... 40-180 Failure code [CA271] IMV/PCV1 Short Error ...................................................................... 40-182 Failure code [CA272] IMV/PCV1 Open Error ...................................................................... 40-184 Failure code [CA281] Pump Press Balance Error................................................................ 40-186 Failure code [CA295] Ambient Pressure Sensor In Range Error........................................... 40-187 Failure code [CA322] Inj #1(L#1) Open/Short Error ............................................................. 40-188 Failure code [CA323] Inj #5 (L#5) Open/Short Error ............................................................ 40-190 Failure code [CA324] Inj #3(L#3) Open/Short Error ............................................................. 40-192 Failure code [CA325] Inj #6 (L#6) Open/Short Error ............................................................ 40-194 Failure code [CA331] Inj #2(L#2) Open/Short Error ............................................................. 40-196 Failure code [CA332] Inj #4 (L#4) Open/Short Error ............................................................ 40-198 Failure code [CA343] ECM Critical Internal Failure.............................................................. 40-200 Failure code [CA351] Injectors Drive Circuit Error ............................................................... 40-201 Failure code [CA352] Sensor 1 Supply Volt Low Error ......................................................... 40-202 Failure code [CA356] Mass Air Flow Sensor High Error ....................................................... 40-204 Failure code [CA357] Mass Air Flow Sensor Low Error........................................................ 40-206 Failure code [CA386] Sens Supply 1 Volt High Error ........................................................... 40-208 Failure code [CA428] Water in Fuel Sensor High Error ........................................................ 40-209 Failure code [CA429] Water in Fuel Sensor Low Error ......................................................... 40-211 Failure code [CA435] Eng Oil Press SW Error .................................................................... 40-213 D65EX,PX,WX-17 00-5
  • 6. 00 Index and foreword Index Failure code [CA441] Battery Voltage Low Error ................................................................. 40-214 Failure code [CA442] Battery Voltage High Error................................................................. 40-216 Failure code [CA449] Rail Press Very High Error................................................................. 40-217 Failure code [CA451] Rail Press Sensor High Error............................................................. 40-219 Failure code [CA452] Rail Press Sensor Low Error ............................................................. 40-221 Failure code [CA488] Chg Air Temp High Torque Derate...................................................... 40-223 Failure code [CA515] Rail Press Sens Sup Volt High Error .................................................. 40-224 Failure code [CA516] Rail Press Sens Sup Volt Low Error ................................................... 40-226 Failure code [CA553] Rail Press High Error ........................................................................ 40-228 Failure code [CA555] Crankcase Press High Error 2 ........................................................... 40-229 Failure code [CA556] Crankcase Pressure High Error 3 ...................................................... 40-230 Failure code [CA559] Rail Pump Press Low Error ............................................................... 40-231 Failure code [CA595] Turbocharger Speed High Error 2 ...................................................... 40-235 Failure code [CA687] Turbo Speed Low Error..................................................................... 40-236 Failure code [CA689] Eng Ne Speed Sensor Error.............................................................. 40-238 Failure code [CA691] Intake Air Temp Sens High Error........................................................ 40-242 Failure code [CA692] Intake Air Temp Sens Low Error......................................................... 40-244 Failure code [CA697] ECM Internal Temp Sensor High Error................................................ 40-246 Failure code [CA698] ECM Internal Temp Sensor Low Error ................................................ 40-247 Failure code [CA731] Eng Bkup Speed Sens Phase Error ................................................... 40-248 Failure code [CA778] Eng Bkup Speed Sensor Error........................................................... 40-250 Failure code [CA1117] Engine Controller Partial Data Lost Error........................................... 40-255 Failure code [CA1664] KDOC Malfunction.......................................................................... 40-256 Failure code [CA1691] Regeneration Ineffective ................................................................. 40-258 Failure code [CA1695] Sensor 5 Supply Volt High Error....................................................... 40-261 Failure code [CA1696] Sensor 5 Supply Volt Low Error ....................................................... 40-262 Failure code [CA1843] Crankcase Press Sens High Error.................................................... 40-264 Failure code [CA1844] Crankcase Press Sens Low Error .................................................... 40-266 Failure code [CA1879] KDPF Delta P Sensor High Error ..................................................... 40-268 Failure code [CA1881] KDPF Delta P Sensor Low Error ...................................................... 40-270 Failure code [CA1883] KDPF Delta P Sens In Range Error.................................................. 40-272 Failure code [CA1921] KDPF Soot Level High Error 1 ......................................................... 40-275 Failure code [CA1922] KDPF Soot Level High Error 2 ......................................................... 40-277 Failure code [CA1942] Crankcase Press Sensor In Range Error .......................................... 40-281 Failure code [CA1993] KDPF Delta Pressure Low Error ...................................................... 40-282 Failure code [CA2185] Throt Sensor Sup Volt High Error ..................................................... 40-283 Failure code [CA2186] Throt Sensor Sup Volt Low Error...................................................... 40-285 Failure code [CA2249] Rail Press Very Low Error ............................................................... 40-287 Failure code [CA2265] Fuel Feed Pump Open Error............................................................ 40-288 Failure code [CA2266] Fuel Feed Pump Short Error............................................................ 40-290 Failure code [CA2271] EGR Valve Pos Sens High Error ...................................................... 40-292 Failure code [CA2272] EGR Valve Pos Sens Low Error....................................................... 40-294 Failure code [CA2288] Turbo Speed High Error 1................................................................ 40-297 Failure code [CA2311] lMV Solenoid Error.......................................................................... 40-298 Failure code [CA2349] EGR Valve Solenoid Open Error ...................................................... 40-299 Failure code [CA2353] EGR Valve Solenoid Short Error ...................................................... 40-301 Failure code [CA2357] EGR Valve Servo Error ................................................................... 40-303 Failure code [CA2373] Exhaust Manifold Press Sens High error........................................... 40-304 Failure code [CA2374] Exhaust Manifold Press Sens Low error ........................................... 40-306 Failure code [CA2375] EGR Orifice Temp Sens High Error .................................................. 40-308 Failure code [CA2376] EGR Orifice Temp Sens Low Error ................................................... 40-310 Failure code [CA2381] KVGT Pos Sens High Error ............................................................. 40-312 Failure code [CA2382] KVGT Pos Sens Low Error.............................................................. 40-314 Failure code [CA2383] KVGT Solenoid Open Error ............................................................. 40-316 Failure code [CA2386] KVGT Solenoid Short Error ............................................................. 40-318 Failure code [CA2387] KVGT Valve Servo Error ................................................................. 40-320 Failure code [CA2554] Exh Manifold Press Sens In Range error .......................................... 40-321 Failure code [CA2555] Grid Htr Relay Volt Low Error........................................................... 40-322 Failure code [CA2556] Grid Htr Relay Volt High Error .......................................................... 40-324 00-6 D65EX,PX,WX-17
  • 7. 00 Index and foreword Index Failure code [CA2637] KDOC Blocked............................................................................... 40-326 Failure code [CA2639] Manual Stationary Regeneration Request......................................... 40-328 Failure code [CA2961] EGR Orifice Temp High Error 1 ........................................................ 40-331 Failure code [CA2973] Chg Air Press Sensor In Range Error ............................................... 40-332 Failure code [CA3133] KDPF Outlet Press Sens High Error................................................. 40-333 Failure code [CA3134] KDPF Outlet Press Sens Low Error.................................................. 40-335 Failure code [CA3135] KDPF Outlet Press Sens In Range Error .......................................... 40-337 Failure code [CA3251] KDOC Inlet Temp High Error............................................................ 40-340 Failure code [CA3253] KDOC Temp Error - Non Regeneration............................................. 40-343 Failure code [CA3254] KDOC Outlet Temp High Error 1 ...................................................... 40-344 Failure code [CA3255] KDPF Temp Error - Non Regeneration.............................................. 40-347 Failure code [CA3256] KDPF Outlet Temp High Error 1 ....................................................... 40-348 Failure code [CA3311] KDOC Outlet Temp High Error 2....................................................... 40-349 Failure code [CA3312] KDPF Outlet Temp High Error 2 ....................................................... 40-350 Failure code [CA3313] KDOC Inlet Temp Sensor Low Error ................................................. 40-353 Failure code [CA3314] KDOC Inlet Temp Sens High Error ................................................... 40-356 Failure code [CA3315] KDOC Inlet Temp Sens In Range Error............................................. 40-360 Failure code [CA3316] KDOC Outlet Temp Sens Low Error ................................................. 40-364 Failure code [CA3317] KDOC Outlet Temp Sens High Error................................................. 40-367 Failure code [CA3318] KDOC Outlet Temp Sens In Range Error .......................................... 40-371 Failure code [CA3319] KDPF Outlet Temp Sens High Error ................................................. 40-375 Failure code [CA3321] KDPF Outlet Temp Sens Low Error .................................................. 40-379 Failure code [CA3322] KDPF Outlet Temp Sens In Range Error........................................... 40-382 Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error ........................................ 40-386 Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error......................................... 40-388 Failure code [CA3741] Rail Press Valve Trip Error............................................................... 40-390 Failure code [D130KA] Neutral relay:Open......................................................................... 40-391 Failure code [D130KB] Neutral relay:Short circuit................................................................ 40-393 Failure code [D19DKA] Amber light relay:Open .................................................................. 40-395 Failure code [D19DKB] Amber light relay:Short circuit ......................................................... 40-397 Failure code [D19JKZ] Personal Code Relay Abnormality.................................................... 40-399 Failure code [D811MC] KOMTRAX Error............................................................................ 40-402 Failure code [D862KA] GPS Antenna Open Circuit ............................................................. 40-403 Failure code [D8ALKA] Operating Lamp Open Circuit(KOMTRAX)....................................... 40-404 Failure code [D8ALKB] Operating Lamp Short Circuit(KOMTRAX) ....................................... 40-406 Failure code [D8AQKR] CAN2 Discon(KOMTRAX)............................................................. 40-407 Failure code [DAF0MB] Monitor Memory Error.................................................................... 40-408 Failure code [DAF0MC] Monitor Malfunction....................................................................... 40-409 Failure code [DAF8KB] Camera Power Supply Short Circuit ................................................ 40-410 Failure code [DAF9KQ] Model Selection Abnormality.......................................................... 40-412 Failure code [DAFGMC] GPS Module Error........................................................................ 40-413 Failure code [DAFLKA] Operating Lamp Open Circuit(Monitor) ............................................ 40-414 Failure code [DAFLKB] Operating Lamp Short Circuit(Monitor) ............................................ 40-416 Failure code [DAFQKR] CAN2 Discon ............................................................................... 40-417 Failure code [DAZ9KQ] A/C Model Selection Abnormality.................................................... 40-418 Failure code [DAZQKR] CAN2 Discon (Aircon ECU) ........................................................... 40-419 Failure code [DB2QKR] CAN2 Discon (Engine Con) ........................................................... 40-423 Failure code [DB2RKR] CAN1 Discon (Engine Con) ........................................................... 40-428 Failure code [DBE0KT] PTcontroller:Abnormality in controller.............................................. 40-433 Failure code [DBE1KK] PTcontroller:Source voltage low..................................................... 40-434 Failure code [DBE2KK] PTcontroller:Output voltage low ..................................................... 40-436 Failure code [DBE5KK] PT:Sensor volt 5V (0) Out of normal range....................................... 40-438 Failure code [DBE6KK] PT:Sensor volt 24V Out of normal range.......................................... 40-440 Failure code [DBE7KK] PT:Sensor volt 5V (1) Out of normal range....................................... 40-442 Failure code [DBE9KQ] PT controller:Type select signal ...................................................... 40-444 Failure code [DBELKA] Operating Lamp Open Circuit(PT Con)............................................ 40-445 Failure code [DBELKB] Operating Lamp Short Circuit(PT Con)............................................ 40-447 Failure code [DBEQKR] CAN2 Discon (PT Con)................................................................. 40-448 Failure code [DBERKR] CAN1 Discon (PT Con) ................................................................. 40-449 D65EX,PX,WX-17 00-7
  • 8. 00 Index and foreword Index Failure code [DD12KA] Shift up Sw:Open .......................................................................... 40-450 Failure code [DD12KB] Shift up Sw:Short circuit ................................................................. 40-452 Failure code [DD13KA] Shift down Sw:Open ...................................................................... 40-454 Failure code [DD13KB] Shift down Sw:Short circuit............................................................. 40-456 Failure code [DD14KA] Parking lever Sw:Open .................................................................. 40-458 Failure code [DD14KB] Parking lever Sw:Short circuit ......................................................... 40-460 Failure code [DDKFL4] Left Angle Sw:Signal mismatch....................................................... 40-462 Failure code [DDKGL4] Right Angle Sw:Signal mismatch .................................................... 40-464 Failure code [DDKHKA] iB Sw:Open.................................................................................. 40-466 Failure code [DDKHKB] iB Sw:Short circuit ........................................................................ 40-468 Failure code [DDN7KA] Weq pitch SW: Open..................................................................... 40-470 Failure code [DDN7KB] Pitch select solenoid:Short circuit ................................................... 40-472 Failure code [DDNLKA] Weq lock Sw:Open ....................................................................... 40-474 Failure code [DDNLKB] Weq lock Sw:Short circuit .............................................................. 40-476 Failure code [DGS1KA] Hyd oil temp sensor:Open ............................................................. 40-478 Failure code [DGS1KX] Hyd oil temp: signal abnormal ........................................................ 40-479 Failure code [DGT1KA] T/C oil temp sensor:Open .............................................................. 40-481 Failure code [DGT1KX] T/C oil temp sensor:Out of normal range ......................................... 40-482 Failure code [DH21KA] Weq pressure sensor:Open............................................................ 40-484 Failure code [DH21KB] Work equipment pressure sensor:Hot Short..................................... 40-486 Failure code [DHA4KA] Air Cleaner Clogging Sensor Open Circuit....................................... 40-488 Failure code [DHTDKA] T/C pressure sensor:Open............................................................. 40-489 Failure code [DHTDKB] T/C pressure sensor:Hot Short....................................................... 40-491 Failure code [DK10KA] Fuel control Dial:Open ................................................................... 40-493 Failure code [DK10KB] Fuel control Dial:Short circuit .......................................................... 40-495 Failure code [DK30KA] ST lever1:Open ............................................................................. 40-497 Failure code [DK30KB] ST lever:Hot Short ......................................................................... 40-499 Failure code [DK30KX] ST lever:Main and Sub Error........................................................... 40-501 Failure code [DK30KZ] ST lever:Main and Sub Error........................................................... 40-502 Failure code [DK30L8] ST lever:Signal mismatch................................................................ 40-503 Failure code [DK31KA] ST lever2:Open ............................................................................. 40-504 Failure code [DK31KB] ST lever2:Hot Short ....................................................................... 40-506 Failure code [DK40KA] Brake potentiometer:Open.............................................................. 40-508 Failure code [DK40KB] Brake potentiometer:Hot Short........................................................ 40-510 Failure code [DK55KX] FR lever:Main and Sub Error .......................................................... 40-512 Failure code [DK55KZ] FR lever:Main and Sub Error........................................................... 40-513 Failure code [DK55L8] FR lever:Signal mismatch ............................................................... 40-514 Failure code [DK56KA] FR lever1:Open............................................................................. 40-515 Failure code [DK56KB] FR lever1:Hot Short ....................................................................... 40-517 Failure code [DK57KA] FR lever2:Open............................................................................. 40-519 Failure code [DK57KB] FR lever2:Hot Short ....................................................................... 40-521 Failure code [DKH1KA] Pitch angle sensor:Open................................................................ 40-523 Failure code [DKH1KB] Pitch angle sensor:Hot Short.......................................................... 40-525 Failure code [DLM3KA] Fan rev. sensor:Open .................................................................... 40-527 Failure code [DLM3MB] Fan control:Mismatch.................................................................... 40-529 Failure code [DLT3KA] T/M out-speed sensor:Open............................................................ 40-530 Failure code [DLT3KB] T/M out-speed sensor:Short circuit .................................................. 40-532 Failure code [DV20KB] Back-up alarm :Short Circuit ........................................................... 40-533 Failure code [DW5AKA] Pitch select solenoid:Disconnection ............................................... 40-535 Failure code [DW5AKB] Pitch select solenoid:Short circuit................................................... 40-536 Failure code [DW5AKY] Pitch select solenoid:Hot short....................................................... 40-537 Failure code [DW7BKA] Fan reverse solenoid:Open ........................................................... 40-539 Failure code [DW7BKB] Fan reverse solenoid:Short circuit.................................................. 40-541 Failure code [DWN1KA] Hss EPC RH:Open....................................................................... 40-542 Failure code [DWN1KB] Hss EPC RH:Short circuit ............................................................. 40-543 Failure code [DWN1KY] Hss EPC RH:Hot short ................................................................. 40-544 Failure code [DWN2KA] Hss EPC LH:Open ....................................................................... 40-546 Failure code [DWN2KB] Hss EPC LH:Short circuit .............................................................. 40-547 Failure code [DWN2KY] Hss EPC LH:Hot short .................................................................. 40-548 00-8 D65EX,PX,WX-17
  • 9. 00 Index and foreword Index Failure code [DWN5KA] Fan pump solenoid 1 :Open .......................................................... 40-550 Failure code [DWN5KB] Fan pump solenoid 1 :Short circuit ................................................. 40-551 Failure code [DWN5KY] Fan pump solenoid 1: Hot short ..................................................... 40-552 Failure code [DXA2KA] TVC solenoid 1: Open ................................................................... 40-554 Failure code [DXA2KB] TVC solenoid 1: Short circuit .......................................................... 40-555 Failure code [DXA2KY] TVC solenoid 1: Hot short .............................................................. 40-556 Failure code [DXH1KA] Lock-up ECMV:Open..................................................................... 40-558 Failure code [DXH1KB] Lock-up ECMV: Short circuit .......................................................... 40-560 Failure code [DXH1KY] Lock-up ECMV: Hot short .............................................................. 40-561 Failure code [DXH4KA] 1st clutch ECMV:Open .................................................................. 40-563 Failure code [DXH4KB] 1st clutch ECMV:Short circuit ......................................................... 40-564 Failure code [DXH4KY] 1st clutch ECMV:Hot short ............................................................. 40-565 Failure code [DXH5KA] 2nd clutch ECMV:Open ................................................................. 40-567 Failure code [DXH5KB] 2nd clutch ECMV:Short circuit ........................................................ 40-568 Failure code [DXH5KY] 2nd clutch ECMV:Hot short ............................................................ 40-569 Failure code [DXH6KA] 3rd clutch ECMV:Open .................................................................. 40-571 Failure code [DXH6KB] 3rd clutch ECMV:Short circuit......................................................... 40-572 Failure code [DXH6KY] 3rd clutch ECMV:Hot short............................................................. 40-573 Failure code [DXH7KA] R clutch ECMV:Open .................................................................... 40-575 Failure code [DXH7KB] R clutch ECMV:Short circuit ........................................................... 40-576 Failure code [DXH7KY] R clutch ECMV:Hot short ............................................................... 40-577 Failure code [DXH8KA] F clutch ECMV:Open..................................................................... 40-579 Failure code [DXH8KB] F clutch ECMV:Short circuit............................................................ 40-580 Failure code [DXH8KY] F clutch ECMV:Hot short................................................................ 40-581 Failure code [DXJ4KA] Weq lock Sol.:Open ....................................................................... 40-583 Failure code [DXJ4KB] Weq lock Sol.:Short circuit .............................................................. 40-585 Failure code [DXJCKA] Blade angle left EPC:Open............................................................. 40-586 Failure code [DXJCKB] Blade angle left EPC:Short circuit ................................................... 40-587 Failure code [DXJCKY] Blade angle left EPC:Hot short ....................................................... 40-588 Failure code [DXJDKA] Blade angle right EPC:Open .......................................................... 40-590 Failure code [DXJDKB] Blade angle right EPC:Short circuit ................................................. 40-591 Failure code [DXJDKY] Blade angle right EPC:Hot short ..................................................... 40-592 Troubleshooting of electrical system (E-mode) .......................................................................... 40-594 E-1 Engine does not start (Engine does not crank).............................................................. 40-594 E-2 Manual preheating does not work ................................................................................ 40-600 E-3 Automatic preheating does not work ............................................................................ 40-603 E-4 While preheating is working, preheating monitor does not light up .................................. 40-605 E-5 When starting switch is turned to ON position, machine monitor displays nothing............. 40-607 E-6 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up ............................................................................................................. 40-610 E-7 Air cleaner clogging monitor lights up in yellow while engine is running ........................... 40-611 E-8 Charge level monitor lights up while engine is running................................................... 40-612 E-9 Engine coolant temperature monitor lights up while engine is running ............................. 40-614 E-10 Engine oil pressure monitor lights up while engine is running ....................................... 40-615 E-11 Power train oil temperature monitor lights up while engine is running ............................ 40-616 E-12 Hydraulic oil temperature monitor lights up while engine is running ............................... 40-617 E-13 Engine coolant temperature gauge does not indicate correct temparature ..................... 40-618 E-14 Fuel level gauge does not indicate correct level .......................................................... 40-619 E-15 Power train oil temperature gauge (multi-gauge) does not indicate correct temperature ....................................................................................................... 40-621 E-16 Hydraulic oil temperature gauge (multi-gauge) does not indicate correct temperature ....................................................................................................... 40-622 E-17 Operation mode does not change.............................................................................. 40-623 E-18 Gearshift mode does not change ............................................................................... 40-624 E-19 Operating customize switch does not display customize screen ................................... 40-625 E-20 Modifying setting on customize screen does not change setting of machine .................. 40-626 E-21 Reverse slow mode does not function properly ........................................................... 40-627 E-22 Alarm buzzer does not sound or does not stop sounding ............................................. 40-628 E-23 While starting switch is in OFF position, service meter is not displayed ......................... 40-629 D65EX,PX,WX-17 00-9
  • 10. 00 Index and foreword Index E-24 Service mode cannot be selected .............................................................................. 40-630 E-25 Horn does not sound ................................................................................................ 40-631 E-26 Horn does not stop sounding..................................................................................... 40-632 E-27 Backup alarm does not sound ................................................................................... 40-633 E-28 Backup alarm does not stop sounding........................................................................ 40-635 E-29 Headlamp does not light up....................................................................................... 40-636 E-30 Rear lamp does not light up....................................................................................... 40-639 E-31 No wiper operates continuously or intermittently.......................................................... 40-641 E-32 Front wiper does not operate (Failure in both continuous and intermittent operations)......................................................................................................... 40-644 E-33 Rear wiper does not operate (Failure in both continuous and intermittent operations)......................................................................................................... 40-647 E-34 Left door wiper does not operate (Failure of both continuous and intermittent operations)......................................................................................................... 40-650 E-35 Right door wiper does not operate (Failure of both continuous and intermittent operations)......................................................................................................... 40-653 E-36 KOMTRAX system does not operate properly............................................................. 40-656 Troubleshooting of hydraulic and mechanical system (H-mode).................................................. 40-658 Information mentioned in troubleshooting table (H mode) .................................................... 40-658 System diagram of hydraulic and mechanical system.......................................................... 40-659 List of Failure Mode and Cause ......................................................................................... 40-661 H-1 Machine lacks power (insufficient drawbar pull) ............................................................ 40-664 H-2 Machine cannot travel (at 2nd or 3rd speed)................................................................. 40-666 H-3 Machine does not start at all gear speeds..................................................................... 40-667 H-4 Machine travels only in one direction, either forward or in reverse .................................. 40-668 H-5 Large time lag at gear shifting or directional selection.................................................... 40-669 H-6 Machine cannot be steered (machine does not turn left or right) ..................................... 40-670 H-7 Steering speed or power is insufficient......................................................................... 40-671 H-8 Brake does not operate .............................................................................................. 40-672 H-9 Torque converter does not lock up............................................................................... 40-673 H-10 Power train oil overheats .......................................................................................... 40-674 H-11 Unusual noise is heard from around HSS and work equipment pump or HSS motor................................................................................................................. 40-675 H-12 All work equipment operates slowly ........................................................................... 40-676 H-13 All work equipment does not operate ......................................................................... 40-677 H-14 Blade lift speed or power is low ................................................................................. 40-678 H-15 Blade tilt speed or power is low ................................................................................. 40-679 H-16 Blade angle speed or power is low............................................................................. 40-680 H-17 Ripper lift speed or power is low ................................................................................ 40-681 H-18 Hydraulic drift of lifted blade is large........................................................................... 40-682 H-19 Hydraulic drift of tilted blade is large........................................................................... 40-683 H-20 Hydraulic drift of lifted ripper is large .......................................................................... 40-684 H-21 Fans speed is abnormal (high, low, or no rotation)....................................................... 40-685 H-22 Unusual noise is heard from around fan ..................................................................... 40-687 Troubleshooting of engine (S-mode)......................................................................................... 40-688 Information contained in troubleshooting table (S mode)...................................................... 40-688 S-1 When starting switch is turned to START position, engine is not cranked......................... 40-689 S-2 The engine cranks but exhaust smoke does not come out ............................................. 40-690 S-3 Fuel is being injected but engine does not start (incomplete combustion: engine cranks but does not start) .................................................................................................... 40-691 S-4 Startability is poor....................................................................................................... 40-692 S-5 Engine does not pick up smoothly ............................................................................... 40-694 S-6 Engine stops during operation..................................................................................... 40-696 S-7 Engine runs rough or is unstable ................................................................................. 40-698 S-8 Engine lacks power .................................................................................................... 40-699 S-9 Exhaust gas is black (KDPF gets clogged in a short time).............................................. 40-701 S-10 Engine oil consumption is excessive .......................................................................... 40-703 S-11 Engine oil becomes contaminated early...................................................................... 40-704 S-12 Fuel consumption is excessive .................................................................................. 40-705 00-10 D65EX,PX,WX-17
  • 11. 00 Index and foreword Index S-13 Oil is in coolant (or coolant spurts or coolant level goes down)...................................... 40-706 S-14 Oil pressure drops.................................................................................................... 40-707 S-15 Fuel mixes into engine oil.......................................................................................... 40-708 S-16 Water mixes into engine oil (milky)............................................................................. 40-709 S-17 Coolant temperature rises too high (overheating) ........................................................ 40-710 S-18 Unusual noise is made ............................................................................................. 40-711 S-19 Vibration is excessive ............................................................................................... 40-712 S-20 Air cannot be bled from fuel circuit ............................................................................. 40-713 S-21 Frequent active regeneration..................................................................................... 40-714 S-22 Active regeneration is long ........................................................................................ 40-715 S-23 White smoke is exhausted during active regeneration ................................................. 40-716 50 Disassembly and assembly ...........................................................................................................50-3 General information on disassembly and assembly........................................................................50-4 How to read this manual .......................................................................................................50-4 Coating materials list ............................................................................................................50-6 Special tool list................................................................................................................... 50-10 Sketches of special tools .................................................................................................... 50-20 Engine and cooling system........................................................................................................ 50-35 Removal and installation of supply pump assembly............................................................... 50-35 Removal and installation of fuel injector assembly................................................................. 50-40 Removal and installation of cylinder head assembly.............................................................. 50-54 Removal and installation of radiator assembly ...................................................................... 50-72 Removal and installation of aftercooler and assembly ........................................................... 50-77 Removal and installation of hydraulic oil cooler assembly ...................................................... 50-80 Removal and installation of power train oil cooler assembly ................................................... 50-82 Removal and installation of cooling fan drive assembly ......................................................... 50-84 Removal and installation of cooling fan motor assembly ........................................................ 50-86 Removal and installation of engine assembly ....................................................................... 50-88 Removal and installation of damper assembly ...................................................................... 50-95 Removal and installation of engine front seal ........................................................................ 50-98 Removal and installation of engine rear seal....................................................................... 50-101 Removal and installation of engine hood assembly ............................................................. 50-109 Removal and installation of fuel tank assembly ....................................................................50-111 Removal and installation of KDPF assembly....................................................................... 50-113 Disassembly and assembly of KDPF ................................................................................. 50-117 Removal and installation of KCCV assembly ...................................................................... 50-125 Removal and installation of air cleaner assembly ................................................................ 50-129 Power train............................................................................................................................. 50-130 Removal and installation of power train unit assembly ......................................................... 50-130 Disconnecting and connecting of power train unit assembly................................................. 50-135 Disassembly and assembly of PTO ................................................................................... 50-140 Disassembly and assembly of torque converter .................................................................. 50-144 Disassembly and assembly of TORQFLOW transmission.................................................... 50-153 Disassembly and assembly of HSS ................................................................................... 50-177 Removal and installation of final drive assembly ................................................................. 50-196 Disassembly and assembly of final drive ............................................................................ 50-198 Undercarriage and frame......................................................................................................... 50-211 Removal and installation of track frame assembly ............................................................... 50-211 Removal and installation of idler assembly ......................................................................... 50-213 Disassembly and assembly of idler.................................................................................... 50-215 Removal and installation of recoil spring assembly.............................................................. 50-219 Disassembly and assembly of recoil spring ........................................................................ 50-220 Removal and installation of track roller assembly ................................................................ 50-224 Disassembly and assembly of track roller........................................................................... 50-225 Removal and installation of carrier roller assembly.............................................................. 50-228 Disassembly and assembly of carrier roller......................................................................... 50-229 Separation and connection of track shoe assembly (Standard type track shoe) ..................... 50-232 Separation and connection of track shoe assembly (PLUS type track shoe) .......................... 50-235 Overall disassembly and assembly of track shoe (standard type track shoe) ......................... 50-236 D65EX,PX,WX-17 00-11
  • 12. 00 Index and foreword Index Overall disassembly and assembly of track shoe (PLUS type track shoe) ............................. 50-249 Disassembly and assembly of one link in field (standard type track shoe).............................. 50-261 Disassembly and assembly of one link in field (PLUS type track shoe).................................. 50-268 Removal and installation of pivot shaft assembly ................................................................ 50-273 Removal and installation of equalizer bar assembly ............................................................ 50-274 Disassembly and assembly of equalizer bar side bushing.................................................... 50-276 Hydraulic system .................................................................................................................... 50-277 Removal and installation of hydraulic tank assembly ........................................................... 50-277 Removal and installation of control valve assembly............................................................. 50-280 Disassembly and assembly of control valve........................................................................ 50-284 Disassembly and assembly of blade PPC valve.................................................................. 50-285 Disassembly and assembly of ripper PPC valve ................................................................. 50-286 Removal and installation of HSS pump and cooling fan pump assembly ............................... 50-287 Removal and installation of steering lubrication pump and power train pump assembly ........................................................................................................... 50-289 Removal and installation of cooling scavenging pump assembly .......................................... 50-291 Removal and installation of HSS motor assembly ............................................................... 50-292 Disassembly and assembly of hydraulic cylinder................................................................. 50-294 Work equipment ..................................................................................................................... 50-300 Removal and installation of blade assembly (ST-TPP dozer)................................................ 50-300 Removal and installation of blade assembly (PAT dozer) ..................................................... 50-302 Removal and installation of ripper assembly ....................................................................... 50-304 Cab and its attachments.......................................................................................................... 50-307 Removal and installation of ROPS cab assembly................................................................ 50-307 Removal and installation of operator's cab glass (adhesion glass)........................................ 50-313 Removal and installation of operator's sea.......................................................................... 50-318 Removal and installation of seat belt.................................................................................. 50-319 Removal and installation of air conditioner unit assembly..................................................... 50-320 Removal and installation of air conditioner compressor assembly......................................... 50-324 Electric system ....................................................................................................................... 50-325 Removal and installation of machine monitor assembly ....................................................... 50-325 Removal and installation of engine controller assembly ....................................................... 50-326 Removal and installation of power train controller assembly................................................. 50-327 Removal and installation of mass air flow and temperature sensor ....................................... 50-329 Removal and installation of KOMTRAX terminal ................................................................. 50-330 60 Maintenance standard...................................................................................................................60-2 Engine and cooling system..........................................................................................................60-3 Engine mount ......................................................................................................................60-3 Damper...............................................................................................................................60-4 Cooling system ....................................................................................................................60-6 Cooling fan pump.................................................................................................................60-7 Cooling fan motor............................................................................................................... 60-10 Power train............................................................................................................................... 60-12 Power train mount.............................................................................................................. 60-12 Universal joint.................................................................................................................... 60-14 Torque converter and PTO.................................................................................................. 60-15 Transmission ..................................................................................................................... 60-18 Transmission control valve.................................................................................................. 60-22 Forward-reverse clutch ECMV and gear shift clutch ECMV .................................................... 60-23 Lockup clutch ECMV.......................................................................................................... 60-24 Main relief valve and torque converter relief valve ................................................................. 60-25 Transmission lubricating oil relief valve ................................................................................ 60-26 Bevel gear shaft, HSS, and brake........................................................................................ 60-27 Brake valve ....................................................................................................................... 60-32 Final drive ......................................................................................................................... 60-33 Sprocket............................................................................................................................ 60-36 Undercarriage and frame........................................................................................................... 60-40 Main frame ........................................................................................................................ 60-41 Suspension ....................................................................................................................... 60-43 00-12 D65EX,PX,WX-17
  • 13. 00 Index and foreword Index Track frame and idler cushion ............................................................................................. 60-45 Idler .................................................................................................................................. 60-47 Track roller ........................................................................................................................ 60-49 Carrier roller ...................................................................................................................... 60-53 Track shoe ........................................................................................................................ 60-55 Hydraulic system ...................................................................................................................... 60-60 Hydraulic tank.................................................................................................................... 60-60 Scavenging pump .............................................................................................................. 60-61 Steering lubricating pump and power train pump................................................................... 60-62 HSS pump......................................................................................................................... 60-63 HSS motor ........................................................................................................................ 60-65 Control valve ..................................................................................................................... 60-67 Blade PPC valve................................................................................................................ 60-74 Ripper PPC valve............................................................................................................... 60-76 Quick drop valve ................................................................................................................ 60-78 Work equipment lock solenoid valve .................................................................................... 60-80 Angle control EPC valve ..................................................................................................... 60-83 Work equipment ....................................................................................................................... 60-84 Work equipment................................................................................................................. 60-84 Cutting edge and end bit..................................................................................................... 60-92 Ripper............................................................................................................................... 60-94 Lift cylinder........................................................................................................................ 60-95 Tilt cylinder ........................................................................................................................ 60-96 Pitch cylinder..................................................................................................................... 60-97 Angle cylinder.................................................................................................................... 60-98 Ripper cylinder................................................................................................................... 60-99 Cab and its attachments.......................................................................................................... 60-100 Cab mount ...................................................................................................................... 60-100 80 Appendix......................................................................................................................................80-2 Air conditioner ............................................................................................................................80-3 Precautions for refrigerant.....................................................................................................80-3 Air conditioner component ....................................................................................................80-4 Configuration and function of refrigeration cycle......................................................................80-7 Outline of refrigeration cycle..................................................................................................80-8 Air conditioner unit ............................................................................................................. 80-10 Dual pressure switch .......................................................................................................... 80-16 Air conditioner controller ..................................................................................................... 80-17 Air conditioner compressor ................................................................................................. 80-18 Condenser ........................................................................................................................ 80-19 Receiver drier .................................................................................................................... 80-20 Sunlight sensor.................................................................................................................. 80-21 Outside air temperature sensor ........................................................................................... 80-22 Procedure for testing and troubleshooting ............................................................................ 80-23 Circuit diagram and arrangement of connector pins............................................................... 80-25 System diagram................................................................................................................. 80-27 Input and output signals of the air conditioner controller......................................................... 80-28 Layout of air conditioner related parts and connectors ........................................................... 80-30 Testing air leakage (duct).................................................................................................... 80-39 Testing with self-diagnosis function...................................................................................... 80-42 How to enter the electrical system abnormality record screen in service mode of machine monitor ................................................................................................................ 80-43 Testing vent (mode) changeover.......................................................................................... 80-45 Testing FRESH/RECIRC air changeover.............................................................................. 80-46 Testing sunlight sensor ....................................................................................................... 80-47 Testing (dual) pressure switch for refrigerant......................................................................... 80-48 Testing relays .................................................................................................................... 80-49 Troubleshooting chart 1 ...................................................................................................... 80-50 Troubleshooting chart 2 ...................................................................................................... 80-51 Information mentioned in troubleshooting table..................................................................... 80-54 D65EX,PX,WX-17 00-13
  • 14. 00 Index and foreword Index Failure code list related to air conditioner.............................................................................. 80-55 Failure code [879AKA] A/C Inner sensor Open Circuit ........................................................... 80-56 Failure code [879AKB] A/C Inner sensor Short Circuit ........................................................... 80-57 Failure code [879BKA] A/C Outer sensor Open Circuit .......................................................... 80-58 Failure code [879BKB] A/C Outer sensor Short Circuit .......................................................... 80-60 Failure code [879CKA] Ventilating sensor Open Circuit ......................................................... 80-62 Failure code [879CKB] Ventilating sensor Short Circuit.......................................................... 80-63 Failure code [879DKZ] Sunlight sensor Open or Short Circuit ................................................ 80-64 Failure code [879EMC] Ventilating Damper Abnormality........................................................ 80-66 Failure code [879FMC] Air Mix Damper Abnormality ............................................................. 80-67 Failure code [879GKX] Refrigerant Abnormality.................................................................... 80-68 A-1 Troubleshooting for power supply system (Air conditioner does not operate) ..................... 80-69 A-2 Troubleshooting for compressor system (Air is not cooled)............................................... 80-71 A-3 Troubleshooting for blower motor system (Air does not come out or air flow is abnormal) ............................................................................................................ 80-74 A-4 Troubleshooting for FRESH/RECIRC air changeover...................................................... 80-76 Troubleshooting with gauge pressure................................................................................... 80-78 Connection of service tool................................................................................................... 80-81 Precautions for disconnecting and connecting air conditioner piping....................................... 80-82 Handling of compressor oil.................................................................................................. 80-84 90 Diagrams and drawings.................................................................................................................90-2 Hydraulic circuit diagram .............................................................................................................90-3 Symbols in hydraulic circuit diagram ......................................................................................90-3 Power train hydraulic circuit diagram......................................................................................90-7 Hydraulic circuit diagram.......................................................................................................90-9 Electric circuit diagram .............................................................................................................. 90-21 Symbols in electric circuit diagram....................................................................................... 90-21 Electric circuit diagram........................................................................................................ 90-25 Electric circuit diagram for air conditioner unit ....................................................................... 90-51 Index.................................................................................................................................................................... 1 00-14 D65EX,PX,WX-17
  • 15. 00 Index and foreword Foreword, safety and general information Foreword, safety and general information Important safety notice (Rev. 2011/02) • Appropriate servicing and repair are extremely important to ensure safe operation of the machine. The Shop Manual describes the effective and safe servicing and repair methods recommended by Komatsu. Some of these methods require the use of special tools designed by Komatsu for the specific purpose. • The symbol mark k is used for such matters that require special precautions during the work. The work indicated with the warning mark should be performed according to the instructions with special attention to the precautions. Should a hazardous situation occur or be anticipated during such work, be sure to keep safe first and take every necessary measure. General precautions kk Inappropriate handling creates an extreme danger. Read and understand what is described in the Operation and Maintenance Manual before operating the machine. In addition read this manual carefully and understand its contents before starting work. • Before performing any greasing or repairs, read all the safety labels stuck to the machine. For the locations of the safety labels and detailed explanation of precautions, see the Operation and Maintenance Manual. • Locate a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt, water, or oil on the floor. Smoke only in the areas provided for smoking. Never smoke while working. • When performing any work, always wear safety shoes and helmet. Do not wear loose work clothes, or clothes with buttons missing. 1. Always wear the protective eyeglasses when hitting parts with a hammer. 2. Always wear the protective eyeglasses when grinding parts with a grinder, etc. • When performing any work with two or more workers, always agree on the operating procedure before starting. Always inform your fellow workers before starting any step of the work. During the work, hang UNDER REPAIR warning tag in the operator's compartment. • Only qualified workers must perform the work and operation which require license or qualification. • Keep all tools in good condition. Learn the correct way to use them, and use the proper ones of them. Before starting work, thoroughly check the tools, machine, forklift truck, service car, etc. • If welding repairs are needed, always have a trained and experienced welder perform the work. When performing welding work, always wear welding gloves, apron, shielding goggles, cap and other clothes suited for welding work. • Before starting work, warm up your body thoroughly to start work under good condition. • Avoid continuing work for long hours and take rests at proper intervals to keep your body in good condition. Take rests in specified safe places. Safety points 1 Good arrangement 2 Correct work clothes 3 Following work standard 4 Making and checking signals 5 Prohibition of operation and handling by unlicensed workers 6 Safety check before starting work 7 Wearing protective goggles (for cleaning or grinding work) 8 Wearing shielding goggles and protectors (for welding work) 9 Good physical condition and preparation 10 Precautions against work which you are not used to or you are used to too much Preparation work • Before adding oil or making any repairs, park the machine on a hard and level ground, and apply the parking brake and chock the wheels or tracks to prevent the machine from moving. • Before starting work, lower the work equipment (blade, ripper, bucket, etc.) to the ground. If this is not possible, insert the lock pin or use blocks to prevent the work equipment from falling. In addition, be sure to lock all the control levers and hang warning tag on them. • When disassembling or assembling, support the machine with blocks, jacks, or stands before starting the work. • Remove all mud and oil from the steps or other places used to get on and off the machine. Always use the handrails, ladders or steps when getting on or off the machine. Never jump on or off the machine. When a scaffolding is not D65EX,PX,WX-17 00-15
  • 16. 00 Index and foreword Foreword, safety and general information provided, use steps or a step ladder to secure your footing. Precautions during work • For the machine equipped with a battery disconnect switch, before starting the work, check that the system operating lamp is turned OFF, and then turn the battery disconnect switch to the OFF (Q) position and pull the switch key out. For machines without a battery disconnect switch, before starting the work, remove the cables from the battery. Always remove the cable from the negative (–) terminal first. • Before disconnecting or removing components of the oil, water, or air circuits, first release the remaining pressure completely from the circuit. When removing the oil filter cap, a drain plug, or an oil pressure pickup plug, loosen it slowly to prevent the oil from spurting out. • The coolant and oil in the circuits are hot when the engine is shut down. Be careful not to get scalded. Wait for the oil and coolant to cool before performing any work on the oil or water circuits. • Before starting work, shut down the engine. When working on or around a rotating part, in particular, shut down the engine. When checking the machine without stopping the engine (measuring oil pressure, revolving speed, temperature, etc.), take extreme care not to get rolled or caught in rotating parts or moving parts. • When raising a heavy component (heavier than 25 kg), use a hoist or crane. Before starting work, check that the slings (wire ropes, chains, and hooks) are free from damage. Always use slings which have ample capacity and install them to proper places. Operate the hoist or crane slowly to prevent the component from hitting any other part. Do not work with any part still raised by the hoist or crane. • When removing a cover which is under internal pressure or under reaction force of a spring, always leave two bolts in diagonal positions. Loosen those two bolts gradually and alternately to release the pressure, and then remove the cover. • When removing components, be careful not to break or damage the electrical wiring. Damaged wiring may cause electrical fires. • When removing piping, stop the fuel or oil from spilling out. If any fuel or oil drips onto the floor, wipe it off immediately. Fuel or oil on the floor can cause you to slip and can even cause fires. • As a general rule, do not use gasoline to wash parts. Do not use it to clean electrical parts, in particular. • Be sure to assemble all parts again in their original places. Replace any damaged parts and parts which must not be reused with new parts. When installing hoses and wires, be sure that they will not be damaged by contact with other parts when the machine is operated. • When installing high pressure hoses and tubes, make sure that they are not twisted. Damaged hoses and tubes are dangerous, so be extremely careful when installing hoses and tubes for high-pressure circuits. In addition, check that connections of them are correct. • When assembling or installing parts, always tighten them to the specified torques. When installing protective parts such as guards, or parts which vibrate violently or rotate at high speeds, be particularly careful to check that they are installed correctly. • When aligning two holes, never insert your fingers or hand. Be careful not to get your fingers caught in a hole. • When measuring hydraulic pressure, check that the measuring tools are correctly installed. • Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates suddenly, so never let anyone stand at either end of the track. • If the engine is operated for a long time in a place which is not ventilated well, you may suffer from gas poisoning. Accordingly, open the windows and doors to ventilate well. Precautions for slinging work and making signals • Only one appointed worker must make signals and co-workers must communicate with each other frequently. The appointed signaler must make specified signals clearly at a place where he (she) is well seen from the operator's seat and where he (she) can see the working condition easily. The signaler must always stand in front of the load and guide the operator safely. 1. Do not stand under the load. 2. Do not step on the load. • Check the slings before starting sling work. • Keep putting on gloves during sling work. (Put on leather gloves, if available.) • Measure the weight of the load by the eye and check its center of gravity. • Use proper sling according to the weight of the load and method of slinging. If too thick wire ropes are used to sling a light load, the load may slip and fall. • Do not sling a load with one wire rope alone. If it is slung by one wire rope, It may rotate and slip out of the rope. Install two or more wire ropes symmetrically. k Slinging with one rope may cause turning of the load during hoisting, untwisting of the rope, or slipping of the rope from its original 00-16 D65EX,PX,WX-17
  • 17. 10 Structure and function Engine related parts Engine and cooling system Engine related parts 1. Auto-tentioner 10-4 D65EX,PX,WX-17
  • 18. 10 Structure and function Engine related parts 2. KDPF(*1) 3. Dust indicator 4. Air cleaner (*1) 5. KCCV ventilator (*1) 6. Rear engine mount 7. Fuel filter 8. Front engine mount 9. Drain plug 10. Vibration damper (*1) 11. KVGT(*1) 12. Engine oil filter 13. EGR cooler (*1) *1: For the details, see Engine Shop Manual. Function • KVGT (11) is a turbocharger which can vary the cross-sectional area in the exhaust circuit. • EGR cooler (13) is a device which cools the exhaust gas with the coolant. • KGPF (2) is a device which has KDOC (catalyzer) and KCSF (filter to catch soot) for purification of the exhaust gas. • KCCV ventilator (5) is a mechanism which mainly consists of filters and separates oil from blowby gas to return the gas to the air intake side for afterburning. D65EX,PX,WX-17 10-5
  • 19. 10 Structure and function Damper Damper 1. Breather 2. Oil filler plug 3. Inspection plug 10-6 D65EX,PX,WX-17
  • 20. 10 Structure and function Damper 4. Drain plug 5. Damper case 6. Coupling 7. Shaft 8. Bearing 9. Drive plate 10. Friction plate 11. Friction spring 12. Stopper pin 13. Hub 14. Cover Specifications Type Wet, friction spring type Stopper angle (deg.) 4 Stopper torque (Nm {kgm}) 2,685 {274} Function • The damper protects the power train (such as the torque converter and transmission) by buffering torsional vibrations resulting from fluctuations in engine torque or impact torque resulting from sudden acceleration or heavy duty operation. D65EX,PX,WX-17 10-7
  • 21. 10 Structure and function Cooling system Cooling system 1. Cooling fan motor 2. Radiator cap 3. Cooling fan 10-8 D65EX,PX,WX-17
  • 22. 10 Structure and function Cooling system 4. After cooler 5. Aftercooler inlet hose 6. Hydraulic oil cooler inlet 7. Hydraulic oil cooler outlet 8. Power train oil cooler inlet 9. Power train oil cooler outlet 10. Aftercooler outlet hose 11. Hydraulic oil cooler 12. Radiator inlet hose 13. Reservoir tank 14. Radiator 2 15. Radiator 1 16. Radiator outlet hose 17. Power train oil cooler outlet hose 18. Drain plug 19. Power train oil cooler 20. Hydraulic oil cooler bypass valve Specifications Radiator 1 Radiator 2 Power train oil cooler Hydraulic oil cooler Aftercooler Core type Corrugated aluminum Corrugated aluminum PTO-OL Corrugated aluminum Corrugated aluminum Fin pitch (mm) 8.0/2 8.0/2 – 8.0/2 8.0/2 Total heat dissipation area (m2) 61.88 27.20 1.722 2.98 15.89 Pressure valve cracking pressure (kPa {kg/cm2}) 88.3 ± 14.7 {0.9 ± 0.15} 88.3 ± 14.7 {0.9 ± 0.15} – – – Vacuum valve cracking pressure (kPa {kg/cm2}) 0 to 4.9 {0 to 0.05} 0 to 4.9 {0 to 0.05} – – – D65EX,PX,WX-17 10-9
  • 23. 10 Structure and function Cooling fan pump Cooling fan pump P1: Pump delivery port PCEPC: EPC output pressure pickup port PEPC: EPC valve source pressure pickup port PR1: Self-pressure reducing valve output port PS: Pump suction port T0: Drain port T1: Drain plug 1. Servo valve 10-10 D65EX,PX,WX-17
  • 24. 10 Structure and function Cooling fan pump 2. Self-pressure reducing valve 1. Shaft 2. Oil seal 3. Spring 4. Servo piston 5. Case 6. Rocker cam 7. Shoe 8. Piston 9. Cylinder block 10. Valve plate 11. Ball retainer 12. Valve 13. Spring D65EX,PX,WX-17 10-11
  • 25. 10 Structure and function Cooling fan pump Structure • Cylinder block (7) is supported to shaft (1) by spline (a). Shaft (1) is supported by each bearings at the front and rear. • The tip of piston (6) is shaped as a concave sphere and is crimped with shoe (5). Piston (6) and shoe (5) constitute a spherical bearing. • Rocker cam (4) has flat surface (A) and shoe (5) is always pressed against this surface while sliding in a circular pattern. • Rocker cam (4) pivot on ball retainer (11). • Piston (6) performs reciprocal motion in the axial direction inside each cylinder chamber of cylinder block (7). • Cylinder block (7) seals the pressurized oil to valve plate (8) and performs relative rotation. The oil pressure balance on the valve plate is maintained properly. • The pressurized oil is sucked in and discharged from each cylinder chamber in cylinder block (7) through valve plate (8). Specifications Model LPV30 Type Variable displacement swash plate type Piston pump Theoretical delivery (cm3/rev) 30 Rated delivery pressure (MPa {kg/cm2) 24.5 {250} Rated speed (rpm) 2,280 10-12 D65EX,PX,WX-17
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  • 27. 10 Structure and function Cooling fan pump Function • The pump converts the engine speed and torque transmitted to its shaft into oil pressure and delivers pressurized oil corresponding to the load. • It is possible to change the delivery by changing the swash plate angle. Operation Operation of pump • Cylinder block (7) rotates together with shaft (1) and shoe (5) slides on plane (A). • Rocker cam (4) tilts around ball retainer (11), and as a result angle (a) between center line (X) of rocker cam (4) and the axis of cylinder block (7) changes. • Angle (a) is called the swash plate angle. • If swash plate angle (a) is made between center line (x) of rocker cam (4) and the axis of cylinder block (7), plane (A) functions as a cam against shoe (5). • Piston (6) reciprocates inside cylinder block (7) and a difference is made between volumes (E) and (F) in cylinder block (7). Each piston (6) sucks and discharges oil by (F) - (E) • Oil is discharged while cylinder block (7) rotates and the volume of chamber (E) decreases. The volume of chamber (F) grows larger and, in this process, the oil is sucked. [In the figure, chamber (F) is at the end of the suction stroke and chamber (E) is at the end of the discharge stroke.]] D65EX,PX,WX-17 10-13
  • 28. 10 Structure and function Cooling fan pump • As center line (X) of rocker cam (4) matches the axis of cylinder block (7) (swash plate angle = 0), the difference between volumes (E) and (F) inside cylinder block (7) equals 0. The pump does not carry out any suction or discharge of oil. (Actually, however, the swash plate angle is not set to 0 deg.) • Pump delivery is in proportion to the swash plate angle (a). Control of delivery 10-14 D65EX,PX,WX-17
  • 29. 10 Structure and function Cooling fan pump • If swash plate angle (a) increases, the difference between volumes (E) and (F) increases, and delivery (Q) increases. Swash plate angle (a) is changed by servo piston (10). • Servo piston (10) moves in a linear reciprocating movement according to the signal pressure of the servo valve. This linear movement is transmitted to rocker cam (4), which is supported by and pivots on ball retainer (11). Servo valve P: EPC valve source pressure port PE: Control piston pressure PH: Pump delivery pressure PCEPC: EPC output pressure pickup plug PEPC: EPC valve source pressure pickup plug T: Drain 1. Plug 2. Lever 3. Retainer D65EX,PX,WX-17 10-15