Takeuchi TB250 Mini Excavator Service Repair Workshop Manual (Serial No. 125000004 and up).pdf
- 2. FOREWORD This manual, which is written for engineers who service the machine, describes procedures for disassembly and assembly, inspection and maintenance, and troubleshooting, as well as maintenance reference values and an outline of the specifica- tions. Refer to this manual during daily work to improve your services. Note that the information is subject to change without notice due to design modifications made to the machine from time to time by the manufacturer. Directional terms: front, rear, left, right In this manual, the “front” refers to the end of the machine where the blade is mounted, while the “rear” refers to the other end where the travel motor is mounted. The “right” or “left” refers to the side viewed by a person sitting in the operator’s seat. Machine serial number The machine serial number is stamped on the identification plate. Be sure to include this number when sending a report or inquiry or when ordering parts. Control of manual Appoint a person in charge of keeping the manuals up to date in your company and inform us of the person’s name for our records. Any revisions or additions to this manual will be sent to the person. Symbols used in this manual The symbols used in this manual have the following meanings. Indicates the machine serial number. Means “Refer to the section quoted.” Indicates the mass of the equipment or machine. Means “Tighten to the torque specified here.” Indicates the use of thread-locking compound. Indicates the use of grease. Manual structure This manual consists of the following parts. 1. Safety 2. Service data 3. Function 4. Disassembly and assembly 5. Troubleshooting 6. Engine
- 3. 1-1 SAFETY 1 Safety alert symbol ...................................................... 1-2 Safety precautions....................................................... 1-3 Cautions when working ............................................... 1-9
- 4. 1-2 1 SAFETY SAFETY ALERT SYMBOL This symbol represents the safety alert. The message that follows the symbol contains important information regard- ing human safety. Read and understand the message to avoid personal injury or death. Safety label Safety labels are used to alert operators or other people exposed to the risks of injury or damage. There are the fol- lowing three types of labels. Read the labels carefully as they are important for your safety. DANGER The word “DANGER” indicates an imminently hazard- ous situation which, if not avoided, is likely to result in serious injury or death. WARNING The word “WARNING” indicates a potentially hazard- ous situation which, if not avoided, could result in seri- ous injury or death. CAUTION The word “CAUTION” indicates a potentially hazard- ous situation which, if not avoided, may result in minor or moderate injury. IMPORTANT: The word “IMPORTANT” is used to alert operators and maintenance personnel about situations which could result in damage to the machine and its components. This manual is intended for trained and qualified personnel only. Warnings or cautions described in this manual do not necessarily cover all safety measures. It is also impossible to cover all hazards and risks which may be associated with the maintenance of the machine in every environment. For maintenance work, each person must take adequate safety precautions against possible hazards in the respec- tive working environment. SAFETY ALERT SYMBOL
- 5. 1-3 1 SAFETY PRECAUTIONS SAFETY SAFETY PRECAUTIONS Observe all safety rules • Operation, inspection and maintenance of this machine must be performed only by a trained and qualified per- son. • All rules, regulations, precautions and safety procedures must be understood and followed when performing op- eration, inspection and maintenance of this machine. • Do not perform any operation, inspection or mainte- nance of this machine when under the influence of alco- hol, drugs, medication, fatigue or insufficient sleep. Wear safe clothing and protective gear • Do not wear loose clothing or any accessory that can catch on the controls or the moving parts of the ma- chine. • Do not wear clothing stained with oil or grease that can easily catch fire. • Wear protective gear such as helmet, safety shoes, pro- tective goggles, respirator, gloves and earmuffs, as ap- propriate, depending on the work involved. Especially make sure to wear protective eye-wear and mask when working with a grinding/polishing/sanding machine, hammer or compressed air, as metal fragments or other objects could scatter in such an environment. • Wear hearing protectors when operating the machine. Loud and prolonged noise can damage or destroy your hearing. Install an extinguisher and a first aid kit • Install an extinguisher to fight a fire, and learn how to use it. • Prepare a first aid kit and keep it at a designated place. • Decide on the procedures to be used in case of fire or other hazards. • Decide on and take note of the contact(s) in case of emergency. Place a “Do not operate” alert sign Serious injury or death may result if an unauthorized person starts the engine or touches the controls during inspection or maintenance. • Before performing maintenance, stop the engine, re- move the key and store it in a safe place. • Prominently display a “Do not operate” alert sign on places such as the starter switch and the control lever. Place another sign outside of the machine as neces- sary. Use the correct tools Do not use damaged or weakened tools or tools designed for other purposes. Use only the correct tools for the work involved. 1BAA01Z 1BAA02Z 1BAA03Z
- 6. 1-4 1 SAFETY PRECAUTIONS SAFETY Regularly replace the safety-critical parts • Regularly replace fuel hoses to prevent a fire hazard. Hoses wear out over time, even if they do not show any symptom of wear. • Regardless of the replacement schedule, replace imme- diately if a symptom of wear is found. Explosionproof lighting To prevent an ignition or explosion, use explosion-proof lights when inspecting fuel, oil, coolant or battery fluid. Prohibit access by unauthorized persons Do not allow unauthorized personnel in the work area while working. Take particular care that no unauthorized person is present when grinding, welding or using a hammer. Prepare the work area • Select a level and firm ground on which to perform maintenance work. Make sure that the work area is light enough and well ventilated. • Straighten any obstacle or dangerous object, remove any spill of oil or grease and clean the work area. When the canopy is tilted up • If the canopy is raised or lowered while the engine is moving, the machine may accidentally start moving, re- sulting in severe injury to the maintenance personnel. Make sure that the working equipment has been low- ered to the ground and the engine has been turned off before raising/lowering the canopy. • When the canopy is tilted up, firmly secure the canopy with a stopper to prevent it from falling. Keep the machine clean • Clean the machine before performing maintenance and try to keep it clean. • Before washing, cover the electrical parts with vinyl to prevent water from entering, as this could cause a short- circuit or malfunction. Do not use water or steam to wash the battery, sensors, connectors or the operator’s seat area. Stop the engine before performing maintenance Make sure the engine is stopped before starting inspection or maintenance. If maintenance must be performed with the engine running, always work as a 2-person team, com- municating with each other. • One of them must sit at the operator’s seat and stop the engine whenever necessary. He/she must take care not to touch the lever or pedal unless necessary. • The one who performs maintenance must make sure to keep his/her body or clothing away from the moving part of the machine. 1BAA04Z 1BAA05Z 1BAA06Z
- 7. 1-5 1 SAFETY PRECAUTIONS SAFETY Keep clear of the moving fan and belt • Any object that can be easily caught in moving parts must be kept away. • If a hand or tool becomes trapped in the fan or fan belt, you could lose your finger. Do not touch the fan or belt while they are moving. When working under the machine • Before performing maintenance or repairs under the machine, set all movable equipment against the ground or in the lowermost position. • Place chocks under the crawler tracks to secure the machine. • If it is unavoidably necessary to work under the raised machine or working equipment, be sure to firmly sup- port it by using an arm stopper, wooden block, stand or safety brace. Never go under the raised machine or working equipment without such protection measures. When working on the machine • To prevent slipping/falling from machine, clear the foot- ing and observe the following: a. Do not spill oil or grease on the machine. b. Keep the machine tidy and clean. c. Be careful when walking around the machine. • Never jump down from the machine. Climb up/down the ladder (steps) holding the handrail to support your weight in a three point secure stance (hand and feet). • Wear protective gear according to the work involved. Securing the working equipment When replacing/repairing the bucket teeth or side cutter, secure the relevant equipment to prevent any accidental movement. Secure the engine hood and guard when they are open Firmly secure the machine when the engine hood or guard is left open. Do not keep the hood or guard open on a windy day or if the machine is parked on a slope. Place heavy components in a stable position When it is necessary to temporally place a heavy compo- nent, such as the hoe attachment, on the ground during removal or installation, be sure to place it in a stable posi- tion. 1BAA07Z 1BAA08Z 1BAA09Z 1BAA10Z
- 8. 1-6 1 SAFETY PRECAUTIONS SAFETY Caution when filling with fuel or oil • Keep away from heat, sparks and flame while filling with fuel or oil. • Never remove the fuel cap or try to fuel when the engine is running or still hot. • Maintain control of the fuel filler nozzle when filling the tank. • Refill with fuel or oil outdoors or in a well ventilated place, with the engine turned off. • Clean up spilled fuel or oil immediately. • Do not overfill the tank. • Firmly tighten the fuel cap or oil cap. If the fuel cap is lost, replace it only with the original manufacturer’s ap- proved cap. Use of a non-approved cap without proper venting may result in pressurization of the tank. • Never use fuel for cleaning. • Use the correct grade of fuel for the operating season. Handling of hoses Oil leak or fuel leak can cause a fire. • Do not twist, bend or hit the hoses. • Never use twisted, bent or cracked pipes, tubes or hos- es; otherwise, they may burst. • Retighten loose connections. Be careful with hot and pressurized components Before performing inspection and maintenance, stop the engine and allow the machine to cool down. • The engine, muffler, radiator, hydraulic lines, sliding parts and many other parts of the machine are hot immediate- ly after the engine is stopped. Wait until it cools before making any inspection or adjustments. • The engine coolant, hydraulic oil and other oils are also hot and under high pressure. Touching these liquids will cause burns. Handling of radiator Do not remove the radiator cap when the coolant is hot. Wait until it cools down, and then remove the radiator cap by loosening it slowly to release the internal pressure. 1BAA12Z 1BAA13Z 1BAA11Z
- 9. 1-7 1 SAFETY PRECAUTIONS SAFETY Be careful with oils under pressure Pressure is maintained in the hydraulic circuit long after the engine has been shut down. • Do not fill with, dispose of fuel/oil, or perform the in- spection and maintenance until the internal pressure is completely released. • The hydraulic oil escaping from a small hole can be haz- ardous if contacted. It is under high enough pressure to penetrate the skin or eyes and cause serious injury. If leak is suspected, protect your eyes and skin by wear- ing protective glasses and thick gloves to search for a leak. Also use a paperboard or plywood to keep your skin from oil spurting. If oil penetrates the skin, it must be surgically removed within a few hours by a doctor familiar with this type of injury. Release internal pressure before working on the hydraulic system Oil may spurt out if caps or filters are removed or pipes are disconnected before releasing the pressure in the hydraulic system. • Gradually loosen the vent plug to release the internal pressure of the hydraulic oil tank. • Move all the control levers and pedals several times in all directions to release the pressure from the circuit of the working equipment (for link type controls). • When removing plugs or screws, or when disconnect- ing hoses, stand to the side and loosen them slowly to gradually release the internal pressure before removing. Be careful with grease under pressure In the track adjuster, the grease has been injected under high pressure. If the tension is adjusted without following the prescribed procedure, the grease discharge valve may fly off, resulting in injury. • Loosen the grease discharge valve slowly. • Do not put your face, arms, legs or body in front of the grease discharge valve. Handling of the accumulator Be sure to handle the high-pressure nitrogen gas enclosed in the accumulator with care according to procedure. If handled incorrectly, it could explode and cause serious in- jury. Strictly observe the following precautions: • Do not disassemble. • Do not allow flame near it or throw it into a fire. • Do not drill, weld or fuse. • Do not subject it to physical shock such as hitting, rolling or dropping. • Before disposing of the unit, the sealed gas must be drained. Contact your sales or service dealer for help with this. Disconnect the battery Disconnect the wiring from the both terminals (+ and -) on the battery before working on the electrical system or doing electric welding. Otherwise, short-circuit and explosion of the battery can result. 1BAA14Z 1BAA15Z 1BAA16Z
- 10. 1-8 1 SAFETY PRECAUTIONS SAFETY Use caution when handling batteries • Batteries contain sulfuric acid which will damage eyes or skin if contacted. • If eye contact occurs, flush immediately with clean water and get prompt medical attention. • If accidentally swallowed, drink large quantities of water or milk and call a physician immediately. • If acid contacts skin or clothing, wash off immediately with a lot of water. • Wear protective glasses and gloves when working with batteries. • Batteries generate flammable hydrogen gas which may explode. Keep away from flame and sparks. • Do not use or charge the battery when the electrolyte level is lower than the lower limit: otherwise, it could cause an explosion. • Be sure to stop the engine by turning off the starter switch before inspecting or handling the battery. • Be careful not to let metal tools (or any metal objects) such as a hammer or spanner come into contact with the battery terminals. • When disconnecting the battery wiring, always discon- nect it from the earth side (-). When connecting, connect the earth side last. • Loose battery terminals may result in sparks. Be sure to fasten terminals tightly. • Make sure the battery caps are tightened securely. • Do not charge a battery or jump-start the engine if the battery is frozen; otherwise it may explode. Warm the frozen battery to 15°C (60°F) before use. 1BAA17Z Have a service agent repair welding cracks or other damage Ask a service agent to make any repairs that require weld- ing. If the agent is unavailable, make sure the welding is done by a qualified person in a properly equipped work- place. Checks after maintenance • Gradually raise the engine speed from low idle to maxi- mum and check that no oil or water is leaking from the parts serviced. • Move the controls and check that the machine is oper- ating properly. Disposing of wastes • Always collect oil that is drained from the machine in containers. Improperly disposed waste oil can cause environmental harm. • Follow appropriate laws and regulations when dispos- ing of harmful objects such as oil, fuel, coolant, solvent, filters and batteries. 1BAA18Z
- 11. 1-9 1 SAFETY CAUTIONS WHEN WORKING When disassembling or assembling • Clean the machine before disassembly. • Check the following items and record the results: a. Model, machine serial number, hour meter. b. Reason for repair, repair history. c. Are the filters dirty? d. The conditions of the fuel and oil. e. Any damage or looseness to any part? • Where necessary, draw alignment indicators to avoid assembly errors. To avoid misconnection, place indica- tors such as reference tags on pipes. • Clean all disassembled parts and new parts, arrange them neatly, and place indicators as necessary. • Be sure to replace all seals and cotter pins with new ones. • Keep those parts that should not come in contact with water or oil away from those with oil on the surface. • When installing bearings, bushings and oil seals, a press tool should be used. If a hammer is used, use a cushion- ing material to avoid damage. • Wipe all joining surfaces clean until there is no dirt or dust adhering to them. • Wrap the thread tight with seal tape starting 1 or 2 threads away from the thread end. The tape should be overlapped by about 10 mm. When removing/installing the hydraulic unit • Make sure that the temperature of the hydraulic oil has dropped and is cool enough to work with. • To prevent the hydraulic oil from escaping under pres- sure, release the residual pressure in the piping. • Be sure to install caps or plugs on all openings in the hydraulic unit to prevent dirt from getting into the unit through them. • The hydraulic oil adhering to the unit is often mistaken for an oil leak, so wipe off the unit thoroughly. • Be sure that no damage is caused to the plating on the rod in the hydraulic cylinder. • Removal and installation of the hydraulic cylinder should be done with the rod fully retracted. • Be sure to bleed the air after installing the hydraulic cyl- inder. ( “4. Disassembly and assembly: Cylinder”) • Always bleed the air when hydraulic oil is changed or a hydraulic device is replaced.( “4. Disassembly and assembly: Drive system”) 1CAA01Z ������������ ������������� �������� ���������� �������������������������� �������������������������������� ���������������������������������� 1CAA02Z ���� ������� ������� ���� ������� ������� CAUTIONS WHEN WORKING
- 12. 1-10 1 SAFETY When connecting/disconnecting the hoses or pipes • When hydraulic hoses or pipes are connected, tighten them once to the prescribed torque, then loosen them slightly and retighten them to the prescribed torque. a. Tighten the fittings after the installation surfaces fit snugly together. b. The above procedures do not apply to fittings with seal tape. • Use two spanners, one to tighten/loosen and the other to secure the mating hose/pipe to ensure that the hose is not twisted. • After connecting the hydraulic hoses or pipes, apply the maximum working pressure five or six times to check for leakage. • If high pressure, vibration or shock is applied to a twist- ed hose, oil leak, hose breakage or damage to the hose fitting can result. • Be sure that the hydraulic hoses are not contacting sharp objects or each other. This could cause surface flaws on the hoses, resulting in breakage. 1CAA03Z Handling of seals • Clean the grooves for O-rings and remove any burrs. • Be careful not to twist the O-rings. If twisted, remove it with your fingertips. • When inserting, be careful not to damage the seal. • Handling of the floating seal a. After removal, wipe all oil off the O-ring and housing of the floating seal. b. When assembling, apply a thin coating of gear oil to the contact surface of the housing, c. After assembly, turn the seal two or three times to get it to fit snugly. • Apply grease to the lip of the oil seal. a. This is to prevent wear from occurring upon first start up after assembly. 1CAA05Z ���� ���� ������ ���� ������� ������ 1CAA06Z ������ ����������� �������� 1CAA04Z CAUTIONS WHEN WORKING
- 13. 2-1 SERVICE DATA 2 Dimensional drawing ................................................... 2-2 Specifications tables.................................................... 2-4 Lubricant and Fuel chart.............................................. 2-9 Performance criteria .................................................. 2-11 Tightening torque ...................................................... 2-21 Hydraulic circuit diagram ........................................... 2-25 Electric circuit diagram............................................... 2-33 Wire harness wiring diagram...................................... 2-37
- 14. 2-2 2 SERVICE DATA DIMENSIONAL DRAWING Machine dimensions DIMENSIONAL DRAWING Unit: mm Standard arm Middle arm Long arm Rubber crawlers Steel crawlers Rubber crawlers Rubber crawlers A 5470 5470 5510 5550 B 1690 1690 1690 1690 C 2515 2520 2515 2515 D 1435 1435 1435 1435 E 630 625 630 630 F 1985 1920 1985 1985 G 2500 2425 2500 2500 H 1840 1840 1840 1840 J 400 400 400 400 K 335 330 335 335 L 2170 2170 2195 2235 M 1680 1680 1705 1740 P 715 715 715 715 Q 710/705* 710/705* 710/705* 710/705* R 1840 1840 1840 1840 S 430 430 430 430 T 4070 4070 4110 4150 U 1720 1720 1720 1720 V 80º/75º * 80º/75º* 80º/75º* 80º/75º* W 60º 60º 60º 60º *: Serial No. 125000295 or later
- 15. 2-3 2 SERVICE DATA DIMENSIONAL DRAWING Operating range Unit: mm Standard arm Middle arm Long arm Rubber crawlers Rubber crawlers Rubber crawlers A 5850 5990 6135 B 5705 5850 5995 C 3475 3625 3785 D 2725 2860 2990 E 3935 3985 4055 F 5625 5715 5800 G 3990 4085 4175 H 1595 1450 1295 J 435 435 435 K 355 355 355
- 16. 2-4 2 SPECIFICATIONS TABLES SERVICE DATA SPECIFICATIONS TABLES Operating mass Cab kg 4965 Canopy kg 4825 Rated output 29.5/2400 28.4/2400 Bucket capacity Heaped capacity m3 0.141 Struck capacity m3 0.102 Performance Standard loading mass kg 184 Slew speed min-1 9.8 Travel speed 1st km/h 2.8 2nd km/h 5.2 Maximum tractive force kN 56.1 Gradeability % 58 degree 30 Ground Pressure Cab kPa 28.1 Canopy kPa 27.3 Noise Level Sound-power level dB(A) LWA 96 Sound-pressure level dB(A) LPA 77 Machine dimensions Overall length in transport condition mm 5470 Overall width mm 1840 Overall width Track retracted mm –– Overall working equipment height in transept position Cab mm 2515 Canopy mm 2515 Dimensions of base machine Overall length of base machine mm 2965 Overall width of base machine mm 1840 Overall width of base machine Track retracted mm –– Upper structure overall width mm 1690 Upper structure overall width Left mm 860 Right mm 830 Cab overall length mm 1030 Overall height of base machine mm –– Slew radius mm 1435 Upper structure rearmost distance from axis of rotation mm 1400 Clearance height under upper structure mm 630 Crawler base mm 1985 Crawler overall length mm 2500 Undercarriage overall width mm 1840 Undercarriage overall width Track retracted mm –– Track gauge mm 1440 Track gauge Track retracted mm –– Track shoe width mm 400 Ground clearance of undercarriage mm 335 Net (ISO 14396) kW/min-1 Net (ISO 9249/SAEJ1349) kW/min-1
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- 18. 2-5 2 SPECIFICATIONS TABLES SERVICE DATA Engine Model YANMAR 4TNV88 Type 4-cycle, vertical, water-cooled, in-line, 4-cylinder diesel engine Number of cylinders -bore×stroke mm 4−88×90 Total displacement mL 2185 Maximum torque N·m 131.8 to 143.4 min-1 1440 Specific fuel consumption (at rated output) g/kW·h 243 Fuel/air washer Centrifugal, filter paper Cooling system type Fan Suction type Radiator Pressure type Starter motor Voltage V 12 Output kw 2.3 Generator Voltage V 12 Output kw 0.48 Battery Voltage V 12 Capacity A·h 92 Qty. 1 Hydraulic system Hydraulic pump drive system Engine direct coupling Hydraulic pump Type Variable displacement type double axial piston plus double gear Qty. 1 Delivery L/min 58.3×2+38.9+10.8 Hydraulic pump control system All horsepower control Main relief valve pressure setting MPa 21.0×2+19.6+3.4 Hydraulic tank pressure Pressure tank Control valve Type Directional control valve, 10 valves in series (standard spec.) Operation type –– Hydraulic oil filter Type Glass fiber filter type Filter precision BETA10=6 Installing position Return Circuit (In Hydraulic tank) Hydraulic oil cooler Cooling system type Air cooling Radiation of heat area m2 Operating equipment Cab Position Left side Construction Suspension seat, adjustable Cab or canopy Construction Steel enclosed cabin with all glass doors tempered glass, Steel posts canopy Operating lever and pedals Shifting operation Second travel speed switch Travel operation Pilot operated (2 levers) Slew operation Pilot operated Arm operation Pilot operated Bucket operation Pilot operated Boom operation Pilot operated Boom swing operation Mechanics, Pedal Others Auxiliary hydraulics operating: Pilot operated and pedal Instrument, switches Cluster gauge Water temperature gauge, Fuel gauge, Hour meter, Charge, Oil, Water temperature, Decel, Air cleaner, 2nd-speed pilot Lighting installation Head ligh V-W 12V-55W H3-Halogen Boom light V-W 12V-55W H3-Halogen Warning, safety device 12V,110dB(A) Others Cab: Wiper, Heater, With defroster
- 19. 2-6 2 SPECIFICATIONS TABLES SERVICE DATA Slew equipment Slew bearing Type Ball bearing Slew motor Type Variable displacement piston motor Qty. 1 Reduction gears Type Epicycle reduction gear Slew brake Type Brake valve with a shockless relief Qty. 1 Slew parking brake parking Type Wet friction plate type Slew lock Type –– Lower Machinery Power transmission device Travel motor Type Variable displacement type double axial piston motor, With counterbalance valve Qty. 2 Reduction gears Type Epicycle reduction gear Travel brake Type Operation delay with a counter balance valve Parking brake Type Wet friction plate type Undercarriage Track shoe Type Rubber track Steel crawler with triple grouser Number of shoes (One side) Qty. 74 38 Shoe width mm 400 400 Grouser height mm –– 14 Rug height mm 25 –– Roller Carrier roller (One side) Qty. 1 Track roller (One side) Qty. 5 Track adjuster Type Grease cylinder type (with cushion springs) Track gauge extension mechanism –– Working equipment Hoe attachment Bucket capacity Heaped m3 0.141 Struck m3 0.102 Bucket width Standard mm 585 With side cutter mm 630 Bucket mass kg 110 Boom length mm 2820 Arm length mm 1450 Bucket wrist radius mm 835 Bucket wrist angle degree 188 Boom swing angle Left degree 78/76* Right degree 58 Eccentric quantity of boom swing pivot mm 85
- 20. 2-7 2 SPECIFICATIONS TABLES SERVICE DATA Working dimensions Maximum reach mm 5850 Maximum reach at ground reference plane mm 5710 Minimum level floor radius mm 1835 Maximum digging depth mm 3475 Reach at maximum digging depth mm 2400 Maximum vertical digging depth mm 2725 Maximum height of cutting edge mm 5625 Reach at maximum height mm 3095 Maximum dumping height mm 3990 Reach at maximum dumping height mm 2850 Minimum dumping height mm 1595 Minimum radius of equipment and attachment mm 2170 Minimum radius of equipment at maximum front offset mm 1680 Overall height at minimum radius of equipment and attachment mm 4320 Overall height of equipment at maximum front offset mm 4320 Offset distance of bucket Left mm 715 Right mm 710/705* Main structure Bucket Type –– Number of teeth Qty. 4 Hydraulic Cylinder Boom cylinder Number of cylinders Qty. 1 Bore mm 100 Stroke mm 690 Arm cylinder Number of cylinders Qty. 1 Bore mm 90 Stroke mm 750 Bucket cylinder Number of cylinders Qty. 1 Bore mm 80 Stroke mm 585 Swing cylinder Number of cylinders Qty. 1 Bore mm 90 Stroke mm 620/615* Digging force Maximum digging force Bucket cylinder kN 37.2 Arm cylinder kN 25.9 Maximum lifting force Boom cylinder kN 26.3 Other attachment (Option) Long arm, Middle arm *: Serial No. 125000295 or later
- 21. 2-8 2 SPECIFICATIONS TABLES SERVICE DATA Dozer blade Type Straight type Operation type Hydraulic lifting type Dozer blade cylinder Number of cylinders Qty. 1 Bore mm 110 Stroke mm 175 Dimensions Dozer blade dimensions Width mm 1840 Height mm 430 Cutting angle degree 69 Distance between the front end of dozer blade and the axis of rotation mm 1720 Dozer blade maximum lifting mm 435 Dozer blade maximum lowering mm 355 Dozer blade approach angle degree 32.5