Case 2050 m stage iiib crawler dozer service repair manual (pin ngc109000 and above)

SERVICEMANUAL
2050M
Stage IIIB
Crawler Dozer
PIN NGC109000 and above
SERVICE MANUAL
2050M
Stage IIIB
Crawler Dozer
PIN NGC109000 and above
Part number 48048571
1st
edition English
April 2017
© 2017 CNH Industrial America LLC. All Rights Reserved.
Part number 48048571

SERVICE MANUAL
2050M Extra Long Track (XLT), Bulldozer (BD) Blade - Tier 4B (final) and
Stage IIIB [NGC109000 - ], 2050M Extra Long Track (XLT), Power Angle Tilt
(PAT) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ], 2050M Long Track
(LT), Bulldozer (BD) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ],
2050M Long Track (LT), Power Angle Tilt (PAT) Blade - Tier 4B (final) and
Stage IIIB [NGC109000 - ], 2050M Wide Track (WT) / Low Ground Pressure
(LGP), Bulldozer (BD) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ],
2050M Wide Track (WT) / Low Ground Pressure (LGP), Power Angle Tilt (PAT)
Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ]
48048571 27/04/2017
EN

Contents
INTRODUCTION
Engine....................................................................................... 10
[10.001] Engine and crankcase ............................................................. 10.1
[10.216] Fuel tanks .......................................................................... 10.2
[10.206] Fuel filters .......................................................................... 10.3
[10.202] Air cleaners and lines .............................................................. 10.4
[10.250] Turbocharger and lines............................................................. 10.5
[10.500] Selective Catalytic Reduction (SCR) exhaust treatment ........................... 10.6
[10.400] Engine cooling system ............................................................. 10.7
[10.414] Fan and drive ...................................................................... 10.8
[10.310] Aftercooler.......................................................................... 10.9
[10.304] Engine lubrication system........................................................ 10.10
Hydrostatic drive......................................................................... 29
[29.218] Pump and motor components...................................................... 29.1
Brakes and controls .................................................................... 33
[33.110] Parking brake or parking lock ...................................................... 33.1
[33.202] Hydraulic service brakes ........................................................... 33.2
Hydraulic systems....................................................................... 35
[35.300] Reservoir, cooler, and filters........................................................ 35.1
[35.104] Fixed displacement pump.......................................................... 35.2
[35.106] Variable displacement pump ....................................................... 35.3
[35.105] Charge pump....................................................................... 35.4
[35.359] Main control valve.................................................................. 35.5
[35.741] Dozer blade cylinders .............................................................. 35.6
[35.525] Auxiliary hydraulic valves and lines ................................................ 35.7
[35.752] Hydraulic fan drive cooling system................................................. 35.8
48048571 27/04/2017

[35.000] Hydraulic systems.................................................................. 35.9
Frames and ballasting ................................................................. 39
[39.100] Frame .............................................................................. 39.1
Tracks and track suspension........................................................ 48
[48.130] Track frame and driving wheels .................................................... 48.1
[48.100] Tracks .............................................................................. 48.2
[48.134] Track tension units ................................................................. 48.3
[48.138] Track rollers ........................................................................ 48.4
[48.AAA] Tracks and track suspension generic sub-group .................................. 48.5
[48.140] Dropbox and final drive ............................................................ 48.6
Cab climate control ..................................................................... 50
[50.100] Heating ............................................................................. 50.1
[50.104] Ventilation .......................................................................... 50.2
[50.200] Air conditioning..................................................................... 50.3
Electrical systems....................................................................... 55
[55.000] Electrical system ................................................................... 55.1
[55.011] Fuel tank system ................................................................... 55.2
[55.015] Engine control system.............................................................. 55.3
[55.030] Service brake electrical system .................................................... 55.4
[55.050] Heating, Ventilation, and Air-Conditioning (HVAC) control system................. 55.5
[55.100] Harnesses and connectors......................................................... 55.6
[55.201] Engine starting system ............................................................. 55.7
[55.202] Cold start aid ....................................................................... 55.8
[55.301] Alternator........................................................................... 55.9
[55.302] Battery............................................................................ 55.10
[55.408] Warning indicators, alarms, and instruments .................................... 55.11
[55.512] Cab controls...................................................................... 55.12
[55.518] Wiper and washer system........................................................ 55.13
48048571 27/04/2017

[55.988] Selective Catalytic Reduction (SCR) electrical system .......................... 55.14
[55.DTC] FAULT CODES.................................................................. 55.15
Dozer blade and arm................................................................... 86
[86.110] Dozer blade ........................................................................ 86.1
[86.124] Dozer pushbeams and struts ...................................................... 86.2
Tools ......................................................................................... 89
[89.128] Ripper assembly ................................................................... 89.1
Platform, cab, bodywork, and decals............................................. 90
[90.150] Cab................................................................................. 90.1
[90.114] Operator protections ............................................................... 90.2
[90.124] Pneumatically-adjusted operator seat.............................................. 90.3
[90.100] Engine hood and panels ........................................................... 90.4
48048571 27/04/2017

INTRODUCTION
48048571 27/04/2017
1

INTRODUCTION
Foreword - Important notice regarding equipment servicing
2050M WE
All repair and maintenance work listed in this manual must be carried out only by qualified dealership personnel,
strictly complying with the instructions given, and using, whenever possible, the special tools.
Anyone who performs repair and maintenance operations without complying with the procedures provided herein
shall be responsible for any subsequent damages.
The manufacturer and all the organizations of its distribution chain, including - without limitation - national, regional, or
local dealers, reject any responsibility for damages caused by parts and/or components not approved by the manu-
facturer, including those used for the servicing or repair of the product manufactured or marketed by the manufacturer.
In any case, no warranty is given or attributed on the product manufactured or marketed by the manufacturer in case
of damages caused by parts and/or components not approved by the manufacturer.
The manufacturer reserves the right to make improvements in design and changes in specifications at any time without
notice and without incurring any obligation to install them on units previously sold. Specifications, descriptions, and
illustrative material herein are as accurate as known at time of publication but are subject to change without notice.
In case of questions, refer to your CASE CONSTRUCTION Sales and Service Networks.
48048571 27/04/2017
3

INTRODUCTION
Safety rules
2050M WE
Personal safety
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all
safety messages that follow this symbol to avoid possible death or injury.
Throughout this manual you will find the signal words DANGER, WARNING, and CAUTION followed by special in-
structions. These precautions are intended for the personal safety of you and those working with you.
Read and understand all the safety messages in this manual before you operate or service the machine.
DANGER indicates a hazardous situation that, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
FAILURE TO FOLLOW DANGER, WARNING, AND CAUTION MESSAGES COULD RESULT
IN DEATH OR SERIOUS INJURY.
Machine safety
NOTICE: Notice indicates a situation that, if not avoided, could result in machine or property damage.
Throughout this manual you will find the signal word Notice followed by special instructions to prevent machine or
property damage. The word Notice is used to address practices not related to personal safety.
Information
NOTE: Note indicates additional information that clarifies steps, procedures, or other information in this manual.
Throughout this manual you will find the word Note followed by additional information about a step, procedure, or
other information in the manual. The word Note is not intended to address personal safety or property damage.
48048571 27/04/2017
4

INTRODUCTION
Safety rules - Personal safety
2050M WE
General maintenance safety
Keep the area used for servicing the machine clean and dry. Clean up spilled fluids.
Service the machine on a firm, level surface.
Install guards and shields after you service the machine.
Close all access doors and install all panels after servicing the machine.
Do not attempt to clean, lubricate, clear obstructions, or make adjustments to the machine while it is in motion or while
the engine is running.
Always make sure that working area is clear of tools, parts, other persons and pets before you start operating the
machine.
Unsupported hydraulic cylinders can lose pressure and drop the equipment, causing a crushing hazard. Do not leave
equipment in a raised position while parked or during service, unless the equipment is securely supported.
Jack or lift the machine only at jack or lift points indicated in this manual.
Incorrect towing procedures can cause accidents. When you tow a disabled machine follow the procedure in this
manual. Use only rigid tow bars.
Stop the engine, remove the key, and relieve pressure before you connect or disconnect fluid lines.
Stop the engine and remove the key before you connect or disconnect electrical connections.
Scalding can result from incorrect removal of coolant caps. Cooling systems operate under pressure. Hot coolant can
spray out if you remove a cap while the system is hot. Allow the system to cool before you remove the cap. When
you remove the cap, turn it slowly to allow pressure to escape before you completely remove the cap.
Replace damaged or worn tubes, hoses, electrical wiring, etc.
The engine, transmission, exhaust components, and hydraulic lines may become hot during operation. Take care
when you service such components. Allow surfaces to cool before you handle or disconnect hot components. Wear
protective equipment when appropriate.
When welding, follow the instructions in the manual. Always disconnect the battery before you weld on the machine.
Always wash your hands after you handle battery components.
General battery safety
Always wear eye protection when you work with batteries.
Do not create sparks or have open flame near a battery.
Ventilate the area when you charge a battery or use a battery in an enclosed area.
Disconnect the negative (-) terminal first and reconnect the negative (-) terminal last.
When you weld on the machine, disconnect both terminals of the battery.
Do not weld, grind, or smoke near a battery.
When you use auxiliary batteries or connect jumper cables to start the engine, use the procedure shown in the oper-
ator’s manual. Do not short across terminals.
Follow the manufacturer’s instructions when you store and handle batteries.
48048571 27/04/2017
5

INTRODUCTION
Battery post, terminals, and related accessories contain lead and lead compounds. Wash hands after handling. This
is a California Proposition 65 warning.
Battery acid causes burns. Batteries contain sulfuric acid. Avoid contact with skin, eyes, or clothing. Antidote (ex-
ternal): Flush with water. Antidote (eyes): flush with water for 15 minutes and seek medical attention immediately.
Antidote (internal): Drink large quantities of water or milk. Do not induce vomiting. Seek medical attention immedi-
ately.
Keep out of reach of children and other unauthorized persons.
Air-conditioning system
The air-conditioning system is under high pressure. Do not disconnect any lines. The release of high pressure can
cause serious injury.
The air-conditioning system contains gases that are harmful to the environment when released into the atmosphere.
Do not attempt to service or repair the system.
Only trained service technicians can service, repair, or recharge the air-conditioning system.
Personal Protective Equipment (PPE)
Wear Personal Protective Equipment (PPE) such as hard hat, eye protection, heavy gloves, hearing protection, pro-
tective clothing, etc.
Do Not Operate tag
Before you start servicing the machine, attach a ‘Do Not Operate’ warning tag to the machine in an area that will be
visible.
48048571 27/04/2017
6

SERVICE MANUAL
Engine
2050M Extra Long Track (XLT), Bulldozer (BD) Blade - Tier 4B (final) and
Stage IIIB [NGC109000 - ], 2050M Extra Long Track (XLT), Power Angle Tilt
(PAT) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ], 2050M Long Track
(LT), Bulldozer (BD) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ],
2050M Long Track (LT), Power Angle Tilt (PAT) Blade - Tier 4B (final) and
Stage IIIB [NGC109000 - ], 2050M Wide Track (WT) / Low Ground Pressure
(LGP), Bulldozer (BD) Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ],
2050M Wide Track (WT) / Low Ground Pressure (LGP), Power Angle Tilt (PAT)
Blade - Tier 4B (final) and Stage IIIB [NGC109000 - ]
48048571 27/04/2017
10

Engine - Engine and crankcase
Engine - Remove
2050M WE
WARNING
Heavy parts!
Support designated component(s) with adequate lifting equipment.
Failure to comply could result in death or serious injury.
W1024A
Prior operation:
Frame - Remove (39.100)
NOTICE: The engine weighs approximately 631 kg (1391 lb). Use appropriate lifting equipment to prevent personal
injury or property damage.
NOTICE: The engine must be balanced as shown, or personal injury or property damage will occur.
1. Attach an appropriate lifting device to the engine lift
points.
2. Support the front of the hydraulic pump stack with an
appropriate lifting device or stand.
3. Remove the bolts and washers (1) from the right front
engine-to-frame cradle mount and the left front engine-
to-frame cradle mount.
RAIL14DOZ0447AA 1
4. Remove the mounting bolts and washers (1) from the
left side engine-to-frame cradle mounting bracket (2).
Remove the mounting bracket.
RAIL14DOZ0209AA 2
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10.1 [10.001] / 3

right side engine-to-frame cradle mounting bracket (2).
Remove the bracket.
RAIL14DOZ0202AA 3
engine-to-pump stack adapter plate (2).
7. Slowly move the engine forward to separate it from the
hydrostatic pump drive stack, and remove the engine
from the frame cradle.
NOTE: Pull the engine straight forward horizontally by hand
only from the hydraulic pump stack until the rubber coupler
teeth clear the mating ring attached to the flywheel.
RAIL14DOZ0203AA 4
8. Remove the eight bolts (1) that secure the tandem
pump flexible coupling mating ring to the engine fly-
wheel and remove the mating ring.
NOTICE: Replace the flexible coupler when either the en-
gine or hydrostatic pump stack are removed from the ma-
chine. The coupler is a flexible, rubber based component
that could be damaged by excessive heat, excessive shock
loading, unintended vibrations, or if soaked in oil. The cou-
pler is in place to protect the integrity of the engine and
pumps. Damage to coupler may not be visible.
RAIL16DOZ0008AA 5
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10.1 [10.001] / 4

9. Remove the mounting bolts (1) and (2) from the left
hydrostatic drive pump hub and spline (3).
10. Remove the flexible coupling drive gear (4) from the
hydrostatic drive pump hub and spline.
RAIL14DOZ0283AA 6
Next operation:
Engine - Install (10.001)
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Engine - Install
2050M WE
WARNING
Heavy parts!
Support designated component(s) with adequate lifting equipment.
W1024A
Prior operation:
Engine - Remove (10.001)
Prior operation:
Clean threads of oil, dirt, and preservatives prior to assembly.
NOTICE: Replace the flexible coupler when either the engine or hydrostatic pump stack are removed from the ma-
chine. The coupler is a flexible, rubber based component that could be damaged by excessive heat, excessive shock
loading, or unintended vibrations. The coupler is in place to protect the integrity of the engine and pumps. Damage
to coupler may not be visible.
NOTE: Clean and inspect all hardware that is to be reused.
1. Apply LOCTITE® 242® to the eight bolts, and mount the
new tandem pump flexible coupling mating ring (1) to
the engine flywheel (2).
RAIL16DOZ0005AA 1
RAIL16DOZ0004AA 2
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2. Torque the bolts (1) to 41 – 50 N·m (30 – 37 lb ft)
RAIL16DOZ0008AA 3
3. Install the new coupler hub onto the left hydrostatic
drive pump shaft (1).
NOTE: Use new hardware to secure the new coupler hub
to the hydrostatic drive pump shaft.
RAIL16DOZ0038AA 4
4. Apply LOCTITE® 242® to all of the new bolts, then se-
cure the new coupler hub to the left hydrostatic drive
pump shaft with the new flexible coupler stop (1), cen-
ter bolt and washer (2) and the three bolts and washers
(3).
5. Torque the outside bolts (3) to 27 – 35 N·m (20 – 26 lb
ft) and the center bolt (2) to 136 – 156 N·m (100 –
115 lb ft).
RAIL14DOZ0283AA 5
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6. Slowly lower the engine into the frame cradle and con-
nect the engine to the hydrostatic drive pump stack.
NOTE: Push the engine straight backward horizontally by
hand only into the hydraulic pump stack until the rubber
coupler teeth mesh with the mating ring attached to the
flywheel.
7. Clean and apply LOCTITE® 242® to all of the bolts.
8. Install the twelve mounting bolts and washers (1) into
the engine-to-pump stack adapter plate (2). Torque the
bolts to 46 – 62 N·m (34 – 46 lb ft).
RAIL14DOZ0203AA 6
9. Use a level and verify that the engine mounting frame
cradle is sitting on a level surface out of the machine.
NOTE: Before applying the torque to the mid engine-to-frame cradle mount bracket bolts and the front engine-to-
mount frame cradle bolts to their final specification, make sure that the frame cradle is level.
10. Install the right side engine-to-frame cradle mounting
bracket. Apply LOCTITE® 242® to the engine-to-frame
cradle mounting bracket bolts. Torque the three bolts
(1) 91 – 123 N·m (67 – 91 lb ft) to the adapter plate,
and the three bolts (2) 225 – 305 N·m (166 – 225 lb
ft) to the right side engine-to-frame cradle mounting
bracket (3).
RAIL14DOZ0202AA 7
11. Install the left side engine-to-frame cradle mounting
bracket. Apply LOCTITE® 242® to the engine-to-frame
cradle mounting bracket bolts. Torque the three bolts
(1) 91 – 123 N·m (67 – 91 lb ft) to the adapter plate,
and the three bolts (2) 225 – 305 N·m (166 – 225 lb
ft) to the left side engine-to-frame cradle mounting
bracket (3).
RAIL14DOZ0209AA 8
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12. Install the bolts and washers (1) into the right front
engine-to-frame cradle mount and the left front en-
gine-to-frame cradle mount. Torque the bolts to 107
– 123 N·m (79 – 91 lb ft).
RAIL14DOZ0447AA 9
13. Remove the support from the hydraulic pump stack.
14. Remove the lifting device from the engine.
Next operation:
Frame - Install (39.100)
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Engine - Fuel tanks
Fuel tank - Drain fluid - Fuel tank sediment
WARNING
Hot liquid under pressure!
Fuel in the high pressure fuel line is still under pressure immediately after you shut down the engine.
Before performing any maintenance or inspection, wait for 2 minutes after engine shutdown to allow
the pressure to drop.
W0249A
WARNING
Chemical hazard!
When handling fuel, lubricants, and other service chemicals, follow the manufacturer's instructions.
Wear Personal Protective Equipment (PPE) as instructed. Do not smoke or use open flame. Collect
fluids in proper containers. Obey all local and environmental regulations when disposing of chemi-
cals.
W0371A
Drain condensation and sediment from the fuel tank when the hour meter registers 1000 hours of operation and every
1000 hours thereafter. Drain more frequently if conditions so require. The fuel tank drain is located on the left side of
the machine.
Prior operation:
Keep all unauthorized personnel clear of the area. Park the machine on level ground, in neutral with the parking
brake applied, and the attachment lowered to the ground. Make sure that all residual pressure is relieved from circuits
before beginning maintenance.
1. Locate the fuel tank drain hose behind the bolt-on panel
on the left side of the machine.
RAIL16DOZ0212AA 1
NOTE: On machines that are not equipped with the environmental drain option, connect a drain hose to the fuel tank
drain valve. The drain valve is accessible through the right rear access panel or by removing the cab floor access
panel and tilting back the operator’s seat.
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Engine - Fuel tanks
2. Remove the bolts and remove the panel.
RAIL12DOZ0410AA 2
3. Pull the fuel tank drain hose forward, and remove the
fitting.
4. Open the fuel shut off valve located on the fuel tank,
and drain the water and sediment into a suitable con-
tainer.
NOTE: The fuel tank shut off valve is accessible through
the right rear access panel or by removing the cab floor
access panel and tilting back the seat.
5. Dispose of the waste following local regulations.
6. Turn the shut off valve to the closed position after only
clean fuel is discharged.
7. Replace the fitting on the hose.
8. Replace the hoses within the panel and wire tie, if nec-
essary.
9. Check for leaks.
10. Replace the bolts and the cover panel.
RAIL12DOZ0412AA 3
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Engine - Fuel tanks
Fuel tank - Remove
2050M WE
1. Remove the cab from the machine. See Cab - Remove
(90.150).
2. Remove four bolts and washers (1) and remove the fuel
/ Diesel Exhaust Fluid (DEF) drain hose access panel
(2) from the left side of the machine.
RAIL14DOZ0141AA 1
3. Remove the fuel tank drain hose cap (1) from the fuel
tank drain hose (2).
RAIL14DOZ0142AA 2
4. Open the fuel tank drain valve and drain the fuel into
a suitable container for storage. Close the drain valve
when complete.
RAIL14DOZ0144AA 3
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Engine - Fuel tanks
5. Loosen the drain hose clamp (1) and remove the drain
hose (2) from the drain valve (3).
RAIL14DOZ0144AA 4
6. Install the fuel tank drain hose cap (1) to the fuel tank
drain hose (2).
RAIL14DOZ0142AA 5
7. Tag and disconnect the fuel supply (1) and the fuel re-
turn (2) lines from the top of the fuel tank. Close all
openings to prevent fuel loss or contamination.
RAIL14DOZ0143AA 6
8. Remove the fuel supply (1) and the fuel return (2) hoses
from the four retaining clips (3) at the top rear of the fuel
tank.
RAIL14DOZ0145AA 7
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Engine - Fuel tanks
9. Remove the two fuel tank strap retaining bolts (1) and
one locknut (2). Remove the fuel tank retaining straps
(3) from the machine.
RAIL14DOZ0143AA 8
10. Loosen the DEF tank fill hose clamp (1).
RAIL14DOZ0146AA 9
11. Remove the two DEF filler neck bolts and washers (2)
and remove the DEF filler neck (3) from the machine.
Close all openings.
NOTE: The DEF tank does not need to be removed from the machine, however, it must be moved forward to gain
clearance for the fuel tank removal.
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Engine - Fuel tanks
12. Remove the five DEF tank mounting bolts and wash-
ers (1). Slide the DEF tank (2) toward the front of ma-
chine.
RAIL14DOZ0148AA 10
RAIL14DOZ0147AA 11
NOTICE: The fuel tank weighs approximately 31.8 kg (70 lb) when empty. Use appropriate lifting equipment to pre-
vent personal injury or property damage.
13. With the aid of a helper, remove the fuel tank from the
machine.
14. Repair or replace components as necessary.
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Engine - Fuel tanks
Fuel tank - Install
2050M WE
NOTICE: The fuel tank weighs approximately 31.8 kg (70 lb) when empty. Use appropriate lifting equipment to pre-
vent personal injury or property damage.
1. With the aid of a helper, install the fuel tank to the ma-
chine.
2. Slide the DEF tank (1) rearward into position. Install
five Diesel Exhaust Fluid (DEF) tank mounting bolts
and washers (2). Tighten the bolts.
RAIL14DOZ0147AA 1
RAIL14DOZ0148AA 2
3. Install the DEF filler neck (1) to the machine with two
mounting bolts and washers (2). Tighten the bolts.
RAIL14DOZ0146AA 3
4. Tighten the DEF fill hose clamp (3).
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Engine - Fuel tanks
5. Install the fuel tank retaining straps (1) to the machine
and secure with two retaining bolts (2) and one locknut
(3). Tighten the bolts.
RAIL14DOZ0143AA 4
6. Install the fuel supply (1) and the fuel return (2) hoses
into the four retaining clips (3).
RAIL14DOZ0145AA 5
7. Connect the fuel drain hose (1) to the fuel drain valve
(2) and tighten the clamp (3).
RAIL14DOZ0144AA 6
8. Connect the fuel supply (1) and the fuel return (2) lines
to the top of the fuel tank.
RAIL14DOZ0143AA 7
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