Caterpillar cat 140 g motor grader (prefix 13w) service repair manual (13w00425 00740)

Service Repair Manual
Models
140G Motor Grader

Shutdown SIS
Previous Screen
Product: MOTOR GRADER
Model: 140G MOTOR GRADER 13W
Configuration: 140G MOTOR GRADER 13W00425-00740 (MACHINE) POWERED BY 3306DI ENGINE
Disassembly and Assembly
12G, 120G, 130G & 140G MOTOR GRADER VEHICLE SYSTEMS
Media Number -SENR3650-00 Publication Date -01/09/1987 Date Updated -02/07/2018
SENR36500039
Hydraulic Pump
SMCS - 5070-010; 5070-015; 5070-016
Remove and Install Hydraulic Pump
Start By:
a. articulate the frame and install the anti-pivot pin.
b. remove pump drive
c. remove pressure and flow compensator valve
1. Remove four bolts (2) and disconnect elbow (3). Disconnect two hose assemblies (1), (one not
shown).
2. Remove four bolts (5) and disconnect hose assembly (4) from hydraulic pump (6).
1/14140G MOTOR GRADER 13W00425-00740 (MACHINE) POWERED BY 3306DI E...
2020/2/29https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

3. Disconnect hose assembly (7). Remove six bolts (8) and plate (12). Remove fitting (9) from the
upper hitch pin. Remove four bolts and washers (10). Note: Keep shims between mount assembly
(11) and the front frame.
4. Remove four bolts (13) and plate assembly (14) from hydraulic pump (6).
5. Fasten a hoist to hydraulic pump (6) and remove the pump from the machine. The weight of the
hydraulic pump is 77 Kg (170 lbs.).
6. Remove nut (15) and yoke (16) from hydraulic pump (6). Note: Remove the woodruff Key
from the shaft of the pump.
NOTE: The following steps are for installation of the hydraulic pump.
7. Apply 2P2506 Thread Lubricant on the taper and threads of the pump shaft. Install the woodruff
key and yoke (16) on the pump shaft. Install nut (15) and torque the nut to 180 ± 14 N·m (135 ±
10 lb.ft.).
8. Position hydraulic pump on the front frame. Install plate assembly (14) and four bolts (13) on
the hydraulic pump.
9. Put the shims between mount assemblies (11) and the front frame. Use shims as required to
maintain 6 mm (.236 in.) clearance with the frame. Install four bolts and washers (10). Install plate
(12) and six bolts (8). Install fitting (9) on the upper hitch pin. Connect hose assembly (7) to the
hydraulic tank.

10. Position hose assembly (4) on hydraulic pump (6) and install four bolts (5).
11. Position hose assembly (3) on hydraulic pump (6) and install four bolts (2). Connect two hoses
(1), (one not shown).
End By:
a. install pressure and flow compensator valve
b. install pump drive
c. remove anti-pivot pin from the main frames
Disassemble Hydraulic Pump
Start By:
a. remove implement pump
1. Remove fitting (3) from valve block (1).
2. Remove bolts (2) and remove valve block (1) from pump body (4). Remove the bias cylinder
from the spring in the pump body. Remove the gasket from the pump body.
3. Remove stem (5), stem (6), pin (7) and check valve assembly (8) from the valve block (1).

4. Remove spring (10), water plate (9) and control cylinder (11).
5. Remove bearing assembly (12). Remove the spacers under bearing assembly (12).
6. Remove cylinder block (13) from shaft (14).
The spring located within the cylinder block is under high compression
and can cause bodily harm, if caution is not used, if or when the
retaining ring is removed.

7. Carefully compress the spring with a press, and remove the retaining ring (15) with tool (B).
8. Remove spring washer (16), spring (17) and spring washer (18) from cylinder block (13).
9. Remove bolts (19) and cover (20) from pump body (4).
10. Remove key lock (21).
11. Remove piston and shoe assembly (22) from the pump body (4).
12. Remove bolts (23) and cover (24).

13. Remove O-ring seal (25), bearing spacer (26) and bearing (27).
14. Remove the O-ring seal, the bearing spacer and the bearing from the opposite side.
15. Remove shaft (14), swashplate (28) and the yoke and bumper assembly from the pump
housing. Remove the bearing race from each side of pump body (4).
16. Remove bearing assembly (29).
17. Remove bearing race (30) and inner lip seal (31).

18. Remove outer lip seal (32).
Assemble Hydraulic Pump
NOTE: If new swashplate or bearings are installed, refer to topic, Hydraulic Pump/Swashplate
Bearing in Specifications, Form No. SENR3488.
NOTE: If shaft, shaft bearing, head or housing is replaced refer to topic, Hydraulic Pump/Shaft
Bearing Endplay in Specifications, Form No. SENR3488.
1. Install the inner and outer seals in the pump housing with tool group (A).

2. Lower the temperature of bearing race (30) and install it in pump housing (4).
3. Install bearing assembly (29).
4. Install the yoke and bumper assembly in the pump housing.
5. Follow the procedures below to provide the proper preload on the bearings.
6. Lower the temperature of the bearing race, and install it in the pump housing. Install bearing
(27) and bearing spacer (26). Do not install the O-ring seal at this time.
7. Install cover (20) and tighten bolts (19) to a torque of 15 to 17 N·m (11 to 13 lb.ft.).
8. Turn the pump housing over. Lower the temperature of the bearing race, and install it in the
pump housing. Install bearing (27) and bearing spacer (26). Do not install the O-ring seal at this
time.

9. Rotate the yoke assembly back and forth to seat the bearings.
10. Measure the distance between the spacer and housing with a depth micrometer as shown.
11. Install the proper shim (33) to have a 0.25 to 0.40 mm (0.010 to 0.016 in.) axial preload. Install
bearing spacer (26), O-ring seal, cover and bolts. Tighten the bolts to a torque of 15 to 17 N·m (11
to 13 lb.ft.).
12. Turn the housing over again, and remove the other cover and bolts. Install the O-ring seal,
cover and bolts. Tighten the bolts to a torque of 15 to 17 N·m (11 to 13 lb.ft.).

13. Use a force indicator to push on the yoke pad as shown. The force required to start the
swashplate moving should be 61 to 72 N (14 to 16 lb.). If the force is too low, shims (33) must be
added. If the force is too high, shims (33) must be removed.
NOTE: 0.025 mm (.001 in.) shim thickness equals approximately 4.5 N (1 lb.) change in force.
NOTICE
Put tape around the splines on shaft (14) to avoid damaging the shaft
seal when the shaft is installed.
10/14140G MOTOR GRADER 13W00425-00740 (MACHINE) POWERED BY 3306DI ...

14. Put shaft (14) in position in the housing.
15. Install swashplate (28), making sure the hole in the swashplate is in alignment with pin (34).
16. Install spring washer (16), spring (17) and spring washer (18) in the cylinder block (13). Install
retaining ring (15) on top of spring washer (18).
17. Put the cylinder block assembly in a press.
18. Carefully compress the spring, and install the retainer ring with tool (B).
19. Install piston and shoe assembly (22) in the cylinder block.

20. Install the piston and cylinder block assembly in the pump housing.
21. Turn the cage shoe assembly so that key slot (35) will be in alignment when the key is
installed.
22. Remove the bolts and covers, and install key (21).
23. Install cover and bolts. Tighten the bolts to a torque of 15 to 17 N·m (11 to 13 lb.ft.).
24. Install spacers (36) and bearing (12).

25. If the shaft bearings, shaft, valve block or housing was replaced, a bearing adjustment is
necessary. Use the following procedures.
26. Lower the temperature of the bearing race, and install it in the valve block with tool group (A).
27. Install pin (7) and check valve (8).
28. Install the valve block on the housing, and hand tighten the bolts evenly. Measure the gap at
four positions around the housing, and take the average reading. Also, measure the gasket
thickness. With this measurement, determine the spacer or spacers necessary to obtain 0.00 to
0.100 mm (0.00 to 0.0039 in.) bearing end play. Remove the valve block (1) and bearing (12).
Install correct spacer or spacers on shaft (14). Install bearing (12) on shaft (14).
29. Use Loctite no. 271 on threads. Install stems (5) and (6) in the valve block. Tighten the stems
to a torque of 80 ± 4 N·m (60 ± 3 lb.ft.).
30. Install wafer plate (9) on the valve block, making sure the slot in the plate is in alignment with
the pin in the valve block. Put clean grease on the plate to hold it in place.

31. Install spring (10), and bias cylinder on stem (6). Install control cylinder (11) on stem (5).
NOTE: Put clean grease in the cylinders to hold them in place for assembly.
32. Put valve block (1) and the gasket on pump body (4) and install bolts (2). Tighten bolts (2) to a
torque of 50 to 55 N·m (37 to 41 lb.ft.).
33. Install fitting (3) on valve block (1).
End By:
a. install implement pump
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat Feb 29 12:26:36 UTC+0800 2020

Shutdown SIS
Previous Screen
Product: MOTOR GRADER
Model: 140G MOTOR GRADER 13W
Configuration: 140G MOTOR GRADER 13W00425-00740 (MACHINE) POWERED BY 3306DI ENGINE
Disassembly and Assembly
12G, 120G, 130G & 140G MOTOR GRADER VEHICLE SYSTEMS
Media Number -SENR3650-00 Publication Date -01/09/1987 Date Updated -02/07/2018
SENR36500040
Hydraulic Control Valves
SMCS - 5054-010; 5054-015; 5054-016; 5064-010; 5064-017
Remove And Install Hydraulic Control Valves
1. Remove oil from the hydraulic tank.
2. Remove one screw (7). Loosen bolts (4).
3. Remove cotter pin and pins (3) from linkage (2).
4. Remove cover (1). Remove two bolts and washer (6). Remove plate (5).
5. Identify all oil lines (9) to the valve group (8). Disconnect all oil lines (9) from valve group (8).
6. Remove three bolts (10). Note, washers (11) and mounting (12). Use two persons to remove the
valve group (8). The weight of the valve group is 43 Kg (95 lbs.).

NOTE: The following steps are for installation of the valve group.
7. Use two persons to position the valve group on the machine. Install three bolts (10), washers
(11) and mounting (12).
8. Connect all oil lines (9) to valve group (8).
9. Position plate (5) and cover (1).
10. Install screws (7) and tighten bolts (4).
11. Put linkage (2) in position on the control valves. Install pin and cotter pin (3).
12. Fill the hydraulic tank with oil to the correct level. See the Operation And Maintenance
Manual.
Disassemble Hydraulic Control Valves
Start By:
a. remove hydraulic control valves
1. Remove two bolts (5) and remove bracket (4) from the valve group.
2. Remove three nuts and washers (2) and remove manifold (3) from the valve group. Remove
valve (1) from the valve group.
3. Remove two bolts (6) and cover (7) and the O-ring from valve (1). Remove O-rings (8) from
the valve body.
4. Remove two bolts (10). Remove the lever group from valve body (1).

5. To disassemble the lever group, remove two bolts (21) and remove housing (12) from housing
(9). Note seal (11) between housing (9) and (12).
6. Remove bearing (13), O-ring seal (14), ring (15), bearing (16) and shim (19) from housing (12).
Remove lever (24) and boot (23) from cover (22).
7. Remove stem (25) from valve body (1). Compress spring (26) and remove four retainers (27).
Remove spring (26) from stem (25).
8. Remove shuttle valve (30) from valve body (1).
9. Remove seals (28), (29) and (30). Remove rings (31) and (32) from shuttle valve (30).
10. Remove plug (39). Remove O-ring (36) from plug (39). Remove spring (35) and stem (34)
from valve body (1). Note: Remove washers, if present, from stem (34).

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11. Remove plug and O-ring (37) and (38).
Assemble Hydraulic Control Valves
1. Install the O-rings on plugs (37) and (38). Install plugs (37) and (38). Tighten plug (37) to 90 ±
5 N·m (65 ± 4 lb.ft.).
2. Install rings (31), (32) and O-rings (28), (29) and (33) on shuttle valve (30). Install shuttle valve
(30) in valve body (1).
3. Install washers (40), if used, in stem (34). Install stem (34) in valve body (1). Install spring (35)
in stem (34). Install O-ring (36) on plug (39). Install plug (39) in valve body (1).
NOTE: Washers (40) are used to increase or decrease implement speed. See Form No.
SENR3489, Systems Operation, Testing and Adjusting 12G, 120G, 130G and 140G Hydraulic
System and Steering, topic, Control Valve Flow Adjustment.

4. Install four retainers (27) and spring (26) on stem (25). Insert stem (25) in valve body (1).
5. Install boot (23) on lever (24). Install the boot and lever in cover (22).
6. Install seal (11) in housing (9). Install housing (12) on housing (9). Install bearing (13), O-ring
seal (14), ring (15), bearing (16) and shim (19) on housing (12). Position cover (22) on housing
(12) and install washers (20) and bolts (21).
7. Install seal (18) and O-ring (17) in housing (9). Position lever (24) in stem (25) and install bolts
and washers (10) that hold the lever group to valve body (1).
8. Install the O-ring in cover (7). Install cover (7) and bolts (6) on valve body (1). Install five O-
rings (8) on the valve body.

9. Position the valve (1) and manifold (3) over the three studs and install nuts and washers (2).
10. Position bracket (4) and install bolts (5).
End By:
a. install hydraulic control valves
Remove And Install Combination Valve
Start By:
a. drain the hydraulic tank
1. Remove hose assembly (2) for clearance. Identify and disconnect all hose assemblies (4) from
combination valve (5).
2. Remove three bolts and washers (3). Lower combination valve (5) with mounting bracket (1).
3. Remove three bolts and washers (6) and spacers (7). Remove combination valve (5).
NOTE: The following steps are for installation of the combination valve.
4. Position combination valve (5) and spacers (7), under mounting bracket (1). Install bolts and
washers (6) to hold the combination valve to the mounting bracket.

Caterpillar cat 140 g motor grader (prefix 13w) service repair manual (13w00425 00740)

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