Caterpillar cat 930 k wheel loader (prefix frk) service repair manual (frk00001 and up)

Service Repair Manual
Models
930K Wheel Loader

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Product: WHEEL LOADER
Model: 930K WHEEL LOADER FRK
Configuration: 930K Small Wheel Loader FRK00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
924K, 930K and 938K Wheel Loaders
Media Number -UENR0287-05 Publication Date -01/08/2013 Date Updated -02/11/2017
i04554171
Piston Pump (Steering)
SMCS - 4306; 5070
Removal Procedure
Start By:
a. Remove the cab.
b. Remove the hydrostatic, charge gear pump.
1. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the
correct draining and filling procedures.
Illustration 1 g02723776
2. Disconnect hose assemblies (1).
1/25930K Small Wheel Loader FRK00001-UP (MACHINE) POWERED BY C7.1 Engine(...
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3. Attach a suitable lifting device to steering piston pump (2). The weight of steering piston
pump (2) is approximately 36 kg (80 lb). Remove bolts (3). Use the suitable lifting device in
order to remove steering piston pump (2).
4. Remove coupling (4).
Installation Procedure
1. Install steering piston pump (2) in the reverse order of removal.
a. Tighten bolts (3) to a torque of 215 ± 10 N·m (160 ± 7 lb ft)
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 9S-9152 Bearing Puller 1
B 1P-0510 Driver Group 1

Start By:
a. Remove the steering piston pump.
Note: If a failure occurs, an accurate diagnosis of the cause can prevent a recurrence. Information
is available to analyze failures for piston pumps and motors. Refer to Special Publication,
SEBD0641, "Analyzing Axial Piston Pump and Motor Failures".
Note: Inspect all parts. If any parts are worn or damaged use new parts for replacement. The
installation of used parts during reconditioning is acceptable. Reuse and salvage information is
available on piston pumps. Refer to Guideline for Reusable Parts and Salvage Operations,
SEBF8032, "Piston Pumps and Motors". During reconditioning, correct any conditions that might
have caused the original failure.
1. Remove bolts (1) and compensator valve (2).
2. Remove gasket (3) from compensator valve (2).

Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
3. Remove plug (4), and the O-ring seal.
4. Remove plug (12), and the O-ring seal.
5. Remove valve (10), spool (5), retainer (6), spring (7), spring (8), O-ring seal (9), and screw
assembly (11).
6. Remove valve (17), spool (13), retainer (14), spring (15), spring (16), O-ring seal (18), and
screw assembly (19).

7. Remove bolts (20) and head (21).
8. Remove O-ring seals (22) and port plate (23) from head (21).
Note: Place identification marks on port plate (23). The port plate must be in the original
position.
9. Remove bearing cup (24) from head (21).

10. Remove piston guides (25) from head (21), if necessary.
11. Remove spring (26) and piston (27) from pump housing (28).
12. Remove piston (29) from pump housing (28).
13. Remove bearing cone (30) and O-ring seal (31) from pump housing (28).
Note: Bearing cone (30) is a slip fit.

14. Remove shim (32) from the pump shaft.
15. Remove rotating group (33) from pump housing (28). Remove shaft assembly (34) with
rotating group (33).
16. Remove swashplate bearings (35) from pump housing (28).

17. Rotate pump housing (28). Remove retaining ring (36) from pump housing (28).
18. Remove oil seal (37) from pump housing (28).
19. Remove bearing cup (38) from pump housing (28).

20. Remove shaft assembly (34) from rotating group (33).
21. Use a suitable press and Tooling (A) in order to remove bearing cone (39) from shaft
assembly (34).
22. Remove swashplate cradle (40) from rotating group (33).

23. Remove piston assemblies (41) from barrel (42).
Note: Place a mark on the piston assemblies and the barrel. The pistons must be returned to
the original position.
24. Remove piston assemblies (41) from retaining plate (43).
25. Remove guide (44) from barrel (42).
10/25930K Small Wheel Loader FRK00001-UP (MACHINE) POWERED BY C7.1 Engi...

26. Use a suitable press and Tooling (B) to compress the spring in barrel (41).
27. Use Tooling (A) to remove retaining ring (45) from the barrel (42).
28. Remove spring (46), plate (48), and pressure pins (47) from the barrel.

29. If necessary, remove stop (49) from swashplate cradle (40).
Assembly Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
B 1P-0510 Driver Group 1
C 8H-8581 Feeler Gauge 1
D 8T-5096 Dial Indicator Gp 1
E 6V-2055 Grease 1
F 9S-3263 Thread Lock Compound 1
Note: If a failure occurs, an accurate diagnosis of the cause can prevent a recurrence. Information
is available to analyze failures for piston pumps and motors. Refer to Special Publication,
SEBD0641, "Analyzing Axial Piston Pump and Motor Failures".
Note: Inspect all parts. If any parts are worn or damaged use new parts for replacement. The
installation of used parts during reconditioning is acceptable. Reuse and salvage information is
available on piston pumps. Refer to Guideline for Reusable Parts and Salvage Operations,
SEBF8032, "Piston Pumps and Motors". During reconditioning, correct any conditions that might
have caused the original failure.
Note: Apply a light film of oil to all components before assembly.

1. If necessary, install stop (49) in swashplate cradle (40).
Improper assembly of parts that are spring loaded can cause bodily
injury.

To prevent possible injury, follow the established assembly procedure
and wear protective equipment.
2. Install pressure pins (47), plate (48), spring (46), and retaining ring (45) into barrel (42).
3. Use Tooling (B) and a suitable press to compress the spring in barrel (42).
4. Install retaining ring (45) in barrel (42).
5. Install guide (44) on barrel (42).
6. Install piston assemblies (41) in retaining plate (43).

7. Install piston assemblies (41) in barrel (42).
Note: Piston assemblies (41) must be installed in the original position.
8. Install swashplate cradle (40) on rotating group (33).
9. Raise the temperature of bearing cone (39) and install the bearing on shaft assembly (34).

10. Install oil seal (37) in pump housing (28).
11. Rotate pump housing (28). Install retaining ring (36) into pump housing (28).
12. Lower the temperature of bearing cup (38) and install the bearing cup into pump housing
(28).

13. Install swashplate bearings (35) into pump housing (28).
14. Use the following Steps to determine the proper preload on the bearings of the pump
assembly.
a. Install shaft assembly (34) into pump housing (28).
b. Install shim (32) and bearing cone (30) onto shaft assembly (34).

c. Lower the temperature of bearing cup (24). Install bearing cup (24) into head (21).
d. Position head (21) onto pump housing (28).
e. Use Tooling (C) in order to measure the distance between the head and the pump
housing.
f. Take measurements at three equal intervals on the surface between the head and the
pump housing.
g. The average of the three dimensions must be 0.00 to 0.05 mm (0.000 to 0.002 inch).
h. Shim (32) must be replaced with a shim of the correct dimension.

i. Install bolts (20) in head (21). Tighten bolts (20) to a torque of 55 ± 10 N·m
(41 ± 7 lb ft).
j. Install a bolt into the end of shaft assembly (34).
k. Use Tooling (D) and a screwdriver in order to check for end play in shaft assembly
(34). If end play exists in the pump shaft, repeat Step 14 until the correct dimension is
reached.
l. Remove bolts (20) and head (21) from the pump housing.
m. Remove bearing cone (30) and shim (32) from shaft assembly (34). Remove shaft
assembly (34) from the pump housing.
n. Proceed with the assembly of the pump housing assembly.

15. Install shaft assembly (34) into rotating group (33).
16. Carefully turn rotating group (33). Install rotating group (33) into pump housing (28).
17. Install shim (32) onto shaft assembly (34).

18. Install O-ring seal (31) onto pump housing (28).
19. Install bearing cone (30) on shaft assembly (34).
20. Install piston (29) into pump housing (28).
21. Install piston (27) and spring (26) into pump housing (28).

22. Install piston guides (25) in head assembly (21), if necessary. Tighten piston guides (25) to
80 N·m (59 lb ft).
23. Install O-ring seals (22) into head (21).
24. Install port plate (23) onto head (21).
Note: Port plate (23) must be installed in the original position.
Note: Use Tooling (E) in order to secure the port plate to the head assembly during
assembly.
Note: Ensure that the port plate is properly positioned between the head and the pump
housing during this procedure.
injury.

25. Carefully install head (21) onto the pump housing.
26. Apply Tooling (F) to the threads of bolts (20).
27. Install bolts (20) in head (21). Tighten bolts (20) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).
injury.
28. Install screw assembly (19), O-ring seal (18), spring (16), spring (15), retainer (14), spool
(13), and valve (17).
29. Install screw assembly (11), O-ring seal (9), spring (8), spring (7), retainer (6), spool (5),
and valve (10).
30. Install the O-ring seal and plug (12).
31. Install the O-ring seal and plug (4).

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32. Install gasket (3) onto compensator valve (2).
33. Install compensator valve (2) and bolts (1).
Note: The correct priming and break-in procedures should always be used, when the parts of the
rotating group have been rebuilt or replaced. The break-in procedure is important because
improper break-in will result in failures after minimal hours of the pumps and of the motors.

Improper break-in procedures leave little evidence about the failure. Prime a rebuilt pump or a
rebuilt motor.
Note: Abrasive particles must be removed from the hydraulic system. Contamination is a frequent
cause of pump failures. Pump failures are often due to improper flushing techniques from a
previous failure.
Note: Hydraulic system repair is required if the components have been run to catastrophic failure.
The amount of hydraulic system repair will depend on the extent of metal contamination. Do not
use the kidney loop filtering method as the only cleanup procedure. Refer to Special Instruction,
SMHS6866 for loaders. Refer to Special Instruction, SMHS6936 for excavators. These procedures
can be adapted to the hydraulic systems on other Caterpillar machines. The basic flushing
procedures are similar. Be sure to flush the system thoroughly after a failure. Use 130-6061 Hose
Cleaner Group to assist flushing the hydraulic system. Refer to Tool Operating Manual,
NEHS0643 for information on the 130-6061 Hose Cleaner Group.
Note: Once all contaminants have been thoroughly flushed from the system, a baseline SOS
analysis must be completed. Refer to Special Instruction, SEBF3116 for information on oil
sampling. The SOS oil sample is used to determine the size and the quantity of the contaminants.
Particle count is the recommended method for particle detection.
Note: Use 138-9656 Contamination Counter Group during the cleaning procedure for the
hydraulic system. Clean the hydraulic system for 4 hours. Refer to Tool Operating Manual,
NEHS0580 for information on the 138-9656 Contamination Counter Group .
End By:
a. Install the steering piston pump.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Apr 28 08:04:27 UTC+0800 2020

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Product: WHEEL LOADER
Model: 930K WHEEL LOADER FRK
Configuration: 930K Small Wheel Loader FRK00001-UP (MACHINE) POWERED BY C7.1 Engine
Disassembly and Assembly
924K, 930K and 938K Wheel Loaders
Media Number -UENR0287-05 Publication Date -01/08/2013 Date Updated -02/11/2017
i04705191
Secondary Steering Pump and Electric Motor
SMCS - 4324-GT; 4324-MW; 4324-SE; 4325-SE; 5073-SST
Specifications
Table 1
Specification for 347-8287 Secondary Steering Pump and Electric Motor Gp
Item Qty Part Specification Description
1 2 1A-2209 Bolt Torque to 37 ± 2 N·m (27 ± 1 lb ft).

Caterpillar cat 930 k wheel loader (prefix frk) service repair manual (frk00001 and up)

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