Service Repair Manual
Models
930K Wheel Loader
930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
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Shutdown SIS Previous Screen Product: WHEEL LOADER Model: 930K WHEEL LOADER EYE Configuration: 930K Small Wheel Loader EYE00001-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).
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
Illustration 2
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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).
Illustration 3
g02723958
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
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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.
Illustration 4
g01284849
1. Remove bolts (1) and compensator valve (2).
Illustration 5
g01284850
2. Remove gasket (3) from compensator valve (2).
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Illustration 6
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g01284851
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).
Illustration 7
g01284854
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
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.
7. Remove bolts (20) and head (21).
Illustration 8
g02723654
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.
Illustration 9
g02724785
9. Remove bearing cup (24) from head (21).
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
10. Remove piston guides (25) from head (21), if necessary.
Illustration 10
g02724809
11. Remove spring (26) and piston (27) from pump housing (28).
Illustration 11
g02724811
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.
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
Illustration 12
g02724814
14. Remove shim (32) from the pump shaft.
Illustration 13
g02724815
Illustration 14
g02724816
15. Remove rotating group (33) from pump housing (28). Remove shaft assembly (34) with rotating group (33).
Illustration 15
g02724823
16. Remove swashplate bearings (35) from pump housing (28).
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engine(...
Illustration 16
g02723510
17. Rotate pump housing (28). Remove retaining ring (36) from pump housing (28).
Illustration 17
g02724826
18. Remove oil seal (37) from pump housing (28).
Illustration 18
g02724830
19. Remove bearing cup (38) from pump housing (28).
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Illustration 19
g02724833
20. Remove shaft assembly (34) from rotating group (33).
Illustration 20
g02723519
21. Use a suitable press and Tooling (A) in order to remove bearing cone (39) from shaft assembly (34).
Illustration 21
g02724921
22. Remove swashplate cradle (40) from rotating group (33).
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Illustration 22
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g02724924
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.
Illustration 23
g02724929
24. Remove piston assemblies (41) from retaining plate (43).
Illustration 24
g02724935
25. Remove guide (44) from barrel (42).
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Illustration 25
g02723526
Illustration 26
g02724942
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.
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.
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Illustration 27
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g02724948
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.
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Illustration 28
g02724948
1. If necessary, install stop (49) in swashplate cradle (40).
Illustration 29
g02724942
Illustration 30
g02723526
Improper assembly of parts that are spring loaded can cause bodily injury.
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930K Small Wheel Loader EYE00001-UP (MACHINE) POWERED BY C7.1 Engi...
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).
Illustration 31
g02724935
5. Install guide (44) on barrel (42).
Illustration 32
g02724929
6. Install piston assemblies (41) in retaining plate (43).
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Illustration 33
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g02724924
7. Install piston assemblies (41) in barrel (42). Note: Piston assemblies (41) must be installed in the original position.
Illustration 34
g02724921
8. Install swashplate cradle (40) on rotating group (33).
Illustration 35
g02724965
9. Raise the temperature of bearing cone (39) and install the bearing on shaft assembly (34).
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Illustration 36
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g02724826
10. Install oil seal (37) in pump housing (28).
Illustration 37
g02723510
11. Rotate pump housing (28). Install retaining ring (36) into pump housing (28).
Illustration 38
g02724830
12. Lower the temperature of bearing cup (38) and install the bearing cup into pump housing (28).
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Illustration 39
g02724823
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.
Illustration 40
g02724969
a. Install shaft assembly (34) into pump housing (28).
Illustration 41
g02724975
b. Install shim (32) and bearing cone (30) onto shaft assembly (34).
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Illustration 42
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g02724980
c. Lower the temperature of bearing cup (24). Install bearing cup (24) into head (21).
Illustration 43
g02723621
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.
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Illustration 44
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g01284854
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).
Illustration 45
g02723632
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.
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Illustration 46
g02724833
15. Install shaft assembly (34) into rotating group (33).
Illustration 47
g02724815
16. Carefully turn rotating group (33). Install rotating group (33) into pump housing (28).
Illustration 48
g02724814
17. Install shim (32) onto shaft assembly (34).
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Illustration 49
g02724811
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).
Illustration 50
g02724809
21. Install piston (27) and spring (26) into pump housing (28).
Illustration 51
g02724785
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22. Install piston guides (25) in head assembly (21), if necessary. Tighten piston guides (25) to 80 N¡m (59 lb ft).
Illustration 52
g02723654
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.
Illustration 53
g01284854
Improper assembly of parts that are spring loaded can cause bodily injury.
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To prevent possible injury, follow the established assembly procedure and wear protective equipment.
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).
Illustration 54
g01284851
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.
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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Illustration 55
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32. Install gasket (3) onto compensator valve (2).
Illustration 56
g01094312
Illustration 57
g01284849
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.
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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.
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Shutdown SIS Previous Screen Product: WHEEL LOADER Model: 930K WHEEL LOADER EYE Configuration: 930K Small Wheel Loader EYE00001-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; 4324; 4325-SE; 5073-SST
Specifications
Illustration 1
g02790506
Table 1 Specification for 347-8287 Secondary Steering Pump and Electric Motor Gp Item
Qty
Part
1
2
1A-2209 Bolt
Specification Description Torque to 37 ± 2 N·m (27 ± 1 lb ft).
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