Caterpillar cat 938 h wheel loader (prefix mcc) service repair manual (mcc00001 and up)

Service Repair Manual
Models
938H Wheel Loader

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Product: WHEEL LOADER
Model: 938H WHEEL LOADER MCC
Configuration: 938H WHEEL LOADER MCC00001-UP (MACHINE) POWERED BY C6.6 ENGINE
Disassembly and Assembly
IT38H Integrated Toolcarrier and 938H Wheel Loader Machine Systems
Media Number -RENR9765-03 Publication Date -01/04/2010 Date Updated -15/04/2010
i02852191
Piston Pump (Implement, Steering) - Assemble
SMCS - 4306-016-QP; 5070-016-ZI; 5084-016-QP; 5086-016-ZI
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
B 136-1452 Retaining Ring Pliers As 1
C 154-9731 Thread Lock Compound 1
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw...

Illustration 1 g01420670
1. Install o-ring (65) on cover (64). Repeat for other side.
2. Install cover (64) and bolts (63) .
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4. Install bearings (60) .
5. Install bearings (59) onto swashplate (58A) .
6. Install swashplate (58A) and wear plate (58) .
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7. Raise the temperature of bearing (57) .
8. Install retaining ring (56) and bearing (57) onto shaft assembly (55) .
9. Install shaft assembly (55) .
10. Use Tooling (B) in order to install retaining ring (54) .
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11. Install lip seals (53) .
12. Install O-ring seals (52) .
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13. Install cover (51) .
14. Use Tooling (B) to install cover (51) and to install retaining ring (50) .
15. Install springs (48) into barrel (49) .
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16. Install retainer (47) .
17. Install bearing (46) .
18. Install pistons (44) into retainer (45) .
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19. Install pistons (44) and retainer (45) .
20. Install barrel assembly (42), O-ring seal (41), and O-ring seal (43) .
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21. Lower the temperature of bearing (40) .
22. Install bearing (40) .
23. Install port plate (39) .
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.
injury.
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938H WHEEL LOADER MCC00001-UP (MACHINE) POWERED BY C6.6 ENG...
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25. Install O-ring seal (32), O-ring seal (33), backup rings (34), valve (31), spool and sleeve
(28), retainer (29), and spring (30) .
26. Install plug (27) .
27. Install cover (26), bolts (23), adjustment screw (25), and locknut (24) .
28. Install backup ring (18), O-ring seal (19), O-ring seal (20), backup ring (21), and valve
(22) .
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29. Install piston (17) .
30. Install the cover, bolts (14), adjustment screw (15), and locknut (16) .
Note: Setscrew (15) must be bottomed out against plug before locknut (16) is tightened.
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31. Apply Tooling (C) to the threads of piston (12) .
32. Install piston (12) and ball (13). Tighten piston (12) to a torque of 350 ± 30 N·m (258 ± 22
lb ft).
Note: Do not use a impact wrench in order to install piston (12) .
Note: Allow Tooling (C) to dry for four hours at room temperature.
33. Install the O-ring seal, the backup ring, and piston (11) .
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34. Install the cover, bolts (8), adjustment screw (10), and locknut (9) .
35. Install spool (7M) .
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36. Install ball (7K) .
37. Install retainer (7J) .
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38. Install springs (7G) and O-ring seal (7H) .
injury.
39. Install housing (7F) and bolts (7E) .
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40. Install spring (7D), pilot piston (7C), and control piston (7B) .
41. Install pin (7A) .
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42. Install spring (7) .
43. Install O-ring seal (6) and the backup ring.
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injury.
45. Install O-ring seals (3) .
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46. Install head (2) and bolts (1) .
End By: Install the pump. Refer to Disassembly and Assembly, "Piston Pump (Implement, Pilot) -
Install".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sat May 9 18:00:25 UTC+0800 2020
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Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 938H WHEEL LOADER MCC
Configuration: 938H WHEEL LOADER MCC00001-UP (MACHINE) POWERED BY C6.6 ENGINE
Disassembly and Assembly
IT38H Integrated Toolcarrier and 938H Wheel Loader Machine Systems
Media Number -RENR9765-03 Publication Date -01/04/2010 Date Updated -15/04/2010
i03544024
Piston Pump (Implement, Steering) - Install
SMCS - 4306-012-QP; 5070-012-ZI; 5084-012-QP; 5086-012-ZI
Installation Procedure
1. Attach a suitable lifting device to piston pump (6) . The weight of piston pump (6) is
approximately 120 kg (265 lb). Install piston pump (6) and bolts (7) .
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2. Connect hose assembly (5) .
3. Connect tube assembly (4) . Repeat for the hose assembly (not shown) that is located below
hose assembly (4) . Install tube assembly (3) .
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4. Connect hose assembly (2) .
5. Install tube assembly (1) .
NOTICE
To avoid system damage, make sure that the hydraulic pump is
properly filled with hydraulic oil before start-up.
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Caterpillar cat 938 h wheel loader (prefix mcc) service repair manual (mcc00001 and up)

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