Service Repair Manual
Models
M318C WHEELED Excavator
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Shutdown SIS Previous Screen Product: WHEELED EXCAVATOR Model: M318C WHEELED EXCAVATOR H2D Configuration: M318C Excavator H2D00001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly M318C and M322C Excavators Machine Systems Media Number -RENR9207-02
Publication Date -01/12/2006
Date Updated -05/12/2006
i01904844
Travel Motor - Disassemble SMCS - 4351-015; 79PC-015
Disassembly Procedure Table 1 Required Tools Tool
Part Number
Part Description
Qty
A
138-7575
Link Bracket
2
B
1P-1861
Retaining Ring Pliers
1
C
1U-7600
Slide Hammer Puller Gp
1
D
8H-0663
Bearing Puller Gp
1
E
1P-1857
Retaining Ring Pliers
1
Start By: a. Remove the travel motor. Refer to Disassembly and Assembly, "Travel Motor - Remove". Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly procedures on a clean work surface. Keep components covered and protected at all times.
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Illustration 1
g00992625
1. Attach Tooling (A) and a suitable lifting device to head assembly (2). 2. Remove bolts (1). 3. Remove housing assembly (2).
Illustration 2
g00924957
4. Remove bolts (3). 5. Remove valve (4).
Illustration 3
g00924958
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6. Remove O-ring seals (5). 7. Remove valve (6).
Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened.
Illustration 4
g00992626
8. Remove valve (7), plug (8), and the O-ring seal.
Illustration 5
g00991751
9. Remove valve (9). 10. Remove spring (10) and spool (11).
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Illustration 6
g00992657
11. Remove plug (12) and the O-ring seal.
Illustration 7
g00924963
12. Remove plug (13).
Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened.
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Illustration 8
g00991753
13. Remove cover (14). 14. Remove bolts (16). 15. Remove cover (15).
Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened.
Illustration 9
g00991754
16. Remove spring (17). 17. Remove bushing (18).
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Illustration 10
g00991755
18. Remove O-ring seals (19). 19. Remove O-ring seal (20).
Illustration 11
g00991756
20. Use Tooling (E) in order to remove retaining ring (21).
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Illustration 12
g00992661
21. Remove plug (22) and the O-ring seal.
Illustration 13
g00695123
Note: Record the distance from the locknut to the end of the screw for installation purposes.
Illustration 14
g00991758
22. Remove screw (23) and dowel (24).
Illustration 15
g00924973
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23. Remove plug (25) and the O-ring seal.
Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened.
Illustration 16
g00991759
24. Remove bushing (27) and spring (26).
Illustration 17
g00924975
25. Remove cap (28).
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Illustration 18
g00991760
26. Remove plug (29) and the O-ring seal. 27. Remove relief valve (30). 28. Repeat Steps 25 through 27 for the opposite side.
Illustration 19
g00924978
29. Remove O-ring seals (31), O-ring seal (32), and O-ring seal (33).
Illustration 20
g00991762
30. Remove bolt (34), the piston, and the setscrew.
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Illustration 21
g00924980
31. Remove plate (36). 32. Remove pin (35) and spool (37).
Illustration 22
g00924981
33. Remove cap (38), the locknut, and the screw. Note: Measure the distance between the nut and the end of the set screw for installation purposes. 34. Remove plug (39) and the O-ring seal. 35. Remove plug (40) and the O-ring seal.
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Illustration 23
g00924982
36. Remove barrel (41) from the piston assembly. 37. Remove O-ring seal (42) from housing (43).
Illustration 24
g00924983
38. Remove spring (44) and washer (45) from barrel (41).
Illustration 25
g00924984
39. Use Tooling (B) in order to remove retaining ring (46).
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Illustration 26
g00924985
40. Remove shim (47).
Illustration 27
g00924987
41. Use Tooling (C) in order to remove seal (48).
Illustration 28
g00991763
42. Use a suitable press in order to remove rotor assembly (49).
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Illustration 29
g00991764
43. Remove bolts (50).
Illustration 30
g00991765
44. Remove pistons (51), center pin (53), and retainer plate (52).
Illustration 31
g00991766
45. Remove rings (54) from pistons (51).
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Illustration 32
g00991767
46. Use Tooling (B) in order to remove retaining ring (55). 47. Remove shim (56).
Illustration 33
g00991768
48. Place the rotor assembly in a suitable press. Use Tooling (D) in order to remove shaft (57) from bearing (58), shim (59), and bearing (60). Copyright 1993 - 2020 Caterpillar Inc.
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Shutdown SIS Previous Screen Product: WHEELED EXCAVATOR Model: M318C WHEELED EXCAVATOR H2D Configuration: M318C Excavator H2D00001-UP (MACHINE) POWERED BY 3056E Engine
Disassembly and Assembly M318C and M322C Excavators Machine Systems Media Number -RENR9207-02
Publication Date -01/12/2006
Date Updated -05/12/2006
i01904846
Travel Motor - Assemble SMCS - 4351-016; 79PC-016
Assembly Procedure Table 1 Required Tools Tool
Part Number
Part Description
Qty
A
138-7575
Link Bracket
2
B
1P-1861
Retaining Ring Pliers
1
E
1P-1857
Retaining Ring Pliers
1
Note: Cleanliness is an important factor. Before you begin the assembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform assembly procedures on a clean work surface. Keep components covered and protected at all times.
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Illustration 1
g00992746
1. Raise the temperature of bearing (58) and bearing (60). 2. Lower the temperature of shaft (57). 3. Install bearing (60), shim (59), and bearing (58) onto shaft (57).
Illustration 2
g00991767
4. Install shim (56). 5. Use Tooling (B) in order to install retaining ring (55).
Illustration 3
g00991766
6. Install rings (54) onto piston (51).
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Illustration 4
g00991765
7. Install pistons (51), center pin (53), and retainer plate (52).
Illustration 5
g00991764
8. Install bolts (50).
Illustration 6
g00992750
9. Install rotor assembly (49).
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Illustration 7
g00925623
10. Install seal (48).
Illustration 8
g00924985
11. Install shim (47).
Illustration 9
g00924984
12. Use Tooling (B) in order to install retaining ring (46).
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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.
Illustration 10
g00924983
13. Install washer (45) and spring (44) into barrel (41).
Illustration 11
g00924982
14. Install barrel (41) into the piston assembly. 15. Install O-ring seal (42) into housing (43).
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Illustration 12
g00924981
16. Install plug (40) and the O-ring seal. 17. Install plug (39) and the O-ring seal. 18. Install cap (38), the locknut, and the screw into the original position.
Illustration 13
g00924980
19. Install pin (35) and spool (37). 20. Install plate (36).
Illustration 14
g00991762
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21. Install the piston, the setscrew, and bolt (34).
Illustration 15
g00924978
22. Install O-ring seals (31), O-ring seal (32), and O-ring seal (33).
Illustration 16
g00991760
23. Install relief valve (30). 24. Install plug (29) and the O-ring seal.
Illustration 17
g00924975
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25. Install cap (28). 26. Repeat Steps 23 through 25 on the opposite side.
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.
Illustration 18
g00991759
27. Install spring (26) and bushing (27).
Illustration 19
g00924973
28. Install plug (25) and the O-ring seal.
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Illustration 20
g00991758
29. Install dowel (24) and screw (23) into the original position.
Illustration 21
g00992661
30. Install plug (22) and the O-ring seal.
Illustration 22
g00991756
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31. Use Tooling (E) in order to install retaining ring (21).
Illustration 23
g00991755
32. Install O-ring seal (20). 33. Install O-ring seals (19).
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.
Illustration 24
g00991754
34. Install bushing (18). 35. Install spring (17).
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Illustration 25
g00991753
36. Position cover (15). 37. Install bolts (16). 38. Install cover (14).
Illustration 26
g00924963
39. Install plug (13).
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