730C2 and 725C2 Articulated Truck Power Train Caterpillar

Assembly Procedure

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Illustration 1	g02453074

1. Install Tooling (F).

2. Use Tooling (G) in order to reposition the transmission housing. The weight of the transmission housing is approximately 41 kg (90 lb).
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   Illustration 2	g02452549

3. Install ring seal (119) and ring seal (118).
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   Illustration 3	g02452547

4. Install piston (117).
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   Illustration 4	g02452546

5. Install springs (116) and pins (115). Install plates and discs (114).

   Note: Pins (116) must be installed with the washer end away from the piston.

   Note: Lubricate the plates and discs lightly with the fluid that is being sealed.

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   Illustration 5	g02452545

6. Install clutch plate (113). Install ring gear (112).
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   Illustration 6	g02400836

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   Illustration 7	g02452542

7. Install bearing (111) and thrust washers (110) onto planetary gear (109).

8. Install planetary gear (109). Install shaft (108). Install pin (107).

9. Repeat Step 7 and Step 8 for the remaining planetary gears.
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   Illustration 8	g02452541

10. Compress lock ring (105) and install planetary carrier (103) onto ring gear (106). Install retaining ring (104).

    Note: Use suitable blocking in order to support the planetary carrier.

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    Illustration 9	g02452539

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    Illustration 10	g02452564

11. Use Tooling (L) and a suitable lifting device in order to install planetary carrier (103). The weight of planetary carrier (103) is approximately 20 kg (44 lb). Install thrust bearing (102). Ensure that thrust bearing (102) is orientated correctly.
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    Illustration 11	g02452536

12. Install bearing carrier (101), sun gear (100), and retaining ring (99).
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    Illustration 12	g02452516

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    Illustration 13	g02452619

13. Install shaft assembly (98). Install thrust bearing (97). Ensure that thrust bearing (97) is orientated correctly.
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    Illustration 14	g02452503

14. Install springs (96) and pins (95). Install plates and discs (94).

    Note: Pins (95) must be installed with the washer end away from the piston.

    Note: Lubricate the plates and discs lightly with the fluid that is being sealed.

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    Illustration 15	g02452517

15. Install O-ring seals (93) and seal (92).
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    Illustration 16	g02452500

16. Install bearing assembly (91) into shaft (90). Install shaft (90) into planetary carrier (74).
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    Illustration 17	g02452372

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    Illustration 18	g02452356

17. Install bearings (89) and thrust washers (88) onto planetary gear (87).

18. Install planetary gear (87). Install shaft (86). Install pin (85).

19. Repeat Step 17 and Step 18 for the remaining planetary gears.
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    Illustration 19	g02452337

20. Raise the temperature of bearing cone (84). Install bearing cone (84). Install bearing spacer (83).
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    Illustration 20	g02452661

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    Illustration 21	g02451680

21. Lower the temperature of bearing cup (82). Use Tooling (J), bearing cone (80), and a suitable press in order to install bearing cup (82). Install retaining ring (81). Ensure that bearing cup (82) is seated correctly.
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    Illustration 22	g02452706

22. Position housing assembly (73) onto planetary carrier (74).
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    Illustration 23	g02456616

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    Illustration 24	g02451578

23. Raise the temperature of bearing cone (80). Install bearing cone (80) and output rotor (79). Use Tooling (K), output rotor (79), and a suitable press in order to press bearing cone (80) onto planetary carrier (74).

24. Use Tooling (E) in order to install lip seal (78).

    Note: Lubricate the sealing lip of lip seal (78).

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    Illustration 25	g02451277

25. Install seals (77) onto piston (76).
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    Illustration 26	g02451136

26. Install piston (76). Install Tooling (M).
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    Illustration 27	g02452750

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    Illustration 28	g02450481

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    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.

27. Use Tooling (H) and a suitable lifting device in order to install housing assembly (73) and planetary carrier (74) as a unit. The weight of housing assembly (73) and planetary carrier (74) is approximately 39 kg (86 lb).

28. Install bolts (75). Tighten bolts (75) to a torque of 100 ± 20 N·m (74 ± 15 lb ft).

29. Remove Tooling (M).
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    Illustration 29	g02389756

30. Install O-ring seal (72). Repeat this step for the remaining speed sensor.
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    Illustration 30	g02389738

31. Install yoke (71). Install O-ring seal (70), and retainer (69). Apply Tooling (N) onto bolt (68). Install bolt (68). Tighten bolt (68) to a torque of 270 ± 40 N·m (199 ± 30 lb ft).
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    Illustration 31	g02389737

32. Install speed sensor (67). Install bolt (66) and the retainer. Tighten bolt (66) to a torque of 28 ± 7 N·m (21 ± 5 lb ft). Install speed sensor (65). Install bolt (64) and the retainer. Tighten bolt (64) to a torque of 28 ± 7 N·m (21 ± 5 lb ft).
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    Illustration 32	g02389736

33. Connect harness assemblies (63) and install the connecting hardware.

34. Use Tooling (G) in order to reposition the transmission. The weight of the transmission is approximately 181 kg (400 lb).
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    Illustration 33	g02453068

35. Remove Tooling (F).
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    Illustration 34	g02389715

36. Install seal ring (62) and seal ring (61) onto piston (58).
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    Illustration 35	g02389710

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    Illustration 36	g02452768

37. Install thrust bearing (60). Install thrust disc (59). Install piston (58). Ensure that thrust bearing (60) is orientated correctly.
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    Illustration 37	g02389703

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    Illustration 38	g02389704

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    Illustration 39	g02390856
    Dimension (X) equals 0.25 ± 0.13 mm (0.010 ± 0.005 inch).

38. Install bearings (57) and thrust discs (56) onto planetary gear (55). Install planetary gear (55). Install shaft (54). Install pin (53). Repeat this step for the remaining planetary gears.

39. Lower the temperature of bearing sleeve (52). Use Tooling (D) in order to install bearing sleeve (52) to a depth that is equal to Dimension (X) from Surface (Y).
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    Illustration 40	g02389702

40. Compress retaining ring (50). Install planetary carrier (49) onto ring gear (51).

    Note: Use suitable blocking in order to support the planetary carrier.

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    Illustration 41	g02389701

41. Use two people in order to install planetary carrier (49). The weight of planetary carrier (49) is approximately 16 kg (35 lb).
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    Illustration 42	g02389699

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    Illustration 43	g02452785

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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.

42. Install springs (48) and pins (47). Install plates and discs (46). Install thrust bearing (45). Ensure that thrust bearing (45) is orientated correctly.

    Note: Lubricate the plates and discs with the fluid that is being sealed.

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    Illustration 44	g02389698

43. Install sun gear (44), spring (43), and O-ring seals (42).
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    Illustration 45	g02389559

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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.

44. Install manifold assembly (41). Install bolts (40). Tighten bolts (40) to a torque of 100 ± 20 N·m (74 ± 15 lb ft).
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    Illustration 46	g02389557

45. Install seal rings (39).
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    Illustration 47	g02389536

46. Lower the temperature of bearing cup (38). Install bearing cup (38) into housing (36).
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    Illustration 48	g02390864

47. Raise the temperature of housing (36). Install housing (36) and bearing cone (37).

48. Install O-ring seals (35).
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    Illustration 49	g02389396

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    Illustration 50	g02389397

49. Install O-ring seal (34), seal ring (33), and bearing assembly (32).
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    Illustration 51	g02389380

50. Install hub assembly (31). Install screws (30). Tighten screws (30) to a torque of 12 ± 3 N·m (106 ± 27 lb in).
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    Illustration 52	g02389376

51. Install seal ring (29) onto piston (28).
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    Illustration 53	g02389357

52. Install piston (28).
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    Illustration 54	g02389356

53. Install spring (27).
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    Illustration 55	g02389349

54. Install seal ring (26) onto balance piston (24).
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    Illustration 56	g02453063

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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.

55. Use Tooling (C) in order to compress balance piston (24).

56. Install screws (25). Tighten screws (25) to a torque of 28 ± 7 N·m (21 ± 5 lb ft).

57. Remove Tooling (C).
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    Illustration 57	g02389344

58. Install plates and discs (23).

    Note: Lubricate the plates and discs lightly with the fluid that is being sealed.

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    Illustration 58	g02389340

59. Install hub (22). Install thrust disc (21), plate (20), and retaining ring (19).
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    Illustration 59	g02389338

60. Install O-ring seal (18) and seal ring (17). Install bearing (16).
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    Illustration 60	g02389336

61. Install ring seal (15) onto piston (14).
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    Illustration 61	g02389318

62. Install piston (14).
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    Illustration 62	g02453062

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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.

63. Install spring (12) and retainer (11).

64. Use Tooling (B) and a suitable press in order to compress retainer (11) and spring (12). Install retaining ring (13).
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    Illustration 63	g02388981

65. Install thrust bearing (10).
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    Illustration 64	g02388980

66. Install hub (8). Install retaining ring (7). Install plates and discs (9).

    Note: Apply a thin coat of transmission oil onto the plates and discs prior to assembly.

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    Illustration 65	g02388976

67. Install plate (6) and retaining ring (5). Turn over rotating clutch (1).
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    Illustration 66	g02388957

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    Illustration 67	g02458116

68. Install thrust bearing (4) and bearing (3). Install ring seals (2). Ensure that thrust bearing (45) is orientated correctly.
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    Illustration 68	g02453061

69. Use Tooling (A) and a suitable lifting device in order to install rotating clutch (1). The weight of rotating clutch (1) is approximately 27 kg (60 lb).

End By:

1. Install the torque converter housing.

2. Install the torque converter.