D6N Track-Type Tractor Power Train Bevel and Transfer Gears - Assemble Caterpillar

Assembly Procedure

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Illustration 1	g00994564

1. Install fittings (48), if fittings (48) were removed.

2. Install tube assemblies (49).
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   Illustration 2	g00994563

3. Lower the temperature of bearing cup (47).

4. Install bearing cup (47) into case (31).
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   Illustration 3	g00994149

5. Install rings (43) into carrier (44).

6. Install carrier (44).

7. Lower the temperature of bearing cups (42) and (45). Install bearing cups (42) and (45).

8. Install bearing cone (46).
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   Illustration 4	g00994148

9. Install original shims (41), cage (40), and bolts (39).
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   Illustration 5	g00954863

10. Raise the temperature of race and roller bearing (38).

11. Install the race and roller bearing (38) onto shaft assembly (35).
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    Illustration 6	g00954861

12. Position gear (37). Install bolts (36).
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    Illustration 7	g01233575

13. Attach a suitable lifting device to shaft assembly (35). The weight of shaft assembly (35) is approximately 39 kg (86 lb).

14. Install shaft assembly (35).
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    Illustration 8	g00994147

15. Install bearing cone (34A), washer (34), and new lock ring (33).

16. Apply Tooling (H) to the threads and to the face of nut (32). Install nut (32).

17. Use Tooling (C) in order to tighten nut (32) to a torque of 612 ± 68 N·m (451 ± 50 lb ft).

18. Bend the tab on lock ring (33) toward nut (32).
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    Illustration 9	g00954857

19. Lower the temperature of bearing cups (30).

20. Install bearing cups (30) into case (31).
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    Illustration 10	g00971426

21. Raise the temperature of bearing cones (27) and (29).

22. Install bearing cone (27) onto gear (28).

23. Install gear (28) into gear (23).

24. Install bearing cone (29) onto gear (28).

25. Position retainer (26).

26. Install bolt (25).
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    Illustration 11	g00954593

27. Raise the temperature of bearing cones (24). Install bearing cones (24) onto gear (22).
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    Illustration 12	g00954590

    Note: Gears (22) and (23) must be installed into the case assembly at the same time.

28. Install gear (22) and gear (23) into the case assembly.
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    Illustration 13	g00984442

29. Install bearing cup (21) into cover (19). Dimension (Z) is 4.30 mm (0.170 inch).
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    Illustration 14	g00984467

30. Position cover (19).

31. Install dowels (20), if dowels (20) were removed. Install bolts (18).

32. Install bolt (25) and retainer (26).
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    Illustration 15	g00994324

33. Position shim (17) that is equal to 4.30 mm (0.169 inch) onto cover (19).

34. Install cover (16) and bolts (15).
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    Illustration 16	g00984480

35. Install Tooling (E) and Tooling (F).

36. Rotate gear (28) in order to find the high spot on the face of bearing cone (29).

37. Zero Tooling (E).

38. Obtain an end play measurement.

39. Repeat Step 36 through Step 38 in order to ensure that an accurate measurement has been obtained.

40. Remove Tooling (E) and Tooling (F).
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    Illustration 17	g00994324

41. Remove bolts (15) and cover (16).

42. Remove shims (17) in order to adjust the end play. The end play should be 0.080 ± 0.050 mm (0.0031 ± 0.0020 inch).

43. Install cover (16) and bolts (15).

44. Repeat Step 35 through Step 43 in order to ensure that an accurate measurement has been obtained.
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    Illustration 18	g00984518

45. Install retainer (26) and bolt (25).
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    Illustration 19	g00973888

46. Lower the temperature of bearing cup (13).

47. Install O-ring seal (12) and bearing cup (13) onto cage (9).
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    Illustration 20	g00954584

48. Install shims (10).

    Note: Allow clearance for the bearing.

49. Install cage (9) and bolts (8).
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    Illustration 21	g00994870

50. Use Tooling (G) and Tooling (E) in order to check the end play.

51. Rotate gear (22) in order to find the high spot on the face of bearing cone (24).

52. Zero Tooling (E).

53. Obtain an end play measurement.

54. Repeat Step 36 through Step 38 in order to ensure that an accurate measurement has been obtained.

55. Remove Tooling (E) and Tooling (G).
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    Illustration 22	g00954584

56. Remove bolts (8) and cage (9).

57. Add or remove shims (10), as required.

58. Install cage (9) and bolts (8).

59. Repeat Step 50 through Step 58 in order to ensure accuracy.
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    Illustration 23	g00974756

60. Remove bolts (8) and cage (9).
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    Illustration 24	g00974755

61. Lower the temperature of bearing (14).

62. Install bearing (14) into cage (9).

63. Apply Tooling (M) into the seal bore in cage (9).

64. Use Tooling (K) in order to install seal (11) into cage (9).
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    Illustration 25	g00974756

65. Position cage (9).

66. Install bolts (8). Tighten bolts (8) to a torque of 135 ± 15 N·m (100 ± 11 lb ft).
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    Illustration 26	g00994736

67. Remove bolt (25). Install Tooling (L) and bolt (25).

68. Install Tooling (E).

69. Make three backlash measurements at 120 degrees intervals. The backlash should be 0.20 ± 0.10 mm (0.008 ± 0.004 inch).

70. Add or remove shims (42) in order to obtain the correct settings.
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    Illustration 27	g00954581

71. Install bracket (6).

72. Install sensors (5). Use Tooling (J) in order to set the distance between the face of the sensors (5) and the gear teeth. The distance must be 0.71 ± 0.18 mm (0.028 ± 0.007 inch). Tighten the nut to a torque of 25 ± 5 N·m (18 ± 4 lb ft).

73. Connect harness assemblies (7).
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    Illustration 28	g00954580

74. Install pins (3), if pins (3) have been removed.

75. Install O-ring seals (4).
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    Illustration 29	g00954579

76. Install bracket assemblies (2).
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    Illustration 30	g00959670

77. Remove bevel and transfer gears (1) from Tooling (A).

End By:

1. Connect the transmission and bevel gears. Refer to Disassembly and Assembly, "Transmission and Bevel Gears - Connect".