824H Wheel Dozer, 825H Soil Compactor and 826H Landfill Compactor Power Train Caterpillar

Disassembly Procedure

Start By:

1. Separate the torque converter from the transmission and from the output transfer gears. Refer to Disassembly and Assembly, "Torque Converter from Transmission, Output Transfer Gears - Separate".

1. Place the torque converter housing assembly (2) on wood blocks.
   Show/hide table

   Illustration 1	g00503225

2. Remove bolts (1) and the washers from torque converter housing assembly (2).
   Show/hide table

   Illustration 2	g01083768

3. Install Tooling (A) to torque converter housing assembly (2), as shown. Attach a suitable lifting device to Tooling (A). The weight of torque converter housing assembly (2) is approximately 120 kg (265 lb).

4. Use Tooling (F) to loosen torque converter housing assembly (2) from the torque converter.

5. Carefully remove torque converter housing assembly (2) from the torque converter.
   Show/hide table

   Illustration 3	g00871317

6. Remove O-ring seal (3) from torque converter housing assembly (2).
   Show/hide table

   Illustration 4	g00871318

7. Remove bolts (4) and the washers from pump adapter (5) and torque converter housing assembly (2).
   Show/hide table

   Illustration 5	g00871264

8. Use Tooling (F) to remove pump adapter (5) from torque converter housing assembly (2).
   Show/hide table

   Illustration 6	g00871319

9. Use Tooling (C) to remove bearing cup (6), O-ring seal (8), and shims (7) from pump adapter (5). Refer to Illustration 13 for Tooling (C).
   Show/hide table

   Illustration 7	g00871326

10. Remove pump drive gear (9) from torque converter housing assembly (2).
    Show/hide table

    Illustration 8	g01090131

11. Use Tooling (C) to remove bearing cup (10) from torque converter housing assembly (2). Refer to Illustration 13 for Tooling (C).
    Show/hide table

    Illustration 9	g01090133

12. Use Tooling (B) to remove bearing cones (11) from each side to pump drive gear (9).
    Show/hide table

    Illustration 10	g01090135

13. Remove bolt (12) and the washer from torque converter housing assembly (2).

14. Use Tooling (F) to push the shaft assembly (14) out of torque converter housing assembly (2).

15. Remove idler gear (13) from torque converter housing assembly (2).
    Show/hide table

    Illustration 11	g01090137

16. Remove O-ring seal (15) from shaft assembly (14).
    Show/hide table

    Illustration 12	g00871365

17. Remove bearing cone (16), bearing cone spacer (17), and bearing cone (18) from idler gear (13).
    Show/hide table

    Illustration 13	g00871366

18. Use Tooling (C) to remove bearing cup (19) from idler gear (13).
    Show/hide table

    Illustration 14	g00871367

19. Remove bearing cup spacer (20) from idler gear (13).

20. Use Tooling (C) in order to remove bearing cups (21) (not shown) from the other side of idler gear (13). Refer to Illustration 13 for proper use of Tooling (C).
    Show/hide table

    Illustration 15	g01090700

21. Remove retaining ring (22) from the inside of idler gear (13).
    Show/hide table

    Illustration 16	g00871370

22. Remove studs (23) from torque converter housing assembly (2).
    Show/hide table

    Illustration 17	g00871267

    Show/hide table

    Illustration 18	g01090212

23. Remove retaining ring (24). Remove bearing carrier (25) from drive flange (26).

24. Remove O-ring seal (27) from bearing carrier (25).

25. Remove seal ring (28) from ring carrier (29).
    Show/hide table

    Illustration 19	g01090248

26. Use Tooling (D) and a suitable press to remove ring carrier (29) from bearing carrier (25).
    Show/hide table

    Illustration 20	g01090257

27. Remove retaining ring (30) from bearing carrier (25).
    Show/hide table

    Illustration 21	g01090262

28. Use Tooling (D) and a suitable press to remove inner bearing (30A) from bearing carrier (25).
    Show/hide table

    Illustration 22	g01090272

29. Remove bolts (31) and the washers from drive gear (32).

30. Remove drive gear (32) from drive flange (26).
    Show/hide table

    Illustration 23	g00871277

31. Use Tooling (E) and a suitable press to remove the outer bearing race (32A) (not shown) from drive gear (32).
    Show/hide table

    Illustration 24	g00871278

32. Remove retaining ring (33) from drive gear (32).
    Show/hide table

    Illustration 25	g01090391

33. Remove bolts (34) and the washers from drive flange (26) and rotating housing (35).
    Show/hide table

    Illustration 26	g01090395

34. Use bolts (34) that were removed in the previous step as forcing screws to remove drive flange (26) from rotating housing (35). The weight of drive flange (26) is approximately 23 kg (51 lb).
    Show/hide table

    Illustration 27	g01090408

35. Remove bolts (36) from drive flange (26).
    Show/hide table

    Illustration 28	g01090398

36. Remove drive flange (26) from the impeller (37).
    Show/hide table

    Illustration 29	g01090412

37. Position impeller hub (38) on suitable blocks.

38. Remove impeller (37) from impeller hub (38).

    Note: If the torque converter is equipped with a freewheel stator, continue with Steps 39 through 45.

    Show/hide table

    Illustration 30	g01090472

39. Remove thrust bearing (39) and two thrust bearing races (40) from carrier assembly (41).
    Show/hide table

    Illustration 31	g01090479

40. Remove carrier assembly (41) and stator (42) as a unit from rotating housing (35).
    Show/hide table

    Illustration 32	g00870212

41. Use Tooling (G) in order to remove retaining ring (43) from stator (42). Remove thrust race (44) from stator (42).
    Show/hide table

    Illustration 33	g00870214

42. Remove 11 freewheel rollers (45) and 11 freewheel springs (46) from freewheel cam (47). Remove stator (42) from carrier assembly (41).
    Show/hide table

    Illustration 34	g01090489

43. Use Tooling (G) in order to remove retaining ring (48) from stator (42). Remove side plate (49) from stator (42).

44. Use Tooling (E) and a suitable press in order to remove freewheel cam (47) from stator (42).

    Note: If necessary, raise the temperature of the stator to a maximum of 135 °C (275 °F) for approximately fifteen minutes.

    Show/hide table

    Illustration 35	g00870216

45. Remove thrust bearing (50) from carrier assembly (41). Remove sleeve bearing (51) from carrier assembly (41).
    Show/hide table

    Illustration 36	g01090496

46. Remove two thrust bearing races (52) and the thrust bearing from the turbine hub (53).
    Show/hide table

    Illustration 37	g01090502

47. Remove turbine (54) and turbine hub (53) as a unit from rotating housing (35).
    Show/hide table

    Illustration 38	g01090508

48. Remove bolts (55) and the washers from turbine (54) and turbine hub (53).
    Show/hide table

    Illustration 39	g01090522

49. Remove turbine hub (53) from turbine (54).
    Show/hide table

    Illustration 40	g01090526

50. Remove retaining ring (56) from turbine hub (53).
    Show/hide table

    Illustration 41	g01090531

51. Remove two thrust bearing races (57) and thrust bearing (58) from cover assembly (59).
    Show/hide table

    Illustration 42	g01090549

52. Remove bolts (61) and the washers from cover assembly (59).

53. Remove cover assembly (59) from rotating housing (35).

54. Remove ring seal (60) from rotating housing (35).
    Show/hide table

    Illustration 43	g01090558

55. Remove sleeve bearing (62) from cover assembly (59).