CIPI UNDERCARRIAGE Arrangements: 9Q-5195, 9Q-5197, 9Q-5198, 9Q-5232, 9Q-5504, 9Q-5643, 9Q-5651, 9Q-5727, 9Q-5728, 9Q-5729, 9Q-5730, 9Q-5731, 9Q-5747, 9Q-5876, 180-4029, and 213-3892 Caterpillar

Disassembly Procedure

Start By:

1. Remove the final drive. Refer to Disassembly and Assembly, "Final Drive - Remove" in this manual.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will prevent dirt from entering the internal mechanism.

1. Put an alignment mark across the sections of the final drive for assembly purposes. The parts must be reinstalled in the part's original locations.

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Illustration 1	g00708089

2. Fasten the final drive to Tooling (A), as shown. The combined weight of the final drive and final drive sprocket is 272 kg (600 lb).

3. Remove bolts (1) and the washers that hold the cover in position.

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Illustration 2	g00708090

4. Remove the setscrews from the cover. Fasten Tooling (B) and a hoist to cover (2), as shown. Remove the cover. The weight of the cover is approximately 27 kg (60 lb).

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Illustration 3	g00708091

5. Remove thrust plate (3) from cover (2) .

6. Remove two plugs (4) from cover (2) .

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Illustration 4	g00708235

7. Remove O-ring seals (5) from both plugs (4) that were in the cover.

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Illustration 5	g00708092

8. Remove spacer (6) from carrier assembly (7) .

9. Remove sun gear (8) from carrier assembly (7) .

10. Remove carrier assembly (7) by lifting the carrier assembly straight up. The weight of the carrier assembly is approximately 23 kg (51 lb).

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Illustration 6	g00708095

11. Disassemble carrier assembly (7), as follows.

    1. Drive spring pin (10) into planetary shaft (9) with a hammer and a punch.
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    Illustration 7	g00708144

    2. Remove planetary shaft (9) with spring pin (10) from the carrier assembly.

    3. Remove spring pin (10) from planetary shaft (9) with a hammer and a punch.
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    Illustration 8	g00708218

    4. Remove two thrust washers (11) and planetary gear (13) from the carrier assembly.

    5. Remove bearing (12) from planetary gear (13) .

12. Repeat Steps 11.a through 11.e in order to remove the other two planetary gears from the carrier assembly.

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Illustration 9	g00708162

13. Remove sun gear (14) from carrier assembly (15) .

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Illustration 10	g00708325

14. Remove spacer (16) .

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Illustration 11	g00708184

Note: It will be necessary to pry ring gears (17) away from main housing (18) in order to install the lifting slings.

15. Fasten lifting slings and a hoist to ring gears (17), as shown. Remove the ring gears from main housing (18). The weight of the ring gears is 48 kg (106 lb).

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Illustration 12	g00708360

16. Use a screwdriver or a chisel in order to separate the two ring gears (17) .

    Note: The two ring gears are held together with 1U-8846 Sealant. It may be necessary to heat the ring gears in order to soften the sealant. Do not heat over 135 °C (275 °F) for more than thirty minutes.

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Illustration 13	g00708172

17. Position a 12.7 mm (0.50 inch) shackle under carrier assembly (15) .

18. Fasten a lifting sling and a hoist to the shackle.

19. Slowly lift carrier assembly (15) from the final drive. The weight of the carrier assembly is 42 kg (93 lb).

20. Disassemble carrier assembly (15), as follows.
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    Illustration 14	g00708175

    1. Drive spring pin (20) into planetary shaft (19) with a hammer and a punch.
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    Illustration 15	g00708370

    2. Remove planetary shaft (19) with spring pin (20) from the carrier assembly.

    3. Remove spring pin (20) from planetary shaft (19) with a hammer and a punch.
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    Illustration 16	g00708220

    4. Remove two thrust washers (21) and planetary gear (23) from the carrier assembly.

    5. Remove two bearings (22) from the planetary gear.

21. Repeat Steps 20.a through 20.e in order to remove the other two planetary gears from the carrier.

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Illustration 17	g00708186

22. Remove O-ring seal (24) from main housing (18) .

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Illustration 18	g00708187

23. Remove bolts (25) from gear (26) .

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Illustration 19	g00708202

24. Use Tooling (C) in order to remove gear (26) from main housing (18) .

    Note: The motor housing will separate from the main housing (18) once gear (26) is removed. Make sure that the motor housing is supported.

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Illustration 20	g00708211

25. Remove shims (27) from the main housing.

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Illustration 21	g00708212

26. Fasten Tooling (D) and a hoist to main housing (18), as shown.

27. Use a hammer and a punch in order to separate main housing (18) and the final drive sprocket from the motor housing (28). The combined weight of the main housing and final drive sprocket is approximately 84 kg (185 lb).

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Illustration 22	g00708214

28. Remove Duo-Cone seal (29) from motor housing (28) .

29. Remove alignment pins (30) .

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Illustration 23	g00708215

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Illustration 24	g00708216

30. Remove Duo-Cone seal (31) from main housing (18) .

31. Use Tooling (E) in order to remove bearings (32) and (33) from the main housing.

32. If necessary, remove the final drive sprocket from the main housing.

    Reference: Refer to Disassembly and Assembly, "Final Drive Sprocket - Remove and Install" in this manual for the removal of the final drive sprocket from the main housing.