336E Excavator and 336E MHPU Mobile Hydraulic Power Unit Machine Systems Final Drive - Disassemble Caterpillar

Disassembly Procedure

Start By:

1. Remove the final drive and the travel motor.

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Illustration 1	g02131413

1. Attach Tooling (A) and a suitable lifting device to cover (2). The weight of cover (2) is approximately 20 kg (45 lb). Remove bolts (1) and cover (2).
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   Illustration 2	g02131414

2. Remove plate (3) from cover (2).
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   Illustration 3	g02131415

3. Remove sun gear (4), spacer (5), and planetary gear assembly (6).
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   Illustration 4	g02131875

4. Remove retaining ring (7), washer (8), planetary gear (9), roller bearing (11), and washer (12) from carrier assembly (13).

5. Remove retaining ring (10) and sun gear (14) from carrier assembly (13).
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   Illustration 5	g02131876

6. Remove spacer (16).

7. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (15). The weight of planetary gear assembly (15) is approximately 32 kg (70 lb). Remove planetary gear assembly (15).
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   Illustration 6	g02131877

8. Drive spring pin (17) into planetary shaft (18) with a suitable hammer and a suitable punch.

9. Remove planetary shaft (18), washer (20), roller bearing (20), planetary gear (23), and washer (24) from the carrier assembly (21).

10. Remove spring pin (17) from planetary shaft (18) with a suitable hammer and a suitable punch.

11. Remove retaining ring (19) and sun gear (25) from carrier assembly (21).
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    Illustration 7	g02131878

12. Remove spacer (26).

13. Attach Tooling (A) and a suitable lifting device to ring gear (27). The weight of ring gear (27) is approximately 70 kg (155 lb). Remove bolts (28) and ring gear (27).
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    Illustration 8	g02131879

14. Remove O-ring seal (29).

15. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (30). The weight of planetary gear assembly (30) is approximately 57 kg (125 lb). Remove planetary gear assembly (30).
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    Illustration 9	g02131881

16. Drive spring pin (31) into planetary shaft (32) with a suitable hammer and a suitable punch.

17. Remove planetary shaft (32), washer (33), roller bearings (35), planetary gear (36), and washer (36) from the carrier assembly (34).

18. Remove spring pin (31) from planetary shaft (32) with a suitable hammer and a suitable punch.
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    Illustration 10	g02131882

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    Illustration 11	g02131885

19. Remove bolts (38). Use Tooling (B) in order to remove gear (39).
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    Illustration 12	g02131886

20. Remove shims (40).
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    Illustration 13	g02131887

21. Attach Tooling (C) and a suitable lifting device to sprocket housing (41). The weight of sprocket housing (41) is approximately 107 kg (235 lb). Remove sprocket housing (41) and roller bearing (42).
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    Illustration 14	g02131888

22. Remove bearing races (43) and Duo-Cone seal (44) from sprocket housing (41).
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    Illustration 15	g02132155

23. Remove Duo-Cone seal (45) and roller bearing (47) from motor housing (48). The weight of motor housing (48) is approximately 91 kg (200 lb).

24. If necessary, remove dowels (46) from motor housing (48).