330D, 336D, 336D2, 340D and 340D2 Excavators and 336D MHPU Mobile Hydraulic Power Unit Machine Systems Final Drive - Disassemble - Type-Two Caterpillar

Disassembly Procedure

Start By:

1. Remove the final drive and the travel motor.

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

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Illustration 1	g02151790

Note: The weight of the entire final drive assembly is approximately 550 kg (1200 lb).

2. Attach Tooling (A) and a suitable lifting device to cover (2) . The weight of cover (2) is approximately 32 kg (70 lb). Remove bolts (1) and cover (2) .

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Illustration 2	g00879362

3. Remove bolts (3) . Remove gear (5) . Remove plate (6) . Remove plugs (4) from cover (2) .

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Illustration 3	g00879365

4. Remove O-ring seal (7) from plugs (4) .

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Illustration 4	g02151806

5. Remove sun gear (8) , spacer (9) , and planetary gear assembly (10) .

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Illustration 5	g02151809

6. Remove retaining ring (11) , washer (12) , planetary gear (13) , roller bearing (15) , and washer (16) from carrier assembly (17) .

7. Repeat Step 6 for the remaining two gear assemblies.

8. Remove retaining ring (14) and sun gear (18) from carrier assembly (17) .

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Illustration 6	g02152150

9. Use a suitable press to remove the shafts from carrier assembly (17) .

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Illustration 7	g02151813

10. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (19) . The weight of planetary gear assembly (19) is approximately 48 kg (105 lb). Remove planetary gear assembly (19) .

11. Remove spacer (20) .

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Illustration 8	g02151782

12. Drive spring pin (21) into planetary shaft (22) with a suitable hammer and a suitable punch.

13. Remove planetary shaft (22) , washer (24) , roller bearing (25) , planetary gear (26) , and washer (27) from the planetary gear assembly (19) .

14. Remove spring pin (21) from planetary shaft (22) with a suitable hammer and a suitable punch.

15. Remove retaining ring (23) and sun gear (28) from planetary gear assembly (19) .

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Illustration 9	g02152208

16. Attach Tooling (A) and a suitable lifting device to planetary gear assembly (29) . The weight of planetary gear assembly (29) is approximately 38 kg (85 lb). Remove planetary gear assembly (29) .

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Illustration 10	g02152467

17. Drive spring pin (30) into planetary shaft (31) with a suitable hammer and a suitable punch.

18. Remove planetary shaft (31) , washer (32) , roller bearings (33) , planetary gear (34) , and washer (35) from the planetary gear assembly (29) .

19. Remove spring pin (30) from planetary shaft (31) with a suitable hammer and a suitable punch.

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Illustration 11	g02152399

20. Attach Tooling (A) and a suitable lifting device to ring gear (36) . The weight of ring gear (36) is approximately 66 kg (146 lb). Remove ring gear (36) .

21. Remove O-ring seal (37) from sprocket housing (38) .

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Illustration 12	g02152525

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Illustration 13	g02152528

Note: Mark the orientation of coupling gear (40) for assembly purposes.

22. Remove bolts (39) from coupling gear (40) . Use Tooling (C) in order to remove coupling gear (40) from the motor housing.

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Illustration 14	g02152546

23. Remove shims (41) from the motor housing.

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Illustration 15	g02152552

Note: Upper bearing cone (42) and lower bearing cone (43) are a slip fit on the motor housing. While you remove sprocket housing (38) from the motor housing, upper bearing cone (42) may stay with the sprocket housing, or upper bearing cone (42) may stay on the motor housing.

24. Attach Tooling (B) and a suitable lifting device to sprocket housing (38) . The weight of sprocket housing (38) is approximately 109 kg (240 lb). Remove sprocket housing (38) and upper bearing cone (42) .

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Illustration 16	g02152595

25. Remove dowels (45) from the motor housing.

26. Remove Duo-Cone seal (44) from the motor housing.

27. If lower bearing cone (43) remained on the motor housing, then remove the lower bearing cone.

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Illustration 17	g02152598

28. Remove Duo-Cone seal (46) from the sprocket housing.

29. If upper bearing cone (42) remained on the sprocket housing, then remove the upper bearing cone.

30. Remove the bearing cups from the sprocket housing.

(Type 1) Disassembly Procedure

Start By:

1. Remove the final drive and the travel motor.

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Illustration 18	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 19	g02131414

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

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Illustration 20	g02131415

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

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Illustration 21	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 22	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 23	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 24	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 25	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 26	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 27	g02131882

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Illustration 28	g02131885

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

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Illustration 29	g02131886

20. Remove shims (40) .

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Illustration 30	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 31	g02131888

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

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Illustration 32	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) .