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

Assembly Procedure

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Illustration 1	g02132155

1. Apply Tooling (D) to the surface of dowels (46) . Install dowels (46) .

2. Raise the temperature of roller bearing (47) . Install the roller bearing (47) on motor housing (48) .

3. Install Duo-Cone seal (45) .

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Illustration 2	g02131888

4. Lower the temperature of bearing races (43) . Install bearing races (43) in sprocket housing (41) .

5. Install Duo-Cone seal (44) .

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Illustration 3	g02131887

6. Attach Tooling (C) and a suitable lifting device to sprocket housing (41) . The weight of sprocket housing (41) is approximately 107 kg (235 lb). Install sprocket housing (41) .

7. Raise the temperature of roller bearing (42) . Install the roller bearing (42) .

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Illustration 4	g02135728

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Illustration 5	g02134214

8. Use Tooling (E) and a suitable press in order to apply force to roller bearing (42) . Apply a force of 4000 kg (8818 lb) to the top of Tooling (E) . Rotate sprocket housing (41) in order to seat the roller bearings.

9. Reduce the force on top of Tooling (E) to 3000 ± 300 kg (6614 ± 661 lb). Use Tooling (F) in order to measure Dimension (X) . Record Dimension (X) .

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Illustration 6	g02134175

10. Use Tooling (F) in order to measure Dimension (W) on gear (39) . Record Dimension (W) .

11. Remove Tooling (E) .

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Illustration 7	g02131886

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Illustration 8	g02131882

12. Subtract Dimension (X) from Dimension (W) and record the difference as Dimension (V) . The correct shim thickness is Dimension (V) . Use Tooling (G) in order to measure the correct thickness of shims (40) . The tolerance of Dimension (V) is 0 ± 0.05 mm (0 ± 0.002 inch).

Note: Use a maximum of two shims (40) . If two shims (40) are used to achieve the proper dimension, install the thinner of the two shims toward gear (39) .

13. Install shims (40) .

14. Apply Tooling (G) to the threads of bolts (38) . Install gear (39) and bolts (38) . Tighten bolts (38) to a torque of 900 ± 100 N·m (665 ± 75 lb ft).

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Illustration 9	g02131881

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Illustration 10	g02133219

Note: Make sure that the spring pin hole in planetary shaft (32) is aligned with the spring pin hole in the carrier.

15. Install roller bearings (35) , planetary gear (36) , washer (37) , washer (33) , planetary shaft (32) , and spring pin (31) into carrier assembly (34) . Install spring pin (31) until spring pin (31) is even with the outside surface of the carrier. Align the split in spring pin (31) to the top or the bottom.

16. Make a stake mark on each side of the spring pin hole in the carrier, as shown. The stake mark will prevent the spring pin from falling out of the spring pin hole. Make a stake mark at Dimension (Y) . Dimension (Y) is 2.25 ± 0.75 mm (0.089 ± 0.030 inch).

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Illustration 11	g02131879

17. 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). Install planetary gear assembly (30) .

18. Install O-ring seal (29) .

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Illustration 12	g02131878

19. Attach Tooling (A) and a suitable lifting device to ring gear (27) . The weight of ring gear (27) is approximately 70 kg (155 lb). Install ring gear (27) and bolts (28) . Tighten bolts (28) to a torque of 520 ± 70 N·m (385 ± 52 lb ft).

20. Install spacer (26) .

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Illustration 13	g02131877

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Illustration 14	g02133219

21. Install roller bearing (22) , planetary gear (23) , washer (24) , washer (20) , planetary shaft (18) , and spring pin (17) into carrier assembly (21) . Install spring pin (17) until spring pin (17) is even with the outside surface of the carrier. Align the split in spring pin (17) to the top or the bottom.

22. Make a stake mark on each side of the spring pin hole in the carrier, as shown. The stake mark will prevent the spring pin from falling out of the spring pin hole. Make a stake mark at Dimension (Y) . Dimension (Y) is 2.25 ± 0.75 mm (0.089 ± 0.030 inch).

23. Install sun gear (25) and retaining ring (19) .

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Illustration 15	g02131876

24. 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). Install planetary gear assembly (15) .

25. Install spacer (16) .

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Illustration 16	g02131875

26. Install sun gear (14) and retaining ring (10) .

27. Install washer (12) , roller bearing (11) , planetary gear (9) , washer (8) , and retaining ring (7) on carrier assembly (13) .

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Illustration 17	g02131415

28. Install planetary gear assembly (6) , spacer (5) , and sun gear (4) .

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Illustration 18	g02135393

29. Use the correct plate (3) in order to achieve Dimension (Z) . Dimension (Z) is 1.00 to 2.00 mm (0.039 ± 0.079 inch).

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Illustration 19	g02131414

30. Use Tooling (J) in order to secure plate (3) in cover (2) .

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Illustration 20	g02131413

31. Apply Tooling (K) to the mating surface of cover (1) . Attach Tooling (A) and a suitable lifting device to cover (2) . The weight of cover (2) is approximately 20 kg (45 lb). Install cover (2) and bolts (1) . Tighten bolts (1) to a torque of 105 ± 20 N·m (80 ± 15 lb ft).

32. Remove Tooling (A) and the suitable lifting device. Apply Tooling (H) to the threads of the set screws. Install the set screws so that the setscrews are flush with cover (1) .

End By: Install the final drive and the travel motor.