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

Assembly Procedure

1. Make sure that all parts of the final drive are thoroughly clean and free of dirt and debris prior to assembly. Check the condition of all O-ring seals that are used in the final drive. If any of the seals are damaged, use new parts for replacement.

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Illustration 1	g03873123

2. Use Tooling (D) to install Duo-Cone seal (45) .

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Illustration 2	g03873131

3. Apply Tooling (F) to the surface of dowels (46) . Install dowels (46) .

4. Raise the temperature of lower bearing cone (47) . Install lower bearing cone (47) on motor housing (48) .

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Illustration 3	g03873115

5. Lower the temperature of bearing cups (43) . Install bearing cups (43) in sprocket housing (41) .

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Illustration 4	g03873145

6. Use Tooling (D) to install Duo-Cone seal (44) .

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Illustration 5	g03873151

7. Attach Tooling (B) and a suitable lifting device to sprocket housing (41) . The weight of sprocket housing (41) is approximately 110 kg (243 lb). Install sprocket housing (41) .

8. Raise the temperature of upper bearing cone (42) . Install upper bearing cone (42) .

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Illustration 6	g03873237

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Illustration 7	g03873187

9. Use Tooling (E) and a suitable press in order to apply force to upper bearing cone (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.

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

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Illustration 8	g03873199

11. Remove Tooling (E) .

12. Use Tooling (K) in order to measure Dimension (W) on coupling gear (39) . Record Dimension (W) .

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Illustration 9	g03873204

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Illustration 10	g03873207

13. Subtract Dimension (X) from Dimension (W) and record the difference as Dimension (V) . The correct shim thickness is Dimension (V) . Use Tooling (L) in order to measure the correct thickness of shims (40) . The tolerance of Dimension (V) is 0 ± 0.05 mm (0.0 ± 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 coupling gear (39) .

14. Install shims (40) .

15. Apply Tooling (G) to the threads of bolts (38) . Install coupling 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 11	g03873246

16. Install O-ring seal (37) in sprocket housing (41) .

17. Thoroughly clean the mating surface of sprocket housing (41) that makes contact with ring gear (36) .

18. Attach Tooling (A) and a suitable lifting device to ring gear (36) . Put ring gear (36) in position on sprocket housing (41) . The weight of ring gear (36) is approximately 65 kg (143 lb). Make sure that the alignment marks on sprocket housing (38) and ring gear (36) are lined up with each other.

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Illustration 12	g02152467

19. Install roller bearings (33) in planetary gear assembly (29) .

20. Install washer (32) and washer (35) , and install planetary gear (34) in planetary gear assembly (29) .

21. Install planetary shaft (31) in carrier assembly (29) .

22. Drive spring pin (30) into planetary shaft (31) .

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Illustration 13	g00941047
The stake mark is at position (S) .

23. Orient the split in spring pin (30) vertically to the carrier. Align the split in the spring pin to the top or to the bottom. Make a stake mark on each side of the spring pin hole in the carrier. Each stake mark should be approximately 1.5 mm (0.06 inch) from the outside diameter of the spring pin hole.

24. Repeat Steps 19 through 23 in order to install the other two planetary gears in the carrier assembly.

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Illustration 14	g02152208

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

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Illustration 15	g02151782

26. Position sun gear (28) in planetary gear assembly (19) and install retaining ring (23) .

27. Install roller bearing (25) in planetary gear (26) .

28. Install washer (24) and washer (27) , and install planetary gear (26) in planetary gear assembly (19) .

29. Install planetary shaft (22) in planetary gear assembly (19) .

30. Drive spring pin (21) into planetary shaft (22) .

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Illustration 16	g00941047
The stake mark is at position (S) .

31. Orient the split in spring pin (21) vertically to the carrier. Align the split in the spring pin to the top or to the bottom. Make a stake mark on each side of the spring pin hole in the carrier. Each stake mark should be approximately 1.5 mm (0.06 inch) from the outside diameter of the spring pin hole.

32. Repeat Steps 27 through 31 in order to install the other two planetary gears in the carrier.

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Illustration 17	g02151813

33. Install spacer (20) .

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

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Illustration 18	g02153647

Note: Make sure that the oil passages in the shafts are oriented toward the center of carrier assembly (17) .

35. Raise the temperature of carrier assembly (17) . Lower the temperature of the shafts. Install the shafts into carrier assembly (17) until the groove of the shafts is at Dimension (A) . Dimension (A) equals 25.00 ± 0.10 mm (0.984 ± 0.004 inch).

36. Make eight stake marks at distance of Dimension (C) from each shaft. Dimension (C) equals 2.0 ± 1.0 mm (0.08 ± 0.04 inch). The width of each stake mark should be equal to Dimension (B) . Dimension (B) equals 4.0 ± 1.0 mm (0.16 ± 0.04 inch).

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Illustration 19	g02151809

37. Install sun gear (18) and retaining ring (14) .

38. Install washer (16) and roller bearing (15) . Install planetary gear (13) and washer (12) . Install retaining ring (11) .

39. Repeat Step 38 for the other two planetary gears.

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Illustration 20	g02151806

40. Install planetary gear assembly (10) , spacer (9) and sun gear (8) .

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Illustration 21	g00879365

41. Install O-ring seals (7) on plugs (4) .

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Illustration 22	g00879362

42. Install plugs (4) in cover (2) . Tighten plugs (4) to a torque of 80 ± 10 N·m (59 ± 7 lb ft). Install plate (6) in cover (2) . Position gear (5) and install bolts (3) .

43. Place a piece of solder in the center of gear (8) .

    Note: You may need to apply some grease to the solder in order to keep the solder in position on gear (8) .

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Illustration 23	g02151790

44. Use Tooling (A) and a suitable lifting device to install cover (2) . The weight of cover (2) is approximately 32 kg (70 lb).

45. Install four bolts (1) at 90 degrees from each other.

46. Remove bolts (1) .

47. Use Tooling (A) and a suitable lifting device to remove cover (2) .

48. Use a micrometer to measure the thickness of the solder. Record this measurement in order to determine the thickness of the shims for plate (6) . Adjust the shims in order to obtain a clearance of 1.000 + 1.000 mm (0.0394 + 0.0394 inch) between plate (6) and gear (8) .

49. Apply Tooling (H) to the mating surfaces of cover (2) and the housing.

50. Use Tooling (A) and a suitable lifting device to Install cover (2) .

51. Install bolts (1) . Tighten bolts (1) to a torque of 900 ± 100 N·m (664 ± 74 lb ft).

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Illustration 24	g01304937

52. Remove the plug (not shown) from cover (2) . Attach Tooling (J) to cover (2) . Reduce the air pressure at the source to 103 kPa (15 psi). Apply air pressure to Tooling (J) . This air will test the Duo-Cone seals.

53. Use the ball valve on Tooling (J) to eliminate the air pressure to the final drive. A pressure of 98 kPa (14.2 psi) must be maintained for 30 seconds.

54. Remove Tooling (J) . Install the plug . Torque the plug to 80 ± 10 N·m (59 ± 7 lb ft).

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

(Type 1) Assembly Procedure

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Illustration 25	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 26	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 27	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 28	g02135728

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Illustration 29	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 30	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 31	g02131886

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Illustration 32	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 33	g02131881

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Illustration 34	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 35	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 36	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 37	g02131877

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Illustration 38	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 39	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 40	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 41	g02131415

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

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Illustration 42	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 43	g02131414

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

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Illustration 44	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.