854G Wheel Tractor and 992G Wheel Loader Power Train Final Drive and Wheel - Assemble Caterpillar

Assembly Procedure

Show/hide table



Illustration 1	g00370613

Show/hide table



Illustration 2	g00371332

1. Heat bearing cone (25) to 135°C (275°F). Use suitable gloves to install bearing cone (25) on spindle (20), as shown. Make sure that the bearing cone is properly seated.

2. Use Tooling (D) to install Duo-Cone seal (24). Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install" for the correct procedure. Make sure that all contact surfaces are clean and dry before you install the seal.

Show/hide table



Illustration 3	g00370591

Show/hide table



Illustration 4	g00371352

3. Lower the temperature of bearing cups (21) and (22). Use suitable gloves to install the bearing cups. Make sure that the bearing cups are properly seated.

4. Use Tooling (D) to install Duo-Cone seal (23). Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install" for the correct procedure. Make sure that all contact surfaces are clean and dry before you install the seal.

Show/hide table



Illustration 5	g00370590

Show/hide table



Illustration 6	g00370588

5. Apply clean final drive oil to the bearing cone and to the contact surfaces of the Duo-Cone seal.

6. Secure Tooling (C) to wheel (4). Attach a hoist to Tooling (C) .

7. Use Tooling (C) to raise wheel (4) to a vertical position. Carefully install wheel (4) on spindle (20) .

Show/hide table



Illustration 7	g00370584

8. Heat bearing cone (18) to 135°C (275°F). Use suitable gloves to install bearing cone (18) on hub (15), as shown. Make sure that the bearing cone is properly seated.

Show/hide table



Illustration 8	g00370583

9. Install Tooling (B) in the holes of hub (15), as shown.

10. Attach a hoist to the lifting slings. Carefully install hub (15) in gear (16). The weight of the hub is 193 kg (425 lb).

    Note: The weight of the gear is 127 kg (280 lb).

Show/hide table



Illustration 9	g00371054

Show/hide table



Illustration 10	g00370582

11. Install ring (19) on gear (16) .

12. Install six bolts (17) that hold ring (19) in the groove of gear (16). The torque for bolts (17) is 25 ± 6 N·m (19 ± 4 lb ft).

Show/hide table



Illustration 11	g00370581

13. Install Tooling (B) in the hole of hub (15). Repeat this step for the two remaining holes.

14. Attach a hoist to the lifting slings. Carefully install hub (15) and gear (16) in the wheel as a unit. The combined weight of the hub and of the gear is 320 kg (705 lb).

Note: Steps 15 through 27 are for the proper wheel bearing adjustment.

Show/hide table



Illustration 12	g00372734

Show/hide table



Illustration 13	g00372735

15. Use Tooling (F) to measure the thickness of retainer (13) at each of the three small gauge holes. Average the three measurements and record the result.

16. Install retainer (13) without the shims. Apply oil on the threads of five bolts (12) and install the bolts, as shown.

17. Tighten five bolts (12) to a torque of 110 ± 15 N·m (81 ± 11 lb ft) according to the tightening sequence in Illustration 13.

18. Rotate the wheel by 360 degrees. Check the bolts and tighten the bolts again, if necessary.

19. Loosen bolts (12). Rotate the wheel by 360 degrees in order to unload the bearings.

20. Tighten bolts (12) to a torque of 48 ± 8 N·m (36 ± 6 lb ft) according to the tightening sequence in Illustration 13.

21. Rotate the wheel by 360 degrees. Check the bolts and tighten the bolts again, if necessary.

Show/hide table



Illustration 14	g00372737

22. Use Tooling (E) to measure the depth through the three small gauge holes of retainer (13). Average the three measurements and record the result.

23. Subtract the average thickness of the retainer (Step 15) from the average depth (Step 22). The difference is the gap between the end of the spindle and retainer (13) .

    Subtract 0.15 mm (0.006 inch) from the gap. The remainder is the required thickness of shims.

24. Use Tooling (G) to measure the shim pack. The thickness of the shim pack must be within 0.025 mm (0.001 inch) of the required thickness of shims.

25. Remove bolts (12) and retainer (13) .

Show/hide table



Illustration 15	g00370578

26. Install the required thickness of shim pack (14) .

Show/hide table



Illustration 16	g00370577

27. Install retainer (13) and bolts (12). The torque for bolts (12) is 475 ± 60 N·m (350 ± 45 lb ft).

Show/hide table



Illustration 17	g00370574

28. Install sleeve bearing (11) in planetary gear (9). The sleeve bearing is a slip fit to the planetary gear.

Show/hide table



Illustration 18	g00372834

29. Install thrust washer (10) in planetary carrier (3). Apply clean final drive oil to the contact surface of the thrust washer.

Show/hide table



Illustration 19	g00372836

30. Apply clean final drive oil to the contact surface of the planetary gear. Carefully install planetary gear (9) in the planetary carrier (3). The weight of the planetary gear is 61 kg (135 lb).

31. Apply clean final drive oil to the contact surface of thrust washer (8). Install the thrust washer.

Show/hide table



Illustration 20	g00370548

32. Install dowel (7) in planetary shaft (6) .

Show/hide table



Illustration 21	g00372837

33. Thoroughly apply clean final drive oil to planetary shaft (6) and to the sleeve bearing in planetary gear (9) .

34. Install planetary shaft (6) in planetary carrier (3). Align dowel (7) with the slot in planetary carrier (3) .

35. Repeat Steps 28 through 34 for the remaining two planetary gears.

Show/hide table



Illustration 22	g00370546

36. Install new O-ring seal (5) on planetary carrier (3). Apply clean final drive oil to the O-ring seal.

Show/hide table



Illustration 23	g00372932

37. Attach Tooling (A), a hoist and suitable lifting chains to planetary carrier (3), as shown. The weight of the planetary carrier is 475 kg (1050 lb).

38. Carefully lower planetary carrier (3) onto wheel (4). Align the "DRAIN" hole in the planetary carrier and the drain plug in the wheel.

Show/hide table



Illustration 24	g00370543

39. Install four bolts (1) that fasten the planetary carrier to the wheel. The torque for bolts (1) is 105 ± 20 N·m (78 ± 15 lb ft).

End By: Connect the final drive and the wheel to the service brake. Refer to Disassembly and Assembly, "Final Drive and Wheel to Service Brake - Connect".