D6G Track-Type Tractor Power Train Caterpillar

Removal Procedure

Start By:

1. Remove the final drive cases. Refer to Disassembly and Assembly, "Final Drive Case - Remove and Install".

Note: Check the condition of all seals and of all components. If any parts are worn or damaged, use new parts for replacement.

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Illustration 1	g00420202

1. Remove the plug from the final drive case with tool (A) .

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Illustration 2	g00420203

2. Remove dowel (1) from the final drive case with a 1/4 inch - 20 NC bolt.

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Illustration 3	g00420204

3. Remove the two bearings from the final drive case with tool (B) .

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Illustration 4	g00420205

4. Install one bolt that is for the final drive case in the steering clutch case, as shown.

5. Put a wire around the gear, the pinion and the bolt.

   Note: The wire will hold the gear and the pinion in position during removal of the gear and hub (2) .

6. Attach an appropriate lifting device and a hoist to the gear and hub (2) .

7. Remove the gear and hub (2) from the sprocket shaft. The weight of the gear and the hub is 113 kg (250 lb).

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Illustration 5	g00420206

8. Put the gear and the hub on wood blocks.

9. Remove the bearing from the gear and the hub with tool (C) .

10. Remove the eighteen bolts, locks and nuts from the gear and the hub.

11. Remove the gear from the hub.

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Illustration 6	g00420207

12. Remove bearing cup (3) .

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Illustration 7	g00420208

13. Remove the wire from the gear and pinion (4) .

14. Attach an appropriate lifting device and a hoist to the gear and pinion (4) .

15. Remove the gear and pinion (4) from the steering clutch case. The weight of the gear and pinion is 34 kg (75 lb).

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Illustration 8	g00420209

16. Put the gear and the pinion on wood blocks.

17. Remove bearing race (5) with tool (D) .

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Illustration 9	g00420210

18. Turn over the gear and the pinion.

19. Remove bearing race (6) with tool (E) .

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Illustration 10	g00420211

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NOTICE
Too much pressure on the pinion shaft can cause damage to the gear.

20. Use the following steps in order to remove the pinion shaft from the gear.

    1. Put the gear and the pinion shaft in a press, as shown.

    2. Put a small amount of pressure on the pinion shaft with a press.

    3. Push the ring in the groove on the pinion shaft with a hammer and a punch.

       Note: The ring will stay in the groove because of the pressure that is on the pinion shaft.

    4. The pinion shaft will slide out of the gear when the ring is completely in the groove.

21. Drain the oil from the bevel gear case and the steering clutch case.

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Illustration 11	g00420212

22. Install three 1/2 inch - 13 NC forcing screws in cage assembly (7) .

23. Tighten the screws evenly until the case assembly is loosened.

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Illustration 12	g00420213

24. Remove dowel (8) from the cage with a 1/4 inch - 20 NC bolt.

25. Remove seal (9) .

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Illustration 13	g00420214

26. Remove the bearing from the cage with tool (B) .

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Illustration 14	g00420216

27. Remove the outer bearing race from the pinion shaft with tool (F) .