525D, 535D, 545D and 555D Wheel Skidders Power Train Caterpillar

Assembly Procedure

Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

Note: Apply oil to all the bearings before assembly.

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Illustration 1	g06236495

1. Use Tooling (B) and a suitable press to install bearing (38) in pump drive gear (40).
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   Illustration 2	g06236492

   Note: Apply Tooling (D) to the seal groove in stator carrier (37) before installing seal (39).

2. Install seal (39) on stator carrier (37).
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   Illustration 3	g06236496

3. Place the press supports underneath the inner race of bearing (38) to prevent damage to bearing (38)

4. Use Tooling (B) and a suitable press to install stator carrier (37) into bearing (38).

   Note: Before Installing stator carrier (37), ensure that Tooling (D) has retained seal (39) evenly in the seal groove. If seal (39) protrudes from the seal groove, damage may occur when stator carrier (37) is installed.

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   Illustration 4	g06236489
   Typical Example

5. Install pump drive gear (36) onto impeller (35).
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   Illustration 5	g06236595

6. Install retaining ring (34). Install impeller (35) onto pump drive gear (36) (not shown).
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   Illustration 6	g06236487

7. Install race (33) on impeller hub (32).
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   Illustration 7	g06236486

8. Install impeller hub (32) and bolts (30). Tighten bolts (30) in an alternating pattern to the following torque 60 ± 7 N·m (44 ± 5 lb ft). Install bearing (31).
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   Illustration 8	g06236484
   Typical Example

9. Use Tooling (B) and a suitable press to install cam (29) (not shown) in stator (21)
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   Illustration 9	g06236482
   Typical Example

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   Illustration 10	g06236557
   Typical Example

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   Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

10. Install race (26), freewheel springs (27), and freewheel rollers (28).

    Note: Be sure to install freewheel springs (27) with the lesser number of loops going toward race (26), as shown in Illustration 10.

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    Illustration 11	g06236556
    Typical Example

11. Install plate (25) and retaining ring (24) into stator (21).
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    Illustration 12	g06236555
    Typical Example

12. Turn the stator (21) over and install plate (23) and retaining ring (22).
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    Illustration 13	g06236478
    Typical Example

13. Install stator (22).
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    Illustration 14	g06236477

14. Install bearing (20) on turbine hub (19).
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    Illustration 15	g06236476
    Typical Example

15. Connect turbine (18) to turbine hub (19). Install two bolts (13) to keep turbine (18) and turbine hub (19) together during Step 16.
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    Illustration 16	g06236474
    Typical Example

16. Install turbine (18) and turbine hub (19) as one unit. Remove bolts (13).
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    Illustration 17	g06236472

17. Install backing plate (17) and bearing (16). Install spline plate (15).
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    Illustration 18	g06236471

18. Install clutch assembly (14). Remove spline plate (13). Install bolts (12). Tighten bolts (12) to a torque of 60 ± 7 N·m (44 ± 5 lb ft)
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    Illustration 19	g06236470

19. Install seals (11) onto piston (10).
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    Illustration 20	g06236469

20. Install piston (10).
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    Illustration 21	g06236468

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    Illustration 22	g06236463

21. Install sleeve bearing (9) into clutch housing (8).

22. Install clutch housing (8) onto torque converter.

23. Install bolts (7). Tighten bolts (7) to a torque of 60 ± 7 N·m (44 ± 5 lb ft).
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    Illustration 23	g06236462

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    Illustration 24	g06236461

24. Use Tooling (B) to install new lip seal (6). Lower the temperature of cups (5) and (4). Install cups (5) and (4). Install bearing (3).
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    Illustration 25	g06236592

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    Illustration 26	g06236459

25. Use Tooling (A) and a suitable lifting device to lower torque converter housing (1) onto the torque converter. Keep suitable tension on the lifting device to stabilize the torque converter and torque converter housing (1). Install bolts (2). Tighten bolts (2) to the following torque 55 ± 10 N·m (41 ± 7 lb ft).
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    Illustration 27	g06236457

26. Use Tooling (A), Tooling (C), and a suitable lifting device to place torque converter housing (1) on a clean, level work area. The weight of torque converter housing (1) is now approximately 305 kg (674 lb).

End By:

1. Connect the torque converter to the transmission.