PL61 Pipelayer Power Train Caterpillar

Disassembly Procedure

Start By:

1. Remove the track drive motor. Refer to Disassembly and Assembly, "Track Drive Motor - Remove".

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Illustration 1	g01291314

Note: Measure the Dimension (X) and the Dimension (Y). Record the measurement for assembly purposes.

1. Remove stops (1) and the O-ring seals on both sides of the track drive motor.
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   Illustration 2	g01291279

2. Remove bolts (2) and head (3).
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   Illustration 3	g01291282

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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.

3. Remove bolts (4) and valve assembly (5).
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   Illustration 4	g01291286

4. Remove O-ring seals (6).
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   Illustration 5	g01291284

5. Remove bushing (11), spring (8), retainer (9), spring (7), retainer (16), spring (15), dowel (10), piston (19), bushing (18), nut (20), solenoid (14), nut (13), pin (12), and O-ring seal (17).
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   Illustration 6	g01291287

6. Remove plug (23), plug (22), plug (25), and the O-ring seals.

7. Remove bolts (21) and valve (24).
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   Illustration 7	g01291288

8. Remove O-ring seals (26) and bolt (27).
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   Illustration 8	g01291283

9. Remove port plate (28).
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   Illustration 9	g01291289

10. Remove pin (29) and piston (30).
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    Illustration 10	g01291295

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    Illustration 11	g01291299

11. Remove O-ring seal (31) and barrel (32).

12. Remove spring (33) and shim (34).
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    Illustration 12	g01291301

13. Use Tooling (A) in order to remove retaining ring (35).
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    Illustration 13	g01291304

14. Remove rotating group (37) and lip seal (38).
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    Illustration 14	g01291307

15. Remove bolts (40), plate (42), pistons (39), and piston (41).
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    Illustration 15	g01291309

16. Use Tooling (C) in order to remove retaining ring (43).
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    Illustration 16	g01291311

17. Use Tooling (B) and a suitable press in order to remove shim (44), bearing cone (46), bearing cup (45), spacer (48), bearing cup (47), and bearing cup (49) from shaft (37).