AP1055F Asphalt Paver Machine Systems Caterpillar

Disassembly Procedure

Start By:

1. Remove the piston pump (auxiliary).

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Illustration 1	g03722837

1. Remove bolts (2) and head (1) from housing (3).
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   Illustration 2	g03722844

2. Remove piston kit (4) from head (1).

3. Remove O-ring seal (5) and O-ring seal (9) from head (1).

4. Remove port plate (8) from head (1).

5. Remove bearing cup (10) from head (1).

6. Remove bolts (7) and control valve (6) from head (1).
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   Illustration 3	g03723103

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   Illustration 4	g03723113

7. Remove O-ring seals (11) from control valve (6).

8. Remove nut (18), coil (17), and valve (16) from control valve (6).

9. Remove backup ring (12), O-ring seal (13), backup ring (14), and O-ring seal (15) from valve (16).
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   Illustration 5	g03722859

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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. Remove plug assembly (19), O-ring seal (20), and O-ring seal (21) from control valve (6).

11. Remove springs (22) and (23), poppet (24), and plug assembly (25) from control valve (6).

12. Remove plug assembly (26), plug assembly (28), and spool (27) from control valve (6).

13. Remove plug assembly (29), O-ring seal (30), spring (31), spring (32), and poppet (33) from control valve (6).

14. Remove plug assemblies (34), (35), and (36) from control valve (6).

15. Remove plug assembly (38) and spool (37) from control valve (6).
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    Illustration 6	g03723251

16. Remove bearing cone (39) and O-ring seal (40) from housing (3).
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    Illustration 7	g03723254

17. Remove barrel assembly (41) from housing (3).
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    Illustration 8	g03723269

18. Remove pistons (42) and plate (43) from barrel (44).
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    Illustration 9	g03723278

19. Remove pistons (42) from plate (43).
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    Illustration 10	g03723275

20. Remove retainer (45) from barrel (44).
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    Illustration 11	g03723296

21. Remove pins (46) from barrel (44).
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    Illustration 12	g03723310

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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.

22. Use Tooling (A) and a suitable press to remove retaining ring (47) from barrel (44).
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    Illustration 13	g03723328

23. Remove retaining ring (47), washer (48), spring (49), and washer (50) from the barrel.
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    Illustration 14	g03723324

24. Remove shaft (53), swashplate (52) and spring (51) from housing (3).
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    Illustration 15	g03723369

25. Remove bearings (54) and bearing cone (55) from housing (3).
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    Illustration 16	g03723379

26. Remove retaining ring (57) and lip seal (56) from housing (3).

27. Use Tooling (A) to remove bearing cup (58) from housing (3).