AP1055F Asphalt Paver Machine Systems Caterpillar

Assembly Procedure

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Illustration 1	g03723379

1. Use Tooling (A) to install bearing cup (58) into housing (3).

2. Install lip seal (56) and retaining ring (57) into housing (3).
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   Illustration 2	g03723369

3. Install bearing cone (55) and bearing (54) into housing (3).
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   Illustration 3	g03723644

4. Install spring (51) and swashplate (52) into housing (3).
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   Illustration 4	g03723663

5. Install shaft (53) into housing (3).
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   Illustration 5	g03723328

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   Illustration 6	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.

6. Install washer (50), spring (49), and washer (48) into barrel (44).

7. Use Tooling (A) and a suitable press to install retaining ring (47) into barrel (44).
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   Illustration 7	g03723296

8. Install pins (46) into barrel (44).
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   Illustration 8	g03723275

9. Install retainer (45) onto barrel (44).
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   Illustration 9	g03723278

10. Install pistons (42) into plate (43).
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    Illustration 10	g03723269

11. Install plate (43) and pistons (42) into barrel (44).
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    Illustration 11	g03723254

12. Install barrel assembly (41) into housing (3).
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    Illustration 12	g03723251

13. Install O-ring seal (40) and bearing cone (39) into housing (3).
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    Illustration 13	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.

14. Install spool (37) and plug assembly (38) into control valve (6).

15. Install plug assemblies (36), (35), and (34) into control valve (6).

16. Install poppet (33), spring (32), spring (31), O-ring seal (30), and plug assembly (29) into control valve (6).

17. Install spool (27), plug assembly (28), and plug assembly (26) into control valve (6).

18. Install plug assembly (25), poppet (24), and springs (23) and (22) into control valve (6).

19. Install O-ring seal (21), O-ring seal (20), and plug assembly (19).
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    Illustration 14	g03723113

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    Illustration 15	g03723103

20. Install O-ring seal (15), backup ring (14), O-ring seal (13), and backup ring (12) onto valve (16).

21. Install valve (16), coil (17), and nut (18) onto control valve (6).

22. Install O-ring seals (11) onto control valve (6).
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    Illustration 16	g03722844

23. Install control valve (6) and bolts (7) onto head (1).

24. install bearing cup (10) onto head (1).

25. Install port plate (8) onto head (1).

26. Install O-ring seal (9) and O-ring seal (5) onto head (1).

27. Install piston kit (4) onto head (1).
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    Illustration 17	g03722837

28. Install head (1) and bolts (2) onto housing (3).

End By:

1. Install the piston pump (auxiliary).