320D2 GC Excavator Machine Systems Auxiliary Pilot Valve (Straight Travel) - Disassemble Caterpillar


Auxiliary Pilot Valve (Straight Travel) - Disassemble
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1.1. Disassembly Procedure

Disassembly Procedure

Start By:

  1. Remove the auxiliary pilot control valve.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will prevent dirt from entering the internal mechanism.

    Note: During the disassembly of the auxiliary pilot control valve, put identification marks on each component for assembly purposes.



    Illustration 1g00710913

  1. Remove bellows (1) from the pilot valve.


    Illustration 2g00710915

  2. Remove setscrew (2) from the pedal.


    Illustration 3g00710917

  3. Remove camshaft (4).

  4. Remove pedal (3).


    Illustration 4g00710918

  5. Remove bolts (5) from valve block (6).

  6. Remove valve block (6).


    Illustration 5g00710920

  7. Remove plug (7) from the valve block.


    Illustration 6g00710930

  8. Remove O-ring seal (8) from plug (7).


    Illustration 7g00710935

  9. Remove O-ring seal (9) from the valve body.

  10. Remove O-ring seal (10) from the valve body.

  11. Remove O-ring seal (11) from the valve body.


    Illustration 8g00710937

  12. Remove bolts (12).

  13. Remove cover (13).


    Illustration 9g00710962

  14. Remove bushings (14) from the cover.


    Illustration 10g00710971

  15. Remove caps (15) and the pushrods from the valve body.


    Illustration 11g00710976

  16. Remove pushrod (16) from cap (15).


    Illustration 12g00710980

  17. Remove O-ring seal (18) from cap (15).

  18. Remove packing (17) from cap (15).


    Illustration 13g00710984

  19. Remove spool assemblies (19) from the valve body.

  20. Use the following procedure to disassemble spool assemblies (19).


      Illustration 14g00710990

    1. Remove seat (24) from spool (20).

    2. Remove spring (23), washer (22) and washer (21) from spool (20).


    Illustration 15g00711540

  21. Remove springs (25) from the valve body.


    Illustration 16g00710996

  22. Remove plug (26) from the valve body.


    Illustration 17g00710999

  23. Remove O-ring seal (27) from plug (26).

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