854G Wheel Dozer Machine Systems Caterpillar

Assembly Procedure

Note: Thoroughly clean all parts prior to assembly. Inspect all parts. If any parts are damaged, use new parts for replacement. Put clean hydraulic oil on all internal parts during assembly.

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Illustration 1	g00403584

1. Install the O-ring seal on plug (57). Install ball (55), seat (56) and plug (57) in the main control valve.
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   Illustration 2	g00403583

2. Install the O-ring seal on plug (54). Install spring (52), valve stem (53) and plug (54) in the main control valve.
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   Illustration 3	g00403582

3. Install the O-ring seal on plug (51). Install valve (49), spring (50) and plug (51) on the main control valve.
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   Illustration 4	g00403581

4. Install the O-ring seals on seat (43), on cover (47) and on plug (48).

5. Install valve (44), spring (45), shims (46) and plug (48) in cover (47).

6. Install valve spool (41), spring (42), seat (43) and cover (47) in the main control valve.
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   Illustration 5	g00403580

7. Install the O-ring seals on cover (38) and on fitting (37). Install fitting (37) on cover (38).

8. Install retainer (40), spring (39) and cover (38) in the main control valve.
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   Illustration 6	g00403579

9. Install the O-ring seals on cover (35) and on fitting (36). Install fitting (36) on cover (35).

10. Install valve stem (32), retainer (33), spring (34) and cover (35) in the main control valve.
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    Illustration 7	g00403578

11. Install the O-ring seal on cover (28). Install valve (29), spring (30), the shims and plug (31) in cover (28).

12. Install valve spool (24), spring (25), O-ring seal (26), seat (27) and cover (28) in the main control valve.
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    Illustration 8	g00403426

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    Illustration 9	g00403427

13. Install O-ring seal (21) on plug (20). Install valve (23), spring (22) and plug (20) in the main control valve.
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    Illustration 10	g00403298

14. Install washer (15), retainer (16), spring (17) and retainer (18) on bolt (19).

15. Put 9S-3263 Thread Lock Compound on the threads of bolt (19). Install bolt (19) on valve stem (14).
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    Illustration 11	g00403277

16. Install valve stem (14) in the main control valve.
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    Illustration 12	g00403276

17. Install the O-ring seal on each plug (10). Install ball (13), seat (12), spring (11) and plug (10) on each side of housing (9).
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    Illustration 13	g00403275

18. Install housing (9) on the main control valve.
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    Illustration 14	g00403265

19. Use a press and Tooling (A) to install bearing (8) in lever housing (1). Make sure that the side of the bearing with the cover is facing outward.
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    Illustration 15	g00403263

20. Use a press and Tooling (A) to install bearing (7) in lever housing (1).

21. Use a press and Tooling (A) to install seal (6) on lever housing (1). Make sure that the sealing lip is facing toward the inside of the lever housing. Put clean hydraulic oil on the sealing lip.
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    Illustration 16	g00403261

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    Illustration 17	g00403262

22. Install the keys on shaft (5). Install lever (3) on shaft (5).

23. Put lever (4) in position in the lever housing. Slide shaft (5) and lever (3) in position. Tighten the bolt that holds lever (4) to the shaft.
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    Illustration 18	g00403259

24. Install the O-ring seal, the gasket and cover (2) on lever housing (1).
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    Illustration 19	g00403258

25. Install lever housing (1) on the main control valve. Make sure that lever (4) engages with valve stem (14) so that lever (3) is positioned toward the main control valve, as shown.

End By:

1. Install the main control valve. Refer to Disassembly and Assembly, "Main Control Valve - Install".