583R Pipelayer Machine Systems Caterpillar

Disassembly Procedure

Start By:

1. Remove the winch control valve.

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NOTICE
Clean the control valve before disassembly. Disassemble the control valve on a clean surface. Keep all of the parts clean in order to prevent damage to the components on the control valve.

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NOTICE
Put identification marks on all of the components of the control valve as each one is removed. All of the parts must be reinstalled in the original location. Do not damage any of the internal parts during removal. A damaged valve component will result in oil leakage and affect valve performance.

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Illustration 1	g00502491

1. Remove three bolts (1) and remove control valve lever assembly (2) from the winch control valve.

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Illustration 2	g00502493

2. Remove end (5) from each of the two valve spools.

3. Remove two bolts (4) and remove housing (3) from the winch control valve. Remove the two O-ring seals that are located between housing (3) and the winch control valve.

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Illustration 3	g00502494

4. Remove stop (6), shims (7), spring (8) and valve (9) from valve body (10). Keep shims (7) with valve (9) .

5. Remove the O-ring seal from stop (6) .

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Illustration 4	g00502496

6. Remove stop (11), spring (12), shims (13) and valve (14) from valve body (10). Keep shims (13) with valve (14) .

7. Remove O-ring seal (15) from stop (11) .

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Illustration 5	g00502501

8. Remove plug (19) and springs (17) and (18) from valve body (10). Remove O-ring seal (16) from plug (19) .

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Illustration 6	g00502502

9. Remove plug (20) and piston (21) from valve body (10). Remove O-ring seal (22) from plug (20) .

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Illustration 7	g00502505

10. Remove tube assembly (23) .

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Illustration 8	g00502506

11. Remove cover (24) from valve body (10) .

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Illustration 9	g00502507

12. Remove O-ring seals (25) from cover (24) .

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Illustration 10	g00502508

13. Put identification for the location of each valve spool in valve body (10). Remove direction control valve spool (26) and speed control valve spool (27) from valve body (10) .

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Illustration 11	g00502510

14. Remove bolt (28), washer (29), stop (30), spring (31) and stop (32) from valve spool (26) in order to remove the spring centering mechanism.

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Illustration 12	g00502511

15. Remove bolt (33), washer (34), stop (35), spring (36) and stop (37) from valve spool (27) in order to remove the spring centering mechanism.

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Illustration 13	g00502512

16. Remove relief valve (38) from valve body (10) .

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Illustration 14	g00502513

17. Remove O-ring seal (39) from relief valve (38) .

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Illustration 15	g00502514

18. Use Tool (A) to remove snap ring (40). Remove stop (41), spring (42), shims (43) and valve (44) from relief valve (38). Keep shims (43) with valve (44) .

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Illustration 16	g00502516

19. Remove stop (45), spring (46) and valve (47) from valve body (10). Remove O-ring seal (48) from stop (45) .

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Illustration 17	g00502517

20. Remove stop (49), spring (50) and valve (51) from valve body (10). Remove O-ring seal (52) from stop (49) .

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Illustration 18	g00502518

21. Remove check valve (53) from valve body (10) .

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Illustration 19	g00502519

22. Remove O-ring seal (54) from check valve (53) .

23. Drive pin (55) from check valve (53). Remove the ball check valve.

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Illustration 20	g00502520

24. Remove lip seals (56) from valve body (10) .