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Disassembly
1. Thoroughly clean the exterior of the valve.
Place the valve in a clean work area for disas-
sembly.
2. Remove machine screw (15, Figure 8-12) seal
plate (16), wiper (13) and O-ring (12).
3. Remove snap ring (1, figure 8-12), cap screws
(6), cap (24), spacer (23), and detent sleeve
(22). Detent Balls (2) and (21) will fall free when
the cap and detent sleeve are removed. Sepa-
rate cap (24), spacer (23) and detent sleeve
(22), as this will be necessary for reassembly.
4. Carefully slide the spool (14) out of the spool
housing (17). Remove seal retainer (25), wiper
(26) and O-ring (27) from spool (14).
5. Insert a rod in the cross holes of the detent pin
(3) and unscrew from spool (14). Slight pres-
sure should be exerted against the detent pin
as it disengages and spring tension is released.
6. Remove spring seats (19), spring (4) and
spacer (5).
L08038
1. Snap Ring
2. Ball (4)
3. Detent Pin
4. Spring
5. Spacer
6. Cap Screw
7. Outlet Housing
8. Nut
9. Tie Rod
10. Nut
11. O-Ring
12. O-Ring
13. Wiper
14. Spool
Hoist Circuit Component Repair
FIGURE 8-12. HOIST PILOT VALVE
15. Machine Screw
16. Seal Plate
17. Spool Housing
18. Inlet Housing
19. Spring Seat
20. Spring
21. Ball (1)
22. Detent Sleeve
23. Spacer
24. Cap
25. Seal Retainer
26. Wiper
27. O-Ring
L8-11
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