Service Manual

Rev. A
Groundsmaster 7200/7210Hydraulic System Page 4 - 86
Manual Lift Control Valve Service (Serial Number Below 313000000)
1. Detent ball
2. Spring
3. Gasket
4. O- ring
5. Screw
6. Washer
7. Screw and lock washer (2 used)
8. Spool
9. Plug
10. Poppet stop
11. Poppet
12. End cap
13. Spacer
14. Adapter plug
15. O- ring
16. Detent plug
17. Spring
18. O- ring
19. Detent plunger
20. Spring
21. O- ring
22. Lockout seat
23. O- ring
Figure 101
10
12
13
14
11
8
9
7
6
4
2
1
3
5
4
15
16
17
18
19
20
22
23
21
23
22
35 to 40 ft- lb
(47to54N-m)
24 to 36 in- lb
(2.7 to 4.1 N- m)
18 to 20 ft- lb
(24to27N-m)
35 to 40 ft- lb
(47to54N-m)
10 to 15 ft- lb
(14to20N-m)
Loctite #242
Loctite #242
18 to 20 ft- lb
(24to27N-m)
Loctite #242
Disassembly (Fig. 101)
1. Plug all ports and clean the outside of control valve
thoroughly.
2. Remove two (2) screws with lock washers (item 7)
that secure end cap (item 12) to control valve. Remove
end cap.
3. Retain spool to prevent it f rom turning. Remove
screw (item 5), spacer (item 13), spring (item 20) and
washer (item 6) from control valve.
4. Carefully slide spool (item 8) from housing bore.
5. Carefully remove O- rings (item 4) from spool bore.
Take care to not damage spool bore or O- ring cavities
during O- ring removal.
6. Remove detent plug (item 16), O- ring (item 18),
spring (item 17) and detent ball (item 1).
7. Remove plug (item 9) with O- ring (item 21) and lock-
out seat (item 22) with O- ring (item 23) from valve body.
8. Remove adapter plug (item 14) with O- ring (item
15), poppet stop ( item 10), spring (item 2) and poppet
(item 11) from control valve body.