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Steering Control Valve Service
3
5
6
9
10
16
11
12
13
14
15
4
7
1
2
17
18
19
19
20
21
22
23
24
8
140 to 160 in–lb
(15.8 to 18.1 N–m)
150 in–lb
(17 N–m)
Figure 48
1. Steering valve housing
9. Cap screw (7 used)
17. Geroter drive
2. Dust seal
10. End cap
18. Wear plate
3. O–ring
11. O–ring
19. Bearing race
4. Spool
12. Seal ring
20. Thrust bearing
5. Spring retaining ring
13. O–ring
21. Plug
6. Pin
14. Geroter
22. O–ring
7. Sleeve
15. O–ring
23. Check ball
8. Centering springs/spacers
16. Spacer
24. Quad seal
Disassembly
4. Slide the spool and sleeve assembly from the hous-
ing.
NOTE: Cleanliness is extremely important when
repairing hydraulic components. Work in a clean area.
5. Remove the thrust bearing and bearing races (2).
Before disassembly, drain the oil, then plug the ports
and thoroughly clean the exterior. During repairs,
6. Remove the quad seal.
always protect machined surfaces.
7. Use a small blade screwdriver to carefully pry the
1. Remove the seven cap screws from the steering
dust seal from the housing. Be careful to not damage the
valve assembly.
dust seal seat in the housing.
2. Remove end cap, geroter, spacer, geroter drive,
8. Remove the pin (Item 6) that holds the spool and
wear plate, seal ring, and o–rings (Items 11, 13, and 15)
sleeve together.
from housing (Fig. 48).
9. Carefully slide the spool out of the sleeve. The cen-
3. Remove the plug, o–ring, and check ball from the
tering springs and spring retaining ring will stay with the
housing.
spool as it is removed.
Hydraulic System Page 4 – 50 Multi Pro 5700–D