Disassembly

1. Remove steering gear from vehicle.

Fig. 1 Exploded View Of Valve Body Unit:

2. Remove two control valve body to steering gear flange bolts, Fig. 1.
3. Remove O-rings and port orifices from gearbox.
4. Remove two valve body cap to valve body attaching bolts.
5. Remove cap seal from valve body cap.
6. Remove cutoff valve and spring from valve body.
7. Check cutoff valve surface for any scoring or scratches, then slip it back into the valve body and ensure it slides smoothly without any drag or play. If any part of the valve body is damaged, replace the valve body unit as an assembly.
8. Separate valve body and port housing, then remove seals and dowel pins from port housing.
9. Remove pinion dust seal and O-ring from port housing.
10. Remove rollers from control valve by pushing valve out one side of valve body, then the other. When removing rollers, hold plungers with your fingers to keep them from popping out.
11. Remove plungers, return springs and 4-way control valve from valve body.
12. Remove O-ring from 4-way control valve.
13. Check plungers for any scoring or scratches, then slip each plunger into valve body and ensure it slides smoothly, without drag or side play.
14. Check 4-way control valve for any scoring or scratches, then slip each 4-way control valve into the valve body and ensure it slides smoothly, without drag or side play.