Hydraulic System Maintenance Instructions (Cont)
Remove two screws (10) and bracket (11).
Detent balls are spring loaded. Do not pull on detent sleeve when removing spool
assembly. Detent balls can be lost if detent sleeve pulled off spool.
Remove spool assembly (12) from valve housing (9).
Remove washer (13) and retaining plate (14) from spool assembly (12).
Remove washer (15) and two seals (16) from valve housing (9).
Remove detent sleeve (17), two
detent balls (18), and spring (19).
Remove detent adapter (20) and
washer (21) from spool assembly (12).
Adhesives, solvents, and sealing compounds can burn easily, can give off harmful
vapors, and are harmful to skin and clothing. To avoid injury or death, keep away
from open fire and use in well-ventilated area. If adhesive, solvent, or sealing
compound gets on skin or clothing, wash immediately with soap and water.
Clean all parts with dry cleaning solvent.
Thoroughly lubricate relief valve after cleaning.
Inspect threads for damage. Repair damaged threads.
Inspect spool and bore of valve housing for cracks and scoring. If valve housing or spool is
cracked, or if there are deep scoring marks on spool or in valve housing bore, replace control
Inspect end cap and retaining plate for bends and breaks. If retaining plate or end cap is bent or
broken, replace cap assembly.
If detent does not work smoothly, if detent balls are lost, or if detent spring is broken, replace