Hydraulic System Maintenance instructions (Cont)
20-3. WINCH/AUXILIARY HYDRAULIC RELIEF VALVE REPAIR (M983, M984) (CONT).
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 metal parts in dry cleaning solvent.
Inspect all parts for damage.
Replace damaged parts.
Relief valve for M983 vehicle is preset for 3000 psi (20 685 kPa). Relief valve for M984 vehicle is
preset for 2500 psi (17 238 kPa). Do not mix plugs on valves.
Install-setscrew (1), lockscrew (2), and plug (3) in spring retaining plug (4).
Install valve seat (5) in relief valve body (6).
Coat preformed packing (7) with oil and install packing retainer (8) and preformed packing on
Coat preformed packing (10) with oil and install on spring retaining plug (4).
Install poppet (9), spring (11), spring end (12), and spring retaining plug (4) in relief valve
d. Follow-on Maintenance. None.
END OF TASK