This task covers:
Tools and Special Tools:
Pan, Drain, 4-Gallon (MIL-P-45189)
Socket Set, 1/2-In. Deep (GGG-W-641)
Tool Kit, General Mechanic's: Automotive
Wrench, Open-end, 26 mm (B107.9)
Wheels chocked (TM 9-2320-279-10)
Wrench Set, Socket (51200017510)
Engine turned off (TM 9-2320-279-10)
Wrench, Torque 15-75 ft-lb (GGG-W-00686)
Place drain pan under relief valves to catch excess oil.
There are two relief valves. Both valves are removed the same way.
(1) Open hydraulic cabinet cover (1).
(2) Remove winch relief valve (2) from main manifold block (3).
(3) Remove and discard two backup rings (4), o-ring (5) and o-ring (6) from winch relief valve (2).
Coat O-rings and backup rings with lubricating oil prior to installation.
(1) Install new o-ring (6), o-ring (5) and two backup rings (4) on winch relief valve (2).