TM 5-5420-234-14&P
This task covers:
a.
Removal
b. Installation
c.
Follow-on Maintenance
INITIAL SETUP
Tools and Special Tools:
Materials/Parts:
Pan, Drain, 4-Gallon (MIL-P-45819)
Tool Kit, General Mechanic's: Automotive
(SC 5180-90-N26)
Wrench, Combination, 1 3/8 in. (1244)
Equipment Condition:
Wrench Set, Socket, 3/4-In. Drive (FEDSTD353)
Wrench, Torque, 50-250 ft-lb (STW-3RCF)
a. Removal.
(1) Open hydraulic cabinet cover (1).
NOTE
Place drain pan under relief valve to catch excess oil.
(2) Remove relief valve (2) from main manifold block (3).
(3) Remove and discard two backup rings (4) and o-ring (5) from relief valve (2).
(4) Remove and discard two backup rings (6) and o-ring (7) from relief valve (2).
(5) Remove and discard o-ring (8) from relief valve (2).
b. Installation.
NOTE
Coat new O-rings and backup rings with lubricating oil prior to installation.
(1) Install new o-ring (8) on relief valve (2).
(2) Install new o-ring (7) and two backup rings (6) on relief valve (2).