TM 9-2320-279-34-3
Hydraulic System Maintenance Instructions (Cont)
20-10. RETRIEVER CONTROL VALVE REPAIR (M984E1) (CONT).
CAUTION
Relief valves are preset to
specific pressures. Correct
relief valve must be installed
in each valve body or
equipment may be damaged
when operating retriever
controls.
l
l
l
NOTE
Lift cylinder relief valves
are set to 400 psi (2758 kPa)
and 2500 psi (17237 kPa).
Tow cylinder relief valves
are set to 300 psi
(2068.5 kPa).
Relief valves are installed
the same way in all three
valve bodies.
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
Install Preformed packing (26), backup ring (27), and preformed packing (28) on relief valve (29).
Install relief valve (29) in valve body (12).
Install lockwashers (30) and
nuts (31) on three
studs (32).
Install three studs (32)
through end cover (33).
Install three shims (34) on
studs (32).
Install two preformed
packings (35), preformed
packing (36), and
preformed packing (37) on
valve body (12).
Assembly valve body (12)
and end cover (33).
Repeat steps (14) through
(16) for other two valve
bodies (12) and end
cover (38).
Install lockwashers (30) and
nuts (31) on studs (32).
d. Follow-on Maintenance. None.
END OF TASK
20-42
