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Page Title:
HOOK ARM DOES NOT UNLOAD. (Cont) |
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 TM 9-2320-364-34-1
NOTE
Ensure manual push button is pushed past
free play to engage.
Only remove center screw on engine side
of LHS control box cover.
OPERATION TEST
(1) Remove four screws, lockwashers and
LHS control box cover. Discard
(2) Start engine (TM 9-2320-364-10).
(3) Set hydraulic selector switch to
MAN HA.
(4) Push in free flow valve manual push
button while pushing in DC valve
hook arm unload manual push
button.
(a) If hook arm does not unload,
DC valve is OK. Perform
Steps (5) and (6) below and go to
Step 2 of this Fault.
(b) If hook arm unloads, perform
Steps (5) and (6) below and
replace upper DC valve
(Para 17-10).
(5) Set hydraulic selector switch to OFF
position.
(6) Turn OFF ENGINE switch.
2-287
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