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 TM 9-2320-364-34-1
3. HOOK ARM DOES NOT LOAD (CONT).
5.
TEST OPTIONS
KNOWN INFO
Operation test.
Unit Troubleshooting tasks
Does hook arm load with
completed.
harness connector
REASON FOR QUESTION
Hook arm unloads.
disconnected from safe
DC valve OK.
If load control valve on port VA
LH and RH hook arm cylinders
lowering solenoid valve on
side of LH or RH hook arm
OK.
port VA side of RH hook arm
manifold is faulty, fluid cannot
manifold and safe lowering
enter cylinder while loading.
POSSIBLE PROBLEMS
Safe lowering solenoid valves on
button pushed in?
port VA side of LH and RH hook
Load control valve faulty.
arm manifolds only bypass load
control valves on port VA side.
Repair RH hook
arm manifold
(Para 17-13).
NO
Verify repair,
go to Step 8
of this Fault.
YES
Repair LH hook
arm manifold
(Para 17-13).
Verify repair, go to
Step 8 of this Fault.
2-278
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