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Page Title:
HOOK ARM DOES NOT UNLOAD. (Cont) |
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 TM 9-2320-364-34-1
4. HOOK ARM DOES NOT UNLOAD (CONT).
4.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting tasks
Operation test.
Does hook
on Page 2-293
completed.
arm unload
Hook arm loads.
REASON FOR QUESTION
with harness
DC valve OK.
connector disconnected from
If load control valve on port VB
safe lowering solenoid valve
side of LH or RH hook arm
POSSIBLE PROBLEMS
manifold is faulty, fluid cannot
on port VB side of RH hook
enter cylinder while unloading.
Load control valve faulty.
arm manifold and safe
Safe lowering solenoid valves at
lowering button pushed in?
port VB of LH and RH hook arm
manifolds only bypass load
control valves on port VB 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.
2-292
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