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 TM 9-2320-364-34-1
20. HOIST DOES NOT RAISE (CONT).
5.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting
Flowmeter test.
on Page 2-669
tasks completed.
Hoist lowers.
REASON FOR QUESTION
Is an increase in flow
POSSIBLE PROBLEMS
If overload sensing system
measured at hydraulic
(OSS) directional valve or hoist
reservoir return filter when
relief valve is faulty, flow will
Four valve bank faulty.
return to tank before going to
HOIST control lever is in UP
hoist motor. If low or no flow
position?
was measure from HOIST valve,
and no flow is present on return
hose, HOIST valve is faulty.
Repair HOIST valve
(Para 16-33).
NO
Verify repair, go to
Step 7 of
this Fault.
YES
Replace OSS
directional valve in
four valve bank
(Para 16-26).
Go to Step 6 of this
Fault.
2-668
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