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Page Title:
M1089 LH 30K WINCH DOES NOT OPERATE (CONT) |
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 TM 9-2320-366-20-3
w4. M1089 LH 30K WINCH DOES NOT OPERATE (CONT)
KNOWN INFO
TEST OPTIONS
2.
Hydraulic tank oil level OK.
Operational Test
MAIN WINCH LH FREESPOOL
Do LH and RH stifflegs
REASON FOR QUESTION
switch to OFF.
operate?
MAIN WINCH LH FREESPOOL
This question eliminates
switch OK.
possible problems and
Hydraulic tubes and fittings
determines where to continue
OK.
troubleshooting.
POSSIBLE PROBLEMS
Faulty upper main valve
NO
assembly.
Faulty pressure relief valve
assembly.
Faulty LH 30K winch
Perform Wrecker Hydraulic System
assembly.
Troubleshooting task w2. M1089
YES
STIFFLEGS/ LEFT 30K WINCH/ 15K
SRW DO NOT OPERATE.
Notify DS Maintenance.
Change 2
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