TM 9-2350-256-20-1
UNIT MAINTENANCE
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
NSN 2350-00-122-6826, EIC AQA
AUXILIARY HYDRAULIC SYSTEM TROUBLESHOOTING PROCEDURE
INITIAL SETUP:
Tools and Special Tools
Tool kit, general mechanic's (item 59, WP 0490 00)
Troubleshooting Procedure
Auxiliary Hydraulic System
Symptom
Auxiliary hydraulic system malfunctioning.
Malfunction
Main and hoist winches fail to operate.
Do step 1.
Insufficient or no auxiliary system oil pressure.
Do step 1.
Loss of auxiliary hydraulic pressure during operation. Do steps 2 and 3.
CORRECTIVE ACTION
1.
Check auxiliary power unit emergency winch control valve to see if it is in AUXILIARY POWER
UNIT OPERATION (open) position. If valve is not in correct position, place in open position.
WARNING
Do not attempt to loosen or tighten hydraulic fittings or lines when system is pressurized. Severe injury
or death to personnel may result.
2.
Inspect hydraulic lines and connections for damage and leaks. Tighten connections that leak. If leaks
persist, notify Direct Support Maintenance.
3.
Inspect hydraulic components (valves, pumps, cylinders, etc.) for leaks at gaskets and/or seals. Tighten
loose covers, plates, or housings. If leaks persist, notify Direct Support Maintenance.
END OF WORK PACKAGE
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