TM-9-2320-366-34-1 MTV Direct Maintenance Manual M1083 Series - Volume 1 Download
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KNOWN INFO REASON FOR QUESTION YES NO TEST OPTIONS Repair or replace upper main valve assembly (para 16-83). 2. h7. M1089 LH 30K WINCH DOES NOT OPERATE (CONT) Pressure Test or STE/ICE-R Test #51 Hydraulic tank oil level OK. MAIN WINCH LH FREE SPOOL switch to OFF. MAIN WINCH LH FREE SPOOL switch OK. MAIN WINCH LH FREE SPOOL solenoid valve OK. RH 30K winch operates. Hydraulic tubes and fittings OK. LH and RH stifflegs OK. M1089 linear directional control valve OK. POSSIBLE PROBLEMS Faulty upper main valve assembly. Faulty LH 30K winch assembly. Faulty pressure relief valve assembly. Is pressure between 2,950-3,050 PSI (20,340-21,030 kPa) at output of upper main valve assembly? If pressure is not between 2,950-3,050 PSI (20,340-21,030 kPa), upper main valve assembly is faulty. TM 9-2320-366-34-1 2-1008.2 Change 1