TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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TEST OPTIONS REASON FOR QUESTION YES NO Is continuity present between terminal blocks TBC(1), TBC(2), TBC(3), TBC(4) and TBC(5)? Replace jumper wire between terminal blocks that continuity is not present (para 7-33). If continuity is not present, jumper wire is faulty. Continuity Test or STE/ICE-R Test #91 KNOWN INFO 3. TM 9-2320-366-20-2 2-1456 Change 1 POSSIBLE PROBLEMS e140. MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL (CONT) LH and RH winches operate from wrecker control panel. Circuit breaker CB50 OK. STATION SELECTOR switch to WRECKER CONTROL PANEL. MODE SELECTOR SWITCH to NORMAL. MAIN WINCH LH and RH SPEED switches operate. LH 30K winch freespools. MAIN WINCH LH FREESPOOL switch OK. 30K winch pneumatic manifold solenoid L19 OK. MAIN WINCH RH FREESPOOL switch OK. M1089 control panel wiring harness OK. Faulty M1089 30K winch control wiring harness. Faulty jumper wire. Faulty 30K winch pneumatic manifold solenoid L17. Faulty wrecker air system.