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 TM 9-2320-366-20-2 7. 2-1456.8 Change 1 POSSIBLE PROBLEMS Faulty M1089 30K winch control wiring harness. Faulty jumper wire. Faulty 30K winch pneumatic manifold solenoid L19. Faulty wrecker air system. 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. RH 30K winch freespools. MAIN WINCH RH FREESPOOL switch OK. 30K winch pneumatic manifold solenoid L17 OK. MAIN WINCH LH FREESPOOL switch OK. M1089 control panel wiring harness OK. e140. MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL (CONT)