TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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KNOWN INFO TEST OPTIONS 7. e139. MAIN WINCH LH OR RH SPEED SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL (CONT) TM 9-2320-366-20-2 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. STATION SELECTOR switch OK. MAIN WINCH LH SPEED switch OK. M1089 control panel power cable assembly OK. M1089 rear lights cable assembly. Auxiliary panel cable assembly OK. Dashboard cable assembly OK. POSSIBLE PROBLEMS 2-1450.8 Change 1 Is 24 VDC present at terminal block TB12? Voltage Test or STE/ICE-R Test #89 WARNING Read WARNING on following page. Replace M1089 30K winch wiring harness (para 7-142). REASON FOR QUESTION YES NO Replace MAIN WINCH RH SPEED switch (para 7-34) and M1089 control panel wiring harness (para 7-83). Faulty MAIN WINCH RH SPEED switch. Faulty M1089 control panel wiring harness. Faulty M1089 30K winch control wiring harness. If 24 VDC is not present, MAIN WINCH RH SPEED switch and M1089 control panel wiring harness is faulty. If 24 VDC is present, M1089 30K winch wiring harness is faulty.