TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
Page 630 of 1632
TEST OPTIONS REASON FOR QUESTION KNOWN INFO TM 9-2320-366-20-2 POSSIBLE PROBLEMS Faulty M1089 30K winch control wiring harness. Faulty 30K winch pneumatic manifold solenoid L17. Faulty wrecker air system. Continuity Test or STE/ICE-R Test #91 12. Replace M1089 winch control wiring harness (para 7-142). NO YES If continuity is not present, M1089 winch control wiring harness is faulty. If continuity is present, 30K winch pneumatic solenoid L17 is faulty. Is continuity present from terminal block TBC to wire C? 2-1456.18 Change 1 Replace 30K winch pneumatic manifold solenoid L17 (para 17-29). 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. Faulty 30K winch pneumatic manifold solenoid L19. MAIN WINCH RH FREESPOOL switch OK. M1089 control panel wiring harness OK. Faulty jumper wire.