TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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TM 9-2320-366-20-1 1-14. ELECTRICAL SYSTEM (CONT) Figure 1-23. M1089 Underlift System j. M1089 Underlift. The electrical portion of the M1089 Underlift consists of a remote control box (1, Figure 1-23) and solenoids attached to the function valves in the WRECKER CONTROL PANEL (2). When the operator selects an underlift function from the remote control box, electrical current is sent to the solenoid which controls the selected function. The solenoid is energized and hydraulic pressure is supplied to the selected component(s). When the solenoid is de-energized, hydraulic pressure is removed and the selected function stops. 1-30