TM 9-2320-209-10-1 d. Front Winch Controls and Indicators. 1. Front winch drum lock knob. Is 2. Front winch CLUTCH control lever. used to lock drum when winch is Is moved to IN position (toward right not in use. When knob is pulled side of truck) to put winch into gear out and up drum is unlocked. and to OUT position (left side of truck) to take it out of gear. 4-9