TM 9-2320-361-10 2-31. OPERATION OF PIPELINE CONSTRUCTION MAINTENANCE TRUCKS (Contd) WARNING Wear hand protection when handling winch cable. Broken wires may cause injury to personnel. (11) Pull cable (20) from winch (refer to b. of this para.), run it under boom chain (15), under, over, and around tailboard sheave (6), and over and under A-frame sheave (13). (13) Turn side plates (19) and (22) back, screw in retaining pins (18) and (24), and tighten nuts (17) and (23). (14) Take up slack in cable (20) (refer to b. of this para.) and raise A-frame (25) to position. 2-157 NOTE Height of A-frame can be adjusted by making boom chains longer or shorter. Position A-frame at higher angles for heavier loads. (12) Hook end of cable (20) to lashjing hook (21).