TM9-2320-361-10 2-31. OPERATION OF PIPELINE CONSTRUCTION MAINTENANCE TRUCKS (Contd) (4) Unhook safety pins (4), remove tee locking pins (2), and remove stiff leg jacks (3) from both sides of truck. (5) Adjust lower leg (7) in upper leg (6) until lower leg (7) is set firmly on ground. Install tee locking pin (2) through leg (7) and secure with safety pin (4). (6) Pull out drum lock knob (5) and rotate it 90° to unlocked position. (7) Place winch clutch lever (1) in off position (toward center of truck). WARNING Wear hand protection when handling winch cable. Broken wires may cause injury to personnel. NOTE Do not kink winch cable. (8) Fasten winch cable (12) to load. (9) Turn adjusting screw (13) right, as necessary, to tighten drag brake and maintain cable tension. 2-148