TM 9-2320-209-20-3-3 18-55. DISCHARGE VALVE CONTROL LEVERS REMOVAL AND REPLACEMENT (TRUCKS M50A1, M50A2, AND M50A3). TOOLS: 1/2-inch open end wrench 5/8-inch wrench 7/16-inch wrench (2) Pliers Leather gloves SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. WARNING Always wear protective gloves when handling cable. Do not let cable slip through hands. Rusty or broken wires can cause injury. a. Preliminary Procedure. Open rear compartment doors. b. Removal. FRAME 1 1. Using 1/2-inch open end wrench, unscrew two nuts (1) until two cables (2) are free. 2. Pull two cables (2) out of two bolts (3). GO TO FRAME 2 18-276