TM 9-2320-209-20-3-3 18-32. DISCHARGE VALVE OPERATING LEVER REMOVAL AND REPLACEMENT. NOTE Truck M49A1C has three discharge valve operating levers. Truck M49A2C has two discharge valve operating levers. This task is the same for both trucks, but details are shown for truck M49A1C. TOOLS: 3/4-inch open end wrench 1/2-inch open end wrench 7/16-inch open end wrench (2) Pliers Leather gloves SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. WARNING Smoking, sparks, or open flame are not allowed within 50 feet of fuel truck during this task. Fuel may burn, causing explosion, injury to personnel, and damage to equipment. Always wear protective gloves when handling cable. Do not let cable slip through hands. Rusty or broken wires can cause injury. a. Removal. FRAME 1 1. Open truck rear compartment doors. 2. Using 1/2-inch wrench, unscrew and take off four nuts (1). Take four cables (2) out of four special bolts (3). GO TO FRAME 2 18-134