TM 9-2320-209-20-3-3 18-33. CENTRIFUGAL PUMP REMOVAL AND REPLACEMENT (TRUCKS M49A1C AND M49A2C). TOOLS: 9/16-inch wrench (2) 3/4-inch wrench 3/16-inch sockethead screw key (Allen wrencher equivalent) Mallet Flat-tip screwdriver SUPPLIES: Elbow inlet tube gasket Outlet tube gasket 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. a. Removal. FRAME 1 1. Open fuel truck rear compartment doors. 2. Using allen wrench, loosen setscrew (1) in yoke (2). GO TO FRAME 2 18-138