TM 9-2320-209-20-3-1 5-4. EXHAUST SYSTEM (HORIZONTAL) REMOVAL AND REPLACEMENT (TRUCKS M50A1, M50A2, AND M50A3). TOOLS : 3/4-inch wrench (2) 6-inch extension 9/16-inch wrench (2) 10-inch extension (2) 1/2-inch wrench Universal 9/16-inch wrench 3/4-inch socket Hammer Rachet Chisel Cross-tip screwdriver (Phillips type) Rubber mallet Pliers SUPPLIES: Bypass valve gasket Front exhaust pipe gasket Exhaust pipe extension pipe gasket Exhaust manifold elbow gasket Fording valve top gasket (trucks M50A1 and M50A2) Fording valve bottom gasket (trucks M50A1 and M50A2) Extension bypass pipe gasket (truck M50A3) PERSONNEL : TWO EQUIPMENT CONDITION : Truck parked, engine off and cool, handbrake set. a. Preliminary Procedure. Remove air cleaner. Refer to para 4-3. WARNING Do not work on hot exhaust systems. Personnel can be badly burned. 5-17