TM 9-2320-209-20-3-3 18-58. DELIVERY PUMP REMOVAL AND REPLACEMENT (TRUCKS AND M50A3). TOOLS: 3/4-inch wrench 9/16-inch socket M50A1, M50A2, 9/16-inch wrench 10-inch extension (socket set) Nose pliers Ratchet SUPPLIES: Delivery pump inlet gasket Delivery pump outlet gasket PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Removal. FRAME 1 1. 2. 3. GO Open rear compartment doors (1). Using pliers, take off connecting link clip (2). Take off link retainer (3), link (4), and sprocket chain (5). TO FRAME 2 18-314