TM 9-2320-209-20-3-3 18-37. FUEL DRAIN MANIFOLD REMOVAL AND REPLACEMENT (TRUCK M49A2C). TOOLS: 3/4-inch open end wrench (2) Hammer 7/8-inch open end wrench Wood chisel 9/16-inch open end wrench (2) Flat-tip screwdriver Stiff brush Scraper SUPPLIES: Gate valve gasket (2) Manifold gasket (2) Solvent, dry cleaning, type II (SD-2), Fed. Spec P-D-680 PERSONNEL: TWO 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. Preliminary Procedure. Drain fuel from truck. Refer to TM 9-2320-209-10. b. Removal. FRAME 1 1. Open truck rear compartment doors. 2. Using 3/4-inch wrenches, unscrew and take out four nuts (1) and bolts (2). Take off gravity delivery line gate valve (3). Take off gasket (4) and throw it away. GO TO FRAME 2 18-172