TM 9-2320-209-20-3-1 4-26. MANIFOLD FLAME HEATER (TOP-MOUNTED, COVERED) FUEL PUMP AND IGNITION UNIT REMOVAL AND REPLACEMENT (TRUCKS WITH ENGINES LD 465-1, LD 465-lC , AND LDT 465-lC). TOOLS : 1/2-inch combination box and open end wrench 7/16-inch combination box and open end wrench 3/8-inch combination box and open end wrench 7/8-inch wrench Pliers SUPPLIES : None PERSONNEL: One EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Open hood. Refer to TM 9-2320-209-10. (2) Disconnect battery ground cable. Refer to para 7-58. 4-143