TM 9-2320-209-20-3-1 4-15. MANIFOLD HEATER (SIDE-MOUNTED) FUEL FILTER REMOVAL AND REPLACEMENT. TOOLS : Flat-tip screwdriver, stubby 9/16-inch combination box and open end box wrench 7/16-inch wrench 3/8-inch wrench l-gallon container SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. Preliminary Procedure. Open hood and right side panel. Refer to TM 9-2320-209-10. 4-77