TM 9-2320-209-20-3-1 4-16. MANIFOLD HEATER (SIDE-MOUNTED) SPARK PLUG AND NOZZLE REMOVAL AND REPLACEMENT. TOOLS : 5/16-inch wrench (2) 7/8-inch wrench 7/16-inch wrench (2) 13/16-inch wrench 3/4-inch wrench SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Open hood and right side panel. Refer to TM 9-2320-209-10. (2) Disconnect battery ground cable. Refer to para 7-58. b. Removal. FRAME 1 1. Using 3/4-inch wrench, unscrew and take off electrical cable connector (1) from sparkplug (2). 2. Using 7/8-inch wrench, unscrew and takeoff sparkplug (2) with gasket (3). 3. Using 7/16-inch wrenches, unscrew and take off fuel return tube fitting (4). 4. Using 5/16-inch wrenches, unscrew and take off fuel inlet tube fitting (5). 5. Using 7/16-inch wrench, unscrew and takeoff elbow (6). 6. Using 13/16-inch wrench, unscrew and takeoff nozzle (7). END OF TASK TA 083327 4-86