TM 9-2320-361-20 3-31. MANIFOLD HEATER (UNCOVERED) REPLACEMENT This task covers: a. Fuel Nozzle Removal f. Elbow Installation b. Ignition Unit Removal g. Fuel Pump Installation c. Fuel Filter Removal h. Fuel Filter Installation d. Fuel Pump Removal i. Ignition Unit Installation e. Elbow Removal j. Fuel Nozzle Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM] All TM 9-2320-361-10 MATERIALS/PARTS TM 9-2320-361-20P Manifold heater fuel filter EQUIPMENT CONDITION Nine lockwashers Parking brake set (TM 9-2320-361-10). Two gaskets Hood raised and secured (TM 9-2320-361-10). Two filters Battery ground cable disconnected (para. 4-48). a. Fuel Nozzle Removal 1. Disconnect cable assembly (38) from spark plug (32). 2. Remove spark plug (32) and gasket (31) from elbow (25). Discard gasket (31). 3. Disconnect fuel return tube (7) and fuel inlet tube (10) from adapters (30) and (28). 4. Loosen nut (26) and remove fuel nozzle (27) and nut (26) from elbow (25). 5. Remove two filters (29) from fuel nozzle (27). Discard filters (29). b. Ignition Unit Removal 1. Remove cable assembly (38) from ignition unit (4). 2. Remove screw (1), lockwasher (2), and ground wire (41) from engine (40) and disconnect wiring harness (39) from ignition unit (4). Discard lockwasher (2). 3. Remove two screws (3), lockwashers (5), clamps (36), and ignition unit (4) from engine (40). Discard lockwashers (5). c. Fuel Filter Removal 1. Disconnect wire (11) from wire (12). 2. Remove wiring harness (21) from fuel pump (14). 3. Remove fuel return line (7) from tee (9). 4. Disconnect fuel supply line (35) from fuel filter (18). 5. Remove fuel filter (18), elbow (16), and pipe coupling (15) from fuel pump (14). Discard fuel filter (18). d. Fuel Pump Removal 1. Remove fuel inlet tube (10) and elbow (13) from fuel pump (14). 2. Remove two screws (6), lockwashers (8), clamps (20), and fuel pump (14) from water outlet manifold (19). Discard lockwashers (8). 3-66