TM 9-2320-361-20 3-27. FUEL RETURN TEES AND TUBES REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS All REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Hood raised and secured (TM 9-2320-361-10). Battery ground cable disconnected (para. 4-48). GENERAL SAFETY INSTRUCTIONS Diesel fuel is flammable. Do not perform this task near open flames. WARNING Diesel fuel is flammable. Do not perform fuel system procedures near open flames. Injury or death to personnel may result. Before performing fuel system procedure, allow engine to cool. Failure to do so may result in injury or death to personnel. NOTE All fuel return tees and tubes are replaced the same way. 1. Loosen two tube nuts (2) on fuel return tube (3), injector nozzle return tee (1), and elbow (4). 2. Remove tube (3) and two tube nuts (2) from injector nozzle return tee (1) and elbow (4). 3. Remove elbow (4) from injector nozzle (6). 4. Disconnect tube nut (7) from injector nozzle return tee (1) and remove injector nozzle return tee (1) from injector nozzle (5). 5. Cut new tube (3) to same length as old tube (3). Discard old tube (3). 1. Install injector nozzle return tee (1) on injector nozzle (5) and connect tube nut (7) to tee (1). 2. Install elbow (4) on injector nozzle (6). 3. Install new tube (3) on injector nozzle tee (1) and elbow (4) with two tube nuts (2). FOLLOW-ON TASKS: Connect battery ground cable (para. 4-48). Start engine (TM 9-2320-361-10) and check for fuel leaks. 3-49