TM 9-2320-361-20 3-24. FUEL TANK REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS All Except M275A2 MATERIALS/PARTS Four locknuts Antiseize tape (Appendix C, Item 27) PERSONNEL REQUIRED Two REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Battery ground cable disconnected (para. 4-48). Fuel tank filler cap and sleeve removed (para. 3-22). GENERAL SAFETY INSTRUCTIONS Diesel fuel is flammable. Do not perform fuel system procedures near flames. Some vehicles have two separate wires and connectors. Connecting wires on wrong terminals may cause fuel to ignite, resulting in injury to personnel. WARNING Diesel fuel is flammable. Do not perform fuel system procedures near open flame. Injury or death to personnel may result. NOTE Have drainage container ready to catch fuel. Fuel tanks on M342A2 vehicles have three retaining straps. 1. Drain fuel from fuel tank (4) by removing drainplug (8) from fuel tank (4). NOTE Male pipe threads must be wrapped with antiseize tape before installation. 2. Install drainplug (8) on fuel tank (4). 3. Disconnect fuel return tube (6) from elbow (5) and remove elbow (5) from fuel tank (4). WARNING Some vehicles have two separate wires and connectors. Mark wires for installation. Connecting wires on wrong terminals may cause fuel to ignite resulting in injury to personnel. CAUTION Perform steps 4 through 7 if removing fuel tank from M109A3, M185A3, and M756A2 series trucks. 4. Disconnect connector (16) from fuel pump (15). 5. Disconnect vent tube (18) from elbow (17) and remove elbow (17) from fuel pump (15). 6. Disconnect fuel supply tube (14) from fuel pump (15). 7. Disconnect connector (12) from sending unit (13). 8. Remove two locknuts (2) and screws (1) from two retaining straps (3) and (10). Discard locknuts (2). 9. Remove two locknuts (9), screws (11), and two retaining straps (10) from fuel tank hangers (7) and retaining straps (3). Discard locknuts (9). 3-34