FUEL TANK MAINTENANCE (Cont'd)

TM 9-2320-280-20-2 3-42 Change 2 1. Thoroughly clean outside of tank (17) to prevent dirt contamination. 2. Disconnect fuel supply line (26) from fuel supply tube (12) and fuel return line (25) from fuel return tube (29). NOTE Perform step 3 if vehicle is equipped with an arctic heater. 3. Disconnect arctic heater fuel supply line (20) from arctic heater fuel supply tube (13). 4. Remove capscrew (22) and clamp (24) securing fuel supply line (26), fuel return line (25), and shield (21) to fuel tank (17). Remove arctic heater fuel supply line (20), and clamp (23) if installed. 5. Remove two locknuts (6) and washers (7) securing two clamps (8) and jumper harness (5) to access cover (11). Discard locknuts (6). NOTE Prior to removal, tag leads for installation. 6. Disconnect jumper harness leads 28B (1) and 58J (2) from fuel level sender (30) and remove jumper harness (5). NOTE Perform steps 7 and 8 for vehicles with fuel tank P/N 12358588. 7. Remove nine locknuts (9) and washers (10) securing access cover (11), gasket (28), and retainer (27) to fuel tank (17). Discard locknuts (9). 8. Remove access cover (11), gasket (28), and retainer (27) from fuel tank (17). Discard gasket (28). NOTE Perform steps 8.1 through 8.5 for vehicles with fuel tank P/N 12460105. 8.1. Remove nine locknuts (9), washers (10), access cover (11), gasket (28), and retainer (19.2) from fuel tank (17). Discard locknuts (9) and gasket (28). 8.2. Remove eight capscrews (19.4), washers (19.3), and retainer (19.2) from support baffle (19.8). 8.3. Remove twelve O-rings (19.1) from retainer (19.2). Discard O-rings (19.1). 8.4. Remove four locknuts (19.6), washers (19.7), and support baffle (19.8) from fuel tank baffle (19.5). Discard locknuts (19.6). 8.5. Remove support baffle (19.8) and fuel tank baffle (19.5) from fuel tank (17). 9. Match mark position of elbow fittings on access cover (11). NOTE Note position of fuel strainer for installation. 10. Remove fuel strainer (14) from fuel supply tube (12). 11. Remove fuel supply tube (12) from access cover (11). 12. Remove fuel return tube (29) from access cover (11). NOTE • Perform step 13 if vehicle is equipped with an arctic heater. • Vehicles not equipped with an arctic winterization kit will have a plug instead of an arctic heater fuel supply tube. 13. Remove arctic heater fuel supply tube (13) from access cover (11). 14. Remove vent valve (4) and grommet (3) from access cover (11). 15. Remove vent line (18) from tee (19). 16. Loosen clamp (15) and remove filler spout hose (16) from tank (17). 3-24. FUEL TANK MAINTENANCE (Cont'd) c. Disassembly