TM 9-2320-361-20 14-29. PRIMARY HEATER FUEL SHUTOFF AND COUPLING REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS M019A3 and M185A3 MATERIALS/PARTS Three gaskets Antiseize tape (Appendix C, Item 27) REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Fuel tank drained (para. 3-24). Fuel tank filler cap and sleeve removed (para. 3-22). GENERAL SAFETY INSTRUCTIONS Keep fire extinguisher nearby when working with open fuel lines. WARNING Do not perform this procedure while smoking or within 50 feet of sparks or open flame. Fuel is flammable and can explode easily, causing injury or death to personnel and damage to equipment. NOTE Have drainage container ready to catch fuel. 1. Remove hose (8) from shutoff (1) and allow fuel to drain from hose (8). 2. Remove shutoff (1) from nipple (2). 3. Remove nipple (2) and plug (3) from tee (4). 4. Remove tee (4) from coupling (5). 5. Reach through fuel fill port (10) and remove nut (12), sleeve (13), and tube (11) from adapter (14). 6. Remove adapter (14) from nut (15). 7. Remove nut (15), two gaskets (6), washer (7), coupling (5), gasket (6), and washer (7) from fuel tank (9). Discard gaskets (6). NOTE Wrap male pipe threads with antiseize tape prior to installation. b. Installation 1. 2. 3. 4. 5. 6. 7. Reach through fuel tank fill port (10) and install nut (15), two new gaskets (6), washers (7), new gasket (6), and coupling (5) on fuel tank (9). Install adapter (14) on nut (15). Install sleeve (13), nut (12), and tube (11) on adapter (14). Install tee (4) on coupling (5). Install nipple (2) and plug (3) on tee (4). Install shutoff (1) on nipple (2). Install hose (8) on shutoff (1). 14-44