TM 10-4320-315-242-31. MAINTENANCE OF FUEL VALVES AND LINESThis task covers: a.Removeb.InstallINITIAL SETUP:ToolsEquipmentConditionsGeneral Mechanics Tool KitPumping assembly is shutdown (refer to TM 10-4320-(Item 1, Appendix B)315-10).Battery assembly is disconnected (para. 2-16).Materials/PartsTags (Item 21, Appendix C)Teflon Tape (Item 22, Appendix C)Tie Straps (Item 20, Appendix C)Lockwashers (TM 10-4320-315-24P)a. REMOVE. (Figure 2-25)(1)Disconnect fuel lines as follows:(a)Cut tie wraps in fuel lines.(b)Disconnect fuel supply line (1) at fitting (2) of fuel selector valve (3) and fitting (4) at engine fueltransfer pump (5). Drain line in suitable container.(c)Disconnect fuel supply line (6) at fuel tank fitting (7) and fitting (8) of fuel selector valve (3). Drain linein suitable container.(d)Disconnect fuel supply line (9) at fitting (10) of auxiliary fuel supply (11) and fitting (12) of fuel selectorvalve (3).(e)Disconnect fuel return line (13) at fitting (14) of fuel return selector valve (15) and at fuel tank returnfitting (16). Drain line in suitable container.(f)Disconnect fuel return line (17) at fitting (18) of fuel return selector valve (15) and at fitting (19) ofauxiliary fuel discharge (20).(g)Disconnect fuel return line (21) at fitting (22) of fuel return selector valve (15). Disconnect other end offuel return line (21) at No. 1 engine injector fuel return (23) by removing banjo bolt (24) and sealwashers (25). Drain line in suitable container.(2)Remove fuel selector valves as follows:(a)If required, tag and disconnect fuel lines.(b)Remove screw (26) and handle (27).(c)Remove capscrews (28), lockwashers (29), and fuel selector valve (3 and/or 15) from enclosure panel.2-68
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