TM 9-6115-668-137.Remove two nuts (45), two serrated lock washers (46) and two washers (47) from two screws (43)and pull out one screw (43) with lock washer (42).8.Remove two step fuel filter (41) from angle rail (22) by holding fuel lines (39, 40), clamps (44) andscrew (43) with washer (42).1.place two step fuel filter (41) on angle rail (22) by holding fuel lines (39, 40), clamps (44), and screw(43) with washer (42).2.Install one screw (43) with washer (42), two washers (47), two serrated lock washers (46) and twonuts (45) onto two screws (43), lighten nuts (45).NOTEUse new sealing rings.3.Install hollow screw (35), new sealing rings (36, 37) and fuel return line (38) on two step fuel filterassembly (41).4.Install hollow screw (24), new sealing rings (25, 26) and fuel inlet line (23) on two step fuel filter as-sembly (41).5.Install condensation plugs (30.31) with new sealing rings (29) and (32).NOTEDo not tighten bleed screws (27, 34) prior to bleeding the fuel system.6.Install bleed screws (27, 34) with new sealing rings (28, 33).7.Bleed fuel system as instructed in paragraph 4.38 and 4.39.8.Install unit hood assembly (1) as instructed in paragraph 4.14.4-97
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