CHAPTER 13: MAINTENANCE OF APUTM 9-2350-256-2013.5 REPLACE APU ENGINE FUEL FILTERS-Continueda.REMOVAL1Remove clamp (1) from fuel line (2) by removing nut (3), lockwasher (4), flat washer (5), and screw (6).2Remove U-bolt (7) from fuel line (8) by removing two nuts (9) and two lockwashers (10).3Disconnect fuel lines (2 and 8) from the APU engine fuel filter fittings (11).NOTEOpen drain cocks (12) on bottom of each filter and drain before removal of filters.4Remove APU engine fuel filters and fittings (11) by removing three screws (13) and three lockwashers (14).5Remove primary fuel filter (15) and secondary fuel filter (16) by removing from each one screw (17) and one flatwasher (18).NOTERemove ID plate (19) only if required.6Remove ID plate (19) by removing four rivets (20).13-6
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