Fuel Hose Replacement - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual

5. Fuel Hose Replacement

WARNING DO NOT SMOKE OR HAVE AN OPEN FIRE FLAME OR USE ANY DEVICE
THAT CAN MAKE SPARKS. FLAMES OR SPARKS CAN CAUSE FUEL
IGNITION WHICH CAN CAUSE SERIOUS BURNS, INJURY OR DEATH.
CAUTION DO NOT ATTEMPT TO REPAIR A DAMAGED FUEL HOSE. REPLACE
ANY FUEL HOSE THAT IS BRITTLE, CRACKED, OR KINKED; CRACKS
CAN DEVELOP AT THE SIDE OF SHARP BENDS OR KINKS.
NOTICE: If this fuel hose replacement procedure is completed with the engine installed in the
airframe, refer to the airframe manufacturer's instructions for shutting off the fuel and
grounding the aircraft.
A. Fuel Hose Removal
(1) Put a fuel collection container under the fuel hose (Figure 3) at each fitting connection.
(2) Make a sketch to identify clamps that attach to brackets for reference on assembly.
(3) Remove and discard the P and L clamps (Figures 5 and 6) from the fuel hose.
(4) Disconnect the fuel hose from the fitting on each end.
(5) Remove the fuel hose. (Keep the fuel fittings if they are not part of the fuel hose.)
NOTICE: If no clamps were attached to the fuel hose, replace the fuel hose and install
serviceable cushioned clamps to dampen vibration.
B. Fuel Hose Installation
WARNING DO NOT ROUTE FUEL HOSES CLOSE TO HEAT SOURCES. HEAT
NOTICE: Refer to the TEO-540-C1A Illustrated Parts Catalog fuel hose part numbers. Figure
3 shows a conceptual example of a fuel hose routing configuration. Some fuel hose
configurations can either use short or long fuel injector lines. Your fuel hose routing
configuration could be different.
(1) Do not let the fuel hose touch the engine or aircraft baffle hardware.
(2) Make sure there is a minimum clearance of 3/16 in. (4.76 mm) between a fuel hose and
any engine or aircraft surface.
(3) Make sure the fuel hose is not crimped or kinked, there are no cracks at solder joints, and
the fuel hose is in compliance with Figure 4 for the minimum acceptable bend in the fuel
hose.
NOTICE: If installing a new fuel hose where fittings were not attached as part of the fuel
hose assembly, the fitting can be installed if the threads are not damaged.
(4) Connect the fuel hose to the fuel fitting on each end.
© 2018 Avco Corporation. All Rights Reserved
November 2018
CAN DAMAGE THE FUEL HOSE AND CAUSE A FUEL LEAK WHICH
COULD LEAD TO CATASTROPHIC ENGINE FAILURE.
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