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

(2) Apply a light coat of engine oil to the new O-ring. Leave the first leading thread free and
apply a 360° bead of Loctite
pump filter.
(3) Install a new fuel pump filter or serviceable clean fuel pump filter with the O-ring in the
adapter and initially hand-tighten the filter.
(4) Torque the fuel pump filter to between 40 and 43 ft.-lb. (54 and 58 Nm).
(5) Connect the fuel outlet hose to the fuel pump filter.
(6) Install and tighten the bleed cap on the fuel pressure regulator bleed port.
CAUTION
(7) Look for any fuel leak. Identify and correct the cause of any fuel leak. There must not be
any leak. All fuel connections must be secure and torqued in accordance with the
Standard Torque Tables in the latest revision of the Service Table of Limits - SSP-1776.
(8) If a leak or malfunction was found and corrected, operate the engine again to make sure it
is operating correctly and there is no leak anywhere.

10. Fuel Pump 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.
.NOTICE: If this fuel pump 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 Pump Removal
(1) Put a collection container under the engine where the fuel hose connects to the fuel pump
inlet (Figure 10).
(2) Loosen the cap on the fuel pressure regulator bleed port to release pressure from the fuel
hoses.
(3) Disconnect the fuel inlet hose from the 90º elbow on the fuel pump.
(4) Disconnect the fuel outlet hose from the fuel pump filter.
(5) Let the fuel drain into the collection container. Remove the collection container. Dispose
of the fuel in accordance with environmental regulations.
(6) Disconnect the harness connector from Fuel Pump Pressure Sensor on the fuel pump
outlet.
(7) Remove four nuts (Figure 10), washers, and lock washers that attach the fuel pump to the
accessory drive. Discard the lock washers.
(8) Remove the fuel pump from the studs on the accessory pad.
(9) Remove the two gaskets and spacer from the accessory pad. Discard the gaskets.
73-10
Page 324
®
LB-8009
DO NOT RETURN THE ENGINE TO SERVICE UNLESS THE
ENGINE IS OPERATING CORRECTLY AND DOES NOT HAVE ANY
LEAKS.
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
™
to the following three to four threads of the fuel
© 2018 Avco Corporation. All Rights Reserved
November 2018