Fuel Pressure Regulator Replacement - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
B. Fuel Pump Installation
CAUTION
(1) Clean the fuel pump accessory pad and fuel pump spacer (Figure 10) to make sure that all
gasket material has been removed.
(2) If installing a new fuel pump, remove the 90º elbow, fuel pump filter and pressure sensor
adapter, and 1/8 NPT to 1/4 tube from the removed fuel pump, and install these
components on the new fuel pump.
(3) Install two new gaskets with the spacer on the fuel pump mount pad on the studs on the
accessory pad as shown in Figure 10.
(4) Install the fuel pump on the accessory pad studs.
(5) Install a washer, a new lock washer and a nut on each of the accessory pad studs.
(6) Torque the nuts to the specified limit in the Standard Torque Tables in the latest revision
of the Service Table of Limits - SSP-1776.
(7) Connect the fuel pump inlet supply hose to the 90º elbow on the fuel pump (Figure 10).
(8) Connect the fuel pump outlet hose to the fuel pump filter.
(9) Attach the harness connector to the Fuel Pump Pressure Sensor on the fuel pump outlet.
(10) Install and tighten the bleed cap on the fuel pressure regulator bleed port.
CAUTION
(11) 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.
(12) 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.

11. Fuel Pressure Regulator 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 pressure regulator 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.
© 2018 Avco Corporation. All Rights Reserved
November 2018
DO NOT USE SHARP METAL OBJECTS TO CLEAN GASKET
MATERIAL FROM FUEL PUMP MATING SURFACES ON THE
ACCESSORY DRIVE AND SPACER. NICKS AND GOUGES COULD
RESULT, PREVENTING GASKETS FROM PROVIDING AN ADEQUATE
SEAL.
DO NOT DAMAGE THE TWO GASKETS DURING INSTALLATION. A
FUEL LEAK CAN OCCUR.
DO NOT RETURN THE ENGINE TO SERVICE UNLESS THE
ENGINE IS OPERATING CORRECTLY AND DOES NOT HAVE ANY
LEAKS.
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