Lycoming TEO-540-C1A Maintenance Manual page 360

(7) Loosen the two bolts, thick washers, and lock washers from the bottom forward end
(closest to the engine) of the throttle body. Refer to Figure 1.
(8) Lift the throttle body up far enough for the bolt slots to clear the bolts loosened in the
previous two steps.
(9) Remove the throttle body and the bolts, thick washers, and lock washers loosened in the
earlier steps. Discard the lock washers.
(10) Label the location of the two gaskets (Figure 1) for reference. Remove and discard the
two gaskets, one from each end of the throttle body.
NOTICE: The two gaskets have different part numbers and are specific for each end of the
throttle body.
B. (Electronic) Throttle Body Installation
NOTICE: The two gaskets (Figure 1), one on each end of the throttle body have different part
numbers and are specific for each end of the throttle body.
(1) Compare the two new gaskets with the removed gaskets to correctly identify which of the
two gaskets to install on each end of the throttle body.
(2) Install the correct new gasket on each respective end of the throttle body. Install the lower
bolts, thick washers (with the washers on the non-mating face of the throttle body
flanges), with a new lock washer to hold each gasket in place.
(3) Install the throttle body, with the throttle input lever on the left side (looking forward),
onto the installed four bolts - do not tighten the bolts yet. Make sure that the washers are
on the non-mating face of the throttle body flanges.
(4) Install but do not tighten the upper bolts, washers and new lock washers.
(5) Make sure each gasket is seated and installed correctly on the throttle body ends.
(6) Torque all of the bolts to the specified limits in the Standard Torque Tables in the latest
revision of the Service Table of Limits - SSP-1776.
(7) Install the throttle cable in the same hole as removed on throttle body input lever.
(8) Connect the harness connectors to the Throttle Position Sensor and Delta Pressure
Sensor.
(9) Connect the battery.
(10) Complete the "Operational Test of the Throttle Body" in this chapter to be sure gaskets
do not leak.
2. Operational Test of the Throttle Body
A. Move the power control for a fluid movement.
B. Make sure that the linkage has the correct amount of play for movement.
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TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
November 2018