Accessory Housing Maintenance; Accessory Housing Removal - Lycoming TEO-540-C1A Maintenance Manual

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

1. Accessory Housing Removal

NOTICE: Before removing the accessory housing, turn the crankshaft to position the piston in
Cylinder 1 at Top Dead Center (TDC).
A. If not already done, drain the oil from the oil sump per the "Oil Change Procedure" in
Chapter 12-10.
B. Remove the fuel pump per instructions in Chapter 73-10 of this manual.
C. Remove the oil filter per instructions in Chapter 12-10.
D. Disconnect the hoses to the airframe-supplied oil cooler.
E. Remove the Permanent Magnet Alternator (PMA) per instructions in Chapter 72-70.
F. Disconnect all wiring harness connections to accessories installed on the accessory housing.
G. Disconnect all hoses connected to the accessory housing or any accessories installed on the
accessory housing.
H. Remove any other accessories on the accessory housing per airframe manufacturer's
instructions.
NOTICE: There are two different size bolts used on the accessory housing. Identify and keep
the bolts separate for correct reassembly.
I. Remove the bolts, nuts, lock washers, and washers from the external side of the accessory
housing (Figure 1) and the bolts, lock washers, and washers that attach the accessory housing
to the oil sump. Discard the lock washers.
Figure 1
Hardware on External Side
of Accessory Housing
J. Remove the accessory housing from the engine.
K. Remove and discard the accessory housing gasket (Figure 2).
© 2018 Avco Corporation. All Rights Reserved
November 2018

72-25 - ACCESSORY HOUSING MAINTENANCE

Figure 2
Accessory Housing
72-25
Page 201