Lycoming TEO-540-C1A Maintenance Manual page 298

(5) Remove the vacuum pump adapter, the accessory drive gasket, the drive gear washer
from the vacuum pump driven gear. Discard the accessory drive gasket.
(6) Remove the vacuum pump driven gear (and thrust button within the gear) from the
accessory housing.
(7) Remove any remaining gasket material from the vacuum pump or vacuum pump cover,
vacuum pump adapter, and accessory housing mounting surface per instructions in the
table in Chapter 05-30.
B. Vacuum Pump Driven Gear Installation
(1) Apply engine oil mixture to the vacuum pump driven gear.
(2) Install a new pin in the vacuum pump adapter.
(3) Install the vacuum pump driven gear (with the thrust button already installed inside the
geared end) and drive gear washer in the vacuum pump adapter (Figure 2).
(4) Install a new accessory adapter gasket on the vacuum pump adapter in the correct
orientation as shown in Figure 2.
(5) Install the vacuum pump adapter with a serviceable oil seal on the accessory housing as
shown in Figure 2.
(6) Install the vacuum pump with a new gasket on the vacuum pump adapter in accordance
with the aircraft manufacturer's instructions.
or
Install the vacuum pump cover and new gasket with four nuts, new lock washers, and
washers on the vacuum pump adapter. Torque the nuts to 96 in.-lb. (11 Nm)
72-60
Page 268
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
November 2018