Accessory Drive Inspection - Lycoming TEO-540-C1A Maintenance Manual

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

1. Accessory Drive Inspection

A. Look for damage to engine-mounted accessories such as pumps. Replace damaged
accessories.
B. Make sure any attached accessories are attached securely at the correct torque. Refer to the
latest revision of the Service Table of Limits - SSP-1776 for torque values and tighten any
loose hardware as necessary.
2. Vacuum Pump Replacement (if installed)
A. Vacuum Pump Removal
Remove the vacuum pump (Figure 1) from the accessory drive
housing in accordance with the aircraft manufacturer's
instructions.
B. Vacuum Pump Installation
Install the vacuum pump (Figure 1) on the accessory drive housing
in accordance with the aircraft manufacturer's instructions.
3. Vacuum Pump Driven Gear Replacement (if installed)
A. Vacuum Pump Driven Gear Removal
(1) Remove the four nuts, lock washers, and washers from the vacuum pump adapter or
vacuum pump cover (Figure 2). Discard the lock washers.
(2) Remove the vacuum pump or vacuum pump cover, gasket, and oil seal from the vacuum
pump adapter. Discard the gasket and oil seal.
(3) Examine the oil seal for wear and damage. If necessary remove the oil seal with Seal
Puller P/N ST-172, discard, and replace.
(4) Remove and discard the pin from the vacuum pump adapter.
© 2018 Avco Corporation. All Rights Reserved
November 2018
72-60 - ACCESSORY DRIVES
Figure 2
Vacuum Pump Drive and Cover
Figure 1
Vacuum Pump
72-60
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