Lycoming TEO-540-C1A Maintenance Manual page 333

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
C. Starter Ring Gear Installation
(1) Put the starter ring gear support on a flat surface (Figure 51) with the alternator/generator
belt groove upward.
(2) Heat the new starter ring gear to approx. 450°F (232°C) in an oven or with a torch.
(3) Assemble the heated gear on the ring gear support (with the tooth chamfer up).
NOTICE: As the starter ring gear cools, it will shrink to the support.
(4) Use a 0.0015 in. (0.0381 mm) feeler gage to measure the clearance between the starter
ring gear and support at both locations where the ring gear and support surfaces make
contact. Measure around the entire circumference. The clearance measurements must be
the same to ensure correct seating of the starter ring gear against the starter ring gear
support face. Different clearance measurements are an indication of incomplete assembly
or warpage, remove and replace the starter ring gear. Refer to the TEO-540-C1A
Illustrated Parts Catalog to make sure the correct starter ring gear is installed.
(5) Install the starter ring gear support with the new starter ring gear on the crankshaft flange
per the "Starter Ring Gear Support Installation" section in this chapter.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Figure 51
Starter Ring Gear Support
72-70
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