Crankshaft Disassembly - Lycoming TEO-540-C1A Maintenance Manual

R. Remove the six piston cooling oil nozzles from the crankcase (Figure 18).

4. Crankshaft Disassembly

WARNING USE CARE WHEN HANDLING THE CRANKSHAFT AND ITS PARTS – DO
NOT ETCH OR MAKE MARKS ON THE CRANKSHAFT. AN ETCH OR A
MARK CAN CAUSE WEAKNESS AND FATIGUE IN THE CRANKSHAFT,
WHICH COULD CAUSE CRANKSHAFT FAILURE.
NOTICE: Any time the crankshaft gear bolt (Figure 2) is removed from the crankshaft trigger gear
assembly, the bolt is to be discarded and replaced with a new bolt for the applicable
crankshaft trigger gear assembly. The discarded bolt is not to be re-installed on any
engine.
Do not remove the alignment dowel (Figure 19) from the end of the crankshaft unless it
is damaged. Replace a damaged alignment dowel per the "Alignment Dowel
Replacement" procedure in this chapter.
Do not remove the propeller flange bushings unless they are loose or damaged (Chapter
72-15).
NOTICE: Skip the next step if a constant speed propeller is used because an expansion plug is not
installed in the crankshaft.
CAUTION DO NOT DRILL THE EXPANSION PLUG OR USE A MAGNET TO
REMOVE THE PLUG OR ANY LITTLE PIECES OF PLUG REMNANTS.
ALWAYS POSITION THE PUNCH OR SHARP TOOL IN THE CENTER OF
THE EXPANSION PLUG TO PREVENT DAMAGE TO THE INNER
SURFACE OF THE CRANKSHAFT WHICH WILL REQUIRE
REPLACEMENT OF THE CRANKSHFT.
72-20
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TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 18
Piston Cooling Nozzles
© 2018 Avco Corporation. All Rights Reserved
November 2018