Crankshaft End Play Clearance Check - Lycoming TEO-540-C1A Maintenance Manual

(25) Before the oil sump is installed, safety wire the nuts that will be inside the oil sump in
accordance with standard practices (Figure 99).

25. Crankshaft End Play Clearance Check

Complete the crankshaft end play clearance check after the crankshaft is installed and the
crankcase halves have been assembled. Verify the crankshaft end play clearance is within
acceptable limits.
A. Attach a dial indicator gage to the crankcase starter pad.
B. Move the crankshaft to the rear of the engine as far as possible.
C. Position the dial indicator gage on the
face of the crankshaft flange (Figure
100) and set the gage to read "0."
D. Slide the crankshaft forward as far as
possible.
E. Read the end play measurement
indicated by the gage.
F. Set the gage to read "0" with the
crankshaft as far forward as possible.
G. Move the crankshaft to the rear of the
engine as far as possible.
H. Read the end play measurement
indicated by the gage.
I. Both measurements must be the same and the reading must be 0.009 to 0.026 in. (0.229 to
0.660 mm).
J. If the measurements are not the same or if the end play clearance is not within the limits,
disassemble the crankcase and examine the crankcase and/or crankshaft for wear or damage.
Replace a worn or damaged component.
72-20
Page 188
Safety Wire on the Nuts in the Crankcase Oil Sump
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 99
Crankshaft End Play Check
© 2018 Avco Corporation. All Rights Reserved
Figure 100
November 2018