Connecting Rod Bushing Replacement - Lycoming TEO-540-C1A Maintenance Manual

13. Connecting Rod Bushing Replacement

NOTICE: Replace the connecting rod bushing if it is damaged or if the inner diameter of the
bushing is worn beyond service limit per the Connecting Rod Inspection Checklist for
TEO-540-C1A Engines.
A. Clamp the connecting rod on the Connecting Rod Bushing Replacement Block (P/N 64597)
in such a manner that the small bushing in the rod is in alignment with the hole stamped
"Remove Bushing".
B. Use the Connecting Rod Bushing Removal Drift (P/N 64535) to drive the bushing out of the
rod.
C. Move the connecting rod to the "Install and Burnish" position and clamp it securely in place.
D. Use the Replacement Drift (P/N 64536) to install the new connecting rod bushing where
shown in the connecting rod (Figure 33).
Bushing Installed in the Connecting Rod
E. Make sure the split in the bushing is located so that it is toward the piston end of the
connecting rod and 45° off the centerline (Figure 34) and press the bushing into the
connecting rod until the edge of the bushing is flush with the surface of the connecting rod.
F. Use a suitable arbor press and the Connecting Rod Bushing Burnisher (P/N 64580) to burnish
the bushing in place.
G. Pass the burnisher completely through the bushing.
H. Examine the bushing after burnishing to make sure the bushing is flush to 0.010 in. (0.254
mm) below the connecting rod surface (Figure 35) on both sides of the connecting rod.
I. Remove the connecting rod from the holding block and complete a final bore of the bushing
to the diameter shown in the latest revision of the Service Table of Limits - SSP-1776.
J. As a check, measure the bushing inner diameter with the Finish ID Gage (P/N 64767).
K. Complete the "Connecting Rod Parallelism/Squareness Check" in this chapter.
L. If the assembly does not pass this check, replace the connecting rod assembly.
M. Record replacement of the connecting rod bushing in the engine logbook.
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Page 158
Figure 34
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 35
Bushing Burnished Flush to 0.010 in.
(0.254 mm) Below Connecting Rod Surface
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November 2018