Piston Removal - Lycoming TEO-540-C1A Maintenance Manual

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

8. Piston Removal

NOTICE: During removal of each piston pin (Figure 20), the piston will disconnect from the
connecting rod. Support the connecting rod to prevent damage to the connecting rod and
crankcase.
A. Support the piston and remove the two piston pin plugs (Figure 20) and piston pin from the
piston.
B. Remove the piston from the connecting rod.
C. Support the connecting rod one of two ways to prevent damage to the connecting rods and
crankcase:
(1) Install Torque Hold-Down Plates (ST-222) as shown in Figure 21.
OR
(2) Make a loop around the cylinder base studs and connecting rod using a rubber band or the
cylinder base oil seal ring (removed during cylinder removal) as shown in Figure 22.
Figure 21
Torque Hold-Down Plates (ST-222)
CAUTION
D. Start from the top down, use the Piston Ring Expander (P/N 64713) to remove the two top
compression rings and the oil regulating piston expander ring (Figure 20).
© 2018 Avco Corporation. All Rights Reserved
November 2018
Piston Assembly
DURING REMOVAL OF THE THREE PISTON RINGS IN THE NEXT
STEP, USE CARE NOT TO SCRATCH THE PISTON.
Figure 20
Loop Cylinder Base Oil Seal Around Cylinder
Base Studs and on Connecting Rods
Figure 22
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