Intake Valve Replacement - Lycoming TEO-540-C1A Maintenance Manual

13. Intake Valve Replacement

A. Intake Valve Removal
(1) Remove the cylinder from the engine per the "Cylinder Removal" procedure in this
chapter.
(2) Remove the intake valve stem cap (Figure 27).
(3) Use a Valve Spring Compressor Tool (ST-25) to compress the intake valve spring and
remove the valve stem key.
(4) Remove the valve spring seats and valve springs from the exhaust valve.
NOTICE: Use care not to scratch the inside of the cylinder barrel when removing the
intake valve.
(5) Remove the intake valve from the valve guide, through the cylinder barrel.
B. Intake Valve Installation
NOTICE: Use care not to scratch the inside of the cylinder barrel when installing the intake
valve.
(1) Apply lubricant identified in the latest revision of Service Instruction No. SI-1059 to the
intake valve stem.
(2) Install a serviceable intake valve in the valve guide (Figure 27), through the cylinder
barrel.
(3) Install the valve spring seats and valve springs,
(4) Use a Valve Spring Compressor Tool (ST-25) to compress the intake valve spring and
install the valve stem key.
(5) Install the intake valve stem cap on the intake valve.
(6) Install the cylinder on the engine per the "Cylinder Installation" procedure in this chapter.
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TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 27
Intake and Exhaust Valves
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November 2018