Supersedes Service Instruction No. 1241B
DATE: April 18, 1997
All Textron Lycoming engines.
Prior to initial start after engine change, overhaul, oil cooler replacement or draining or any prolonged period of inactivity.
Supersedes Service Instruction No. 1094 C
DATE: March 25, 1994
All Lycoming Opposed Series Engines.
As required during aircraft operation.
Lycoming strongly recommends that all engine instrumentation be calibrated annually. All instrumentation for manifold pressure, engine RPM, oil temperature, cylinder head temperature, exhaust gas temperature, and turbine inlet temperature in the aircraft should be included in this annual calibration.
August 1991
O-540 (WFC) Parts Catalog
PC-515
DATE: June 3, 1988
All AEIO-540-D series, IO-540 (250 & 260 horsepower) engines converted for aerobatic flight or any other 540 engines employing a 2-3/8 diameter main bearing seal used in unlimited category aerobatic maneuvers.
Visual inspections within next 10 hours and at each 10 hour interval of unlimited aerobatics or earlier at owner's discretion.
DATE: August 15, 1986
All Avco Lycoming Direct Drive Engines.
Each 100 hour inspection.
During each 100 hour inspection, Avco Lycoming Textron recommends the use of one of two methods for checking alignment of engine timing marks prior to timing magneto to engine.
August 1985
O-235-P2A Parts Catalog
PC-302-1
O-235-P2A
July 1980
O-360-A Parts Catalog
PC-306-1
O-360-A1A, O-360-A1AD, O-360-A1F6, O-360-A1F6D, O-360-A1G6, O-360-A1G6D, O-360-A1LD, O-360-A2A, O-360-A2D, O-360-A2F, O-360-A2G, O-360-A3A, O-360-A3AD, O-360-A4A, O-360-A4G, O-360-A4J, O-360-A4K, O-360-A5AD
June 1975
O-340 Operator's Manual
60297-3
O-340-A1A, O-2440-A2A, O-340-B1A
May 6, 1957
All Lycoming opposed series aircraft engines.
During periodic inspection of the engine. (100 hour intervals, or more often at discretion operator.)
Supersedes Service Instruction No. 1193
DATE: June 12,1970
As required.
In some instances, when a valve or one of its related parts is replaced because of failure, a subsequent failure of the same part is experienced. This is the result of neglecting to determine the cause of failure. For example, the failure of avalve canbe causedby installation ofapush rod of incorrect length or acollapsed hydraulic plunger. Failure to detect the incorrect push rod will result in further failure of parts in the valve train.
