Service Instruction No. 1512

Main and Connecting Rod Bearing Upgrade

Publications

DATE: September 23, 2004

MODELS AFFECTED

All Lycoming model engines.

TIME OF COMPLIANCE

Whenever new bearings are installed.

Lycoming has recently upgraded the main and connecting rod bearings. The superseded bearing part numbers and the upgraded bearing part numbers are shown in the table below. Lycoming requires the use of the upgraded bearing whenever new bearings are installed.

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Supplement No. 1 to Service Instruction No. 1512

For more information on this topic, refer to Supplement No. 1 to Service Instruction No. 1512.

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