Service Instruction No. 1586

Oil Filter Base Bypass Spring Replacement

Publications
SERVICE INSTRUCTION NO. 1586
DATE:

December 2, 2021

SUBJECT:

Oil Cooler Bypass Valve Assembly Replacement

MODELS AFFECTED:

Lycoming TEO-540-C1A

TIME OF COMPLIANCE:

At next scheduled oil change

Get It Exchanged

Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.