Lycoming Oil Pressure Relief Valve Spring, O-360-A4M, 68668
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Lycoming 68668 is an oil pressure relief valve spring for the O-360-A4M engine. Lycoming lists it as one of five selectable relief valve springs for this engine.
- Select the spring that leaves at least three threads exposed on the adjusting screw, so the valve can still be adjusted in the field
- Spring identification is given in the latest revision of the Lycoming Table of Limits, SSP-1776, Part I
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