O-320-E2D, -E3D Series . Illustrated Parts Catalog . October 2011 . PC-203-6 . 652 Oliver Street© Williamsport, PA 17701 . 2011, 10/27/2010 · The valve should rotate and the exhaust valve has a rotator on top of it between the rocker arm and the valve . I have had two cases recently of the opposite problem. The valve guides were too tight on an O-320 I built with new Superior cylinders and an O-360 that had new cylinders from Lycoming I.
LYCOMING OPERATOR’S MANUAL SECTION 1 O-320 SERIES DESCRIPTION SECTION 1 DESCRIPTION The O-320 series are four cylinder, direct drive and, horizontally opposed, air cooled engines. In referring to the location of the various engine components, the parts are described in their relationship to the engine as installed in the airframe.
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O-320 Series, O-320 Series, O-320 Series, O-320-E2D, -E3D Series Illustrated Parts Catalog, 12/15/2007 · Lycoming issued Service Instruction 1425A to explain the typical causes for exhaust valve sticking and some preventative actions to be taken. Mandatory Service Bulletin 388C gives procedures to determine the condition of the valve stem and valve guide clearance. Service letter 234B explains Lycoming ’s tool rental policy and refers to their …
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11/22/2004 · Supersedes Service Bulletin No. 388B and Supplement No. 1 to Service Bulletin No. 388B November 22, 2004 TIME OF COMPLIANCE Helicopter Engines – 300 hour intervals or earlier if valve sticking suspected. All Other Engines – 400 hour intervals or earlier if valve sticking suspected until exhaust valve guides are replaced with guides made of improved material.
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