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Old 05-07-2015, 09:15 AM
pierre smith's Avatar
pierre smith pierre smith is offline
 
Join Date: Jan 2005
Location: Louisville, Ga
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Default Front seal question
How can a front seal be pushed out of a 4 cylinder Lycoming if the breather tube is not plugged, nor fitted to the exhaust with that controversial orifice?

It happened a couple of days ago near here.....details later.

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Old 05-07-2015, 09:58 AM
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Running a F/P prop without the rear plug pearced/removed will cause this.
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  #3  
Old 05-07-2015, 10:15 AM
Ralph Inkster Ralph Inkster is offline
 
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Default
or insufficient or wrong adhesive applied or applied to dirty surface
or retainer ring not installed (some applications)
or wrong seal (split / not split)
or incorrect 'clocking' split seal on installation
or stuck relief valve
or ...
Could the thermister or filter bypass cause a surge?
I also seem to remember oversized seals being available for overbore cases.
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built a few RVs, rebuilt a few more, hot rodded some, & maintained/updated a bunch more
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