REFLECTOR: A lot more on crankshaft seals and venting

[Laurence Coen]

This is my personal experience with Lycoming crankshaft seals.  This is on a Cherokee 180D, O360.  The crank was seeping oil and we had an AP replace the seal.  He removed the spring and CUT the seal to install it on the crankshaft.  Then he replaced the spring and installed it into the seal recess with ply-o-bond.  Some months latter I discovered that the seal not only came out  it was completely missing.  The surprising thing was that there was no more oil loss than when the original worn oil seal was in place.  I replaced the seal using the correct procedure of stretching it over the prop flange and glued it in with permatex #2.  No more problems.  The take away is that if you lose all your oil on a single flight because you lost your crank seal, then something else is terribly wrong.

Larry Coen
N136LC


From: Jeff Barnes 
Sent: Saturday, September 28, 2013 9:28 PM
To: Sportair 
Cc: Velocity Reflector ; canard-aviators 
Subject: REFLECTOR: A lot more on crankshaft seals and venting


Whoa, 

  Great thread. http://tugantek.com/cozylinks/NNLS/Engines/nlCaseSealsVenting.php

  Just in time for fall/winter season. 

Regards,

Jeff Barnes
847-331-2567


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