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<DIV><FONT face=Arial size=2>Yesterday I replaced the rear bearing on a new 91FX
installed on or about 7-06-04.Maybe 60 flts, API for stock bearings. Since the
front bearing seldom needs replacing I feel the culprit is probably
exhaust vapors causing the rapid </FONT></DIV>
<DIV><FONT face=Arial size=2>deterioration? In another airplane I have over 600
flts on a 91FX with a sealed bearing. In changing the rear bearing I wonder if
dropping a cold bearing into a hot case (350deg) could damage the rubber
seals------ </FONT></DIV>
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size=2>
Nat Penton</FONT></DIV></BODY></HTML>