Pilot bearing? - Saab 900 Bulletin Board - Saabnet.com
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Pilot bearing?
Posted by burlyb (more from burlyb) on Fri, 28 Mar 2003 16:52:22
In Reply to: Strange tranny noise ('89 900T), Andrew Szafran, Fri, 28 Mar 2003 13:17:28
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The symptoms you describe are idential to what I experienced with a seized pilot bearing in the flywheel. What I saw when I replaced the clutch (clutch replaced as a maintenance item since I had to get at the pilot bearing anyway) was the pilot bearing walking out of the flywheel and mashing into the splines on the clutch driveshaft. Metallic squeal while depressing the clutch pedal or holding it disengaged. I can't explain why you'd have the sound while in gear, but you did mention "especially when coasting with the clutch disengaged in gear" - which supports the pilot bearing idea. From my experience the throw out bearing tends to squeal when idling and not when disengaging the clutch, as it's always in contact with the pressure plate.
posted by 216.160.1...
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