UTU clutch noise

karl f · Apr 12, 2011

I have noise coming from the clutch area that sounds like a worn out pto shield flopping on its shaft or exposed dry gear train on steamer. It seemed to pulse about 2x a second at half throttle. It's there whether the clutch is engaged or disengaged. I didn't investigate too deeply other than peering in the inspection hole with a flashlight. It was loudest inside the hole. Throwout bearing has grease.
Any ideas? Just thought of this: maybe starter drive was stuck?
thanks
karl f

hardscrabble · Apr 12, 2011

Sounds like you're on the right track. Could very well be a starter drive that is not retracting after the engine starts.

J.Wondergem · Apr 13, 2011

If it is engaged, it could through all the solder out of the starter.

Bob M · Apr 13, 2011

I agree - sounds like the starter pinion is not retracting fully.

Try starting the engine then loosening the starter and sliding it forward a bit. If the noise stops remove the starter and check the pinion drive. Could be a simple cleaning/lube of the bendix screw will correct the problem.

karl f · Apr 15, 2011

using the stick-o-scope method, the starter area is
quiet. wiggling the throw out makes no difference to the noise. So far closing the clutch door makes the
most difference

The source might be on the flywheel side of the
engine or in the clutch housing. More non
destructive testing and investigation is in order.

karl f

UTU clutch noise

karl f

Well-known Member

hardscrabble

Member

J.Wondergem

Well-known Member

Bob M

Well-known Member

karl f

Well-known Member

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