Re: Why does it make noise?

Posted by Joe (Wa) on July 16, 2005 at 10:51:13 from (67.5.135.252):

In Reply to: Why does it make noise? posted by kenojoe on July 16, 2005 at 04:33:37:

The older Case number series (300, 400, 500, etc) tractors had a spring on the driven shaft that holds the throwout bearing in tension against the pressure plate levers (fingers). The bearing race is notched or has a roll pin that contacts the side of a lever and makes the bearing rotate all the time the flywheel is turning per design.

The spring can be weak/broken or the notch/roll pin can wear down and slip over the pressure plate levers making a noise (my 300) that is dampened by forcing the the bearing race up against the levers.

The throwout bearing race/balls can be worn and rough producing a noise that changes pitch as the bearing rpm is forced into synch with the flywheel rpm.

Joe

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