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Old 05-16-2020, 09:29 AM   #2
Roger V
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Join Date: May 2010
Location: Michigan
Posts: 1,593
Default Re: Now What, should this be???

Looks like the shaft was never checked for in and out movement upon installation. Due to wear in the head where the shaft rides a original spec shaft will move. The spec was around .006/.010" clearance if I recall. Today most use the shaft locking collar to keep it from excess movement. If yours has that collar, then maybe it came loose and just needs tightening(if not damaged). The 1/8" likely will not hit the radiator but the danger is supposedly the harmonic vibration could snap the shaft driving it into the radiator. I have seen a quarter inch plus!

Last edited by Roger V; 05-16-2020 at 10:37 AM.
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