Re: Woodruff key on PTO

Posted by Michael Soldan on April 21, 2005 at 06:23:38 from (66.203.172.221):

In Reply to: Woodruff key on PTO posted by J.D. Palmer on April 20, 2005 at 16:03:23:

JD, Chris, Captaink, maybe I am misunderstanding the set up that is the problem, but the shaft end that has a keyway should of course never shear or break, the shear pin that is the safety feature should be at the opposite end of the shaft..at the tractor pto...so the way I am picturing this a new piece of keystock should be cut and placed into the slot, a set screw should be tapped through the shaft into the key to hold it in place, then a hard bolt should go through the existing hole in the shaft and tightened harshly. At the pto end there should be a collar for a shear pin of softer material. Now if there is no set screw holding the key it could wiggle loose and fall out wherupon the bolt could break, assuming it is not of hard quality. The set screws are hardened and drilled hollow at the end so it will cut into the key and hold it securly. I had to mess with a shaft on the snowblower this winter and the trouble was with a set screw that didn't do its job...good luck getting this shaft working...Mike in Exeter Ontario

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