Re: override cluth

Posted by Farmall Paul on August 16, 2001 at 08:54:00 from (64.254.44.66):

In Reply to: override cluth posted by shan on August 16, 2001 at 07:42:02:

Shan- I just got an over-running clutch for my mower. I was interested to see how it worked, so I took it apart. They have a collar that is splined for the PTO that has 4 slots. It goes into a receiver that has some sawtooth cuts machined into it, and has a splined PTO shaft on the other end. The four slots in the collar had four keys with little curved springs (kinda like a leaf spring) that push the keys out against the receiver part. The keys will lock in the sawtooth cuts when you try to turn the collar one way, but will 'ramp' off if you turn the other way. This way when your mower keeps turning the over-running coupler will slip and not push the trans gears in the tractor. It's a simple idea and seems to work well.The stories about mowers pushing tractors into ponds/fences are SCARY. Paul+

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