Cutter shaft slipping off pto
| smitthy
Join Date: Posts: 1
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2004-04-11 82796
the driveshaft to my rotary cutter which i just purchased slips off the pto when i lower the cutter. is there something i'm not doing correctly? it seems that it only slips on to the pto but there is nothing to prevent it from slipping off....
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Cutter shaft slipping off pto
| kwschumm
Join Date: Feb 2003 Posts: 5764 NW Oregon
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2004-04-11 82798
The driveshaft should have a mechanism to lock it to the pto spline shaft. My shafts have spring loaded collars that are pulled back when slipping them into position, then the collar springs back into place locking them in. They don't lock unless the shaft is fully engaged with the pto drive. Your shaft could well be different. ....
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Cutter shaft slipping off pto
| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2004-04-12 82816
It will have a locking mechanism on it and there are several types. I have a collar type mentioned and also pin types. You know you've got it when you push the shaft on and it stops against something and goes further when you pull a collar or push a pin. Once it seems locked it's good practice to give it a good pull to make sure it can't come off.
Good you found the problem. I seem to recall a story about some major damage done when one came off in operation. ....
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Cutter shaft slipping off pto
| Murf
Join Date: Dec 1999 Posts: 7252 Toronto Area, Ontario, Canada
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2004-04-12 82829
A lot of driveshafts for cutters are designed to mount in only one direction. They are designed to be fixed to the cutter's gearbox by a bolt through the coupler and input shaft. If your driveshaft is installed backwards there will be no lock mechanism at the tractor end, just a hole through it.
If you see a hole at the tractor end, take the shaft off and turn it end-for-end. You will have to be sure to line the hole in the coupler up with the hole in the input shaft then put a bolt (it sould have been shipped with the shaft) through the two and tighten it down, a little 'Lock-tite' would be a good idea too.
Best of luck.
....
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