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Farmall & IHC Tractors Discussion Forum
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PTO drive shaft

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fred vaccaro

03-17-2008 15:09:56




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I have a 56 HI 240U --I have been using a "Long" rototiller for a garden area on my property. The ground has a lot of rocks and even though I have tried to remove them before tilling the garden--I have on occassion hit one or two. Well, the last time that I hit one I bent the PTO drive shaft enough so that the shifter tube will no longer slide back and forth and the PTO will not disengage. From the looks of this drive shaft this has been a problem at some time before this. It has got a good twist at the front of the shaft and the splines look like a cork screw! I have located a good used shaft and I will replace it soon--my question is--Is this a weak point on this tractor? Do I need to give up the rototilling idea? Is there anything that could be put on the PTO to save the drive shaft from future problems like this? (like a shear pin)

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HAS

03-17-2008 17:11:45




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 Re: PTO drive shaft in reply to fred vaccaro, 03-17-2008 15:09:56  
You need to put a slip clutch on the PTO shaft. It'll slip a little when you hit something solid.



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fred vaccaro

03-17-2008 17:20:53




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 Re: PTO drive shaft in reply to HAS, 03-17-2008 17:11:45  
Where"s a good place to buy the slip clutch?



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Haas

03-17-2008 19:24:39




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 Re: PTO drive shaft in reply to fred vaccaro, 03-17-2008 17:33:49  
Yes, the slip clutch can seize up sitting unused. The manual for my tiller says to loosen the bolts in the clutch and free it up at the start of each season of use. Then readjust the tension. I've found the tension adjustment is not real critical. Just make sure the clutch is not slipping during normal operation, or the clutch will overheat.



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fred vaccaro

03-18-2008 10:52:05




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 Re: PTO drive shaft in reply to Haas, 03-17-2008 19:24:39  
hey--thanks for your help--anyone know or have specifics on the correct adjustment??

HAAS --it sounds like you may have a manual--is it a trial and error thing or do they say anything about torque values????


Thanks again guys!!



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Haas

03-18-2008 18:14:32




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 Re: PTO drive shaft in reply to fred vaccaro, 03-18-2008 10:52:05  
Can't seem to locate my manual. My slip clutch has 6 or 8 bolts with springs that adjust the tension. When I loosened it up, I've just tried to keep track of how much I loosened the bolts and then tighten back the same amount after I was sure it was freed up. I don't recall there being any torque value specified.



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K.B.-826

03-17-2008 18:45:03




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 Re: PTO drive shaft in reply to fred vaccaro, 03-17-2008 17:33:49  
Yes, a slip clutch can rust up. You'll probably need to take it apart and clean up the parts. Only problem is that you'll need to know how to adjust it properly when you put it back together. Set it too loose and it will slip, set it too tight and it will not slip when it should. Might need to find a manual or someone who knows about your tiller.



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