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Minneapolis Moline Tractors Discussion Forum
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pto clutch question

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chuckb

05-10-2008 17:58:18




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i have a 1964 jet star 3. When i engage the pto it takes very little effort.and when it does engage it wont turn my bush hog fast enough to cut. I looked at my I&T and and did what it said do,which was to push in the pin and turn the big nut until it clicked and recheck.it feels like it has a pretty good snap now.The book calls for about 65 lbs so i put my fish scale on the lever and it engaged at about 45 lbs.question is,do i go ahead and replace the 5 clutch disk while theyre exposed or put everything back together?

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MMDEL

05-11-2008 08:30:44




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 Re: pto clutch question in reply to chuckb, 05-10-2008 17:58:18  
Fish scale should be OK, unless you don't catch fish that big and your scale doesn't go that high. The MM shop manuals show using a common spring scale to check the lb.s of force on different applications. Take your measurement at the very top of the lever.
MMDEL



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chuckb

05-10-2008 19:38:59




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 Re: pto clutch question in reply to chuckb, 05-10-2008 17:58:18  
sounds like what you guys are saying is reguardless of the disk thickness i still should be able to adjust the snap and put it back together.Is there a better way for me to check the snap other than a fish scale? 65 lbs seems like it will be very hard to engage.also is there a certain thickness the disk should be?



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MMDEL

05-10-2008 19:22:46




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 Re: pto clutch question in reply to chuckb, 05-10-2008 17:58:18  
You got a whole lot more taking apart to do if you want to replace clutch plates. Which includes taking the hyd pump off and pulling the PTO drive out the rear. Better give it another notch on the adjustment. Get it up to specs. If it's not tight enough and it keeps slipping a little, maybe not enough that you notice it. It will warp the plates, then you got more problems.
MMDEL



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Curt Cooke

05-10-2008 19:03:02




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 Re: pto clutch question in reply to chuckb, 05-10-2008 17:58:18  
I suppose I'm a piker but I'd put it to the test as is and if it fails again, then I'd replace the discs. My guess is that you'll be OK the way it is.



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