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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

PTO adjustment 1550??????

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05-21-2005 16:50:35

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Well Ive removed 18 shims(6 per section)and nothing seems to have changed.If I remove more than that the clutch is activated and wont move without turning the PTO when I tighten down all 3 sections.The PTO lever is still sloppy,I have to hold it in place too turn PTO.
Any suggestions??
Thanks
Stan

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Texas Denny

05-22-2005 07:18:30

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Re: PTO adjustment 1550?????? in reply to SJ, 05-21-2005 16:50:35

Are you saying that all of the bushings associated with the lever are loose to missing? I assumed from your previous post that the handle was loose. If the rotating part of the handle is not tight in the case, you won't be able to put pressure on the clutch. If this is the case, I'd try to get the shaft snug with bushings. If they are worn that bad, maybe the whole mechanisms is worn out. Maybe you could send me some pictures.

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05-22-2005 15:06:48

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Re: PTO adjustment 1550?????? in reply to Texas Denny, 05-22-2005 07:18:30

I think the lever is fine.Its the mechanism behind the PTO cover that seems hung up.But when I loosen shim bolts the part that actuates clutches slides back and forth fine. Tighen em back up and theres hardly no motion at all in clutch plate actuater.Should there be any lubrication on the round hollow shaft that the mechanism slides back and forth on?

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J. Schwiebert

05-24-2005 17:17:26

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Re: PTO adjustment 1550?????? in reply to SJ, 05-22-2005 15:06:48

I think the adjustment was too tight to start with and would not let you go to the over-center position. Send me an e-mail and I will walk you through it. J.

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Texas Denny

05-23-2005 06:58:15

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Re: PTO adjustment 1550?????? in reply to SJ, 05-22-2005 15:06:48

There is only so much advice I can give when I've never had one of these apart or seen pictures. Usually the clutch linkage and the shaft you describe should be lubricated.

I'm basing most of my thoughts and suggestions on the Oliver 77 that I have. I think that Oliver used the same plan on all tractors after the 77, 88 design as it was just about the best ever. This is a shaft within a shaft design. One shaft is splined and connects directly from the center of the crankshaft to the live power clutch in the rear. The second shaft is really a tube that goes over the first shaft. It is connect to the clutch disk and provides power to the transmission.

The Live power clutch is an over center clutch. A throw out bearing pushes on the clutch fingers until they snap "over center" and stay engaged. The throw out bearing is designed so that it can pull these fingers back over center for disengagement. The linkage and throw out bearing do not do anything when the PTO is in use or when not in use. The linkage is only useful for changing from engage to dis-engage and back again. If the clutch won't stay engaged, it is a clutch problem - not a linkage problem unless the linkage is unable to push the fingers over center.

You could respond via email by double clicking on my name.

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