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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Problem with 550 pto clutch

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colinsgrandpa

09-18-2006 13:15:48




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I have a 1971 oliver 550 and during brushhogging, I disengaged the pto lever, it did not stop in the normal position but came back much further than normal. When I took off the top section of the clutch housing I noticed the pto clutch has come out of the power hub that it usually fits in. I cannot get this to go back in by using the lever and don't want to force it. It seems like something is stuck on the pto shaft and holding this assembly appart. Any suggestions on what I can look for? Also, the seal is leaking on the back of the pto shaft along with the wheel seals. Is this a big job in replacing these seals or should I have a pro do it? I am fairly mechanical if pointed in the right direction.
Thanks,
colinsgrandpa

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Kevin Roberson

09-25-2006 12:50:56




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 Re: Problem with 550 pto clutch in reply to colinsgrandpa, 09-18-2006 13:15:48  
My 1975 550 has just had the exact same problem. I did not see this post before I sent mine. Have you had any luck with getting the set screw back in the hole? Thanks,

Kevin R.



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jake4

09-20-2006 17:48:43




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 Re: Problem with 550 pto clutch in reply to colinsgrandpa, 09-18-2006 13:15:48  
To replace the "O" ring seal the tractor must be split and the hub remover using a spanner made of 2" black pipe. The PTO shaft has two versions one which has cut a grove cut so being prescise is not important, the other has a recess cut for the dog head set srew. The hardest part is lining up the hole. The set screws are 2pc the long screw 3/8 x 1/2 with a dog head, the locking screw is 3/8 x 1/4. Replacing the PTO plates once apart you get a clear idea how it works.

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Farmritch

09-19-2006 19:44:47




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 Re: Problem with 550 pto clutch in reply to colinsgrandpa, 09-18-2006 13:15:48  
If you have small hands can probably do it but who knows what is missing that caused it I had this problem happen to me 13 years ago.
I split the tractor and before I was done rebuilt the engine & both Clutches there is one tool you will have to make or borrow it's a socket like tool I've heard guys making them out of Black Pipe. Like inch and a half I think, it's a socket like tool you have to make with ears like a spanner.
I also had the main shaft (it's almost 3 feet long and splined) come loose from the output ( it's the female part that the PTO pig fits in) come apart as there is a 1/4 sping pin that holds it together. you can pull the whole shaft from the rear but it's a booger to put back and align the clutch basket clutches and plates
The leakage is no biggie a seal,felt and you're good Not sure about the axle leaks have not had the pleasure as yet. Sounds like an expensive fix if you take to a shop
Maybe you might want to sell that mechanical nightmare (anywhere near Northern Indiana?) LOL

Farmritch

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awanabefarmer

09-19-2006 17:57:58




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 Re: Problem with 550 pto clutch in reply to colinsgrandpa, 09-18-2006 13:15:48  
In order to fix the PTO clutch you will have to split the tractor unless you are very talented. At lest thats what you have to do with the 1959 model 550. There is a preasure screw in there that probably came loose. Splitting is not to difficult you then have to reline the plates, but first you need to make sure that the pressure screw is in line with a small hole if not it will do the something all over.

Have fun

Awanabefarmer

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colinsgrandpa

09-20-2006 09:54:32




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 Re: Problem with 550 pto clutch in reply to awanabefarmer, 09-19-2006 17:57:58  
Thanks for the replys and good advice. One more question I have is where is the presure screw located? Is it in the clutch housing or behind the pto clutch?
Thanks again for the respones.
John



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awanabefarmer

09-20-2006 10:13:39




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 Re: Problem with 550 pto clutch in reply to colinsgrandpa, 09-20-2006 09:54:32  
The pressure screw is under the PTO spider gear. That then lines up with a hole on the PTO spline. You may be able to see it by looking through the inspection port on the under side of the housing.



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colinsgrandpa

09-23-2006 09:38:05




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 Re: Problem with 550 pto clutch in reply to awanabefarmer, 09-20-2006 10:13:39  
Thanks again, I think I will be able to fix it wiht your advice. I am going to try this afternoon.



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