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Welcome,
Your video does not play, and I'm not downloading it from your link...sorry.

We don't know what machine you have, but I'll guess a 1-series. Here are a few thread with simular issues. There was a know problem with these for awhile.

https://www.greentractortalk.com/forums/sub-compact-utility-tractors-scut/13865-pulsing-hydro.html

https://www.greentractortalk.com/forums/sub-compact-utility-tractors-scut/15098-help-3pt-hitch-pulsing.html

https://www.greentractortalk.com/forums/sub-compact-utility-tractors-scut/7190-rockshaft-inspection-recall-1026r.html
 

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I watched his video on my iPad, you just have to wait several minutes for it to load up. Looks like a 1 series, has a 3pt scoup/bucket on back. The tractor is idling, nobody sitting on tractor. The 3pt is raised up and then all of the sudden, it will maybe drop an inch and bounce/hunt up and down for a second and then it will stop doing it & then 5 seconds later, it will do it again. I’ve never seen anything like it before.
 
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Sounds link the rockshaft feed back linkage is out of adjustment.
 

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what can I try to do to fix the problem

thanks
If you would reveal what brand/model tractor you have then it would be much easier to correctly answer your questions.

If RS piston seal is leaking more than likely the housing that raises 3 pt hitch arms will require removal from tractor for repairs.
 

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Discussion Starter #9
If you would reveal what brand/model tractor you have then it would be much easier to correctly answer your questions.

If RS piston seal is leaking more than likely the housing that raises 3 pt hitch arms will require removal from tractor for repairs.

Is a JD 1026 R year 2012
you are right

Thanks
 

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uploaded movie to youtube...

Nicola's movie in youtube:


It appears to be having a leak down then returning to a position.
 
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Nicola's movie in youtube:


It appears to be having a leak down then returning to a position.
Does the 3 point leak down with no weight on it? Does it leak down with the tractor turned off?

Try closing the rate of drop valve and see if it leaks down!
 

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Does the 3 point leak down with no weight on it? Does it leak down with the tractor turned off?

Try closing the rate of drop valve and see if it leaks down!

Hi Ray

yes, lose with the tractor switched off and with the release valve closed
 
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