Question about John Deere 420,1020,2010,2020,2510,2520 Tractor Float

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When disk is raised the center section lower by itself it is not the tractor valves because the problem stays with the disk. I have replaced one wing cylinder with a standard cross 4x8 and the other origanal I rebult is a 4x8 cessna I have also replaced one of the main frame cylinder which had been sustituted with a new part number from deere and the prblem still remains. I have onemore to change but i'm trying to determin why the problem exists

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What size disk? I take it that it is probably 20 ft or so? Because u said one of the wings. Ok so it has two cylinders that pik up the disk? On the main frame.

One of them changed. And Im sure they are hooked up right? Doe's it still drop when the lines are unplugged from the tractor? If it doe's and the cylinders are hooked up right. Then it is one or both of the cylinders bypassing around the piston. When one of them bypasses then the oil pressure between the two would eqal out on both of them because they are hooked up together.

And shut the tractor off and you should be able to hear where it is bypassing. Might need someone to listen if it goes down fast.

Posted on Oct 02, 2010

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