JD 630 Disc problem

peanut80 · Aug 19, 2013

I have a 22" JD 630 disc with hydraulic down pressure on the wings. While discing recently the wing on one side was working properly while the other side was pushing too hard. There are no visible oil leaks and the oil lines on the cylinders are hooked in parallel. Is this a control valve problem or cylinder leaking by?

Tx Jim · Aug 20, 2013

Please clarify "pushing too hard". If cylinders are attached in parallel then I think that would rule out the valve being faulty.

Mike Aylward · Aug 20, 2013

I also have a 630 disk. It sounds as though you have a leaking cylinder. Both should respond in the same way. Mike

peanut80 · Aug 20, 2013

The valve allows you to add down pressure to the wings so they will cut in hard ground. I am wondering if there is an internal leak in the cylinder allowing one side to not hold as much down pressure as the other and if there is a way to test this.

Mike Aylward · Aug 21, 2013

Yes, you can test this. The wing cylinders have two ports. Open up the return port and then fully open your adjusting valve to apply full down pressure. There should be no leakage out of a healthy cylinder. Mike

JD 630 Disc problem

peanut80

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Tx Jim

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Mike Aylward

Well-known Member

peanut80

New User

Mike Aylward

Well-known Member

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