Hydraulic problems

[JMJ Farms]

This may be a stupid question. But so be it, bc I don’t know the answer. Have a JD 6115D. Far from the best tractor JD ever built. I also have a JD 210 harrow, and an old IH 12ft harrow. Both hydraulic lift. If you pull the lever on the tractor too hard(fast) the harrow cylinder will lock up. You can then ease it down a little, and then ease it up and it will pick up like it’s supposed to. You can swap the hoses and it will do the same thing. Sometimes it does it while raising, sometimes when lowering. Both harrows do this. Seems to be worse as the oil heats up. They also do the same thing with my JD 5510 tractor. The harrows have not always done this with these tractors. Used to raise and lower fast like they were supposed to. Have also had the same problem, though not as bad, with two different grain drills. Never had an issue with my 4430. So... is the problem in the hydraulic system in the tractors, or the implements? I want to fix it bc it’s a PITA.

 

[YoungAngusCattle]

Is there any other hydraulic problems with other implements you hook up to those tractors?

 

[jltrent]

You might try another harrow cylinder as you said it did the samething with both tractors. You said you tried different hoses, so that leaves the cylinder. I am sure you have checked, but is the hydraulic level correct in the tractors and the hydraulic oil filters been changed in the last 600 hrs.?

 

[YoungAngusCattle]

If you wanna be cheap like me you could get a cylinder rebuild kit and rebuild it and see if maybe you got a bypass plugged up or something. I know its old but the IH dealer had a cylinder rebuild kit for a wing cylinder on my old ass Woods batwing shredder.

 

[Silver]

You might try slowing your hydraulics down at the remotes (I assume JD has a dial of some sort for this) and see if that changes anything.

 

[JMJ Farms]

Is there any other hydraulic problems with other implements you hook up to those tractors?

Don’t use anything else with hydraulics besides the harrows and drills, other than the hay processor. Processor works fine. Drills do the same thing as the harrows. I’m at a loss.

 

[JMJ Farms]

You might try another harrow cylinder as you said it did the samething with both tractors. You said you tried different hoses, so that leaves the cylinder. I am sure you have checked, but is the hydraulic level correct in the tractors and the hydraulic oil filters been changed in the last 600 hrs.?

Hydraulic level is good. Filters have been changed. I haven’t changed the hoses. Just swapped the existing hoses from top remote to bottom remote and also from #1 to #2. Could be hoses or cylinders. But I have issues with both harrows and both drills. Especially on the 6115D tractor. I am leaning towards it being something to do with how the hydraulic system works on that tractor but it doesn’t make sense.

 

[JMJ Farms]

You might try slowing your hydraulics down at the remotes (I assume JD has a dial of some sort for this) and see if that changes anything.

Most of them do have an adjustment Silver. But this tractor doesn’t. It’s the cheaper version. Maybe I borrow a tractor from a neighbor and see if the issue persists. May be the only way to isolate the issue. I wonder if there is some trash somewhere in the tractor system. Maybe I should change fluid and filters and recheck screens and such.

 

[YoungAngusCattle]

Is there any other hydraulic problems with other implements you hook up to those tractors?

Don’t use anything else with hydraulics besides the harrows and drills, other than the hay processor. Processor works fine. Drills do the same thing as the harrows. I’m at a loss.

I have a Frontier 10 wheel rake that has 1 cylinder in the middle to fold up both wings and it gets bound up sometimes. Is there something that the cylinder moves that has metal on metal contact to raise it that could bind up? If so I would try to get some grease in between it.

 

[JMJ Farms]

Is there any other hydraulic problems with other implements you hook up to those tractors?

Don’t use anything else with hydraulics besides the harrows and drills, other than the hay processor. Processor works fine. Drills do the same thing as the harrows. I’m at a loss.

I have a Frontier 10 wheel rake that has 1 cylinder in the middle to fold up both wings and it gets bound up sometimes. Is there something that the cylinder moves that has metal on metal contact to raise it that could bind up? If so I would try to get some grease in between it.

Nope. It’s not binding. It has something to do with the hydraulics.

 

[1982vett]

From what I can find in the parts catalog it does have a rate of drop valve. Number 2 on the hydraulic control valve assembly.

https://partscatalog.deere.com/jdrc/sidebyside/equipment/73651/referrer/navigation/pgId/236707196

Haven’t found how to adjust it just yet but I’d guess an operators manual would explain.

 

[1982vett]

My bad....I’m thinking 3 point not hydraulics....however it seems their should be an adjustment for that too.

http://manuals.deere.com/omview/OMSU20196_19/OUMX005_0002936_19_11FEB08_1.htm

However it does say “if equipped”

 

[Rydero]

Sounds to me like a possible problem with hydraulic quick couplers. Fairly rare but I've seen it a few times try changing the male ends on one implement if the problem goes away do the other.

 

[JMJ Farms]

Sounds to me like a possible problem with hydraulic quick couplers. Fairly rare but I've seen it a few times try changing the male ends on one implement if the problem goes away do the other.

The more I ask around and the more I analyze it myself I’m thinking, and hoping, this is the problem. I’m gonna replace two on the tractor. $60/each. And maybe this will be the culprit.

 

[hurleyjd]

Cylinders could be leaking on the ram and you have fluid on both sides in the ram. Also hoses can break down internally and have a flap that makes them act like a valve that restricts flow. First I would buy and install new hoses.