3 Pt. Hydraulics Surging: John Deere Review  -- John Deere Tractors Discussion Forum and Review 3 Pt. Hydraulics Surging: John Deere Review -- John Deere Tractors Discussion Forum

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 02-19-2000, 00:00 Post: 12954
CHRIS



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 3 Pt. Hydraulics Surging

I have a JD 4200 4x4 with hydro trans. When you pick up the 3pt with an implement attached it doesnt want to sit there calmly, it wants to jump or surge about every 10 seconds. Has anyone had a problem with this or can someone tell me what might be wrong.






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 02-19-2000, 00:00 Post: 12955
bud in oh.



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 3-Pt.-Hydraulics-Surging

Chris:I have a 4600 and it has done the same as your 4200 since day one. My brother was a Deere mechanic for 19 years and he said it is caused by a bad check valve or o-ring inside the rearend. I had a 970 that never leaked until I changed the hyd.fluid,never did figure that one out.






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 02-19-2000, 00:00 Post: 12969
Jon Eich



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 3-Pt.-Hydraulics-Surging

Chris, I have a Kubota but I don't believe it matters when it comes to 3pt operation with position control. Question, do you raise the implement all the way? IE, lever all the way up? A tractor with position control will tend to do what you describe when it is lifted all the way. The implement must be carried at one of the indexed positions other than all the way up, for lack of a better description. You can pull the lever all the way up just to get the implement up fast but you should carry it at a slightly lower position. This is normal for position control equiped tractors. At least it is on mine.






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 02-19-2000, 00:00 Post: 12971
CHRIS



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 3-Pt.-Hydraulics-Surging

My tractor will surge or lets call it a hiccup at any position with the 3pt. or at any engine rpm. It just seems to me that the system builds pressure to a point where something has to release and it jerks.






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 02-19-2000, 00:00 Post: 12972
CHRIS



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 3-Pt.-Hydraulics-Surging

My tractor will surge or lets call it a hiccup at any position with the 3pt. or at any engine rpm. It just seems to me that the system builds pressure to a point where something has to release and it jerks.






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 02-21-2000, 00:00 Post: 13002
Bird Senter

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 3-Pt.-Hydraulics-Surging

Jon, this is a new one to me. I have a Kubota (B2710) with position control and I've always carried implements with the lever pulled all the way back and have never had that surging.






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 02-21-2000, 00:00 Post: 13005
Jon Eich



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 3-Pt.-Hydraulics-Surging

This is one of the things Steve Carver warned me about when I got my tractor. He mentioned it specifically so that I would not have any unnecessary concerns. I have not experienced it with my 2710 however but with other tractors.






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 02-21-2000, 00:00 Post: 13016
Murf

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 3-Pt.-Hydraulics-Surging

Chris, it sounds like you have a less than perfect pressure release valve on the your 3pth. It may just be that there is some debris there, or that there has been in the past which has scored the valve bore and is causing a leak through the valve. the easiest way to check is to raise the 3pth to full height with some weight on it and shut down the machine that way, measure to a known point on the implement, come back later (a day or two) and measure again to see if it is lowering itself. All things being ok, it should be right where you left it. If not start by changing just the filter, then a few (10-20?) hours later change the fluid & filter. This should get any foreign particles out of the system and (hopefully) fix the problem.






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 02-21-2000, 00:00 Post: 13028
CHRIS



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 3-Pt.-Hydraulics-Surging

Murf, A day or two later, how about 20 minutes. If I raise the 3pt fully, in 20 minutes its on the ground. So you believe it has something to do with the filter or the valve?






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 02-21-2000, 00:00 Post: 13034
Bird Senter

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Chris, I'm not enough mechanic to diagnose your problem; Murf probably knows more about it, but if you leave an implement raised and it lowers to the ground in 20 minutes, I can guarantee you that is not normal. You definitely have something leaking down.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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Bird Senter 3 | bud in oh. 1 | CHRIS 5 | DAVE SIMPSON 1 | Jon Eich 2 | Murf 2 | Roger L. 1 |




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