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Tractor Talk Discussion Forum

too much oil pressure JD 3010

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heenk

11-11-2007 11:44:16




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It seems that the tractor lugs because of oil pressure (resistance) build up. But when using the steering or frontend loader the engine runs smoother and as soon as neither is being operated the engine lugs again also the oil line that feeds the frontendloader gets warm quite quickly.How can this be resolved is there a setscrew or something else?




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DLM

11-11-2007 15:58:51




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 Re: too much oil pressure JD 3010 in reply to heenk, 11-11-2007 11:44:16  
What you have is a closed center hyd. system. There is a high pres. leak in the system could be in the steering valve, brake valve diff. lock valve, selective control valve ,or the loader valve.A small internal leak in any one of these will keep the pump in stroke and put a load on the eng.If the loader valve has a power beyond plug in it the seal on the end of the plug could be blowen Or if the valve has a system relief valve in it the setting could be to low or the O rings that seal the relief in the valve housing are blowen. Somewhere you have a internal high pres leak. Don

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heenk

11-14-2007 19:03:42




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 Re: too much oil pressure JD 3010 in reply to DLM, 11-11-2007 15:58:51  
Your answere is correct I found the problem it's in the controls for the frontendloader.
Thanks for the help.



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Bob

11-11-2007 20:56:50




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 Defective or leaking loader valve... in reply to DLM, 11-11-2007 15:58:51  

He says the line to the loader heats up right away, so that's where the leak is... they MAY have an open-center valve on the loader, dump[ing high pressure oil at all times, or the valve may be defective.

If the loader is NOT being operated, there should be NO oil flow TO or FROM the loader valve, and NO heating of that line.



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heenk

11-14-2007 19:05:45




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 Re: Defective or leaking loader valve... in reply to Bob, 11-11-2007 20:56:50  
Thanks Bob after the replies I was able to locate the problem and it's in the controls for the frontendloader.



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