Farm Equipment - Pressure regulator 6080

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Pressure regulator 6080

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=20835
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Topic: Pressure regulator 6080

Posted By: rowtooe
Subject: Pressure regulator 6080
Date Posted: 15 Nov 2010 at 2:24pm

Has anyone ever tried to add spacers to the hydraulic pump relief valve to try and raise the operating pressure of the steering.(I have an early model 6080,which has the valve incorporated into the pump itself.) It seems to me that the pump has to be removed in order to do this.. Seems as though the opening is on the back side of the pump, next to the block.. I have tested the pressure down at the cyl on the axle .On one side I have 1250 PSI. on the other I have 1350 PSI. I am having trouble turning one way.. The book calls for the relief valve to open up between 1400 and 1600. Or do I have a problem in my steering valve

Replies:

Posted By: DrAllis
Date Posted: 15 Nov 2010 at 7:51pm

I don't think that's your problem....that far away from the pump there will be some reduction in pressure. If it takes that much pressure to turn the front wheels without a loader on it....how much pressure will it take with a loader in the mud?? I had a 7000 one time that had several holes inside the orbitrol that were plugged with rubber and teflon bits and pieces from an apparent hyd cylinder failure from an implement that went thru the hyd pump and got stuck in the orbitrol. If you are sure the front spindles are well greased and not causing excessive drag, I'd look inside the orbitrol sleeves for blockage of some kind. If you haven't ever had one apart, be careful, because if you reassemble it out of "time", the steering wheel will spin when you start the engine and break your arm.

Posted By: rowtooe
Date Posted: 15 Nov 2010 at 8:26pm

When you say the orbital sleeve, You mean inside the steering control valve? You think that it might just have to be cleaned? I have a John Deere skidder that spins the steering wheel when you start it..It is dangerous..