I posted a question a little while ago about using a double check valve vrs a counterbalance valve to stop oil from back feeding through the orbital and causing the steering wheel to spin when the valve was engaged.
I had installed one of Charles Quick’s valves on a case 2590 with simple open center steering and that was a problem. I wanted to used a check valve because they were cheaper and easier to get but I was worried it might change how the steering acted. Charles tried one with success and that gave me confidence to go ahead and get one even though it had a different pilot ratio than his did.
I am happy to report that the check valve completely solved the problem and did not change the way it steers at all.
This is the one I used
There appear to be cheaper options as well that should work.
I use it with second orbitrol. Tryed with charles Quick valve but we had to mount it in P line to orbitrol and then it does not work. For that valve we should use other P line.
Ive used some was error code that bric bric put up on 2 charles quick valves and ive not found it very successful. Seem to get alot of false disengages but i think its because the valve is very fast acting.
Ive tried the same code on a nh with eaton vickers valve that had a bad pressure sensor and the same code worked perfectly on that.
On the nh i had turn sensor set to 10 and was spot on. On a Charles’s quick valve i had it set to 75 and was still getting false disengages but with the counts this high the steering then needs to turn alot for it to disengage properly. A reed sensor mounted on the steering column shaft could be a better way
How you feed the valve?(from where comes P). I thougt when P is not P line to orbitrol this would be better for disengage.
In our mount (fendt 311 vario gen 4) we solved al last by installibg pressure sensor in circuit to disengage. We had to put valve on pressure line to orbitrol. All other hydraulics were electrically engaged.
Did you put your disengage sensor in the original LS line to the orbital as this could also work to disengage steering.
Fitting a reed sensor to the steering shaft would work but sometimes access to it on modern tractors might be a battle.
Ive just used fresh lines for the P R and LS but no reason the P and R lines could’ve be used off the original lines maybe
Tractor has open center hydraulics. We used a shuttlevalve between L and r before double piloted check valve, tractor has reactive steering.This works acceptable.
Glad to hear the check valves are working out.
I’ve put a guide to implementing my disengage code on this thread: Fight Detection in Software - #19 by CQuick
Try it out in your system and let me know how you get on
