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Re: Hydraulic problem


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Posted by Jon Hagen on September 20, 2007 at 17:10:14 from (12.175.230.36):

In Reply to: Re: Hydraulic problem posted by Bob on September 19, 2007 at 20:39:41:

Does your Steiger have the lovjoy type hyd pump coupler off the end of the crankshaft ?
If so you have a bad relief valve or a worn pump.
The relief should not open until 2000-2100 psi. Shiming may work, but take care not to shim it too much and leave the system without a working relief valve. You should also check that the steering priority valve is not stuck and bypassing oil through the steering. 3000 psi on your IH is too much, you have a non function relief valve, fix ASAP. A few years ago I bought a well used Steiger Panther KM325, always had little nusiance oil leaks in many places. during a rain delay I looked to fix most of those little oil seeps. we had broken a steel line and blown out two main hydraulic hosed during the 2 years I owned the machine. While looking the hydraulic system over we noticed that what appeared to be the pressure relief valve had the return hose disconnected and the valve capped !!!???
Did a look over of the machine to see if another relief valve had been added somewhere else, found nothing. We decided to plug the hyd system test guage into a remote and see what kind of pressure the thing was running. With the engine at slow idle, the test guage ran right up past 3500 psi on a 2000 psi system. Yikes,no wonder the thing had leaks all over!!! Only the fact that the hyd pump has 6000 hrs and is a bit worn saved us from twisting off or exploding a hydraulic componant.
We reconnected the relief valve and it cracks at 2100 psi then maintains right at 2000 psi. I have no idea what the heck the previous owner was trying to do, but I would like to smack him right in the nose with a fresh warm cow pie. And BTW, all the little oil seeps went away now that the relief valve is working again.


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