Re: IH Utility hydralic problems

Posted by K.B. on December 06, 2003 at 10:31:49 from (209.163.43.90):

In Reply to: IH Utility hydralic problems posted by Maury Baggett on December 06, 2003 at 05:53:21:

With that system, nine times out of ten the problem is in what they call the Saftey/Regulator valve. Like your 240, most IH tractors in the late '50's used a positve displacement pump and closed-center control valves. This means that the pump produces a constant flow of oil, and since the valves are closed-center, oil cannot flow through them when they are in neutral. To solve this problem, the Saftey/Regulator valve dumps the flow from the pump back to the reservior when the control valves are in neutral. If it sticks open, you don't get any oil to the control valves. You need to rebuild the Saftey/Regulator valve, which is very easy to do. This valve is located under the gas tank on my Farmall 240 Row-Crop. It has a square cover held on by four bolts. Remove the valve from the tractor. Remove two of the bolts that hold on the cover, and install longer bolts, because there is a heavy spring pushing against the cover. Remove the other two bolts, then carefully remove the long bolts you just installed. After you get the cover off, you'll see what looks like a small plug that you can remove with a flat screwdriver. Remove it and you will find that it is a screen. This is called the orfice screen. Get a new one from Case-IH. Replace the o-ring on the regulator valve piston, get a new cover gasket, replace any other o-rings that were disturbed while removing the valve, change hyd. fluid and filter, and you should be ready to go. I would highly reccomend that you get a Parts Manual, because it shows a very detailed exploded view of this valve. An I&T Service Manual might also show this valve.

Follow Ups:

• Re: Re: IH Utility hydralic problems Phil B. 17:05:06 03/01/04 (0)

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