Re: IH 240U Hydraulics Question

Posted by K.B.-826 on August 20, 2005 at 19:23:13 from (209.163.43.69):

In Reply to: Re: IH 240U Hydraulics Question posted by Al L. in Wisc. on August 20, 2005 at 16:01:52:

Al, the problem with your 240 is in the regulator/saftey valve. It is located in the bank of hydraulic valves under/ahead of the fuel tank. It's the one with no linkage attached to it. I belive it can be repaired without removing it, but removal is pretty simple, I took mine all the way out so I could give it a good cleaning. Only problem doing it this way is that you disturb the o-rings located between the hydraulic valves and need to replace them all, 29 of them if I remember right, if your tractor has three control valves. Repair of the regulator/saftey valve is very simple. Remove the end cover, which is held on by four bolts. There's a heavy spring pushing against this cover, so remove two bolts in opposite corners, replace them with bolts that are about an inch longer, and then slowly loosen the other two bolts. Once you get the cover off, you'll see two piston bores. What appears to be a screw head will be located between the two bores. Screw it out, and you'll find that it is the orifice screen. It is probably plugged, so get a new one from your Case-IH dealer. Remove the two pistons from their bores and clean them with very fine emery cloth. One or both pistons have an o-ring, which will need to be replaced. Replace the cover gasket, and reassemble the valve. Should now be back to normal.

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