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Farmall & IHC Tractors Discussion Board

Re: 350 utility hydraulic relief valve


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Posted by bc on April 08, 2009 at 17:31:27 from (71.158.222.135):

In Reply to: 350 utility hydraulic relief valve posted by DYNA490 on April 08, 2009 at 17:12:28:

Don't know for sure about the 350 but my 2606 industrial does in the front right corner next to the block and relief that is on the outside. That is the rockshaft housing and mine does not have the rockshaft nor the other stuff associated with the rockshaft. Mine has a drain tube in the back that sticks up about 4" and maintains about 4 inches of fluid in there. The tube is welded in from the bottom and won't screw out (I tried and bent it). There is a 3" long plug at the front towards the left. I screwed it out so it would drain into the rear end but still leaves about an inch of fluid in the bottom. Mine had about a half inch of sludge built up in the bottom over the years.

Don't know what problem you are having but I found a piece of broken metal/spring holding the ball open in mine. Put in the vise to depress the ball and the broken piece fell back inside the relief valve. So far it works and hasn't plugged open again.

You can remove the seat and the top plate. Just be careful not to ruin the gasket. I opened mine a few times and used the original gasket. Nothing in there is high psi so you can run it and watch the fluid flow. If the relief valve is stuck like mine it will flow out of it. Inside the casting is some plumbing and maybe another inlet from the front.


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