My Findings on Actual Hydraulic Output PSI, Maybe Low?

I'm not sure raising the psi will help that much but maybe some. As a pump wears out it not only produces less volume but it also isn't as tight so you also have less pressure. The less volume = less psi flowing down the same size pipe(basic law of physics).

I think you still may have a relief valve and/or check ball problem with the flow divider and the pilot valve attached to it if you are also having some steering problems.

Mine has a case 33 backhoe & a IH 3000 loader so it has the two largest pumps you can get, the 17 and the 9. From what I see in the parts manuals, the larger pumps are interchangeable without having to put in bigger lines or valves, etc. Mine also uses the standard hyd filter and not the high capacity filter which is about 1 1/4" thicker. A high cap filter would not fit into the housing. New tractors and even some bobcats have fairly high gpm pumps. I don't see any drawbacks with a 17gpm pump since the system was designed to use them.

I have been told that Hy Capacity has a 2300 psi valve as PN HH396729 and a 2500 psi valve as PN HH543976. Much less than CIH. Hope this helps.

By the way, the relief valve is almost hidden on the lower side of the transfer block that the remote valves bolt to.

did you top off the hydraulic system reservoir after installing the loader and cycling it and the bucket a few times? there is a lot of oil required to fill the space of the hoses and empty cylinders. even on a double acting cylinder, as they are full of air when new.

low oil could give low pressure and noises and loss of powersteering.

karl f

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