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Message: <blockquote data-quote="bremery" data-source="post: 26358" data-attributes="member: 1405">I picked up some fittings and a pressure gauge today to check the pressures at the pilot control pressure reducing manifold. I plumbed the gauge into the port where the hoses come in from the valve block. I found out the three main relief valves were set high, so I adjusted these to what the manual said to. The dozer blade, offset boom and turntable is set to 190 Bar, and the other functions are set to 210 bar (My hydraulic circuit diagram shows them all being 190 bar, which is a little different than what the procedure says). At full throttle and moving nothing I get about 300 psi. When I move a single function the pressure jumps up to what I set the relief at.I then moved the pressure gauge to port right at the pilot lines that go joysticks. I get little to no pressure at max engine rpm and no functions being operated. When I try a function the gauge will read 600-700 psi. The spec is 400 to 545 psi. This is a little high and I need to adjust this. I got it pretty close on my first attempt, but rain out of day light.I need to get a tee fitting to verify I am getting 500 or so psi to the spools. I also changed the hydraulic fluid and cleaned the in tank filter. It was pretty clean to begin with. I did not replace the main hydraulic filter as I got the wrong one from the parts store. I am getting the correct one tomorrow and will put that to see if that helps. After getting the fluid warm, the hoses get warm and the filter gets warm, but the return hose to the tank does not get warm. I am hoping my filter is clogged up.I believe my problem is  flow related, but I am running out of ideas. What about air in the system? Can that cause airlocks? Can it be bleed.Thanks for everyone's help so far.</blockquote>

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