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According to the TM I looked at it only has a header tank above the radiator with a hose off of the neck the pressure cap goes in. Found in Tm9-2320-303-24P.

aleigh: Found that the check balls in the cab cylinder was sticking. Removed and discarded. The only reason they are there is in case a hose breaks so the cab locks in the up position. It apparently has to have some residual pressure to keep the ball un seated when the cab is lowered. I checked...

Well got the cab to come down. Think I have a problem with the pilot operated pressure relief valve in the valve body. Had some air in the system bled it but had to work the function knob back and forth and then with the pump running it decided to trip the pressure operated check for the...

Fluid checks OK.

Found 2 ball and spring check valves, 2 identical cartridge direct acting check valves and 1 longer check valve that appears to be a pilot operated check valve. On the hydraulic schematic they are all shown as ball type checks. Does any one have a pictorial of the passages in the valve body ...

Had valve all apart today. Found no foreign material, no plugged orifices and no obviously damaged o-rings. Does cylinder have to have residual pressure to unlock? If so is that pressure generated by the orifices in the cylinder shown on the print? What unlocks the check balls in the...

Starts pumping normal, then almost stalls out. Acts like return isn't working. Get very little return from return line to air pump.

Cab and spare hydraulics act like there is a restriction in the valve body on all lift and lower functions. Acts like it builds pressure but the return through the valve body to the air-hydraulic pump is blocked in the valve body. The valve assembly is the one from Parker-Hanifin. The vehicle...