Yes something is amiss , that 360 psi straight out of the charge pump is totally baffling, they only put out 150 psi new (see the pic of the manual I included in my last post here) did you hook it up as shown ? I don't know how the charge pump is pushing this much pressure.
I checked the pressures. The charge pressure is 360 psi at WOT. The implement pressure is 560 psi at WOT. Can any conclusions be drawn from this info? Thanks.
Yes the pump plumbs to the PS first , does the PS function? Is it leaking?
I checked the hydro line routing and I see that one of the lines goes from the hydro to the valve body through the power steering cylinder. I wonder if my lack of down pressure is caused by an internal leak in the power steering cylinder? Any opinions on this theory?
The PS this style can freeze up (rust) when they set long term especially exposed to the weather. These usually freeze up in the center position because of the design using an internal spring that returns it to the neutral position. Remove the outer boot where the drag link attaches to the thru bolt on the power steering unit by removing the thru bolt and sliding the boot forward. You will see the sleeve that goes thru the spool that actuates the unit ,you need to drop a roll pin thru the sleeve and see if you can move the spool for or aft slightly like 1/4" + if it doesn't move it's frozen you still stroke the piston because the spool is centered in the valve and allows flow you're just not getting any flow to the cylinder allowing it to function. If it moves and the unit doesn't leak is should be all right .If the internal o-rings were bad it would push fluid out the small breathers on the valve and you would notice a leak. If your getting 560 psi at the hydraulic valve body for the lift and remotes you are in tolerance according to the manual and I believe indicates flow thru the PS and that your valve body is okay ( they are repairable as well)
Check your gauge on that 360 psi measurement or test it again that pressure straight out of the pump is confusing to me.