Loader issues

[Scrub868]

Hello all--I have a new to me Mitsubishi MT2501FD that I can't find any information on. My problem is the FEL will not raise unless the 3ph is in the full up position. I assume the control valve is bad as well because with the 3ph up moving the spool either direction raises the loader. The loader will not lower until the 3ph is also lowered. The roll back does not work until the 3ph is lowered.

Front mounted pump runs to a housing (diverter or proportional valve????) hydraulic hose out of the top to loader control valve hose out the bottom to the 3ph. The return hose runs to a similar but smaller housing with a hose out of it to the rearend--which I assume is the oil resubmit since the auction hose for the pump comes from close location.

I'm guessing this is an open center system???

Any help appreciated!!! Thanks

 

[Tx Jim]

Sounds as if loader valve is teed into hyd system rather than attached to tractor hyd system in "series". Loader valve should be connected between pump & 3pt valve so oil has to run through loader valve to get to 3pt valve.