(quoted from post at 10:02:28 11/10/17)
(reply to post at 08:45:15 11/10/17)
the two port system.. you dont really need a separate return.. Using the open center to return to the under seat plate will work fine..
good points.. you can raise both loader and 3 pt at same time with the two port system, all though it might be a bit slower due to combined weight...
vary rarely do you need the third return line.
if.....you dont use the hvxxxx plate and just tap the factory top plate with one pressure line,,,, then you need the return the fluid somehow, and the line to the fill plug is then used...
And.. as others have pointed out.. there is a second type of hvxxxx plate that give a pressure only port as well as the in and out port so you can do both types of taps.. with the pressure only port.. you must use a closed center type valve to preserve the pressure for you 3 pt...if your not using the loader.
Again, the lower of the two safety valve settings will be the one to break open first, so you should have it set at the same as the hydraulic pump setting or slightly higher,, to preserve the rated pressure....