rebuilt valve.. when i took off cap ,spring and washers feel out..no snap ring...removed plunger, piston ,dont know tecnical name..had two orings in middle of plunger...found some alittle tight,but got together...put snap ring and spring back together...valve feels good now...when i drained oil it was milky looking.i have already changed oil not to long ago..been setting up a long time until 6 months ago..the tractor.......anyways filled back up and run and test front and rear hydralics,works...checked oil and milkly again,i drained it and it was warm,turned tractor on and moved fr. and rear hydro and turn off...blow out a little more oil... filled back up , looked cleaner when full and then i moved fr, and rear hydro an could see the milk cumming back....WHATS going on....THANKS YALL........dewy