i have got a 1872 cub suuper, i think. it has hydro steering, hydro deck lift and hydro rear end. i had to put a charge pump on it, now it moves, lift raises and everything, but it blow hydro fluid out of the dipstick tube. would air do this? if so how do i bleed it out? and what kind of fluid does it take? i have regular tractor hydro fluid in it, only about 3 cups, that filled it up. didnt run it maybe 20 minutes at idle. any help would be appreciated. brian