i was wondering how you check hydro charge pressure and reverse and foward high pressure on a 8820 titan 2 with a eaton hydro. in the book it just shows a different hydro it starts with a s and i cant rember the rest of it. is the place to check the foward and reverse the plugs on the bottom of the hydro with it looks like 1/2" allen socket plugs? any help would be great!