Ferguson hydraulic problem

[smurl]

Using my 52 to20 spreading gravel the other day and box blade went up and won't go down. Always has worked fine for bushogging and whatever I need. Hydro oil got some water in it. Its a yellow color so I unscrewed drain plug. Almost out the plug shot out in bucket like a bullet. The box blade was up but when drain plug shot out box blade dropped. Oil definetly needs changing but is there anything else. Also noticed up down lever felt like no pressure on it. I use tractor a lot and hope there's an easy fix

 

[J_J]

Down lever only releases fluid to reservoir/tank.

Your tank should not have pressure in it.

There is a vent somewhere just for that purpose.