Hydralic problems on a 9n??? Need HELP

I had a similar problem. What I found was the fork that controls the inlet/exhaust valve on the pump had come off. The arms would go up with the control down. My weight would drive the arms down with the level up. I took off both inspection plates and (naturally, it was cold out) from behind, I reached down and put the fork back where it belonged. I had the cover off to replace the piston with a NAA. Apparently didn't have it quite right when I put it back together.

If this isn't it, dropping the pump and rebuilding is like changing a water pump on an old car. not much to it, once you get to it. But you have to pull the PTO shaft, drain the oil, remove three or four hundred bolts and that's it.

Good luck.

Bill

I had a similar problem. What I found was the fork that controls the inlet/exhaust valve on the pump had come off. The arms would go up with the control down. My weight would drive the arms down with the level up. I took off both inspection plates and (naturally, it was cold out) from behind, I reached down and put the fork back where it belonged. I had the cover off to replace the piston with a NAA. Apparently didn't have it quite right when I put it back together.

If this isn't it, dropping the pump and rebuilding is like changing a water pump on an old car. not much to it, once you get to it. But you have to pull the PTO shaft, drain the oil, remove three or four hundred bolts and that's it.

Good luck.

Bill

Sounds like you may have water in Hyd. Oil. If you can, get the tractor in warm place over night, so any ice can melt. Drain Hyd. Oil, (Three drain plugs) remove the small plug, (near the rear axle) first. then the other two big ones. Ford/N/H dealer get number 134. Takes five gallons..... .Good Luck