I believe I have figured this out, but I will run it by the guru's. '51 8n, started giving me fits with a scraper bucket. I got stuck going downhill! it wouldn't break out and lift up....I have cleaned out the chambers previously when I put in the new PTO and have fresh ( and NOT contaminated oil). With my position control lever in the UP position, I Lower the touch control and the arms only come down to 16.5". If I put the position control in draught position the arms drop to 8". Upper stop is about 36". I ordered the upgraded Jubilee piston for the upper cover along with the gaskets. I think I messed up as I now believe I should have also ordered the cam pin and the overpressure valve ( the valve just because I'll have the cover off and why not since I'm in the neighborhood). Also since I'm in there, I wonder if I can get to the shaft pins that bolt thru the axle trumpet.
I haven't put a gauge on front of the pump yet, or done the full inspection/diagnosis as the gaskets wont be here for another hour or so. The pump is working the arms go up and down. It will run the back blade fine, with the control lever in either position. At idle with the arms up if I put my weight on the lift arms I can feel a slight bump, bump, bump like psi is fluctuating. It will NOT hold an implement up when clutch is pushed in. The levers will slowly drop when the tractor is shut off. Which is why I bought the new piston and was going to make adjustments needed in the cover. Am I thinking in Close to the right direction? I'm going to order the pin and overpsi valve and whatever else happens when I open the top this afternoon.
I haven't put a gauge on front of the pump yet, or done the full inspection/diagnosis as the gaskets wont be here for another hour or so. The pump is working the arms go up and down. It will run the back blade fine, with the control lever in either position. At idle with the arms up if I put my weight on the lift arms I can feel a slight bump, bump, bump like psi is fluctuating. It will NOT hold an implement up when clutch is pushed in. The levers will slowly drop when the tractor is shut off. Which is why I bought the new piston and was going to make adjustments needed in the cover. Am I thinking in Close to the right direction? I'm going to order the pin and overpsi valve and whatever else happens when I open the top this afternoon.
