Hydraulic lift

RobBruno · Apr 16, 2014

After reading several post about hydraulics on this site< I started to work on my 8N which has a non working system right now. I removed the dipstick side cover and ran the tried to raise the arms and see what would happen. I did not see any bubbles or fluid being agitated. I could just see the motion of the pump in the oil. I want to build my way up to replacing parts and have read about the relief valve. If the valve was stuck open or closed, would I see anything moving in the fluid? I drained the oil and had a bunch of water come out first. I am hoping I don't have a cracked pump cause of the very cold winter we had. On the relief valve, should it just be able to move freely or should it have a specific amount of spring pressure to be able to work? The linkage was all attached and the appeared to move without any problem. Any advice?

TheOldHokie · Apr 16, 2014

(quoted from post at 09:39:45 04/16/14) After reading several post about hydraulics on this site< I started to work on my 8N which has a non working system right now. I removed the dipstick side cover and ran the tried to raise the arms and see what would happen. I did not see any bubbles or fluid being agitated. I could just see the motion of the pump in the oil. I want to build my way up to replacing parts and have read about the relief valve. If the valve was stuck open or closed, would I see anything moving in the fluid? I drained the oil and had a bunch of water come out first. I am hoping I don't have a cracked pump cause of the very cold winter we had. On the relief valve, should it just be able to move freely or should it have a specific amount of spring pressure to be able to work? The linkage was all attached and the appeared to move without any problem. Any advice?

I only replace parts if they are bad and right now you don't have any evidence of bad parts.

Leave the relief valve for another day AFTER you have verified the pump is actually pumping.

Have you verified the control valve is moving? If it doesn't move nothing gets pumped. You can operate it by hand with the tractor shut off to verify it moves freely and and if does and you are careful with the tractor and PTO running to check for output flow.

That would be my next step if I were you.

TOH

RobBruno · Apr 16, 2014

I would agree that I don"t exactly know what to replace right now. I can see the control arm moving the valve back and forth. I could reach in there when the engine was off and move it around. How can i test the outflow?

Hydraulic lift

RobBruno

Member

TheOldHokie

Well-known Member

RobBruno

Member

Similar threads