The powertrol pump on my 820 (2 cylinder) makes a loud grinding noise when switched to on and the hydraulics don’t work. If I turn the lever a little one way or the other, the grinding goes away. Perhaps it’s not kicking in and for some reason, the lever can be turned all the way around in either direction but shouldn’t it only have 180 deg of rotation? In other words, shouldn’t you only have to turn it clockwise to on and then counter clockwise back to off?
I did take the pump off the tractor and took it apart but didn’t see anything obvious that was wrong. I have the parts manual and there doesn’t appear to be any parts missing. The bushings seem a little worn causing the drive gear to be a little loose. Also, the shifter collar has grooves ate in it from contacting the drive gear pins so could that be why it’s making a grinding noise? Most of these parts are not available anymore from JD so should I be looking for a used pump? Anybody have one for sale?
John
I did take the pump off the tractor and took it apart but didn’t see anything obvious that was wrong. I have the parts manual and there doesn’t appear to be any parts missing. The bushings seem a little worn causing the drive gear to be a little loose. Also, the shifter collar has grooves ate in it from contacting the drive gear pins so could that be why it’s making a grinding noise? Most of these parts are not available anymore from JD so should I be looking for a used pump? Anybody have one for sale?
John