Fred from MO
Member
I have had an odd experience with my rockshaft piston failing. I say failing, because I have repaired this issue a couple of times and now I am wondering if it is something I am doing or something is out of specifications? The first it time happened was in the last 5 years, I repaired it then and it lasted up until last fall until I used the tractor extensively to plow up a 4 acre field. I tore the power troll off the back and pulled the piston out of the rockshaft housing, replaced the leather and rubber o-ring and put it back it. Well this repair lasted until last week when I had the sprayer on the 3 point. Now its having issues again such as the rockshafts will not stay up unless I keep my hand on the power troll lever flowing hydraulics to the piston. I am wondering if 1) I am cutting these 0-rings when I am tapping the piston back in from the backside of the rockshaft housing with the power troll unit removed or 2)There is a rough spot on the inside of the rockshaft cylinder housing that's cutting the oring on the piston? or 3) The cylinder housing is out of round from wear and it wont hold an o-ring on the piston when under heavy loaded situations. It seems to fail after using the 3 point with a heavy load such as plowing with my 3 point plow, brush hogg or water tank. Anyone else have a suggestion?