Jubilee hydraulic problem

My 1953 Golden Jubliee has a hydraulic problem. The three point was settling down and than it would jerk back up into place. I took it apart and the rings around the piston were in very bad shape. I replaced them, checked the check valve and it seemed ok. Now comes the bad part. I put it back together and when the arms move or when they are still. They jerk so hard the whole tractor shakes. But I have a heavy implement on the back and it does not settle down any more. Any advice or information will be very much appreciated. thank you
 
(quoted from post at 18:40:01 09/08/21) My 1953 Golden Jubliee has a hydraulic problem. The three point was settling down and than it would jerk back up into place. I took it apart and the rings around the piston were in very bad shape. I replaced them, checked the check valve and it seemed ok. Now comes the bad part. I put it back together and when the arms move or when they are still. They jerk so hard the whole tractor shakes. But I have a heavy implement on the back and it does not settle down any more. Any advice or information will be very much appreciated. thank you
ot enough information detail here for me to address it.
 
(quoted from post at 19:01:51 09/08/21)
(reply to post at 15:59:31 09/08/21)

It acts more like a flutter than a leak.
o, not like a leak down followed by a correction? Unless it is a very fast leak down.
New rings in an old cylinder didn't sound good. When lifted & turn off engine, how long will it hold a load up? Act different in Position control mode than in Draft control mode?
 

Jerk, could it more of a constant chatter/shiver while lifting. I am leaning toward it has air in the system. If that's the case in time it will self bleed.
 
(reply to post at 17:57:19 09/08/21)

That sounds like it could very well be the problem. I am hoping It will self bleed. When I put two o rings in the bottom of the pump. I had to bleed a hex head plug in the pump. I don't know if that will work now or not. Thank you for all the help. I will let you know what happens tomorrow.
 
Run the engine at idle speed and loosen the hex plug on the front of the pump until fluid starts spurting
out. The air will make a popping sound as it bleeds itself out. When you have pure fluid tighten the plug and
all should be well.
 
(reply to post at 18:33:33 09/08/21)

Well, I thought we had the problem solved, but I did not get any air out of the bleed plug. The problem still exists, Could it have something to do with the onloading valve.?
 
(quoted from post at 15:44:21 09/08/21)
(quoted from post at 18:40:01 09/08/21) My 1953 Golden Jubliee has a hydraulic problem. The three point was settling down and than it would jerk back up into place. I took it apart and the rings around the piston were in very bad shape. I replaced them, checked the check valve and it seemed ok. Now comes the bad part. I put it back together and when the arms move or when they are still. They jerk so hard the whole tractor shakes. But I have a heavy implement on the back and it does not settle down any more. Any advice or information will be very much appreciated. thank you
The box blade that is on it is very heavy. Is it possible that it is too heavy for the unloader valve that is in the hydraulic system.?
 
Nope, I just answered my own question. I took off the heavy box blade and it still shakes. Even if I just lean on the arms.[/quote]ttps://i.imgur.com/dzuoRAJ.jpg[/img]

This post was edited by JMOR on 09/09/2021 at 06:21 pm.
 

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