Zetor 5211 lift bouncing

[SPLnut]

hitch bounces constantly when an implement is attached...

 

[Reg]

hitch bounces constantly when an implement is attached...

Check the linkages from the position control lever and .....whatever it is called, the rod that communicates back to the valve where the rocker shaft's position is.

Low fluid check first, but I was assuming that you would have already done that before posting ?

 

[carpenter383]

Does the tractor have draft control?

 

[SPLnut]

yes i believe it has draft control that's the 3rd lever

 

[carpenter383]

yes i believe it has draft control that's the 3rd lever

Make sure the lever is all the way down and/or the top link is in the hole that isn't affected by draft control. Draft control senses downward force on the 3ph and could cause the symptoms you describe.

 

[SPLnut]

still bouncing...It'll go down 3 or so inches and bounce back up

 

[Renze]

still bouncing...It'll go down 3 or so inches and bounce back up

Your piston seals leak. Take off the 3pt lift cover with a workshop engine lifter (if it has a cab and you've removed the floor) and you'll see the big piston underneath.
The cylinder leaks oil and the position control keeps correcting that.