3-Point Hitch one arm of 3 point lift will not lift

[JRF]

Hello, I have a Kubota B7500HST. left side arm (looking from back) on 3 point lift will not lift. Hydraulics goes up and down correctly only left arm stays down.
Everything is attached. Nothing slipped off. Any ideas what it might be. Where do I start looking?
Thanks.

 

[teg]

View attachment 529909

Lift arms are not independent... lift arms are raised together. Something broke. 050 in the parts above? or stripped out grooves.

 

[BX23S-1]

Ouch, thats gonna cost some money to fix. I agree, sounds like something broke internally.
I agree with #50 too... its a place to start anyway.

 

[teg]

On the side that doesn't move with hydraulics, you should be able to pick it up by your hand. Does it rotate around the shaft? or does the shaft and arm move together?

 

[Egon]

Broken shaft or stripped arm end. Should be an easily removed cover plate that will open up the housing.

Thought I posted this reply yesterday.

 

[JRF]

Thanks everyone. Lift arm is stripped. Shaft splines seem to be in good shape.
Thanks for the replies.