This cotter pin? I bent the tabs and used a hook to get leverage on it. Took about 2 min

 

Here I used this hook



Reach up from the bottom and hook the head. I am not going to mess with the pin but you pull it strait down





Hard to see but the hook is on it

 

Oh sorry thought you were talking about the cotter pin.

 

well that was a good read- filed this knowledge away for when i change mine. thanks all for sharing.