Originally Posted by cewing
It will not just lift up and pull out must be a lever on left side of tv but my big hands will not fit
There's probably a release bar behind the TV. You'll need someone with small hands to reach back there and manipulate the release bar. Once off, the TV will drop back into the locking groove. Use a mirror and flashlight to look back there to see how the bar is situated.
Not all TV hangers are the same, even in the same rig. I think it depends on whatever is at hand at the time.