Thank you - Yes, just like that.Is there a slot in the quill? A wedge in the slot will pop the arbor out of the quill.
Jacobs tapers are different from morse tapers.
another good tip is to turn it the way to tighten it then really fast go the way to loosen it and dont hold the top part only the bottom and the harder it is to twist the better.Dunno, it's a benchtop Delta. I will post photos. Thanks for the advice on the strap wrench needs, makes sense.