Help Rescuing an Old Yale Dial

I’d like to rescue an old Yale dial but I’d like some guidance before I use brut force. In the attached pictures, is the spindle attached to the upper part of the spindle/dial with threads or pressed on (see the space circled in red)? If it’s pressed on, should I use a wedge to separate it, clean it off and press it back on with JB Weld or just use a brass hammer to push it together? You can’t tell from the picture but it’s currently off center.

Thanks!!

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