The medallion is removed, as well as the cardboard backing. This exposes the top of the "dome" .
Finding a suitable device proved to be a challenge. I settled on cutting up a fan pulley. It was the perfect size and diameter . Here's a view of the cut-up pulley, showing where it will fit...
You can see the tight dimensions - the "Special Tool" must fit INSIDE the aluminium gear, as well !
Finally, the fan spacer will serve as a handy object for the press to act on.
And the "special tool " put in place ...(picture is wrong, should show the fan spacer sitting on top of the Special Tool)
Then - start pumping the handle and be ready for an explosion - the two parts are welded together by corrosion ! Eventually, they WILL pop apart . Noisily .
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