You don't need the bearing tool...even a little.

Once the little phillips head retaining screws are out, (use a hand impact driver to remove them, & if possible, replace them with metric stainless screws of the same size/pitch) it's easy enough to put a flat blade screw driver on the edge of one of the non tapered holes & give it a little force in the right direction. I've never had to use more than the force of a couple of quick palm strikes to get them started. If you need a hammer, you MIGHT be trying to turn it the wrong way.
If the hole that you put the screw driver blade in is on the top, you want the hole to move left.
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