Motor Brackets

I'm starting to look at designing motor brackets for my mill conversion
but have an issue.

I'm trying to remove the key from the x and y screws but having no luck.
Is there a trick to this ? I've tried tapping it with a hammer but no
luck.

It looks as though I need to remove this key before I can slide the
dials and end caps off the shafts.

Has anyone got pictures/designs for motor brackets when using timing
belts and pulleys ?

thanks

Phil




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