Guess I get to answer my own question.
The pulley assembly is held on the armature shaft by a 22mm bolt. Problem is, these bolts get frozen onto the shaft and one must hold the armature stationary in order to ratchet the bolt off. Quite difficult UNLESS you happen to have an impact wrench that will VIBRATE the bolt off. A guy at PepBoys did it for me with no problem, holding the armature assembly stationary by hand. That's the trick. It's all in the vibe.
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