Welcome to the forum. I would say a small wheel puller is needed to remove the pulley from the shaft. Either way, sounds like you need a new pump.
08 JK 23S - Colorado Jeep Club No. 204
Too much to list - see my profile for details on build
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"It takes a special kind of stupid to believe criminals will follow gun laws."
I do not consider myself a smartass. I point out the obvious, search for the truth, and speak fluent sarcasm. I am, by experience, an accomplished curmudgeon.