Power Steering Problem

[68GMC_Dan]

This may be a little long winded

Removed my AC Compressor (Cut Belt Removed hoses and Compressor).... Power steering stopped working as well??? Bought a new pump , which after Researching Autozone pumps am fairly certain it is bad. Question comes in on the pulley I pressed my old pulley on the new pump and when I turn the wheel I get the screaming , no working power steering (Bad Pump Im assuming) and the pulley seems to move (Alot) and stick while it screams... Any ideas on wtf is going on? Think the pump is bad or did I eff something up?

Its a 77 GMC k1500 400SBC if it matters.

Thanks
Danny