How do you take the pulley off the power steering pump?
You have to use a pulley puller that you can find at many parts stores or order on-line. Do not hammer the pulley onto the new pump or you will damage it. Use an installer or the bolt, nut and washer that comes with many replacement P.S. pumps to press the pulley on the shaft, making sure it is pressed on as far as it was on the old one was so the belt will be properly aligned.