Join Date: Jan 2004
Location: Saginaw, Michigan
Re: power steering pump pulley removal
Up until 1975 the power steering pump pulley was retained on the pump driveshaft by a nut. The pulley and driveshaft had machined keyways for a 1/8 x 1/2 Woodruff key. Except for corrosion, the pulley should come straight off fairly easily when the nut is removed. If your pump has a driveshaft with a male thread and a nut on the end, this is the type of pump and pulley that you have.
Starting in 1975 both the driveshaft and pulley were changed to a press fit design. This type of pulley and shaft requires that you use special tools as described in the earlier posting. You must use the correct tool to pull the pulley from the shaft. You must also use another special tool to draw the pulley onto the shaft. If you do not use these special tools, you will destroy the pulley and probably the pump as well. This type of connection has a pump driveshaft with an internal 3/8 hex and a 3/8-16 female thread machined inside the driveshaft which you can see looking at the front of the pump.