Coat the new O-ring (A) with power steering fluid, and install it on the inlet joint (B). Install the inlet joint (B) on the pump housing. Install the pulley (A), then loosely install the pulley nut (B). Hold the steering pump in a vice with soft jaws. Be careful not to damage the pump housing with the jaws of the vice. Hold the pulley with the special tool, and tighten the pulley nut. Check that the pump turns smoothly by turning the pulley. If hard turns, loosen the five flange bolts on the cover, then retightening them try again in the same manner as in the step 36.