a special tool to separate the ball joint from the knuckle - i never use one - follow steps #1 thru #4 - when you get to step #5, do not place jack under control arm yet - remove cotter pin from ball joint stud - loosen ball joint nut several turns but do not completely remove the nut - take a heavy (4-5lbs) hammer and hit the side of the knuckle where the ball joint stud goes thru (not the ball joint itself) with several hard raps - hit green area in attached picture (picture isn't exactly what yours looks like) - the ball joint stud will pop loose - place jack under the control arm and jack up enough to remove pressure from the nut - remove the ball joint nut - slowly lower jack - the torsion bar will push the control arm down and you can swing the knuckle/hub assembly out of the way