Ethan the steering knuckle is one big piece where the hub sits on the spindle and behind the hub is the lower balljoint and tie rod end. There is a nother piece of the steering knuckle that extends upward and thats where the upper balljoint attaches. The pitman arm puller I used was a u shaped tool with a bolt in the middle. The legs of the puller have feet on them. To remove the upper I loosened the balljoint nut about 1/4 inch. The nut is what holds the balljoint against the top of the spindle attaching piece. I slipped the feet of the puller between the balljoint and the top of the knuckle attaching piece and then you apply pressure by tightening down on the balljoint nut by tightening down the bolt of the puller on it. Thats all there is to it. You tighten it down pretty good and give it a few taps with a small sledge or a hammer and it just pops right out. You may have to turn the wheel in or out to get access to be able to slide the puller in there, I think I turned the wheel all the way inward.