If your axle is not mounted in the truck, there is no need to struggle with trying to remove the kingpins. A shop can use a big press and just enough force to move them out.
I removed mine with the assembly still together but no fenders to get in the way! I used a full size sledge hammer, a screw jack under the axle and a wrist pin as a drift. The driver's side was the toughest to remove. The other day I was cleaning up the floor and I discovered that I had left the imprint of the jack base, in the concrete! Now I know why it took so much of my energy.
