This is how I just recently removed mine.
1. Place axle onto jack stands.
2. Remove all the stuff so only the spindle
is left.
3. Use a floor or bottle jack with a heavy chunk of iron, such as a sledge hammer placed on its side on top of the jack and then jack up to the bottom of the king pin [after you take the plugs out], jack until you take the weight off the the jackstand, whether it be the left one or the right one.
4. Place a slug of close to the same diameter on top of the kingpin, I used a 1/2 or 9/16 nut. There will be about 1/4 of an inch of the nut sticking up above the knuckle.
5. Beat on the nut with a 4 or 6lb sledge. I am sure it will start to move for you. the key is to have something real heavy on the bottom. I used a post pounding mallet head that weighs 14lbs.
5. Once you have the kingpin pounded flush to the bottom of the knuckle, you will have to place a short piece of pipe a little larger inside diameter than the kingpin outside diameter, between the bottom of the knuckle and your chunk of iron and jack.
6. On top I used a 3/4 inch bolt, held with vise grips and carried on beating the pin out. It worked for both sides.
Good Luck, Brian