Got it. Here are the rest of the steps to remove the kingpin/swivel axle assembly.
Loosen kingpin castle nut (soak it for a few days in Liquid Wrench and use a long breaker bar)
Disconnect the two steering arm bolts and move the steering arm away from the swivel axle
Jack up the spring pan to remove the tension from the spring. Remove the lower trunion pin and bolt. Lower the jack.
Remove the upper trunion pin and bolt
Remove the kingpin/swivel axle assembly