Hi mark-wrx,
Looking at the workshop manual, it says remove the steering knuckle. To do this means removing the wheel, abs sensor, hub bearings unit, drive shaft.
Then the manual shows several special tools to remove the steering ball joints from the axle. It mentions looking for yellow paint marks, due to the ball joints only being able to be replace up to three times, (each renewal needs a yellow paint mark to be made) then a new axle, due to mounting hole wear.
Perhaps someone who has done this job may know a quicker and easier way without all the dismantling, (a trick of the trade).