Before you take off the wheel, loosen its lug nuts and axle hub nut, raise the car, and use sturdy jackstands to hold it in place. Next, remove the brake caliper and disc. Remove the two parts holding the wheel speed sensor: its clip from the knuckle, and its bolt. Pick up the sensor handlebar-style, and unhook it from the knuckle. Take off the nut connecting the ball joint to the control arm. If the ballstud turns easily, hold it steady with an Allen wrench before using a balljoint tool to divide the ball joint from the control arm. Gently move the ball joint close to the drive axle and slide it off, being cautious not to stretch too far into the inner CV joint. If the splines get stuck in the hub, use a puller to push the axle forward, then use wire or rope to hold it in place. Because of a small opening in the knuckle's ball joint cap, put a drift punch in the hole to take off the snap ring. Put the ball joint press tools in place, choosing the right attachments, then you can take the ball joint out of the knuckle by tightening the press tool. Installation goes the other way: replace the ball joint stud nut, then tighten every attached item.