First, take out the rear driveaxle nut. Before you start, block the front wheels, loosen the rear wheel lug nuts, jack up the car's back end on jackstands, and raise the back with a jack. Remove the rear wheel. If your car has drum brakes in back, detach the brake drum. To service rear disc brakes, detach the caliper, secure it out of your way with a wire, dispose of the caliper frame, and remove the brake rotor. Take out the bolts from the backing plate and hang up the backing plate in a safe position. Twist the driveaxle/hub nut loose, then push the driveaxle through the hub's many splines as you take out the wheel hub assembly together with the bearings. To get the driveaxle moving again, use a puller device to push it through the hub lubricated with pipe joint compound. While taking off the hub, be watchful not to overstretch the inner CV joint. Prepare a length of rope or wire to hold up the driveaxle's far end. Putting everything back together works like taking it apart, but make sure to tighten all fasteners to the right tightness (torque).