You pull apart the insides of the hub, be it the auto hubs, warn hubs, whatever you got. Then you pull the rotor off the spindle. When you pull it off the spindle all you have is the outer part of the hub and the rotor. The dust sheild remains intact to the spindle on the axle. Set the assymbly on the ground, pound out the lug studs. Put new rotor on. Pound the studs back in. Being SURE the studs seat all the way.