for the front take caliper off, take rotor off, pop off dust cap,unbolt big nut on center of hub (should be 30mm,32mm,34mm,36mm dont remember what size), and slide it off the spindle. and just reverse steps to put every thing back on
rear's take off brakes,rotor, and undo axle nut (should be 30mm,32mm,34mm,36mm dont remember what size), and take off spindle by unbolting all arms conected to spindle, there are four bolts that hold hub on unbolt them (it may be rusted on might have to hit it apart). and reverse steps to put every thing back on
hope that helps