The brake rotor can be changed by lifting the van and securing it. Take the tire off. remove the brake caliper by taking the two bolts out that retain it. They should be 3/8 Allen head bolts. The brake caliper should lift off. On some models, the brake rotor will now slide right off. Other models require going further. Remove the dust cap and cotter pin on the spindle. Unscrew the retaining nut and slide the outer bearing off. The whole hub assembly will slide off. Drive the inner bearing and seal out. If your having it turned, leave the races in the hub.