that's because Ford engineers are idiots. there is a clearance issue with all the f150, expedition, and navigator rotors of the mid 90's on up. the simple solution to this is to use a small ball peen hammer and knock the rust out from the hub recess in the back of the rotor. it takes some time but that's the fix.
Remove the tire and wheel from your 1993 Lincoln Town car . Remove the brake spring and break caliper. Remove the brake rotor by tapping on it with a hammer or mallet. Slide the rotor off. Reverse the process to install the new rotor and brake pads.
Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub
Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub
Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor will slide off hub assembly
Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub
Remove the wheels Remove the caliper mounting bolts Slide caliper off rotor Rotor should slide of center hub
Remove the tire and wheel. Remove the brake assembly. The old rotor will slide off. You might need to tap on the rotor with a hammer to get it to slide off. Reverse the process to install the new rotor.
Should be of the "peel off" type Remove wheel Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub
Remove wheels Remove caliper mounting bolts Slide caliper off rotor Slide rotor off hub (if "peel off" type)
Remove wheels Remove caliper mounting bolts Slide caliper off rotor rotor should slide off
Should be "peel off" type Remove wheels Remove caliper mouting bolts Slide caliper off rotor Rotor should slide off hub
Remove wheels Remove caliper mounting bolts Slide caliper off rotor Rotor should slide off hub