How do you replace the rear brake pads on a 1989 Lincoln Mark VII LSC if you cannot remove the old ones?

DON'T KNOW IF YOU HAVE THIS , BUT, A SPECIAL TOOL IS REQUIRED TO TURN THE CALIPER BRAKE PISTON BACK INTO THE CALIPER TO ALLOW REMOVAL OF THE PADS THIS IS FOR REAR BRAKES ONLY , THIS SET UP IS PART OF THE PARKING/EMERGENCY BRAKE FOR THIS VEHICLE. Yes there is a special tool but you can get away with a c clamp it will turn as it goes in

The only way to remove the brakes is to remove the entire caliper if the pins are stuck you would have to heat them up. Remember to put caliper grease on pins when reinstalling them .