Be careful to not pull on the ABS sensor wire (arrow) as you unbolt the caliper. It's best to unclip it from the brake line before you move the caliper. To minimize the mess don't remove the brake line yet, but also be careful not to damage the line or let the caliper hang from it. If your Jeep frontend has never been apart, you'll have push-on clips over some of the wheel studs holding the rotor in place. We had road grime and salt holding our rotors onto the unitbearings and had them break it free with a plastic mallet.