Check for loose or missing bolts. Check also for incorrect wheel rim, incorrect rotor, or incorrect caliper.
year of car/truck ? if its a Dodge truck look at brake caliper adapter for wear,check caliper retaining clips if their broken they will let the caliper move up in the caliper adapter hitting tour wheel hub . is the wheel right one for veh ? If you just changed the pads and did not compress the caliper piston all the way down. the caliper can rub against the wheel. The whole caliper floats and if the piston is not fully compressed it can hit the wheel with the new pads on.
STICKING BRAKE CALIPER
The caliper is one part of the brake system.
Remove the caliper retaining bolts from the inside of the caliper. Lift the caliper off the mounting bracket and over the rotor. Slide the old inner and outer brake pads out of the caliper, and slide the new brake pads into the caliper.
A caliper is a measuring tool that measures either the inside or outside diameter of something. Disc brakes on a car use a caliper to push the brake pads against the rotor to stop the car.
Caliper and Disk brakes
rubber section of brake line to caliper clogged and in need of replacement
Frozen brake caliper
When disc brakes are applied, a caliper squeezes the brake pads against the disc and the wheel slows. When drum brakes are applied, curved shoes located inside the drum are pushed outwards, rubbing against the inside of the drum and slowing the wheel.
if its on a car or truck (brake caliper) it is how the emergency brake works, usually on the rear, it has a cable that turns the cylinder inside the caliper
applying the brakes
failing brake caliper caliper seizing
faulty master brake system