What causes the drum brakes to lock up?
What causes the drum brakes to lock up? The most common culprit of locked-up brakes is a malfunction in the master cylinder. The master cylinder is the primary operating system that produces mechanical force from the brake pedal to pistons that operate the drum brakes. What to do when your front brakes lock up? While replacing the master cylinder is the most expensive repair to fix the brakes, vehicle owners can have a certified mechanic check to see if replacing individual calipers and rotors might provide a solution to brakes locking up before embarking on more major repairs. What kind...