Auto Disk Brake Repair Information
Disk brakes consist of few components, and they are basically the same across different makes of vehicles. Knowing what parts exist in the disc brake system helps you know what needs to be replaced and what tools are needed. Disk brake repair is a job most do-it-yourselfers can tackle easily.
Overview of Disk Brakes
Think of disk brakes as pads squeezing against a metal disk, or rotor, when you apply the brakes. That pressure for the pads to squeeze the rotor is increased and decreased by fluid in brake lines that respond to brake pedal action. That action is controlled by the caliper, which holds the brake pads and has a piston.
As a result of the friction created in the braking process, brake pads wear down. Rotors warp when brakes get hot. If the front of the car shakes when you apply the brakes, the rotor is probably warped.
The Components
- Caliper - This component fits out over the rotor near the top of the brake assembly. To remove it, you will need to take out at least one bolt and carefully depress the piston behind the rotor toward the engine with a large screwdriver. Be careful you don't scratch the rotor. Some systems will require you to remove a brake line. If so, you must bleed the brakes when you are done.
- Brake Pads - These are replaceable pads you get at auto parts stores. Your vehicle requires specific pads. The brake pads go inside the caliper. There may be metal tabs to lock in place, and they only go in a certain way.
- Rotor - The rotor is the disk and should be visually inspected when the caliper is off. Take notice of any scarring, grooves or warping. It should be smooth. If the rotor is not warped too much, it can be "turned down" on a special metal lathe for much less than the cost of a new rotor.