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Noises
Your brake system may be crying for help if you're hearing strange noises when you
depress the brake. Two of the most common are squeaks and grinding.
Squeaks
Friction from the brake lining causes heat. Under extreme conditions this can damage the
pads and/or lining, brake drums and rotors.
Grinding
A metallic grinding sound indicates your brake pads are worn through. Metal-to-metal contact
will damage drums or rotors.
Low or Fading Brake Pedal
Do your brakes require pumping to stop the car? Does the pedal sink to the floor board when you're
stopped at a light? There may be a leak in the brake system, air in the brake lines, or the need
for a brake adjustment.
Pulling to one side or brake drag
Worn or uneven brake linings or a damaged brake line can cause your vehicle to pull to one side.
Brakes that are out of adjustment or have contaminated fluid can cause brakes to drag.
1. Master Cylinder
The master cylinder, heart of the brake system, contains a reservoir for brake fluid. It
is located on the firewall and should be checked periodically to ensure the proper fluid
level.
2. Brake Lines
Attached to the master cylinder, steel brake tubing runs to all four wheels. Brake
lines should be inspected for rust, which can lead to leaks. If the lines are
damaged they should be replaced.
3. Brake Hoses
Rubber brake hoses run from the brake lines to the brake calipers and wheel cylinders.
Constant exposure to road grime, dirt, salt and other elements can cause the rubber to
become brittle and crack, leading to brake failure.
4. Linings and Pads
The pads and brake shoe linings should be checked periodically for uneven or excess wear,
glazing, or saturation from brake fluid or grease.
5. Calipers and Wheel Cylinders
Brakes are activated by brake fluid pressure from the master cylinder pushing a piston
located in the caliper or wheel cylinder against the pad or shoe. A leak can cause
erratic braking or brake failure.
6. Bearings and Seals
Wheel bearings should be inspected and lubricated periodically. Worn wheel bearings,
which can cause faulty steering as well as erratic braking, should be replaced.
7. Parking Brake
The parking brake should be adjusted periodically.
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