Parts of a Disc Brake:
1. Brake Disc (Rotor): A rotating metal disc attached to the wheel.
2. Brake Caliper: Houses pistons and brake pads; it applies pressure to the disc.
3. Brake Pads: Friction material that presses against the disc.
4. Brake Fluid: Transfers force from the brake pedal to the caliper.
5. Pistons: Hydraulic components in the caliper that push the brake pads.
Working of a Disc Brake:
When the brake pedal is pressed, brake fluid from the master cylinder exerts hydraulic pressure on the pistons in the caliper. This pushes the brake pads against the rotating disc, creating friction that slows down the wheel. Once the pedal is released, the brake pads retract, and the disc rotates freely.
Advantages:
1. Effective Heat Dissipation: Reduces the risk of brake fade.
2. Superior Stopping Power: Offers consistent braking performance.
3. Low Maintenance: Easier to inspect and replace compared to drum brakes.
4. Improved Durability: Less prone to warping under heavy use.
Symptoms of Faulty Disc Brakes:
1. Squealing Noise: Indicates worn-out brake pads.
2. Vibrations: Suggests a warped disc or uneven wear.
3. Reduced Braking Efficiency: May indicate air in the brake lines or fluid issues.
4. Pulling to One Side: Caused by uneven caliper function or pad wear.