The brake system is actually composed of two kinds of systems–Hydraulics and Friction Materials. Here’s what happens within these systems between the time your foot hits the brake pedal and your car stops.
HYDRAULICS MASTER CYLINDER
When pressure is applied to the brake pedal, the master cylinder creates hydraulic pressure, which pushes brake fluid to the wheel brakes.
BRAKE LINES AND HOSES
Steel brake lines and high pressure rubber hoses are the avenues through which the pressurized brake fluid travels.
WHEEL CYLINDERS AND CALIPERS
These are the hydraulic cylinders that apply pressure to the friction materials, causing your car to stop.
FRICTION MATERIALS DISC BRAKE PADS AND DRUM BRAKE SHOES
These brake linings are composed of high temperature materials that create the friction that stops your car
TYPES OF BRAKES DISC BRAKES
Disc brakes consist of a Disc Brake Rotor, which is attached to the wheel, and a Caliper, which holds the Disc Brake Pads. Hydraulic pressure from the Master Cylinder causes the Caliper Piston to clamp the Disc Brake Rotor between the Disc Brake Pads. This creates friction between the pads and rotor, causing your car to slow down or stop. Disc brake rotors must meet a minimum thickness. When the brake rotors’ thickness drops below the minimum standards they must be discarded and replaced. Disc brake rotors may become warped due to hard braking or heat. When this occurs the driver may feel a vibration when applying the brake pedal. Many times the brake rotors can be resurfaced to smooth out the high spots.
Drum brakes consist of a Brake Drum attached to the wheel, a Wheel Cylinder, Brake Shoes and Brake Return Springs. Hydraulic pressure from the Master Cylinder causes the Wheel Cylinder to press the Brake Shoes against the Brake Drum. This creates friction between the shoes and drum to slow or stop your car. Parking Brake The Parking Brake uses Cables to mechanically apply the brakes (usually the rear brake.) This is used to prevent the car from rolling when not being driven.
A System Built For Safety Computer-controlled anti-lock braking systems (ABS) are a recently developed safety feature. When sudden stops are made, the ABS prevents wheel lock-up. The system is comprised of wheel-speed sensors that monitor wheel rotation, computer-controlled hydraulics that pulse the brakes on and off rapidly, and the on-board computer.
DID YOU KNOW?
Racing legend Richard Petty once said, “If you’ve got good brakes you can stay out of a lot of trouble.” If you’re hearing unusual sounds when you brake or if your brake pedal is feeling squishy or too hard, have us do a disc brake inspection for you. We’ll tell you if there’s something wrong and what it’ll take to get your brakes all fixed up. At Dick Adams Automotive in Salinas we install quality NAPA replacement parts. Give us a call at 831.758.8277 and let us help keep you safely and economically on the road.