Q:

What parts make up a brake system?

A:

Quick Answer

The master cylinder, brake lines, brake caliper, brake piston and brake pads are some of the parts that make up a brake system. Other parts include the parking brake, power booster, brake hoses and brake fluid.

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Full Answer

A master cylinder activates the piston when it pumps brake fluid to the brake lines from the reservoir. It turns brake pedal pressure to hydraulic pressure.

Brake lines are the metal tubes that transport brake fluid to other system components from the master cylinder. The brake caliper is the housing mounted on the brake rotor in a fixed position. The brake rotor consists of the brake pads and the piston.

A brake piston presses the brake pad against the rotor as the master cylinder feeds the system with hydraulic fluid. The brake piston is a round rod.

Brake pads are metal plates that grip the steel rotor with the help of a semi-metallic overlay. They help stop or slow a car.

The parking brake is the system that applies brakes mechanically through some cables and linkages. The driver operates the brake using a hand-operated lever or foot pedal depending on the type of car.

A power booster, also referred to as the vacuum booster, uses atmospheric pressure, diaphragm and engine vacuum to ensure the driver applies brakes successfully.

Brake hoses are pipes that link the brake lines on the chassis with wheel cylinders or calipers. They also link the brake lines with the junction block. Brake fluid transmits hydraulic pressure across the brake lines.

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