What is a brake master cylinder?

The brake master cylinder is an essential part of a vehicle's braking system. It is responsible for converting the force applied to the brake pedal by the driver into hydraulic pressure, which is then used to activate the brakes.

The master cylinder consists of a reservoir that stores brake fluid and a piston mechanism. When the driver presses the brake pedal, it pushes on a rod connected to the piston inside the master cylinder. As the piston is pushed forward, it pressurizes the brake fluid in the cylinder.

This pressurized brake fluid is then transmitted through the brake lines to the brake calipers or wheel cylinders, depending on the braking system design. The pressure created by the master cylinder forces the brake pads or shoes against the brake rotors or drums, resulting in the friction needed to slow down or stop the vehicle.

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