METELLI 05-0648 Brake master cylinder

The Toyota master cylinder is the heart of your car’s hydraulic braking system. Here’s a breakdown of its critical role:

• Function: The master cylinder converts the mechanical force you apply by pressing the brake pedal into hydraulic pressure. This pressure is then transmitted through brake fluid to the rest of the braking system.

• Process:

  1. You press the brake pedal.
  2. The force from your foot presses a piston inside the master cylinder.
  3. This piston movement compresses brake fluid in the master cylinder reservoir.
  4. The incompressible brake fluid is then forced through brake lines to the brake calipers or wheel cylinders (depending on disc or drum brakes).

• Impact: The pressure created by the master cylinder is what ultimately applies force to the brake pads or shoes, causing them to clamp down on the rotors or drums and slow down the wheels.