Components:
- Brake Drum: The rotating part that the brake shoes press against to create friction and slow down or stop the vehicle.
- Brake Shoes: The parts that press against the drum to generate the necessary friction for braking. They are typically made of high-friction material to ensure effective braking.
- Brake Linings: The friction material attached to the brake shoes. These linings wear out over time and need to be replaced periodically.
- Air Chamber: The component that uses compressed air to apply force to the brake shoes, engaging the brakes.
- Return Spring: This spring helps retract the brake shoes when the air pressure is released, allowing the brakes to disengage.
- Brake Cam or Wedge: A mechanical device that converts the linear motion of the air chamber into the rotational motion needed to apply the brake shoes against the drum.
- Wheel Cylinder/Caliper: In some designs, this component helps in applying the brake shoes evenly against the drum.
