A drum brake system is made up of a number of mechanical components, these include:
When the driver presses on the brake pedal, a hydraulic valve containing the brake fluid builds up pressure and applies it through a piston located in the wheel cylinder. The piston forces the shoe to expand, and this applies abrasive pressure to the wheel causing it to slow down. There is a strong retraction spring that forces the piston back into place when the pressure is released by lifting up the driver’s foot from the brake pedal.
The front-wheel shoe is called the primary, and the rear wheel shoe is termed the secondary.
Since drum brakes are so old in concept, their design proves that they work and current technologies have yet to determine a safer and cost-effective solution to replace them.
Worn Brake Signs
To change the brake shoe, you will need around 2 hours of time and require the following tools:
You are ready to go.