The hold down springs secure the brake shoes to the backing plate. When you move the cursor over the drum brake, you'll see the names of the various components. What is the role of the brake drum? To build up a high pressure in the brake system. To reduce the force on the pedal. To slow the wheel down.

The role of the brake drum is to slow the wheel down. The brake drum is a cylindrical component in a drum brake system that houses the brake shoes. When the brake shoes are pushed outward by hydraulic pressure, they press against the inner surface of the brake drum, creating friction that slows down the wheel.