

The adjuster mechanism is responsible for compensating for the wear of the brake shoes. As the shoes wear down, the adjuster moves them closer to the drum to maintain optimal clearance and ensure consistent braking performance. Most modern drum brake assemblies have an automatic adjuster that self-adjusts each time the brakes are applied.
Another essential part of the drum brake system is the wheel cylinder. Located at the top of the brake assembly, it houses pistons that are activated when hydraulic pressure from the brake fluid is applied. The wheel cylinder pushes the brake shoes outward, creating friction against the drum. This hydraulic mechanism allows for smooth and powerful braking with minimal effort from the driver.