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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.
components of a drum brake

2. Heat Dissipation Heavy-duty vehicles often endure prolonged braking, particularly when descending hills or stopping frequently in urban areas. Brake drums are designed to dissipate heat generated during braking, preventing them from reaching temperatures that could lead to failure. Properly designed and maintained brake drums help ensure that the braking system remains effective even under duress.
heavy duty brake drums
