

Return springs are essential for retracting the brake shoes after the brake pedal is released. They pull the shoes back into position, preventing them from dragging against the drum, which would lead to excessive wear and reduced fuel efficiency. Proper tension in the return springs is critical for the quick and effective operation of the brake system.
The weight of the brake drum also has implications for the vehicle's suspension and handling. A heavier drum can contribute to a lower center of gravity, which enhances the vehicle’s stability. However, it also means that the vehicle may require additional power from the engine to handle the increased weight, particularly during acceleration and maneuvering.