

There are primarily two types of springs in a drum brake system return springs and hold-down springs. Return springs are designed to pull the brake shoes back to their original position after the driver releases the brake pedal. This action prevents the shoes from dragging against the drum, which not only enhances fuel efficiency but also prolongs the life of the brake components.
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.