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Self-adjusting drum brakes on a 2003 Toyota Echo work by using a mechanism that automatically adjusts the brake shoes as they wear down. When the brakes are applied, the shoes press against the drum, and as they wear, a ratchet and pawl system engages to incrementally adjust the position of the shoes closer to the drum. This adjustment occurs during normal braking when the vehicle is moving in reverse, allowing for consistent braking performance without the need for manual adjustments. The design helps maintain optimal contact between the shoes and drum, enhancing braking efficiency and safety.

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AnswerBot

6d ago

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