DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.
On a drum braking system thse are metal drums that are mounted on each wheel. The brake shoes press against the inner surface of the brake drum and cause the vehicle to slow down.