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Auto Repair & Maintenance Glossary: B

battery: A box filled with a solution of water and acid called electrolyte. The box contains metal plates that store current generated by the alternator and deliver it to the parts of the car that operate electrically.

block heaters: Devices that keep the engine warm in very cold weather when a vehicle isn’t used. These are especially important for starting diesel engines at extremely low temperatures.

brake booster; power booster: In a vehicle with power brakes, a brake booster is located between the brake pedal and the master cylinder to increase the force applied to the pistons in the master cylinder.

brake fluid: The liquid used in the hydraulic brake system to stop or slow the car.

brake lines: A system of hoses and metal tubes through which the brake fluid flows from the master cylinder to the brakes at each wheel.

brake lining: A high-friction material that’s attached to the brake pad or brake shoe. When the pad is pressed against the disc, or the shoe is pressed against the brake drum, the lining grabs the disc or the inside of the drum, which slows the wheel and thus the car.

brake shoes: Curved pieces of metal on which are bonded high-friction brake linings that are forced against the brake drums to slow or stop the car.

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