ASE Auto Maintenance and Light Repair
Terms & Definitions
Practice Test
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Drum brake
A material whose atoms become oxidized Electrically charged in solution. In automobiles, the battery electrolyte is a mixture of sulfuric acid and water.
Housing for the differential pinion gears side gears. Mounting point for ring gear.
A braking system that uses cast iron drums mounted to the wheel hubs. Hydraulic pressure from the brake system forces pistons in the wheel cylinder to press friction wind brake shoes against the inside of the drum, stopping its rotation.
A door in the heating and air conditioning system that controls the temperature of the air going into the passenger compartment.