ASE Auto Maintenance and Light Repair
Terms & Definitions
Practice Test
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Dual master cylinder
The part of a clutch assembly that is used to hold the driven disc against the flywheel. The pressure plate is composed of a cover coral springs, driving disc release lever, or a diaphragms boring.
A device attached to a mechanically driven cooling fan that allows the fan to freewheel when the engine is cold and the vehicle is driven at speed.
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 master cylinder that has one cylinder bore, but two pistons into fluid reservoirs. Each piston applies hydraulic pressure to two wheels only. In the event one of the hydraulic circuit fails, the other provides enough breaking power do you stop the vehicles.