Emergency brake

In cars with disc brakes on all four wheels, an emergency brake has to be actuated by a separate mechanism than the primary brakes in case of a total primary brake failure. Most cars use a cable to actuate the emergency brake.

Disc brake with parking brake

Some cars with four-wheel disc brakes have a separate drum brake integrated into the hub of the rear wheels. This drum brake is only for the emergency brake system, and it is actuated only by the cable; it has no hydraulics.

Other cars have a lever that turns a screw, or actuates a cam, which presses the piston of the disc brake.

How Emergency Brake Works?

The emergency brake on a car has to be actuated by a different power source than the primary braking system. The drum brake design allows for a simple cable actuation mechanism.

Emergency brake in operation

When the emergency brake is actuated, a cable pulls on the lever, which forces the two shoes apart.

© Copyright 2007 Insure-yourcar.org offers Great information about Vehicle (cars, motorcycles, bicycles, trains, ships and aircraft), Save money when shopping for your vehicles, How to choose your auto insurance, How to get loans for your vehicle with the least amount of money , How to buy your new or used car, Get list of the best used and new car with there description and gallery, Please help support our free ads by linking to our site.