How Parking Brakes Work

Here's how emergency brakes work in your car.


The parking brake is used to prevent the vehicle from rolling down an incline. It removes any load on the parking pawl on automatic transmission cars, and is the only holding device on manual transmission cars.

The principle of operation consists of a cable actuated by a foot or hand lever, that is sent to each rear wheel. The mechanism inside the rear drum will activate, causing the rear shoes to expand outward against the drum. The shoe friction material will contact and hold the drum, preventing wheel rotation.

In this video, the entire parking brake system is removed and dissected to show what each component does and how it works. The vehicle in this video is an Infiniti G35.

Parking brake shoe replacements can be bought here:
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The spring release tool (easier than using a pliers) can be found here:
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The rear drum/disc can be found here:
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https://amzn.to/2PTcHhV (Canada)
Parking brake cable replacement:
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https://amzn.to/2NdmUE7 (Canada)

This is the Camera I use:
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https://amzn.to/2Yhb3eo (Canada)

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