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Will the brake become hard after stopping for several hours?

1 Answers

DelBrayden

07/29/25 11:26am

Brakes may become hard after stopping for 12 hours. Here are the specific details: 1. Reason: It is normal for the brake to become hard when the engine is off. When the vehicle is running and the brake is pressed, the brake vacuum booster pump operates, utilizing the engine's vacuum to provide assistance. After the engine is turned off, the vacuum level disappears as the engine stops working, and the brake vacuum booster pump ceases to function, causing the brake to become very hard. 2. Introduction to the Brake System: A car moves on the road due to the rotation of its wheels. When the car needs to stop, the driver cannot extend their foot to the ground like in cartoons to halt the vehicle. Instead, the car relies on its braking system to reduce speed and come to a stop. The braking system generates friction between the brake pads and the drum or disc, converting the kinetic energy of the moving car into heat energy during the friction process, thereby dissipating it.

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