The brake drum is an important part of the automobile brake system, so what is the main role of this part? This is a problem we are going to introduce to you today, let's take a look at this problem.

When the brake drum is working, when the pad wears, more space will be created between the brake shoe and the drum. When the car stops during reversing, it will push the brake shoe to make it close to the drum. When the gap becomes large enough, the adjustment lever will shake enough to advance the adjustment gear by one tooth. The adjuster has a thread like a bolt, so it can be loosened a bit when turned and extended to fill the gap. Whenever the brake shoes wear a little, the adjuster will advance a little more, so it always keeps the brake shoes close to the drum.

The emergency brake on the car is activated using a power source other than the main brake system. The design of the drum brake allows for a simple cable activation mechanism.

The regulator of some cars will activate when the emergency brake is used. If the emergency brake has not been used for a long time, the regulator may no longer be able to adjust. Therefore, if your car is equipped with this type of regulator, you should use the emergency brake at least once a week.