Before delving into lubrication practices, it's important to understand the fundamental components of drum brakes. Unlike disc brakes that use a rotor and caliper mechanism, drum brakes consist of a hollow drum that rotates with the wheel. Inside the drum are brake shoes that, when the brake pedal is pressed, expand against the drum’s inner surface, creating friction and slowing the vehicle down. Over time, these components can wear out or become corroded, making lubrication essential.
Frozen rear drum brakes are a common issue faced by many vehicle owners, especially in colder climates where road salt and moisture can exacerbate the problem. These brakes play a crucial role in stopping your vehicle, and when they become frozen, it not only affects performance but can also lead to dangerous driving conditions. In this article, we will explore the causes of frozen rear drum brakes, how to identify the issue, and possible solutions.
When you press the brake pedal, the force is transmitted through the master cylinder, generating hydraulic pressure. This pressure travels through the brake lines to each brake assembly, including the drum brake system. Within the drum brake assembly, the brake cable is pulled, which then activates the lever. As the lever moves, it pushes the brake shoes against the drum, effectively slowing down the vehicle.
Cependant, malgré ces inconvénients, les freins à tambour ont certains avantages qui les rendent sûrs dans de nombreuses situations. Par exemple, ils sont généralement moins coûteux à produire et à remplacer que les freins à disque. De plus, leur conception permet une surface de contact plus importante, ce qui peut offrir un meilleur freinage dans certaines conditions.