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GM Brake Shoes

GM brake shoes refer to the mechanical, expandable actuators found inside the brake drum. A brake shoe assembly resembles an almost complete circle. The circle is divided into two arches. Each metal arch (brake shoe) has layers of brake pads. The brake pads are typically comprised of metal fibers, asbestos, hard rubber, and ceramic layer. The brake pads are intended to absorb the heat caused by friction. The brake shoes are hydraulically operated. When the brake pedal is stepped upon, hydraulic pressure is sent by the master cylinders found behind the firewall to the slave cylinders of the brake shoes.

GM Brake Shoes

Consequently, the pistons of the slave cylinders push the brake shoes to expand outward. This results in the pressing of the brake pads against the internal wall of the brake drum. As a result, the brake drum slowly or abruptly stops rotating because of friction. Since the brake drum is connected to the wheel, the wheel also stops rotating. The brake shoes also have an adjuster mechanism and emergency brake mechanism. The adjuster mechanism facilitates the automatic adjustment of the brake shoes as the brake pads become thinner due to wear and tear. On the other hand, the emergency brake mechanism allows the brake shoes to lock into brake position. This mechanism is very useful when parking the car on a steep or inclined road.

Although the brake drum system is more complicated (and to some extent, less efficient) than the rotor brake system, the brake drum system still has some advantages. For instance, the brake shoes of the brake drum system have an automatic adjuster mechanism which is typically not available in brake rotor systems. Simply browse our online catalog if you are looking for dependable aftermarket GM brake shoes.

GM Brake Shoes - GM Brake Shoess


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