Which device typically holds the brake assembly together?

The anchor pin is critical in the brake assembly as it serves to hold various components together. In a drum brake system, for example, the anchor pin acts as a pivot point for the brake shoes, ensuring that they remain properly aligned during the braking process. This stabilization is essential because it allows the shoes to expand outward against the drum when the brakes are applied, facilitating effective friction and stopping power.

In contrast, the wheel cylinder primarily functions to push the brake shoes outward when hydraulic pressure is applied. The adjusting screw is used to maintain the proper distance between the brake shoes and the drum, ensuring optimal performance, and the piston rod is commonly associated with the movement of the piston within a braking system, playing a different role in the overall operation. Understanding the roles of each component highlights how the anchor pin is specifically designed to hold the brake assembly intact and functioning properly.