Ford Bronco Rear Drum Brake Diagram - Shoes, Springs & Self-Adjuster Layout
Labeled drum brake assembly diagram identifying primary and secondary shoes, return springs, wheel cylinder and self-adjuster.
This document is a labeled cutaway diagram of a drum brake assembly, identifying the major components and their positions within the brake drum. Callouts identify the anchor pin at the top, the secondary shoe return spring and primary shoe return spring, the wheel cylinder located between the tops of the two brake shoes, the secondary brake shoe (toward the rear) and primary brake shoe (toward the front, indicated by a 'FRONT' arrow), two retaining springs, the backing plate, the self-adjuster at the bottom, and the brake drum itself. Two instructional notes are included: the secondary brake lining does more of the work of braking than the primary brake lining, and the primary brake lining is thinner, shorter, and sometimes made of a different material than the secondary brake shoe lining. The figure carries the reference number H9810-A. A reader can learn the names and locations of drum brake parts, which shoe faces forward, and why the primary and secondary shoe linings differ in size and material. The document contains no year, model, torque, or part-number information beyond the figure reference code; it was uploaded as a reference for a 1992 Ford Bronco.
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Frequently asked questions
- Which brake shoe does more of the braking work in a drum brake?
- According to the diagram, the secondary brake lining does more of the work of braking than the primary brake lining.
- How is the primary brake lining different from the secondary lining?
- The diagram notes the primary brake lining is thinner, shorter, and sometimes made of a different material than the secondary brake shoe lining.
- Which shoe faces the front of the vehicle?
- The diagram's FRONT arrow shows the primary brake shoe is toward the front of the vehicle, with the secondary shoe toward the rear.
- Where is the wheel cylinder located in the drum brake assembly?
- The wheel cylinder sits at the top of the assembly between the tops of the primary and secondary brake shoes, near the anchor pin.
- What components are labeled in this drum brake diagram?
- Labeled parts include the anchor pin, primary and secondary shoe return springs, primary and secondary brake shoes, wheel cylinder, two retaining springs, backing plate, self-adjuster, and brake drum.
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