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STRUCTURE AND OPERATION

35A-24

  • As the brake drum-to-lining clearance grows, the amount of piston travel, and therefore the amount of lever trav- el, becomes greater.

  • When the lever travels far enough to turn the adjuster, the threads on the adjuster causes the adjusting screw to advance. As a result, the brake shoe extends.

  • As the brake pedal is released, the ad- juster remains in the new position while the lever retracts by one tooth. The brake drum-to-lining clearance is now correctly adjusted.

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