Prepare your truck to be Ready for the Road Ahead™, with the Meritor 1.5" Cam / 28-Spline / 5.5" Automatic Slack Adjuster that offers the ideal amount of tension in the brake linkage. This replacement component checks the amount of slack between the brake shoe and the brake drum, and automatically adjusts the distance as needed to reduce overall wear. Manufactured with a compensating mechanism that modifies the position of the pushrod as the brakes wear down. FleetPride is your First Click in Heavy Duty®.