The Hendrickson S-30594-8L or S305948L is an S-cam brake camshaft, listed as a 1.625 S-cam with a 28-spline end. In an air-actuated drum brake, the camshaft turns through a short arc when the slack adjuster moves, and its S-shaped head pushes the shoe rollers outward so the linings press against the drum. When the cam profile or the bushings wear, the shoes contact the drum unevenly, braking is delayed and the linings wear out quickly. A genuine Hendrickson part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
S-cam brake camshaft
Listed as a 1.625 S-cam
28-spline end
S-shaped head pushes the shoe rollers outward against the drum
Worn cam profile or bushings cause uneven shoe contact and quick lining wear
