S-31110-11R or S3111011R is a genuine Hendrickson S-cam brake camshaft, catalogued as an Hxs, 12.25, 28 spline camshaft. An S-cam turns inside the drum brake and pushes the rollers on the brake shoes outward so the linings press against the drum, converting the straight-line push from the air chamber into rotation.
Uneven or tapered lining wear, or a pop or clunk from the wheel when the brakes first apply, points to a worn camshaft or bushing. With excess play the cam head can wobble and load the shoe at an angle, so the lining no longer meets the drum squarely. A genuine Hendrickson part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Hendrickson S-cam brake camshaft
Catalog designation: S-Cam, Hxs, 12.25, 28 spline
Turns the cam head against the shoe rollers to apply the drum brakes
Uneven lining wear or a pop or clunk at brake application points to a worn camshaft or bushing
