How to Replace S-Cams And Bushings on semi trailer (step by step) - YouTube
Hendrickson S-28891 Cam Tube Service Kit for INTRAAX & VANTRAAX 15" Air Brakes, After 4/2001: AnythingTruck.com, Truck & Trailer Parts and Accessories Warehouse
Truck and Trailer S-Camshaft Quick Identification Guide
S&S Cycle® Raw 570G Gear Drive Cam Kit for 2007-2017 Harley Models with Twin Cam Engine; 2006 Dyna Glide Models, with Gears, Bearings, and Gasket - Made in U.S.A. - 33-5267