Introduction to the operation and theory of heavy-duty vehicle power train, including transmissions, clutches, drive shafts, differential carriers, axles, tracks, undercarriages, clutch-type steering systems, and final drives. Principles of torque multiplication and bearing adjustment are included, along with shop safety and selecting the correct tooling. 4 Credits (4 Lecture) Corequisite(s): DSM141 and DSM142 or DSM141 and DSM155.