This course builds upon the foundational understanding of mechanical sub systems obtained in Maintenance Fundamentals. The topics focus on the mechanical portions of machines such as control linkages, gears, cams, sprockets, chains, pulleys, springs, transmissions and bearings. Friction and lubrication topics are covered in detail. Environmental systems such as heating, and air condition systems are explored. Mechanical portions of braking, suspension and steering systems are also included. The 100-hour Maintenance Fundamentals course is a prerequisite for this course.