DEM 125 Heavy Vehicle Drive Trains, 3 hours (1-4-0) This course introduces the operating principles of mechanical medium and heavy-duty truck transmissions. Topics include multiple counter shafts, power take-offs, slider idler clutches, and friction clutches, mechanical transmission power components, and hydraulics. Upon completion, students should be able to diagnose, inspect, and repair mechanical transmissions. (1-4-0) This course provides instruction in the disassembly, inspection, and rebuilding of diesel and heavy- duty gas engines. Emphasis is placed on the manufacturer’s standards and factory recommended service tools and equipment. Upon completion, students should be able to disassemble, inspect, and rebuild engines according to the manufacturer’s specifications. DEM 126 Advanced Engine Analysis, 3 hours DEM 127 Fuel Systems, 3 hours (1-6-0) This course is designed to provide practice in troubleshooting, fault code diagnosis, information retrieval, calibration, repair and replacement of fuel injectors, nozzles, and pumps. Emphasis is placed on test equipment, component functions, and theory. Upon completion, students should be able to diagnose, service, and repair fuel systems and governors.

DEM 130 Electrical/Electronic Fundamentals, 3 hours


This course introduces the student to basic Electrical/Electronic concepts and fundame ntals. It provides the principles of electricity, magnetism, and Ohm’s Law. Emphasis is placed on batteries, starting, charging, and lighting circuits, which includes series, parallel, and series-parallel circuits. Troubleshooting and repair of wiring harnesses, starting motors, charging systems, and accessories are included along with the computerized monitoring of vehicle systems. Upon completion, students should be able to identify components, test systems, and repair minor electrical problems according to the manufacturer’s literature. CORE (1-4-0) This course introduces the theory and principles of medium and heavy-duty steering and suspension systems. Topics include wheel and tire problems, frame members, fifth wheel, bearings, and coupling systems. Upon completion, students should be able to troubleshoot, adjust, and repair suspension and steering components and perform front and rear wheel alignments on medium and heavy-duty vehicles. DEM 135 Heavy Vehicle Steering & Suspension Systems, 3 hours DEM 137 Heating, Air Conditioning, and Refrigeration Systems, 3 hours (1-6-0) This course provides instruction in fundamentals, diagnosis, and repair of cab and cargo heating and refrigeration systems. Topics include operation theory, safety, maintenance, recycling and recovery procedures, recharging procedures, troubleshooting procedures, refrigerant leaks, and system repairs.

DEM 156 CDL License Test Preparation, 3 hours


Prerequisite: Permission of instructor This is a course designed to prepare students for the Alabama Commercial Driver ’ s License


2022-23 College Catalog and Student Handbook

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