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Diesel Technology, AAS Degree
Diesel technicians use a variety of skills to prepare, diagnose, repair, and maintain diesel engines and other truck systems. To keep engines running smoothly, a diesel technician uses test equipment to evaluate and troubleshoot running engines. From there, they determine what adjustments are necessary or what parts need to be replaced to restore the engine to top performance. In addition to the engines, diesel technicians also need comprehensive knowledge of electrical systems, transmissions, and air conditioning. |
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Semester |
Course Title |
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First Semester
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Preventive Maintenance Theory |
2 |
Covers entry level technician inspection tasks designed to introduce students to correct procedures and practices of vehicle inspection. Major areas to be covered include: engine system, cab and hood, electrical/electronics, frame and chassis, and the suspension and steering systems. Corequisite: DM 115 |
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Preventive Maintenance Lab |
2 |
Hands-on experience in performing preventive maintenance inspections on live vehicles. Corequisite: DM 114 |
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Basic Electrical Theory |
2 |
Covers the basics of electrical theory. Major areas to be covered include: proper multi-meter usage, electron and electrical theory, basic electrical component function and operation, series circuits, parallel circuits, diode and transistor operation, and construction of simple circuits. Corequisite: DM 117 |
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Basic Electrical Lab |
2 |
Hands-on experience in use of the multi-meter, measuring current, resistance, and voltage. Students will also construct and study the operation of basic electrical circuits. Corequisite: DM 116 |
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Truck Electrical Systems Theory |
2 |
Covers the operation and testing of heavy-duty starting and charging systems, control systems, 12 volt, and 12/24 volt systems, alternator and starter diagnosis and repair, schematic reading, proper use of test meters, tractor-trailer wiring systems, circuit operation of gauges, lights, and accessories. Corequisite: DM 119 |
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Truck Electrical Systems Lab |
2 |
Hands-on experience using mock-ups and live work, working with and testing heavy duty starting and charging systems, control systems, 12 volt, and 12/24 volt systems, alternator and starter diagnosis and repair, schematic reading, proper use of test meters, tractor-trailer wiring systems, circuit operation of gauges, lights, and accessories. Corequisite: DM 118 |
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General Psychology |
3 |
Provides the student with an introduction to the basic psychological processes underlying human behavior. Topics include the functions of the brain amd nervous system, the characteristics of sensation, perception and altered states of consciousness, learning and memory, the nature of thinking skills and intelligence, theories of motivation, emotion and personality, a survey of psychological disorders and approaches to therapy, social/interpersonal relations, and practical applications. |
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Second Semester
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Computer Essentials |
2 |
Designed to enable students with little or no computer experience to acquire a basic understanding of the personal computer. This course involves the study of computer basics such as hardware, operating systems, and file management, using the Internet for research, word processing, and spreadsheets. |
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Air Conditioning Theory |
2 |
Covers the basic air conditioning systems, components, operation and control systems used on automotive, truck and implement air conditioning systems. Prerequisite: must pass ASE-refrigerant recovery quiz; Corequisite: DM 121 |
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Air Conditioning Lab |
2 |
Hands-on experience in refrigerant recovery, system diagnosis and repair and system charging. Covers cooling, cycle theory and system component diagnosis, adjustment and replacement. Includes proper procedures for charging, recovering and recycling refrigerants. Corequisite: DM 120 |
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Electronic Fuel Theory |
2 |
Covers the operational theory of electronically controlled fuel systems and the procedures for troubleshooting and reprogramming the engine onboard computer systems. Corequisite: DM 215 |
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Electronic Fuel Lab |
2 |
Hands-on experience in testing and programming engine computer systems, fault diagnosis and adjustment. Corequisite: DM 214 |
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Hydraulics Theory |
2 |
Covers hydraulic theory, fluids, filters, hose and piping, pumps, motors, valves, seals, testing and troubleshooting. Corequisite: DM 225 |
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Hydraulics Lab |
2 |
Hands-on experience with hydraulic components including pumps, actuators, and control valves. Also introduces students to using pressure gauges and flow meters to observe system operation. Corequisite: DM 224 |
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Composition |
3 |
English Composition will help develop proficiency in writing concise, coherent essays, and in using correct English. Several modes of discourse will be explored and good grammar skills are required. This course will improve the student's critical thinking skills as it provides students with practice in all stages of the writing process: planning, supporting, rewriting, analyzing, proofreading, and editing. This course will also require critical reading and writing. Prerequisite: Placement Assessment |
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Third Semester
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Diesel Theory |
4 |
Covers the theory of diesel truck engine construction and operation, disassembly, component rebuilding, sleeve and piston installation, main and rod bearing installation, engine assembly, timing, priming, adjustments, starting, testing, and engine evaluation. Corequisite: DM 211 |
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Diesel Lab |
4 |
Hands-on lab covers diesel truck engine overhaul, including complete disassembly, component inspection and repair or replacement, testing and measurements for parts re-use, re-assembly, and start-up. Corequisite: DM 210 |
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Fuel Theory |
2 |
Covers the theory and operation of the various diesel fuel delivery systems used by the major engine companies. Covers the theory and operation of fuel injection pumps and nozzles as well as the tune-up procedures for Caterpillar, Cummins and Detroit Diesel engines. Corequisite: DM 221 |
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Fuel Lab |
2 |
Hands-on study of the various diesel fuel delivery systems used by the major engine companies, as well as installing and timing injection pumps, testing and adjusting nozzles and learning and performing the recommended tune-up procedures for Caterpillar, Cummins, and Detroit Diesel engines. Corequisite: DM 220 |
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College Math |
3 |
A course covering the concepts and applications of mathematics, that includes: the arithmetic order of operations, percent problems, descriptive statistics and graphing, algebraic manipulations, solving linear equations, formula rearrangement, word problems, measurement, and applied plane and solid geometry. This course satisfies the institution's general education requirements for mathematics, but is not a transfer course. Prerequisite: Placement Assessment |
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ENGL 201- Technical Writing or SPCM 101T Fundamentals of Speech |
3 |
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Fourth Semester
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Brakes Theory |
2 |
Covers the design, construction, and operation of medium and heavy-duty truck hydraulic and air brake systems and components; including compressors, governors, air-lines, valves, controls, brake chambers, linkages, and foundation brakes. Corequisite: DM 131 |
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Brake Lab |
2 |
Covers the overhaul of medium and heavy-duty hydraulic and air brake systems. Students will test, remove, repair, and/or replace the separate system components on actual customer trucks or school training mock-ups. Corequisite: DM 130 |
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Suspension Theory |
2 |
Covers truck steering systems, including manual and power steering gears, steering linkage and adjustment, alignment and overhaul of system components. Students will also study truck suspension systems, which will include single and multi-leaf springs, torsion bar, and air ride systems. Corequisite: DM 133 |
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Suspension Lab |
2 |
Hands-on lab covering troubleshooting, testing, adjusting, and overhauling medium and heavy-duty truck steering and suspension systems. Students will test, remove, repair, and/or replace the separate system components. They will also perform complete tire alignment checks and adjustments. All work will be done on actual customer trucks or school training mock-ups. Corequisite: DM 132 |
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Power Train Theory |
2 |
Covers the theory of medium and heavy-duty truck transmissions, differentials, clutches, and drivelines. Students will study system troubleshooting and repair, component removal and installation, overhaul procedures, and adjustments. Also covers gear ratios, component power handling ratings, and proper driveline angles. Corequisite: DM 231 |
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Power Train Lab |
2 |
"Hands-on lab covers the removal, overhaul, and installation of medium and heavy-duty power train components. Students will work on single and double disc clutches, single and twin counter shaft transmissions, forward and rear differentials, axles, and drive lines. Work will be done on mock-up and live work according to the manufacturer's specifications. Corequisite: DM 230 |
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Social Science Elective |
3 |
Social Science Electives Include: ECON 201T - Economics; SOC 150T - Social Problems; or SOC 250T - Marriage and the Family |
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