Diesel and Heavy Equipment Technology


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Course Listings


DHET 100ESSENTIALS OF MECHANICS5.0 CRRE   S, F

Develops beginning mechanical skills and knowledge essential to successful completion of the automotive and/or diesel technology program. Includes shop safety, fasteners, measurements, cutting tools, lifting, tool usage, shop orientation, manuals (including computer retrieval systems), bearings and seals, and special emphasis on preventative/predictive maintenance. This is an introductory course for beginning students of Automotive or Diesel Technology. Course can be waived if student has completed principles of technology and auto program in high school. (was ADT 100)

Prerequisite: None


DHET 101ELECTRICAL SYSTEMS I5.0 CRRE   W

Introduces the basics of electricity through the electrical schematic use and basic troubleshooting and repair. Emphasizes the measurement of volts, amperes, and ohms in various types of circuits using a digital multi-meter. Application and testing of various circuit components such as switches, relays and circuit protection devices are also covered. Prerequisite: None

Prerequisite: None Concurrent requirements: DHET 102 or instructor permission.

Concurrent requirements: DHET 102 or instructor permission.


DHET 102ELECTRICAL SYSTEMS II10.0 CRRE   W

Presents brief review of the theory of electricity. Covers theory, diagnosis and repair of low voltage systems (12V), including batteries, starting systems, charging systems, instrumentation and warning devices, lighting systems, power accessories, (e.g. power windows, power seats), and computer operation and circuit analysis. Also covered are high voltage energy, distributorless, and breaker point ignition systems. (was ADT 102)

Prerequisite: DHET 101 or instructor permission.


DHET 104VEHICLE CLIMATE CONTROL8.0 CRRE   S, Sp

Covers the theory of operation, design, diagnosis and repair of both manual and automatic heating, ventilation and air conditioning systems (HVAC) used in automobiles, trucks and heavy equipment. Emphasis is on component identifications, performance testing, recovering, evacuation and recharging. Covers materials necessary to pass ASE (A7) test.

Prerequisites: DHET 102 or instructor permission.


DHET 111HYDRAULIC BRAKES5.0 CRRE   Sp

Covers the theory of hydraulics, fundamentals of manual, power, drum, and disc brake systems. This is a first-year course and may be waived with the instructor permission. (was ADT 111)

Prerequisite: None


DHET 115AIR BRAKE SYSTEMS5.0 CRRE   Sp

Offers training on vehicle air brake systems with coverage of compressors, valves and brake foundation. Emphasis will be placed on maintaining Federal Motor Vehicle Safety Standards.

Prerequisite: None


DHET 125HEAVY DUTY CHASSIS MAINTENANCE5.0 CRRE   Sp

Offers training in the repair, maintenance, and diagnosis of heavy equipment frames, steering, suspension, wheels, tires and undercarriage.

Prerequisite: None


DHET 141HYDRAULICS I4.0 CRRE   F

Presents the basic principles, operation, and maintenance of mobile hydraulic systems. Topics include component function, application, testing, and troubleshooting. Prerequisites: None.

Prerequisites: None. Concurrent requirements: DHET 142 or instructor permission.

Concurrent requirements: DHET 142 or instructor permission.


DHET 142HYDRAULICS II6.0 CRRE   F

Provides a more in-depth look at hydraulic pumps, valves, and actuators in mobile hydraulic systems. Emphasizes testing, diagnosis and the repair of hydraulic systems.

Prerequisite: DHET 141 or MFG 140 or concurrent enrollment.


DHET 210DIESEL ENGINE REBUILD16.0 CRRE   W

Studies the operation, maintenance, repair, and overhaul of diesel engines used in heavy equipment. Required course for all Diesel/Heavy Equipment Technology majors. (was ADT 223)

Prerequisite: DHET 100.


DHET 215HEAVY DUTY ENGINE PERFORMANCE15.0 CRRE   F

Studies factors and components that affect diesel engine performance, fuel economy, and exhaust emissions. Includes fuel system and valve train problem diagnosis, maintenance, repair, and adjustment. (was ADT 226)

Prerequisite: DHET 102 or instructor permission.


DHET 216AUTO/DIESEL TUNE UP AND PERFORMANCE5.0 CRRE   F

Provides a study of the diesel fuel systems and electronic engine controls found in modern high speed diesel engines. This course will introduce students to the theory of fuel system operation, troubleshooting and the servicing of modern high speed diesel engines found in light and medium duty vehicles, cars and boats.

Prerequisite: DHET 102 or instructor approval.


DHET 220HEAVY DUTY POWER TRAINS10.0 CRRE   Sp

Provides study of the principles of operation, maintenance, problem diagnosis, and repair of clutch systems, manual transmission, automatic transmission, power take-off, transfer cases, drive lines, differential assemblies and final drives used in trucks and heavy equipment. (was ADT 206)

Prerequisite: None


DHET 228TRUCK DRIVING/TECHNICIAN4.0 CRRE   S, F, W, Sp

Provides instruction to prepare students for the Washington State Class A commercial driver's license exam. 2-credit option is intended for students who have already received a portion of the required classroom training in truck systems. 4-credit option provides the Washington State required 40 hours of classroom training for individuals who have not completed the required classroom training in truck systems.

Prerequisites: None.


DHET 229COMMERCIAL TRUCK DRIVING OPERATION6.0 CRRE   S, F, W, Sp

Provides the required 120 hours of truck driving skill development to prepare students for the Washington State Class A commercial driver's license exam.

Prerequisites:DHET 228. Student must have DOT physical and pass the DOT alcohol and substance abuse test. Student must have a commercial learner's permit.


DHET 230ADVANCED SHOP PRACTICES5.0 CRRE   Sp

Provides a review of key skills learned in previous diesel program courses and reinforce industry shop practices. Emphasis will be placed on time management and documentation. A course for Diesel AAS students.

Prerequisite: Completion of 60 DHET credits.


DHET 240FLUID POWER/ELECTRICAL THEORY AND DESIGN5.0 CRRE   NSF

Explores the theory and design principles of fluid power and electrical systems. Various mathematical formulas will be used to help students understand the how and why systems perform as they do. Students will be taken through the design process for a task of their choosing. This process will include force estimation and measurement, calculating component specifications and schematic drawing.

Prerequisites: Math 078/079


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