Diesel Heavy Equipment Technician Technical Diploma

Program Code: 314126

Graduates of this technical diploma program are equipped to diagnose, service, and repair a variety of diesel powered equipment. Typical careers include construction equipment technician, engine technician, farm equipment technician, fuel injection technician, service technician, and truck driver/diesel technician. This program is accredited by The AED Foundation.

Follow Your Path

Some credits from this technical diploma apply toward the following associate degree(s):
• Students completing this technical diploma may also earn the Diesel Equipment Technology associate degree (104121) after completing four additional courses.


Employment Potential

Construction Equipment Technician: diagnoses, services, and repairs a variety of construction equipment such as track type tractors, wheel loaders, and back hoe loaders.

Engine Technician: diagnoses and repairs diesel engines.

Farm Equipment Technician: diagnoses, services, and repairs a variety of diesel-powered agricultural equipment.

Fuel Injection Technician: diagnoses, services, and repairs fuel injection systems.

Service Technician: performs preventive maintenance and regularly scheduled maintenance on equipment to keep it in service.

Truck Driver/Diesel Technician: owns or operates a small fleet and wants to perform his/her own regular and preventive maintenance.


Requirements for Program Entry

• Completed application.
• High school transcript or equivalent . ( For a list of equivalents, go to
• Students should have mastered basic math skills
• To be admitted to this program, learners must achieve a prior cumulative high school or college grade point average of 2.6 or higher OR a satisfactory academic skills assessment score. College grade point average must be based on 15 credits or more. To learn more about starting this program, please contact an academic advisor at (920) 498-5444 or (888) 385-6982.

Program Availability

FULL TIME Spring 2020 Summer 2020 Fall 2020
Green Bay --- ---
Marinette --- ---
Sturgeon Bay --- ---

Application Checklist

Students following the study plan below will complete the Diesel Heavy Equipment Technician technical diploma in the number of semesters shown.
10-890-101 COLLEGE 101 ...Students will utilize digital tools and resources to assess, explore, practice, apply, and evaluate both employability and learning skills. By establishing NWTC cultural values as hallmarks of success in academic, career, and personal settings the course encourages reflective, personalized development of a growth mindset and emphasizes the importance of making wise choices. To maximize the return on investment, students should take this course in their first semester as it identifies key expectations (hidden rules) of higher learning and professional employment.
10-412-125 TRANSPORTATION SERVICE OPERATIONS ...introduces the auto and diesel shop environment, safety and the use of basic hand/power tools in accordance with industry standards, use of manufacturer's service information and literature, handling hazardous materials, and emphasizes general shop safety and general shop practices.
10-412-100 DIESEL LAB OPERATIONS ...diesel shop safety, basic equipment operation, rigging and lifting, hand and power precision tools, fasteners and hazard material handling procedures.
10-412-170 WELDING TRANSPORTATION 1 ...focuses on welding and cutting safety; develops skills in welding and cutting of metals used in the transportation trades. Methods of welding include gas metal arc welding (MIG) in the horizontal, vertical, and overhead positions. Methods of cutting include oxy-fuel and plasma arc cutting of metals. Students will learn to set up and maintain welding equipment and weld and cut a variety of types and thicknesses of materials commonly used in the transportation trades.
10-412-171 TRANSPORTATION WELDING 2 ...This course provides the opportunity for the learner to develop the knowledge, skills, process, and understanding of GMAW (MIG) welding equipment set-up, use, and maintenance and GMAW (MIG) welding on various thicknesses of steel in the flat, vertical, horizontal, and overhead position. (Corequisite: 10-412-170, Intro to Transportation Welding)
10-412-108 INTERNAL COMBUSTION ENGINE TECHNOLOGY - INTRO TO ...basic internal combustion (IC) engine types, IC engine classifications and applications, IC engine theory and operation, IC engine construction and careers in IC engine service and repair.
10-412-102 DIESEL ENGINE SERVICE FUNDAMENTALS ...diesel engine theory and service procedures; lubrication, cooling, fuel intake and exhaust systems, bearings, seals and basic diesel engine diagnosis; safety.
10-412-153 INTRO TO ELECTRICAL SYSTEMS ...focus on the theory of electricity. This will include studying Ohms, Kirchoff's, and Newton's Laws and how they apply to the circuits on various electrical systems on a vehicle. Students will apply these theories to troubleshoot simple circuits.
10-412-103 DIESEL ELECTRICAL SYSTEMS 1 ...electronic components, electrical safety, storage batteries, charging and starting systems. Safety. (Corequisite: 10-412-153, Introduction to Electrical Systems)
10-804-134 MATHEMATICAL REASONING ...This course provides an alternative pathway to earning credit for a college level liberal arts mathematics course. All college students, regardless of their college major, need to be able to make reasonable decisions about fiscal, environmental, and health issues that require quantitative reasoning skills. An activity based approach is used to explore numerical relationships, graphs, proportional relationships, algebraic reasoning, and problem solving using linear, exponential and other mathematical models. Students will develop conceptual and procedural tools that support the use of key mathematical concepts in a variety of contexts. This course is not designed for Science, Technology, Engineering, or Math (STEM) students and/or others who require calculus. (Prerequisite: Accuplacer Arithmetic score greater/equal to 65 AND Reading score greater/equal to 50; OR ACT Math score greater/equal to 15 AND ACT Reading score greater/equal to 15; OR prep courses-contact an academic advisor 920-498-5444)
10-412-104 DIESEL CHASSIS, SUSPENSION, AND BRAKES ...theory and procedures in repairing and maintaining vehicular/off highway steering systems, heavy-duty axles, suspension systems, wheels and tires, and coupling systems. Safety. (Prerequisite: 10-412-100, Diesel Lab Operations)
10-412-105 DIESEL HEAVY EQUIPMENT PREVENTATIVE MAINTENANCE...theory and procedures in repairing and maintaining vehicular/off highway clutches, brakes, wheels and rims, steering, suspension, electrical, air systems, and hydraulic systems. Safety. (Prerequisite: 10-412-100, Diesel Lab Operations)
10-412-123 DIESEL ELECTRICAL SYSTEMS 2 ...will cover but not be limited to: electronic components, electrical safety, storage batteries, charging and starting systems. Knowledge, skills and understanding required for employment in the diesel field. (Prerequisite: 10-412-103, Diesel Electrical Systems 1)
10-412-146 POWER GENERATION ...this course is designed to familiarize diesel technician students with the basics of home standby and commercial generators. Electrical fundamentals, alternators, permanent magnet generators, circuit breakers, generator switchgear, auto transfer switches and automatic voltage regulators will be covered emphasizing home standby and commercial use generators.
10-412-180 DIESEL HEAVY EQUIPMENT INTERNSHIP ...the application of theory, skills, and techniques in the diesel heavy equipment technician profession. (Prerequisite: Instructor approval required)
10-412-124 DIESEL EQUIPMENT & ENGINE SYSTEMS SOFTWARE ...engine, drive train, chassis, and cab computer systems software.
10-412-106 DIESEL ENGINE SYSTEMS ...basic internal combustion (IC) engine types, IC engine theory and operation, IC engine construction and components. Practical experience and procedures for maintenance and repair of engine systems including valve train and fuel systems including pumps, governors, injectors, unit injectors, unit pumps, timing gears. High-pressure common rail theory and operation; safety.
10-412-136 DIESEL MOBILE HYDRAULICS SYSTEMS hydraulics system components safety, principles of operation, diagnosis, and service.
10-412-137 DIESEL SCHEMATIC INTERPRETATION ...electronic/hydraulic schematics, applications of schematics, system similarities, components, review of systems operation, practical applications in diagnosing system problems, use of special test equipment/schematics to solve problems. (Prerequisite: 10-412-123, Diesel Electrical Systems 2)
10-412-138 DIESEL TRACK DRIVE SYSTEMS ...track shop safety, track drive component parts, system operation, inspection, system diagnoses, system repair, system service, and system maintenance. (Corequisite: 10-412-100, Diesel Lab Operations)
10-412-115 DIESEL EQUIPMENT SERVICE AND MAINTENANCE safety; service manuals; preventive maintenance forms; federal inspection policy; preventive maintenance for trucks, trailers, engine brakes/retarders, construction, and agricultural equipment; and electronic trouble shooting trees. (Corequisite: 10-412-100, Diesel Lab Operations)
10-419-169 HYDRAULICS TECHNOLOGY ...will cover the following but not be limited to hydraulics principles, system schematics and symbols, pumps, valves, cylinders, motors, accumulators, filters, reservoirs, hydraulic seals, fluids, maintenance, and safety rules.
10-412-107 DIESEL ENGINE TROUBLESHOOTING ...diesel engine troubleshooting steps, major check points when inspecting or operating a diesel engine, causes of poor engine performance and failure, perform engine diagnostic tests, dyno test an engine. (Prerequisite: 10-412-102, Diesel Engine Service Fundamentals)
10-412-110 DIESEL POWER TRAIN THEORY ...theory of power train components, coupling systems, hydraulic retarders, mechanical transmissions, drive shafts, final drives, gear reduction boxes, planetary gear sets, chain-type final drive, belt drive systems. (Prerequisite: 10-412-102, Diesel Engine Service Fundamentals)
10-412-113 DIESEL POWER TRAIN APPLICATIONS ...practical experience and procedures for maintenance and repair of power train components, coupling systems, hydraulic retarders, mechanical transmissions, drive shafts, final drives, gear reduction boxes, planetary gear sets, chain-type final drive, belt drive systems. (Prerequisite: 10-412-102, Diesel Engine Service Fundamentals; Corequisite: 10-412-110, Diesel Power Train Theory)
10-412-145 MOBILE HVAC; basics of air conditioning; refrigerants and oil; basic system and its functions; environmental safety practices; inspection, diagnosing, and using service tools. (Corequisite: 10-412-100, Diesel Lab Operations)
10-412-114 EMERGENCY POWER GENERATION ...governor fundamentals, control and monitoring systems, gaseous and diesel fuel systems, generator and system grounding, generator applications and interconnection of on-site synchronous generation with electric power systems. (Prerequisite: 10-412-146, Power Generation)
10-458-100 CDL LICENSE TRAINING ...this course is designed to prepare students for the Wisconsin Class A Commercial Drivers License (CDL) pre-trip inspection, air brake and skills test. Preparation will also be given for taking the State DOT written test including general knowledge, air brakes and combination vehicles. (Diesel Medium & Heavy Truck Associate Degree and Technical Diploma Prerequisite: 10-412-158, Chassis Sub-Systems)
Curriculum Note
The credit for 10-890-101, College 101, is an institutional Requirement for graduation. Consequently, it is not part of the program credit requirements, but must be passed with a C or better.

Program Outcomes

• Apply hydraulic systems fundamentals.
• Manage chassis, steering, and suspension systems.
• Explain diesel engine systems.
• Explain diesel engine service fundamentals.
• Describe the mechanics of track drive systems.
• Perform required preventative maintenance.
• Use welding and machine tools.
• Maintain brake systems.
• Analyze electronic/electrical systems.
• Manage heating - AC systems.
• Interpret schematic drawings.
• Comprehend power train systems.
• Diagnose engine systems.
• Service vehicle systems.


Study Abroad Opportunities

The International Programs staff continually seeks opportunities for students to travel abroad for educational experiences that may be offered in association with program courses. To find out more about which of your program courses may offer an opportunity during this academic year, contact your academic advisor or visit