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Diesel Mechanics Curriculum Details

Ashworth College can help you take the first step toward preparing for entry-level diesel mechanic jobs. The program is designed to help students prepare to sit for the Medium-Heavy Truck Certification Test upon completion of the program. Students can expect to learn about repairing diesel engines, brake systems, shop safety practices, and more.

Lesson Group 1: Introduction to Learning at Ashworth

Learning at Ashworth  

The goals and values of Ashworth College; time management; creating a realistic weekly and monthly study schedule; the nature and purpose of assessments; how to study effectively to prepare for and take an online examination; developing the skill sets necessary for success in the twenty-first century.

Lesson Group 2: Orientation Diesel Mechanics/Heavy Truck Maintenance

Introduction to Diesel Truck Mechanics  

As you start reading this first lesson, you’ll learn about the growing diesel-engine-powered vehicle repair field and the increasing need for professional technicians. You’ll discover the many exciting career opportunities that are available to skilled technicians. Finally, you’ll learn about the basic operation of engines and other vehicle systems.


  • Analyze the job roles, components, and mechanics associated with diesel truck maintenance

Lesson Group 3: Foundation and Safety

Diesel Truck Operation, Safety, and Technology  

This course will introduce you to the operations of diesel engine, including how the diesel cycle differs from other types of engine cycles, and how (and why) the diesel engine has been a very popular choice for powering such a wide range of vehicles. The course includes several major diesel engine components and moves on to cover shop safety and tools.

You will learn about the different types of work environment where diesel technicians work, like the trucking industry, diesel-powered locomotive repair shops, heavy-equipment repair shops, nautical engine overhaul and maintenance facilities, and many other industries employ technicians who maintain and repair diesel engines.

You will also learn about the work performed by diesel technicians which vary and they involve the knowledge of various vehicle components, including several engine systems and accessories. When a problem with an engine accessory occurs, they’ll often be required to locate and solve the issue.


  • Analyze the principles, components, and classifications of the diesel engines
  • Identify the safety precautions, protective gears, and tools required by the diesel technicians

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Program Description

The Diesel Mechanic program covers the operation, performance standards and inspection procedures of vehicle systems that incorporate diesel engine technologies. Students will learn heavy-vehicle repair procedures for all major vehicle systems, as well as foundations skills in tool usage and safety. This program also introduces students to specialty systems typically associated with heavy truck repair and maintenance such as hydraulics.

Program Objectives

After completing the Diesel Mechanic training program, students will be able to:

  1. Identify the hand and power tools, lift equipment, and diagnostic equipment used to evaluate, repair, and maintain diesel-engine vehicles and explain the procedures required for the safe use of each item.
  2. Describe the various engine types, body styles, and drive systems that are used to diesel vehicles.
  3. List the steps that must be followed during a standard vehicle inspection and describe the specifications that determine safe-vehicle conditions during each step.
  4. Identify and describe the standard parts of the engine, lubrication and cooling system, electrical/electronic system, steering and suspension systems, drive trains, and HVAC systems as well as the hydraulics systems used in heavy vehicles.
  5. Describe the parts, tools, and processes used to disassemble, rebuild, and reassemble a diesel engine.

Getting your career into high gear

Ashworth College API Program Name Career Diploma program help you develop the confidence you need to reach for your career goals because we integrate job search prep into your studies. With the online tools at the Ashworth College Central Network, you’ll get step-by-step guidance as you create polished, professional resumes and letters. After you graduate, you’ll keep your Ashworth College Central Network account so you can revisit the tools any time you need to make a good impression on a potential employer. Learn more about it at the Career Services page.

Advance your career in our online API Program Name program. Call 1-800-957-5412