Diesel Mechanic Training Curriculum Online

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Lesson Group 1: Orientation: Ashworth College Career Program

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.

Careers for Mechanics and Technicians  

An overview of potential career paths and professional development available for students who formally develop their mechanical and technical skills. Includes a summary of math and science concepts important to mechanics as well as applications of modern technologies in the mechanics workplace. The lesson concludes with an overview of general workplace safety practices and applications of personal protection equipment.

Lesson Group 2: Foundation and Safety, Part 1

Safe Work Practices and Emergency Procedures  

Review of common safety practices and materials hazards associated with vehicle repair as well as the techniques and equipment used to protect technicians.

Tools and Equipment for the Automotive Technician  

This lesson also covers the identification and applications of a wide range of hand and power tools and tools used during vehicle repair and assembly procedures.

Lesson Group 3: Foundation and Safety, Part 2

Specialty Tools and Equipment  

Students will continue their exploration of tools and equipment focusing on power tools, diagnostic equipment, measuring tools and lifting equipment.

Automotive Engine Basics  

The final segment of this lesson group introduces students to the basic terminology and configurations of vehicles, engines, and drivetrains. Students will also learn the basic elements of the vehicle inspection process.

Lesson Group 4: Heavy Vehicle Brake Systems


Detailed coverage of the braking systems commonly found in heavy equipment including, air, hydraulic, and power-assisted systems. This lesson also reviews anti-lock braking theory and systems in addition to repair and maintenance procedures for wheel bearings and seals.

Lesson Group 5: Heavy Vehicle Steering and Suspension

Steering and Suspension  

Students will learn about both the cab and chassis components found in steering and suspension systems. Lesson coverage includes front and rear suspensions, air, beam, and spring assemblies, as well as both manual and power steering construction, repair and maintenance.

Lesson Group 6: Heavy Vehicle Electrical and Electronics Systems

Electrical and Electronics  

Applications of basic electrical circuit theory to heavy vehicle charging, lighting and electronics. Students will learn diagnostic techniques and the applications of diagnostic equipment as well as standard servicing practices for common electrical systems as well as modern computer controls.

Lesson Group 7: Heavy Vehicle Engines, Part 1

Engine Operation, Components and Cooling  

Covers the components and assembly of heavy vehicle engines from the core block components like cylinders, crankshafts and bearings combined with standard diesel engine fuel systems and electronic fuel injection. Standard disassembly and analysis procedures are also reviewed.

Lesson Group 8: Heavy Vehicle Engines, Part 2

Engine Fuel, Exhaust, Emissions and Tune-up  

Continued instruction on the systems used in heavy vehicle engines focusing on engine performance diagnostics, emissions, air induction and exhaust. The lesson concludes with coverage of lubrication systems as well as common preventive maintenance and tune-up procedures.

Lesson Group 9: Heavy Vehicle Drivetrains

Manual and Automatic Transmissions  

This lesson covers instruction on the configuration and operation of both standard and automatic transmissions commonly used in heavy vehicle applications.

Lesson Group 10: Heavy Vehicle Heating and Air Conditioning Systems

HVAC for Heavy Vehicles  

Students will learn about the components and systems used for climate control in heavy vehicles. Lesson coverage also provides students with a detailed summary of HVAC theory and principles.

Lesson Group 11: Heavy Vehicle Hydraulics


Applications of hydraulics components and principles to systems employed most commonly in heavy vehicles. Includes the repair and maintenance of hydraulic lines and connectors as well as the safe work practices that must be observed when working on hydraulic systems.

Lesson Group 12: Heavy Vehicle Preventive Maintenance and Inspection

Vehicle Maintenance and Inspection Procedures  

Students will apply their knowledge of heavy vehicle systems to the practices used for complete vehicle inspections and preventive maintenance. Specific inspection topics include brakes, tires/wheels and under vehicle procedures and also cabs, cargo-handling devices, engine compartment, and exterior vehicle inspection.

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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.

Advance your career by achieving Diesel Mechanic training curriculum that fulfill the needs of the industry. We'll give you the practical skills to succeed. Call 1-800-957-5412 or enroll online today.