How to become A Diesel Mechanic

• Diesel Technician
• Diesel Engine Mechanic
• Diesel Engine Technician

What do Diesel Mechanics do?

A Diesel Mechanic would typically need to:

• Perform maintenance, repair and replacement of malfunctioning components of vehicles and machinery that run on diesel fuel
• Read work orders and consult technical manuals to determine and execute the required plan of action
• Fine-tune a vehicle’s electrical and exhaust systems to comply with pollution regulations
• Use diagnostic software and scan tools to produce an accurate diagnosis of mechanical and electrical problems
• Use comprehensive checklists to examine a vehicle and ensure that all critical parts are working correctly; ensure the vehicle is clean and tidy
• Perform a thorough inspection of the engines, suspension, steering mechanisms, transmissions and brake/exhaust/vehicle lighting/emission control systems
• Complete primary care and preventative maintenance, including oil changes, brake checks, wheel alignments, tire rotations, and fluid flushes
• Maintain accurate and detailed records of vehicle diagnostic reports and service history for future reference
• Test-drive vehicles and equipment to check their performance; adhere to all rules and regulations of the inspection procedure
• Manage the inventory and restocking of parts and equipment; ensure the cleanliness of the workplace
• Discuss with clients the identified issues, work procedures and the cost involved; collaborate with the repair team and other team members

Diesel Mechanics typically work indoors in well-ventilated and well-lit but noisy repair shops. Occasionally, they work outdoors, on the wayside or a worksite, when servicing trucks.

Safety and health regulations are essential to prevent occupational injuries and health issues related to lifting heavy objects, handling greasy/dirty equipment, breathing in toxic fumes and working in awkward or uncomfortable positions.

Diesel Mechanics typically work full-time, with most putting in extra hours regularly. Repair shops often extend their service hours during evenings and weekends.  Additionally, they may have to work shifts in the truck and bus repair shops that offer 24-hour maintenance and repair services. 

Finding a new job might seem challenging. Diesel Mechanics can boost their job search by asking their network for referrals, contacting employers directly, using job search platforms, going to job fairs, leveraging social media, and inquiring at staffing agencies. Self-employment is possible. 

Diesel Mechanics are generally employed by:

• Automotive Repair & Maintenance Shops
• Diesel Equipment Manufacturers & Dealers
• Local Government Agencies
• Military
• Transportation Industry
• Agricultural Sector
• The Mining Industry
• Construction Sector
• The Oil and Gas Industry
• Commercial Generator Companies
• Wholesale Traders

Professional associations and organisations, such as the Association of Diesel Specialists (ADS), are crucial for Diesel Mechanics interested in pursuing professional development or connecting with like-minded professionals in their industry or occupation. Membership in one or more adds value to your resume while bolstering your credentials and qualifications.

• Work hours extend to evenings and weekends
• Physical strain and injury due to regular moving and lifting of heavy objects as well as crouching or sitting in awkward positions or cramped locations
• The need to frequently handle greasy and dirty vehicle components and tools
• Health issues due to loud noises and exhaust fumes in the work environment

Any academic program that a potential Diesel Mechanic takes up typically requires a period of supervised experience, such as an internship. You will enhance your mechanical aptitude, problem-solving skills and ability to write accurate reports on maintenance work.

Some employers may offer very popular three- to four-year-long apprenticeship programs to applicants without formal education. The trainee will begin with basic tasks such as cleaning parts, checking fuel and oil levels, and driving vehicles in and out of the shop. Proof of competence will enable them to move on to vehicle diagnostics and be certified as a journey-level Diesel Mechanic. 

Individuals who pursue repairing automobiles as a hobby or in the armed forces also have a fair chance of landing open job postings. Read about the profession, interview/job shadow established Diesel Mechanics to prove your commitment to course providers and prospective employers.

Generally, aspiring Diesel Mechanics attend community colleges and trade/vocational schools to obtain a two-year associate degree or an HND (Higher National Diploma), comprising a judicious classroom and hands-on learning mix. You could also pursue a six- to nine-month-long certificate program in diesel mechanics.

Accredited programs include diesel technology, diesel engine equipment and repair techniques, along with an interpretation of technical manuals and electronic diagnostic reports. 

Focus on mathematics, sciences, electronics, auto shop/automotive repair and physical education in high school.

Although not mandatory, professional certification demonstrates a Diesel Mechanic’s competence in diesel mechanics, typically through work experience, training and passing one or more examinations. 

Certification from an objective and reputed organisation can help you stand out in a competitive job market and increase your chances of advancement. Successful certification programs protect public welfare by incorporating a Code of Ethics.

An ideal program would teach the students about light vehicle diesel engines, transit/school bus diesel engines, medium-heavy truck diesel engines and expertise in diesel engine diagnosis. You may also specialise in repair areas such as drivetrains, electronic systems, and preventative maintenance and inspection.

Some education providers certify candidates with either two years of on-the-job training or one year of on-the-job training and a two-year degree in automotive repair. Check with your local professional organisation that offers certification in automotive service excellence for specific details.

Additional certifications in safety and air conditioning service will make your resume even more appealing to prospective employers.

Furthermore, most Diesel Mechanics require a commercial driver’s license (CDL) before they can test-drive buses and large trucks. Employers may also need you to pass a drug test before formalising the job offer.

Performance, experience, and the acquisition of professional qualifications drive the career progression of Diesel Mechanics who may become Shop Supervisors or Managers. You can also go into sales or open your own shop.

Candidates who complete formal education or an apprenticeship and obtain desirable certifications and licences have the best job prospects.

Continuing professional development (CPD) will help an active Diesel Mechanic build personal skills and proficiency through work-based learning, a professional activity, formal education, or self-directed learning. CPD is also required for the regular renewal of professional certifications in automotive service excellence.

Take advantage of employer-sponsored special training courses conducted by manufacturers and vendors to keep abreast of the latest techniques and equipment.

Customer Comes First

All expert Diesel Mechanics need to be detail-oriented, dexterous, and physically fit and possess exceptional mechanical, organisational, and troubleshooting skills. 

However, to build and retain a loyal customer base, you must be courteous and a good listener who can effectively communicate the issues and extent of repairs needed.

Earn more with Commissions 

Proficient and experienced Diesel Mechanics, especially those hired by truck fleet dealers and repair shops, can earn a commission in addition to their base salary. 

Manual and Automated Tools of the Trade 

Diesel Mechanics have a treasure chest of manual and power tools comprising pliers, ratchets, wrenches, screwdrivers, grinders, drills, welding equipment and lathes. 

In addition, they use more sophisticated equipment such as dynamometers to measure engine power and microprocessors to maximise fuel efficiency while minimising harmful emissions. Hand-held or laptop computers help these professionals diagnose problems and adjust engine functions.

Usually, employers provide the more expensive power tools and computerised equipment; you will amass your hoard of hand tools over time.

A Host of Opportunities

Diesel Mechanics may choose to work on various diesel engines or specialise in repairing and maintaining a specific type such as diesel truck engines or a particular repairing and maintaining system such as diesel engine starting systems.

Their passion could lead them to work in varied sectors. 

Diesel Mechanics employed in the transportation industry may work with transit/school buses, 18-wheeler/light-duty trucks, commercial cargo/cruise ships, trains and cars. The agriculture sector will see them working with tractors, ploughs, seeders, fertiliser spreaders, combines, balers and irrigation pumps.

Working in the construction industry could mean repairing and maintaining excavators, bulldozers, graders, cranes, pavers, road rollers, compactors, dump trucks and pile driving equipment. If you opt for the mining industry, you would be working with mining trucks and excavators, underground loaders, earthmovers and crushing equipment.

The oil and gas industry would need Diesel Mechanics to maintain their oil drilling and fracking equipment. In contrast, the military needs them for their military light utility vehicles and armoured combat earthmovers. 

Potential Pros & Cons of Freelancing vs Full-Time Employment

Freelancing Diesel Mechanics have more flexible work schedules and locations. They have full ownership of the business and can select their projects and clients. However, they experience inconsistent work and cash flow, which means more responsibility, effort, and risk.

On the other hand, a full-time Diesel Mechanic has company-sponsored health benefits, insurance, and retirement plans. They have job security with a fixed, reliable source of income and guidance from their bosses. Yet, they may experience boredom due to a lack of flexibility, ownership, and variety.

When deciding between freelancing or being a full-time employee, consider the pros and cons to see what works best for you.

A diesel engine is 20 per cent more thermally efficient than a gas engine, resulting in more power, torque and better fuel economy. 

It is no exaggeration that Diesel Mechanics touch our lives in innumerable ways; their unsung extraordinary skills help run the industries that make our lives pleasant, safe and exciting.

Get your hands dirty by working on vehicles as a hobby, and be ready for whatever comes your way at the workplace.