What Do Diesel Mechanics Work On?

Diesel mechanics and service technicians (also known as diesel technicians) inspect, repair, and overhaul buses and vehicles, as well as maintain and repair any sort of diesel engine.


  • Vehicle brake systems, steering mechanisms, transmissions, engines, and other components should all be inspected.
  • Components, parts, and other mechanical or electrical equipment that aren’t working properly should be repaired or replaced.
  • Change the oil, check the fluid levels, and rotate the tires as part of routine maintenance.

Diesel engines have become the industry standard for powering trucks and buses due to their efficiency and longevity. Many commercial boats, as well as certain passenger vehicles and pickup trucks, are powered by diesel engines, as are other heavy vehicles and mobile equipment, such as bulldozers and cranes.

To comply with environmental rules, diesel specialists perform major and minor engine repairs, as well as work on a vehicle’s electrical and exhaust systems.

As engines and other components employ more electronic systems to manage their performance, diesel engine maintenance and repair is becoming more complicated. Microprocessors are used in fuel injection and engine timing systems, for example, to increase fuel efficiency and reduce harmful emissions. Workers in most establishments detect issues and change engine functions using hand-held or laptop computers.

Pneumatic wrenches, lathes, grinding machines, and welding equipment are among the power and machine tools used by diesel technicians. Pliers, sockets and ratchets, and screwdrivers are regularly used hand tools.

Employers frequently give high-priced power tools and sophisticated equipment, while workers normally acquire their own hand tools over time.

Automotive service technicians and mechanics are discussed in the profile on automotive service technicians and mechanics.

The profile on heavy vehicle and mobile equipment servicing technicians describes technicians and mechanics who operate mostly on farm equipment, construction vehicles, and railcars.

The small engine mechanics profile describes technicians and mechanics who work mostly on motorboats, motorbikes, and small all-terrain vehicles.

What do diesel mechanics do?

Diesel mechanics (also known as diesel technicians) examine, repair, and rebuild diesel engines in trucks, buses, and other vehicles. They frequently operate on bulldozers, cranes, and dump trucks, to name a few.

What do heavy diesel mechanics work on?

Inspection, repair, and maintenance of vehicles and machines used in transportation, construction, and farming are the responsibilities of heavy diesel mechanics. Heavy diesel mechanics work on the most powerful machines and engines to guarantee that they are safe and efficient. When it comes to disassembling and reassembling big engines and other components, these technicians know how to troubleshoot issues and are always willing to get their hands dirty.

They could labor on a crane high in the air or in a field maintaining farm equipment. Heavy diesel mechanics might operate for a company fleet or as a sole proprietor in their own shop. Some go into government service and work on military equipment and tanks. Heavy diesel mechanics must be knowledgeable in a variety of areas, including fuel and brake lines, hydraulics, electrical systems, and more.

WhatYou Need to Know to Become a Heavy Diesel Mechanic

Heavy diesel mechanics use diagnostic tests to figure out what’s wrong with damaged systems and parts. Engines are retrofitted, faulty components are repaired, steering breaks are adjusted, hydraulic fluid is changed, breaks are changed, and worn-out parts are replaced. Parts of heavy vehicles or machinery may need to be disassembled and reassembled by mechanics in order to replace, repair, or adjust components.

Pneumatic wrenches, lathes, pliers, welding torches, hydraulic jerks, precision gauges, screwdrivers, and mallets are all used by heavy diesel mechanics on a regular basis.

They also put heavy-engine trucks through their paces before and after repairs. To discover problems or make adjustments, theonboard computer application is used.

JobSkills and Requirements

When it comes to hiring, employers look for a variety of abilities and attributes. Among them are the following:

Customer Service: Heavy diesel mechanics must interact with customers and discuss their vehicle problems, as well as possible solutions. As a result, a diesel mechanic should be approachable, communicative, attentive, and constantly accessible to answer a customer’s inquiries.

Dexterity: Diesel mechanics do their duties with their hands, which entails disassembling and reassembling vehicle components using both complex and simple tools. It is critical that kids have excellent hand-eye coordination.

Heavy vehicles and machines are difficult to understand and work with due to their complexity. A lost bolt or a snagged wire can be the root of a larger problem. When dealing with engines and their components, a diesel mechanic must have a keen eye for detail.

Heavy-equipment mechanics will need to know how to disassemble and reassemble an engine appropriately. A proficient heavy diesel mechanic should be able to recognize and use a variety of tools and technical equipment. They should be able to assess all components and diagnose problems using solid analytical skills.

Electrical Skills: A mechanic must be able to inspect onboard computers and related systems using complex software programs and computers. They should be able to decipher technical manuals and diagnostic reports as well.

Benefitsof Having a Formal Degree in This Field

A formal degree is frequently your best bet before beginning out in the field of heavy diesel mechanic. When beginning out as a heavy diesel mechanic, it’s critical to have a particular level of understanding, especially given the intricacies of diesel repair.

This is the primary reason why formal education is highly valued by many employers in this profession. A thorough training program that includes specialized tools and contemporary test equipment will help you gain a better understanding of practical diesel engine maintenance and repair as well as heavy vehicle subsystems.

You should be exposed to classroom education as well as have hands-on training in a genuine shop. You could discover the most effective diagnostic and repair techniques. If you choose a degree that provides you with a foundation in company management and customer service, you may have an added advantage. Heavy diesel mechanics who complete a one- to two-year post-secondary training program require less on-the-job training, which gives them an advantage when it comes to advancement.

Do diesel mechanics work on trucks?

Diesel technicians, often known as diesel mechanics, are in high demand. They work on automobiles, trucks, and anything else powered by a diesel engine. You’ll examine, maintain, and repair agricultural equipment, construction vehicles, boats, cranes, and even power generators as a Diesel Mechanic. Diesel mechanics ensure that the machines that allow us meet our most basic needs continue to function. Your work entails physically protecting machines that grow food and convey it to towns all around the country.

Is a diesel mechanic a good career?

Diesel mechanics may expect to earn an annual income of $50,200 on average. This works out to about $24.13 per hour. Pay varies depending on experience, location of employment, and state of residence. Local government diesel technicians make the most money, followed by those in wholesale commerce, car repair shops, and truck transportation.

Diesel mechanics who work for truck fleet dealers and repair shops may be paid a commission on top of their regular pay. While getting certification can help you boost your CV, depending on your organization and performance, it may also make you eligible for better pay.

Is diesel mechanic the career for you?

For people who are interested in mechanics and want to start a career that offers both gratifying work and a respectable entry-level salary, becoming a diesel mechanic is an excellent choice. Diesel mechanics may be the perfect job you’ve been looking for if you like to work with your hands, get joy from witnessing the results of your effort, and work in a profession that presents new challenges every day. Reach out to one of our professional Penn Foster Admission Specialists today at 1-888-427-6500 if you’re unsure how to get started with your training or have concerns about how online diesel mechanic classes work!

Being safety-oriented

We at Schneider believe that every accident can be avoided. We want our diesel mechanics to go home in the same condition as they arrived at work. This necessitates that our mechanics observe all business safety regulations and keep an eye on their coworkers. Wearing all of the necessary personal protection equipment, cleaning your work area and surrounding locations, and utilizing the required tools for the job are all examples of being safety-conscious.

Being present, on-time and well-rested before starting your shift

Working as a diesel mechanic entails working in a fast-paced workplace that is full of surprises. Being aware reduces the risk of accidents and improves the quality of work. Furthermore, being on time and present for your shift assists the shop and your team in completing both scheduled and unscheduled work. Our job is to keep the fleet moving, which is tough when mechanics are weary and late for work.

Listening and being a team player

Being a good listener may not be high on many diesel mechanics’ priority list, but it is a skill that comes in handy in a variety of situations. First and foremost, it is critical to comprehend what a driver is telling you, the technician, about his truck, especially when he needs the service completed. Schneider’s diesel mechanics operate as a team all of the time, and being able to communicate with another technician requires being a good listener. It might be discussing a truck’s diagnostics or identifying an air leak, fuel leak, water leak, or pressure within the engine, for example.

Working at Schneider requires you to be a team player. From corporate to leaders to drivers to technicians, we all operate as part of a team, and the ability to share information and listen to new employees is a critical skill to have.

What is the difference between diesel mechanic and diesel technician?

We both work as diesel mechanics and diesel technicians in the shop today, repairing machines and working with technological equipment.

Do diesel technicians make good money?

It’s impossible to account for all of the variables that influence how much you’ll earn at any given store, and different shops compensate their techs differently. Experience and the ability to do the job right go a long way. According to the Bureau of Labor Statistics, the median annual compensation for a heavy duty diesel mechanic is $47,350, with a median hourly wage of $19.93. Those figures, however, represent the center of the salary spectrum. Heavy-duty mechanics might earn anything from $72,000 to $93,000 per year.

Salary may appear to be the better deal when compared to an hourly rate, but it all relies on how busy the shop is. In some cases, salaried mechanics are exempt from overtime pay. As a result, salaried technicians working in a high-volume facility may wind up earning significantly less than those earning an hourly salary and working standard hours. Some shops, on the other hand, may base your pay on how many hours you actually spend working on vehicles during any particular pay period.

On the other hand, an increasing number of stores are embracing incentive-based pay structures. They give technicians an hourly wage plus bonuses if they work efficiently. Hourly-plus-bonuses can be lucrative if you can multitask, such as changing oil on one vehicle while fixing the brakes on another.

Is becoming a diesel mechanic hard?

It is also feasible to study to become a diesel mechanic without obtaining a formal education by gaining experience on the job. However, it is frequently difficult for these mechanics to make more money and advance in their careers. Finding work outside of the firm that provided the training can also be difficult.

Is diesel mechanic in high demand?

Diesel mechanics and technicians are in high demand across America, according to the Bureau of Labor Statistics (BLS), with around 242,200 technicians employed in the mechanic business.

According to a 2010 estimate, demand for mechanics is predicted to increase by 15% between 2010 and 2020, resulting in 35,200 additional work possibilities for diesel technicians.

According to a recent BLS survey, the top five states recruiting diesel technicians are:

Diesel mechanic demand varies by state and industry, necessitating the correct level of educational preparation and hands-on experience for prospective mechanics to attain the desired employment. According to the Bureau of Labor Statistics, the top five industries with the largest need for diesel mechanics are:

How much do diesel techs make?

In the United States, a diesel technician earns an average of $25.21 per hour and $7,500 in overtime per year. On February 7, 2022, 6.6k salaries were recorded.