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Become A Truck Trailer Mechanic

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Working As A Truck Trailer Mechanic

  • Repairing and Maintaining Mechanical Equipment
  • Getting Information
  • Operating Vehicles, Mechanized Devices, or Equipment
  • Inspecting Equipment, Structures, or Material
  • Evaluating Information to Determine Compliance with Standards
  • Outdoors/walking/standing

  • $45,000

    Average Salary

What Does A Truck Trailer Mechanic Do

Diesel service technicians and mechanics inspect, repair, or overhaul buses and trucks, or maintain and repair any type of diesel engine.

Duties

Diesel service technicians and mechanics typically do the following:

  • Consult with customers and read work orders to determine work required
  • Plan work procedures, using technical charts and manuals
  • Inspect brake systems, steering mechanisms, transmissions, engines, and other parts of vehicles
  • Follow checklists to ensure that all critical parts are examined
  • Read and interpret diagnostic test results to identify mechanical problems
  • Repair or replace malfunctioning components, parts, and other mechanical or electrical equipment
  • Perform basic care and maintenance, including changing oil, checking fluid levels, and rotating tires
  • Test-drive vehicles to ensure that they run smoothly

Because of their efficiency and durability, diesel engines have become the standard in powering trucks and buses. Other heavy vehicles and mobile equipment, including bulldozers and cranes, are also powered by diesel engines, as are many commercial boats, and some passenger vehicles and pickups.

Diesel technicians handle many kinds of repairs. They may work on a vehicle’s electrical system, make major engine repairs, or retrofit exhaust systems with emission control systems to comply with pollution regulations.

Diesel engine maintenance and repair is becoming more complex as engines and other components use more electronic systems to control their operation. For example, fuel injection and engine timing systems rely heavily on microprocessors to maximize fuel efficiency and minimize harmful emissions. In most shops, workers often use hand-held or laptop computers to diagnose problems and adjust engine functions. 

In addition to using computerized diagnostic equipment, diesel technicians use a variety of power and machine tools, such as pneumatic wrenches, lathes, grinding machines, and welding equipment. Hand tools, including pliers, sockets and ratchets, and screwdrivers, are commonly used.

Employers typically provide expensive power tools and computerized equipment, but workers generally acquire their own hand tools over time.

For more information on technicians and mechanics who work primarily on automobiles, see the profile on automotive service technicians and mechanics.

For more information on technicians and mechanics who work primarily on farm equipment, construction vehicles, and rail cars, see the profile on heavy vehicle and mobile equipment service technicians.

For more information on technicians and mechanics who work primarily on motorboats, motorcycles, and small all-terrain vehicles, see the profile on small engine mechanics.

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How To Become A Truck Trailer Mechanic

Most diesel technicians learn informally on the job after a high school education, but employers increasingly prefer applicants who have completed postsecondary training programs in diesel engine repair. Although not required, industry certification can demonstrate a diesel technician’s competence and experience.

Education

Most employers require a high school diploma or equivalent. High school or postsecondary courses in automotive repair, electronics, and mathematics provide a strong educational background for a career as a diesel technician.

An increasing number of employers look for workers with postsecondary training in diesel engine repair. Many community colleges and trade and vocational schools offer certificate or degree programs in diesel engine repair.

Programs mix classroom instruction with hands-on training, including the basics of diesel technology, repair techniques and equipment, and practical exercises. Students also learn how to interpret technical manuals and electronic diagnostic reports.

Training

Diesel technicians who begin working without any postsecondary education are trained extensively on the job. Trainees are assigned basic tasks, such as cleaning parts, checking fuel and oil levels, and driving vehicles in and out of the shop.

After they learn routine maintenance and repair tasks and demonstrate competence, trainees move on to more complicated subjects such as vehicle diagnostics. This process can take from 3 to 4 years, at which point a trainee is usually considered a journey-level diesel technician.

Over the course of their careers, diesel technicians must learn to use new techniques and equipment. Employers often send experienced technicians to special training classes conducted by manufacturers and vendors to learn about the latest diesel technology.

Licenses, Certifications, and Registrations

Certification from the National Institute for Automotive Service Excellence (ASE) is the standard credential for diesel and other automotive service technicians and mechanics. Although not required, this certification demonstrates a diesel technician’s competence and experience to potential employers and clients, and often brings higher pay.

Diesel technicians may be certified in specific repair areas, such as drive trains, electronic systems, or preventative maintenance and inspection. To earn certification, technicians must have 2 years of work experience and pass one or more ASE exams. To remain certified, diesel technicians must pass a recertification exam every 5 years.

Many diesel technicians are required to have a commercial driver’s license so they may test-drive buses and large trucks.

Important Qualities

Customer-service skills. Diesel technicians frequently discuss automotive problems and necessary repairs with their customers. They must be courteous, good listeners, and ready to answer customers’ questions.

Detail oriented. Diesel technicians must be aware of small details when inspecting or repairing engines and components, because mechanical and electronic malfunctions are often due to misalignments and other easy-to-miss causes.

Dexterity. Mechanics need a steady hand and good hand-eye coordination for many tasks, such as disassembling engine parts, connecting or attaching components, or using hand tools.

Mechanical skills. Diesel technicians must be familiar with engine components and systems and know how they interact with each other. They often disassemble major parts for repairs, and they must be able to put them back together properly.

Organizational skills. Diesel technicians must keep workspaces clean and organized in order to maintain safety and ensure accountability for parts.

Strength. Diesel technicians often lift heavy parts and tools, such as exhaust system components and pneumatic wrenches.

Troubleshooting skills. Diesel technicians must be able to use diagnostic equipment on engine systems and components in order to identify and fix problems in increasingly complicated mechanical and electronic systems. They must be familiar with electronic control systems and the appropriate tools needed to fix and maintain them.

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Truck Trailer Mechanic Career Paths

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Help others decide if this is a good career for them

Average Length of Employment
Fleet Mechanic 3.9 years
Mechanic Driver 3.9 years
Bus Mechanic 3.9 years
Diesel Mechanic 3.7 years
Mechanic 3.6 years
Truck Technician 3.5 years
Truck Mechanic 3.5 years
Service Mechanic 3.4 years
Shop Mechanic 3.1 years
Diesel Technician 3.0 years
Trailer Mechanic 2.9 years
Tractor Mechanic 2.7 years
Mechanic Helper 2.2 years
Top Careers Before Truck Trailer Mechanic
Mechanic 14.4%
Welder 5.8%
Technician 4.1%
Owner 2.9%
Foreman 2.1%
Top Careers After Truck Trailer Mechanic
Mechanic 12.4%
Technician 6.1%
Driver 3.3%
Welder 3.2%

Do you work as a Truck Trailer Mechanic?

Average Yearly Salary
$45,000
View Detailed Salary Report
$31,000
Min 10%
$45,000
Median 50%
$45,000
Median 50%
$45,000
Median 50%
$45,000
Median 50%
$45,000
Median 50%
$45,000
Median 50%
$45,000
Median 50%
$64,000
Max 90%
Best Paying Company
Epes Transport System
Highest Paying City
Fairbanks, AK
Highest Paying State
Alaska
Avg Experience Level
3.5 years
How much does a Truck Trailer Mechanic make at top companies?
The national average salary for a Truck Trailer Mechanic in the United States is $45,436 per year or $22 per hour. Those in the bottom 10 percent make under $31,000 a year, and the top 10 percent make over $65,000.

How Would You Rate The Salary Of a Truck Trailer Mechanic?

Have you worked as a Truck Trailer Mechanic? Help other job seekers by rating your experience as a Truck Trailer Mechanic.

Top Skills for A Truck Trailer Mechanic

  1. Trailer Repair
  2. Engine Repair
  3. Wheel Bearings
You can check out examples of real life uses of top skills on resumes here:
  • Assisted in truck/ trailer repair and maintenance also worked in the tire shop and helped with building maintenance
  • Major engine repairs to Class 8 Trucks
  • Perform basic computer repairs, Rebuild engines and trouble shoot repairs on gas and diesel engines.
  • Performed preventative maintenance, repairs and installation of concrete plant equipment.
  • Load and unload dump trucks and tractor trailers.- Order and receive materials.

Truck Trailer Mechanic Demographics

Gender

Male

85.9%

Unknown

11.3%

Female

2.8%
Ethnicity

White

68.0%

Hispanic or Latino

13.8%

Black or African American

9.9%

Asian

5.0%

Unknown

3.3%
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Foreign Languages Spoken

Carrier

57.1%

Spanish

42.9%

Truck Trailer Mechanic Education

Schools

Universal Technical Institute

21.1%

Nashville Auto Diesel College Inc

8.8%

Dakota County Technical College

7.0%

Lincoln College of Technology - Indianapolis

5.3%

WyoTech - Laramie

5.3%

Michigan Technological University

3.5%

Spokane Community College

3.5%

Central Texas College

3.5%

Rosedale Technical Institute

3.5%

Arkansas State University

3.5%

Owens Community College

3.5%

University of Evansville

3.5%

University of Akron

3.5%

A-Technical College

3.5%

Jackson Community College

3.5%

Shasta College

3.5%

Arizona Automotive Institute

3.5%

Lincoln College of Technology - Grand Prairie

3.5%

Houston Community College

3.5%

University of Phoenix

3.5%
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Majors

Automotive Technology

45.1%

Business

12.7%

Industrial Technology

4.4%

General Studies

4.4%

Precision Metal Working

3.9%

Heavy/Industrial Equipment Maintenance Technologies

3.9%

Heating And Air Conditioning

3.9%

Mechanical Engineering

2.9%

Mechanical Engineering Technology

2.0%

Accounting

2.0%

Education

2.0%

Criminal Justice

2.0%

Management

1.5%

Electrical Engineering Technology

1.5%

Computer Networking

1.5%

Agricultural Mechanization

1.5%

Engineering

1.5%

Electrical Engineering

1.5%

General Education, Specific Areas

1.0%

Computer Information Systems

1.0%
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Degrees

Other

49.0%

Associate

17.1%

Certificate

12.2%

Diploma

10.3%

Bachelors

9.5%

License

1.1%

Masters

0.8%
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