Diesel Mechanic
Diagnose and repair trucks, buses and diesel-powered equipment.
- $61,770
- 6–24 months
Mechanics, Maintenance & Manufacturing career
Also called: Heavy Equipment Technician · Field Service Technician · Construction Equipment Mechanic · Heavy Duty Mechanic
What heavy equipment mechanics do, what they earn, how long training takes and how to get started, with official BLS pay data and practical, job-level detail.
Mobile heavy equipment mechanics inspect, repair and maintain construction, mining, forestry and other heavy equipment, including hydraulics, drivetrains, electrical systems and undercarriages. The median pay is $65,510 per year (BLS, May 2025), most people train for about 1–2 years, and employment is projected to grow +6.7% from 2025–35.
Pay data: BLS OEWS, May 2025 · Outlook: BLS 2025–35 · Checked October 15, 2026
Heavy equipment mechanics service the machines that build roads, move earth and mine materials: excavators, dozers, loaders, graders, cranes and haul trucks. They troubleshoot hydraulic, electrical and drivetrain systems, rebuild components, replace undercarriage parts and perform preventive maintenance. Field technicians drive service trucks to job sites to repair machines where they work.
Many mechanics train in diesel or heavy equipment programs and dealer technician programs, while others learn on the job over several years. Equipment is increasingly computerized, so diagnostic software skills matter. Demand is strong, and experienced field techs are highly valued.
Mechanics work in dealership and fleet shops and outdoors at construction, mining and forestry sites in all weather. The work is physical, dirty and involves heavy components and high-pressure hydraulics.
Schedule: Most work full-time, often with overtime. Field technicians may work long days, travel to remote sites or work rotating schedules.
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Half of heavy equipment mechanics earned more than $65,510 and half earned less in May 2025. Pay ranged from about $46,820 for the lowest 10% to $94,460 for the top 10%.
Full heavy equipment mechanic pay scale and hourly rates →
A high school diploma is typical. Many mechanics complete a one- to two-year diesel or heavy equipment technology program or a dealer program, such as Caterpillar ThinkBIG or John Deere TECH. Others learn through years of on-the-job training.
Step-by-step guide to becoming a heavy equipment mechanic →
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Our Heavy Equipment Mechanic training (10 hours, $89.99) covers the role, 15+ key terms, step-by-step procedures such as troubleshoot a slow hydraulic function and perform a preventive maintenance service, safety and how to land your first job.
Diagnose and repair trucks, buses and diesel-powered equipment.
Operate excavators, dozers, loaders and graders to move earth and build infrastructure.
Repair and maintain tractors, combines and precision farm equipment.
Keep factory machinery running with mechanical, electrical and PLC troubleshooting.
Compare: Heavy Equipment Mechanic vs. Diesel Mechanic · Heavy Equipment Mechanic vs. Heavy Equipment Operator · Heavy Equipment Mechanic vs. Farm Equipment Mechanic · Heavy Equipment Mechanic vs. Maintenance Technician
They overlap. Heavy equipment mechanics also work heavily with hydraulics and undercarriages.
Programs take about one to two years, and skills grow with experience.
Yes. Many drive service trucks to job sites, sometimes far from home.
The median annual wage for heavy equipment mechanics was $65,510 ($31.50 per hour) in May 2025, according to the U.S. Bureau of Labor Statistics. The lowest 10% earned less than $46,820 and the highest 10% earned more than $94,460.
Most people need about 1–2 years of training. A high school diploma is typical. Many mechanics complete a one- to two-year diesel or heavy equipment technology program or a dealer program, such as Caterpillar ThinkBIG or John Deere TECH. Others learn through years of on-the-job training.
No four-year degree is typically required. BLS lists “high school diploma or equivalent” as the typical entry-level education, plus long-term on-the-job training.
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Reviewed by the Career Education Institute Curriculum Team. Pay figures are national estimates; local pay varies. See our editorial policy.