Installation & Repair49-3031.00Specialization

Bus and Truck Mechanics and Diesel Engine Specialists

Diagnose, adjust, repair, or overhaul buses and trucks, or maintain and repair any type of diesel engines. Includes mechanics working primarily with automobile or marine diesel engines.

$58,970
Median Pay
6 months to 2 years
Training
🟑
AI-Augmented

This is a specialization of

Vehicle & Mobile Equipment Mechanics

Career Overview Video

AI Impact Assessment

AI Resilience Score

Score 4/6: low AI task exposure means AI will assist but humans remain essential

🟑AI-Augmented

How we calculated this:

AI Exposure
Low+2

0% of tasks can be accelerated by AI

Job Growth
Stable+1

+2% projected (2024-2034)

Human Advantage
Moderate+1

EPOCH score: 17/25

Total Score4/6
Methodology: v2.0 - GPTs are GPTs / BLS / EPOCH Additive ScoringUpdated: 2026-01-09

Key Responsibilities

  • Use handtools, such as screwdrivers, pliers, wrenches, pressure gauges, or precision instruments, as well as power tools, such as pneumatic wrenches, lathes, welding equipment, or jacks and hoists.
  • Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they are in proper operating condition.
  • Raise trucks, buses, and heavy parts or equipment using hydraulic jacks or hoists.
  • Adjust and reline brakes, align wheels, tighten bolts and screws, and reassemble equipment.
  • Attach test instruments to equipment, and read dials and gauges to diagnose malfunctions.
  • Perform routine maintenance such as changing oil, checking batteries, and lubricating equipment and machinery.
  • Examine and adjust protective guards, loose bolts, and specified safety devices.
  • Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers, motor analyzers, chassis charts, or pressure gauges.
  • Rewire ignition systems, lights, and instrument panels.
  • Test drive trucks and buses to diagnose malfunctions or to ensure that they are working properly.

Education & Training

Typical Entry Education

Post-secondary certificate

Time to Job Ready

1-3 years

Based on Job Zone 3. For formal education duration only, see education_duration.

Technology Skills

Autodesk AutoCADComputer aided design CAD softwareComputer aided manufacturing CAM softwareComputerized maintenance management system software CMMSCummins INSITEDassault Systemes CATIADassault Systemes SolidWorksDatabase softwareEngine diagnostic softwareFleet management softwareInventory tracking softwareMicrosoft ExcelMicrosoft Office softwareMicrosoft WordSAP software

Key Abilities

Near VisionArm-Hand SteadinessManual DexterityFinger DexterityControl PrecisionHearing SensitivityProblem SensitivityDeductive ReasoningMultilimb CoordinationExtent Flexibility

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Compensation Details

$39,020
10th Percentile
$58,970
Median
$82,430
90th Percentile

Based on 285,030 employed workers

Also Known As

Biodiesel Engine SpecialistBoat Diesel Motor MechanicBoat Engine InstallerBoat Engine MechanicBoat MechanicBus Engine MechanicBus Garage MechanicBus MechanicBus Motor MechanicBus Overhauler

Data from O*NET 30.1 and BLS Occupational Employment Statistics

O*NET Code: 49-3031.00