Bus and Truck Mechanics and Diesel Engine Specialists
49-3031.00

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.

Sample of reported job titles: Bus Mechanic, Diesel Mechanic, Diesel Technician (Diesel Tech), Fleet Mechanic, General Repair Mechanic, Heavy Truck Mechanic, Service Technician, Trailer Mechanic, Transit Mechanic, Truck Mechanic

Occupation-Specific Information

Tasks

  • 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.
  • Diagnose and repair vehicle heating and cooling systems.
  • Inspect, repair, and maintain automotive and mechanical equipment and machinery, such as pumps and compressors.
  • Inspect and verify dimensions and clearances of parts to ensure conformance to factory specifications.
  • Disassemble and overhaul internal combustion engines, pumps, generators, transmissions, clutches, and differential units.
  • Adjust or repair computer controlled exhaust emissions devices.
  • Rebuild gas or diesel engines.
  • Specialize in repairing and maintaining parts of the engine, such as fuel injection systems.
  • Recondition and replace parts, pistons, bearings, gears, and valves.
  • Install or repair accessories.
  • Repair or adjust seats, doors, or windows.
  • Dismount, mount, and repair or replace tires.
  • Align front ends and suspension systems.
  • Maintain or repair vehicles with alternative fuel systems, including biodiesel, hybrid, or compressed natural gas vehicles.
  • Measure vehicle emissions to determine whether they are within acceptable limits.
  • Follow green operational practices involving conservation of water or energy or reduction of solid waste.
  • Operate valve-grinding machines to grind and reset valves.

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Technology Skills

Hot technology
Hot Technologies are requirements most frequently included across all employer job postings.

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Occupational Requirements

Work Activities

  • Repairing and Maintaining Mechanical Equipment — Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles.
  • Inspecting Equipment, Structures, or Materials — Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects.
  • Getting Information — Observing, receiving, and otherwise obtaining information from all relevant sources.
  • Identifying Objects, Actions, and Events — Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.
  • Operating Vehicles, Mechanized Devices, or Equipment — Running, maneuvering, navigating, or driving vehicles or mechanized equipment, such as forklifts, passenger vehicles, aircraft, or watercraft.
  • Making Decisions and Solving Problems — Analyzing information and evaluating results to choose the best solution and solve problems.
  • Repairing and Maintaining Electronic Equipment — Servicing, repairing, calibrating, regulating, fine-tuning, or testing machines, devices, and equipment that operate primarily on the basis of electrical or electronic (not mechanical) principles.
  • Controlling Machines and Processes — Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
  • Performing General Physical Activities — Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling materials.
  • Updating and Using Relevant Knowledge — Keeping up-to-date technically and applying new knowledge to your job.
  • Handling and Moving Objects — Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things.
  • Monitoring Processes, Materials, or Surroundings — Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
  • Analyzing Data or Information — Identifying the underlying principles, reasons, or facts of information by breaking down information or data into separate parts.
  • Communicating with Supervisors, Peers, or Subordinates — Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person.
  • Documenting/Recording Information — Entering, transcribing, recording, storing, or maintaining information in written or electronic/magnetic form.
  • Working with Computers — Using computers and computer systems (including hardware and software) to program, write software, set up functions, enter data, or process information.
  • Evaluating Information to Determine Compliance with Standards — Using relevant information and individual judgment to determine whether events or processes comply with laws, regulations, or standards.
  • Processing Information — Compiling, coding, categorizing, calculating, tabulating, auditing, or verifying information or data.
  • Organizing, Planning, and Prioritizing Work — Developing specific goals and plans to prioritize, organize, and accomplish your work.
  • Providing Consultation and Advice to Others — Providing guidance and expert advice to management or other groups on technical, systems-, or process-related topics.
  • Drafting, Laying Out, and Specifying Technical Devices, Parts, and Equipment — Providing documentation, detailed instructions, drawings, or specifications to tell others about how devices, parts, equipment, or structures are to be fabricated, constructed, assembled, modified, maintained, or used.
  • Estimating the Quantifiable Characteristics of Products, Events, or Information — Estimating sizes, distances, and quantities; or determining time, costs, resources, or materials needed to perform a work activity.
  • Thinking Creatively — Developing, designing, or creating new applications, ideas, relationships, systems, or products, including artistic contributions.
  • Establishing and Maintaining Interpersonal Relationships — Developing constructive and cooperative working relationships with others, and maintaining them over time.
  • Developing Objectives and Strategies — Establishing long-range objectives and specifying the strategies and actions to achieve them.

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Detailed Work Activities

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Work Context

  • Exposed to Contaminants — 85% responded “Every day.”
  • Spend Time Using Your Hands to Handle, Control, or Feel Objects, Tools, or Controls — 80% responded “Continually or almost continually.”
  • Wear Common Protective or Safety Equipment such as Safety Shoes, Glasses, Gloves, Hearing Protection, Hard Hats, or Life Jackets — 78% responded “Every day.”
  • Face-to-Face Discussions — 90% responded “Every day.”
  • In an Enclosed Vehicle or Equipment — 68% responded “Every day.”
  • Sounds, Noise Levels Are Distracting or Uncomfortable — 81% responded “Every day.”
  • Indoors, Not Environmentally Controlled — 74% responded “Every day.”
  • Responsible for Others' Health and Safety — 72% responded “Very high responsibility.”
  • Importance of Being Exact or Accurate — 53% responded “Extremely important.”
  • Spend Time Bending or Twisting the Body — 59% responded “Continually or almost continually.”
  • Spend Time Standing — 59% responded “Continually or almost continually.”
  • Cramped Work Space, Awkward Positions — 67% responded “Every day.”
  • Impact of Decisions on Co-workers or Company Results — 69% responded “Very important results.”
  • Contact With Others — 51% responded “Constant contact with others.”
  • Exposed to Hazardous Equipment — 60% responded “Every day.”
  • Outdoors, Exposed to Weather — 49% responded “Every day.”
  • Structured versus Unstructured Work — 55% responded “A lot of freedom.”
  • Frequency of Decision Making — 66% responded “Every day.”
  • Very Hot or Cold Temperatures — 52% responded “Every day.”
  • Spend Time Making Repetitive Motions — 43% responded “More than half the time.”
  • Freedom to Make Decisions — 45% responded “A lot of freedom.”
  • Time Pressure — 40% responded “Every day.”
  • Duration of Typical Work Week — 53% responded “More than 40 hours.”
  • Spend Time Kneeling, Crouching, Stooping, or Crawling — 40% responded “Continually or almost continually.”
  • Responsibility for Outcomes and Results — 44% responded “Very high responsibility.”
  • Exposed to Minor Burns, Cuts, Bites, or Stings — 49% responded “Every day.”
  • Work With Work Group or Team — 41% responded “Very important.”
  • Telephone — 57% responded “Every day.”
  • Coordinate or Lead Others — 41% responded “Extremely important.”
  • Spend Time Walking and Running — 35% responded “Continually or almost continually.”
  • Exposed to Hazardous Conditions — 48% responded “Every day.”
  • Consequence of Error — 31% responded “Extremely serious.”
  • Extremely Bright or Inadequate Lighting — 33% responded “Every day.”
  • Importance of Repeating Same Tasks — 28% responded “Extremely important.”
  • In an Open Vehicle or Equipment — 38% responded “Every day.”
  • Physical Proximity — 46% responded “Moderately close (at arm's length).”
  • Spend Time Keeping or Regaining Balance — 29% responded “About half the time.”
  • Electronic Mail — 38% responded “Never.”
  • Level of Competition — 38% responded “Moderately competitive.”

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Experience Requirements

Job Zone

Title
Job Zone Three: Medium Preparation Needed
Education
Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.
Related Experience
Previous work-related skill, knowledge, or experience is required for these occupations. For example, an electrician must have completed three or four years of apprenticeship or several years of vocational training, and often must have passed a licensing exam, in order to perform the job.
Job Training
Employees in these occupations usually need one or two years of training involving both on-the-job experience and informal training with experienced workers. A recognized apprenticeship program may be associated with these occupations.
Job Zone Examples
These occupations usually involve using communication and organizational skills to coordinate, supervise, manage, or train others to accomplish goals. Examples include hydroelectric production managers, desktop publishers, electricians, agricultural technicians, barbers, court reporters and simultaneous captioners, and medical assistants.
SVP Range
(6.0 to < 7.0)

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Training & Credentials

State training
Local training
Certifications
State licenses

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Apprenticeship Opportunities

Example apprenticeship titles for this occupation:

  • Diesel Mechanic (Alternate Title: Power-Generation Equipment Repairer)
  • Machinist, Marine Engine
  • Maint Mechanic (Const; Petrol) (Alternate Title: Heavy-Wheel Vehicle Mechanic )
  • Mechanic, Industrial Truck (Alternate Titles: Diesel Mech/Power-Gen Equip Rep)
  • Oil Field Equip Mechanic
  • Tractor Mechanic

Specific title(s) listed above are vetted by industry and approved by the U.S. Department of Labor for use in a Registered Apprenticeship Program.

Start your career and build your skillset. Visit Apprenticeship.gov external site to learn about opportunities related to this occupation.

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Worker Requirements

Skills

  • Repairing — Repairing machines or systems using the needed tools.
  • Troubleshooting — Determining causes of operating errors and deciding what to do about it.
  • Operations Monitoring — Watching gauges, dials, or other indicators to make sure a machine is working properly.
  • Equipment Maintenance — Performing routine maintenance on equipment and determining when and what kind of maintenance is needed.
  • Critical Thinking — Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions, or approaches to problems.
  • Quality Control Analysis — Conducting tests and inspections of products, services, or processes to evaluate quality or performance.
  • Equipment Selection — Determining the kind of tools and equipment needed to do a job.
  • Judgment and Decision Making — Considering the relative costs and benefits of potential actions to choose the most appropriate one.
  • Speaking — Talking to others to convey information effectively.
  • Active Listening — Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.
  • Complex Problem Solving — Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions.
  • Monitoring — Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.
  • Operation and Control — Controlling operations of equipment or systems.
  • Time Management — Managing one's own time and the time of others.

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Knowledge

  • Mechanical — Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
  • Transportation — Knowledge of principles and methods for moving people or goods by air, rail, sea, or road, including the relative costs and benefits.
  • Education and Training — Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.
  • English Language — Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar.
  • Public Safety and Security — Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.
  • Computers and Electronics — Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.
  • Mathematics — Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.
  • Administration and Management — Knowledge of business and management principles involved in strategic planning, resource allocation, human resources modeling, leadership technique, production methods, and coordination of people and resources.

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Education

How much education does a new hire need to perform a job in this occupation? Respondents said:

  • 39%
     
    responded: Post-secondary certificate required
  • 37%
     
    responded: High school diploma or equivalent requiredmore info

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Worker Characteristics

Abilities

  • Near Vision — The ability to see details at close range (within a few feet of the observer).
  • Arm-Hand Steadiness — The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position.
  • Finger Dexterity — The ability to make precisely coordinated movements of the fingers of one or both hands to grasp, manipulate, or assemble very small objects.
  • Manual Dexterity — The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.
  • Control Precision — The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.
  • Hearing Sensitivity — The ability to detect or tell the differences between sounds that vary in pitch and loudness.
  • Deductive Reasoning — The ability to apply general rules to specific problems to produce answers that make sense.
  • Multilimb Coordination — The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion.
  • Problem Sensitivity — The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing that there is a problem.
  • Extent Flexibility — The ability to bend, stretch, twist, or reach with your body, arms, and/or legs.
  • Information Ordering — The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations).
  • Trunk Strength — The ability to use your abdominal and lower back muscles to support part of the body repeatedly or continuously over time without "giving out" or fatiguing.
  • Visualization — The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged.
  • Auditory Attention — The ability to focus on a single source of sound in the presence of other distracting sounds.
  • Depth Perception — The ability to judge which of several objects is closer or farther away from you, or to judge the distance between you and an object.
  • Flexibility of Closure — The ability to identify or detect a known pattern (a figure, object, word, or sound) that is hidden in other distracting material.
  • Inductive Reasoning — The ability to combine pieces of information to form general rules or conclusions (includes finding a relationship among seemingly unrelated events).
  • Oral Comprehension — The ability to listen to and understand information and ideas presented through spoken words and sentences.
  • Oral Expression — The ability to communicate information and ideas in speaking so others will understand.
  • Far Vision — The ability to see details at a distance.
  • Perceptual Speed — The ability to quickly and accurately compare similarities and differences among sets of letters, numbers, objects, pictures, or patterns. The things to be compared may be presented at the same time or one after the other. This ability also includes comparing a presented object with a remembered object.
  • Reaction Time — The ability to quickly respond (with the hand, finger, or foot) to a signal (sound, light, picture) when it appears.
  • Selective Attention — The ability to concentrate on a task over a period of time without being distracted.
  • Speech Recognition — The ability to identify and understand the speech of another person.
  • Static Strength — The ability to exert maximum muscle force to lift, push, pull, or carry objects.
  • Visual Color Discrimination — The ability to match or detect differences between colors, including shades of color and brightness.

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Interests

Interest code: RCI
Want to discover your interests? Take the O*NET Interest Profiler at My Next Move.
  • Realistic — Work involves designing, building, or repairing of equipment, materials, or structures, engaging in physical activity, or working outdoors. Realistic occupations are often associated with engineering, mechanics and electronics, construction, woodworking, transportation, machine operation, agriculture, animal services, physical or manual labor, athletics, or protective services.
  • Conventional — Work involves following procedures and regulations to organize information or data, typically in a business setting. Conventional occupations are often associated with office work, accounting, mathematics/statistics, information technology, finance, or human resources.
  • Investigative — Work involves studying and researching non-living objects, living organisms, disease or other forms of impairment, or human behavior. Investigative occupations are often associated with physical, life, medical, or social sciences, and can be found in the fields of humanities, mathematics/statistics, information technology, or health care service.

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Work Values

  • Support — Occupations that satisfy this work value offer supportive management that stands behind employees. Corresponding needs are Company Policies, Supervision: Human Relations and Supervision: Technical.
  • Relationships — Occupations that satisfy this work value allow employees to provide service to others and work with co-workers in a friendly non-competitive environment. Corresponding needs are Co-workers, Moral Values and Social Service.
  • Achievement — Occupations that satisfy this work value are results oriented and allow employees to use their strongest abilities, giving them a feeling of accomplishment. Corresponding needs are Ability Utilization and Achievement.

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Work Styles

  • Attention to Detail — Job requires being careful about detail and thorough in completing work tasks.
  • Dependability — Job requires being reliable, responsible, and dependable, and fulfilling obligations.
  • Analytical Thinking — Job requires analyzing information and using logic to address work-related issues and problems.
  • Initiative — Job requires a willingness to take on responsibilities and challenges.
  • Integrity — Job requires being honest and ethical.
  • Self-Control — Job requires maintaining composure, keeping emotions in check, controlling anger, and avoiding aggressive behavior, even in very difficult situations.
  • Adaptability/Flexibility — Job requires being open to change (positive or negative) and to considerable variety in the workplace.
  • Concern for Others — Job requires being sensitive to others' needs and feelings and being understanding and helpful on the job.
  • Cooperation — Job requires being pleasant with others on the job and displaying a good-natured, cooperative attitude.
  • Persistence — Job requires persistence in the face of obstacles.
  • Stress Tolerance — Job requires accepting criticism and dealing calmly and effectively with high-stress situations.
  • Achievement/Effort — Job requires establishing and maintaining personally challenging achievement goals and exerting effort toward mastering tasks.
  • Independence — Job requires developing one's own ways of doing things, guiding oneself with little or no supervision, and depending on oneself to get things done.
  • Leadership — Job requires a willingness to lead, take charge, and offer opinions and direction.
  • Innovation — Job requires creativity and alternative thinking to develop new ideas for and answers to work-related problems.
  • Social Orientation — Job requires preferring to work with others rather than alone, and being personally connected with others on the job.

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Workforce Characteristics

Wages & Employment Trends

Median wages (2023)
$28.35 hourly, $58,970 annual
State wages
Local wages
Employment (2023)
300,200 employees
Projected growth (2023-2033)
Average (3% to 5%)
Projected job openings (2023-2033)
25,600
State trends
Top industries (2023)

Source: Bureau of Labor Statistics 2023 wage data external site and 2023-2033 employment projections external site. “Projected growth” represents the estimated change in total employment over the projections period (2023-2033). “Projected job openings” represent openings due to growth and replacement.

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Job Openings on the Web

State job openings
Local job openings

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More Information

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Professional Associations

Disclaimer: Sources are listed to provide additional information on related jobs, specialties, and/or industries. Links to non-DOL Internet sites are provided for your convenience and do not constitute an endorsement.

National Associations
Accreditation, Certification, & Unions

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