Summary Report for:
51-2031.00 - Engine and Other Machine Assemblers
Construct, assemble, or rebuild machines, such as engines, turbines, and similar equipment used in such industries as construction, extraction, textiles, and paper manufacturing.
Sample of reported job titles: Assembler, Assembly Line Worker, Cell Technician, Engine Assembler, Engine Builder, Field Service Technician, Fitter, Large Engine Assembler, Machine Assembler, Mechanical Assembler
Tasks | Technology Skills | Tools Used | Knowledge | Skills | Abilities | Work Activities | Detailed Work Activities | Work Context | Job Zone | Education | Credentials | Interests | Work Styles | Work Values | Related Occupations | Wages & Employment | Job Openings | Additional Information
- Read and interpret assembly blueprints or specifications manuals, and plan assembly or building operations.
- Inspect, operate, and test completed products to verify functioning, machine capabilities, or conformance to customer specifications.
- Position or align components for assembly, manually or using hoists.
- Set and verify parts clearances.
- Verify conformance of parts to stock lists or blueprints, using measuring instruments such as calipers, gauges, or micrometers.
- Fasten or install piping, fixtures, or wiring and electrical components to form assemblies or subassemblies, using hand tools, rivet guns, or welding equipment.
- Remove rough spots and smooth surfaces to fit, trim, or clean parts, using hand tools or power tools.
- Lay out and drill, ream, tap, or cut parts for assembly.
- Rework, repair, or replace damaged parts or assemblies.
- Assemble systems of gears by aligning and meshing gears in gearboxes.
- Set up and operate metalworking machines, such as milling or grinding machines, to shape or fabricate parts.
- Maintain and lubricate parts or components.
- Computer aided design CAD software — Computer aided design and drafting CADD software; Dassault Systemes SOLIDWORKS
- Data base user interface and query software — Data entry software
- Office suite software — Microsoft Office
- Spreadsheet software — Microsoft Excel
- Word processing software — Microsoft Word
Hot Technology — a technology requirement frequently included in employer job postings.
- Adjustable wrenches — Backup wrenches
- Calipers — Dial calipers; Vernier calipers
- Claw hammer — Claw hammers
- Cold chisels — Metal chisels
- Dial indicator or dial gauge — Dial indicators
- Engine or vehicle stands — Engine repair stands
- Feeler gauges
- Force or torque sensors — Torque angle meters
- Grinding wheels — Ring filing wheels
- Hand reamer — Reamers
- Heat guns
- Hex keys — Allen wrenches
- Hoists — Power hoists
- Hydraulic cylinder or component repair kits — Ring squeezers
- Hydraulic press frames — Hydraulic presses
- Impact wrenches — Power wrenches
- Jib crane — Jib cranes
- Mallets — Plastic mallets
- Metal band sawing machine — Band saws
- Milling machines
- Needlenose pliers
- Nut drivers
- Personal computers
- Pipe or tube cutter — Tube cutters
- Power drills — Hand drills
- Power flaring tool — Flaring tools
- Power grinders — Grinding machines
- Power riveter — Rivet guns
- Precision file — Precision files
- Pry bars
- Pullers — Gear pullers
- Retaining ring pliers — Snap ring pliers
- Rubber mallet — Nylon hammers; Rubber mallets
- Screwdrivers — Flat head screwdrivers
- Sockets — Socket wrenches
- Soldering iron — Soldering guns
- Specialty wrenches — Gear wrenches
- Speed sensors — Timing lights
- Spot welding machine — Portable welding equipment
- Taps — Metal cutting taps
- Torque wrenches
- Tube bending machine — Tube benders
- Tumblers or polishers — Lapping tools
- Mechanical — Knowledge of machines and tools, including their designs, uses, repair, and maintenance.
- Production and Processing — Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
- Customer and Personal Service — Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction.
- Engineering and Technology — Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.
- Operation Monitoring — Watching gauges, dials, or other indicators to make sure a machine is working properly.
- Quality Control Analysis — Conducting tests and inspections of products, services, or processes to evaluate quality or performance.
- Reading Comprehension — Understanding written sentences and paragraphs in work related documents.
- 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.
- Critical Thinking — Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.
- Monitoring — Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.
- Speaking — Talking to others to convey information effectively.
- 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.
- 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.
- 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.
- Near Vision — The ability to see details at close range (within a few feet of the observer).
- Visualization — The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged.
- Control Precision — The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.
- 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).
- 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 there is a problem.
- Static Strength — The ability to exert maximum muscle force to lift, push, pull, or carry objects.
- Category Flexibility — The ability to generate or use different sets of rules for combining or grouping things in different ways.
- Deductive Reasoning — The ability to apply general rules to specific problems to produce answers that make sense.
- 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.
- 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.
- Selective Attention — The ability to concentrate on a task over a period of time without being distracted.
- Speech Clarity — The ability to speak clearly so others can understand you.
- Speech Recognition — The ability to identify and understand the speech of another person.
- 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.
- Written Comprehension — The ability to read and understand information and ideas presented in writing.
- Controlling Machines and Processes — Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
- Handling and Moving Objects — Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things.
- Inspecting Equipment, Structures, or Material — Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects.
- 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 of materials.
- Getting Information — Observing, receiving, and otherwise obtaining information from all relevant sources.
- Communicating with Supervisors, Peers, or Subordinates — Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person.
- 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.
- Identifying Objects, Actions, and Events — Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.
- Making Decisions and Solving Problems — Analyzing information and evaluating results to choose the best solution and solve problems.
- Establishing and Maintaining Interpersonal Relationships — Developing constructive and cooperative working relationships with others, and maintaining them over time.
- Monitor Processes, Materials, or Surroundings — Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
- Updating and Using Relevant Knowledge — Keeping up-to-date technically and applying new knowledge to your job.
- 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.
- Operating Vehicles, Mechanized Devices, or Equipment — Running, maneuvering, navigating, or driving vehicles or mechanized equipment, such as forklifts, passenger vehicles, aircraft, or water craft.
- Processing Information — Compiling, coding, categorizing, calculating, tabulating, auditing, or verifying information or data.
- Judging the Qualities of Things, Services, or People — Assessing the value, importance, or quality of things or people.
- Thinking Creatively — Developing, designing, or creating new applications, ideas, relationships, systems, or products, including artistic contributions.
Detailed Work Activities
- Plan production or operational procedures or sequences.
- Review blueprints or other instructions to determine operational methods or sequences.
- Inspect installed components or assemblies.
- Align parts or workpieces to ensure proper assembly.
- Measure dimensions of completed products or workpieces to verify conformance to specifications.
- Set equipment guides, stops, spacers, or other fixtures.
- Assemble electromechanical or hydraulic systems.
- Smooth metal surfaces or edges.
- Cut industrial materials in preparation for fabrication or processing.
- Drill holes in parts, equipment, or materials.
- Lay out parts to prepare for assembly.
- Repair parts or assemblies.
- Replace worn equipment components.
- Apply lubricants or coolants to workpieces.
- Operate grinding equipment.
- Operate metal or plastic forming equipment.
- Wear Common Protective or Safety Equipment such as Safety Shoes, Glasses, Gloves, Hearing Protection, Hard Hats, or Life Jackets — 91% responded “Every day.”
- Face-to-Face Discussions — 83% responded “Every day.”
- Spend Time Using Your Hands to Handle, Control, or Feel Objects, Tools, or Controls — 81% responded “Continually or almost continually.”
- Importance of Being Exact or Accurate — 54% responded “Extremely important.”
- Sounds, Noise Levels Are Distracting or Uncomfortable — 69% responded “Every day.”
- Time Pressure — 56% responded “Every day.”
- Spend Time Standing — 48% responded “More than half the time.”
- Work With Work Group or Team — 46% responded “Extremely important.”
- Contact With Others — 54% responded “Constant contact with others.”
- Exposed to Contaminants — 52% responded “Every day.”
- Responsible for Others' Health and Safety — 37% responded “Very high responsibility.”
- Exposed to Hazardous Equipment — 59% responded “Every day.”
- Frequency of Decision Making — 59% responded “Every day.”
- Duration of Typical Work Week — 60% responded “40 hours.”
- Physical Proximity — 44% responded “Slightly close (e.g., shared office).”
- Spend Time Bending or Twisting the Body — 38% responded “Continually or almost continually.”
- Indoors, Not Environmentally Controlled — 63% responded “Every day.”
- Spend Time Making Repetitive Motions — 48% responded “Continually or almost continually.”
- Freedom to Make Decisions — 43% responded “Some freedom.”
- Structured versus Unstructured Work — 37% responded “Some freedom.”
- Impact of Decisions on Co-workers or Company Results — 30% responded “Important results.”
- Consequence of Error — 32% responded “Very serious.”
- Exposed to Minor Burns, Cuts, Bites, or Stings — 40% responded “Every day.”
- Exposed to Hazardous Conditions — 29% responded “Every day.”
- Coordinate or Lead Others — 34% responded “Important.”
- Importance of Repeating Same Tasks — 32% responded “Important.”
- Indoors, Environmentally Controlled — 46% responded “Every day.”
|Title||Job Zone Two: Some Preparation Needed|
|Education||These occupations usually require a high school diploma.|
|Related Experience||Some previous work-related skill, knowledge, or experience is usually needed. For example, a teller would benefit from experience working directly with the public.|
|Job Training||Employees in these occupations need anywhere from a few months to one year of working with experienced employees. A recognized apprenticeship program may be associated with these occupations.|
|Job Zone Examples||These occupations often involve using your knowledge and skills to help others. Examples include orderlies, counter and rental clerks, customer service representatives, security guards, upholsterers, and tellers.|
|SVP Range||(4.0 to < 6.0)|
Interest code: RC Want to discover your interests? Take the O*NET Interest Profiler at My Next Move.
- Realistic — Realistic occupations frequently involve work activities that include practical, hands-on problems and solutions. They often deal with plants, animals, and real-world materials like wood, tools, and machinery. Many of the occupations require working outside, and do not involve a lot of paperwork or working closely with others.
- Conventional — Conventional occupations frequently involve following set procedures and routines. These occupations can include working with data and details more than with ideas. Usually there is a clear line of authority to follow.
- Attention to Detail — Job requires being careful about detail and thorough in completing work tasks.
- Cooperation — Job requires being pleasant with others on the job and displaying a good-natured, cooperative attitude.
- Integrity — Job requires being honest and ethical.
- Dependability — Job requires being reliable, responsible, and dependable, and fulfilling obligations.
- 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.
- Initiative — Job requires a willingness to take on responsibilities and challenges.
- Innovation — Job requires creativity and alternative thinking to develop new ideas for and answers to work-related problems.
- Analytical Thinking — Job requires analyzing information and using logic to address work-related issues and problems.
- Concern for Others — Job requires being sensitive to others' needs and feelings and being understanding and helpful on the job.
- Persistence — Job requires persistence in the face of obstacles.
- 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.
- Stress Tolerance — Job requires accepting criticism and dealing calmly and effectively with high stress situations.
- Social Orientation — Job requires preferring to work with others rather than alone, and being personally connected with others on the job.
- Achievement/Effort — Job requires establishing and maintaining personally challenging achievement goals and exerting effort toward mastering tasks.
- Leadership — Job requires a willingness to lead, take charge, and offer opinions and direction.
- 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.
- Independence — Occupations that satisfy this work value allow employees to work on their own and make decisions. Corresponding needs are Creativity, Responsibility and Autonomy.
Wages & Employment Trends
|Median wages (2019)||$21.95 hourly, $45,660 annual|
|Employment (2019)||45,900 employees|
|Projected growth (2019-2029)||Decline (-1% or lower)|
|Projected job openings (2019-2029)||3,200|
|Top industries (2019)|
Source: Bureau of Labor Statistics 2019 wage data and 2019-2029 employment projections . "Projected growth" represents the estimated change in total employment over the projections period (2019-2029). "Projected job openings" represent openings due to growth and replacement.
Job Openings on the Web
Sources of Additional Information
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.
- Communications Workers of America
- Electrical Apparatus Service Association
- International Union, United Automobile, Aerospace and Agricultural Implement Workers of America
- National Institute for Automotive Service Excellence
- Occupational Outlook Handbook: Assemblers and fabricators
- Production Engine Remanufacturers Association
- United Steelworkers