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Details for 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.


  • Set and verify parts clearances.
  • Verify conformance of parts to stock lists and blueprints, using measuring instruments such as calipers, gauges, and micrometers.
  • Assemble systems of gears by aligning and meshing gears in gearboxes.
  • Maintain and lubricate parts and components.
  • Set up and operate metalworking machines, such as milling and grinding machines, to shape or fabricate parts.
  • Fasten and install piping, fixtures, or wiring and electrical components to form assemblies or subassemblies, using hand tools, rivet guns, and welding equipment.
  • Inspect, operate, and test completed products to verify functioning, machine capabilities, and conformance to customer specifications.
  • Lay out and drill, ream, tap, and cut parts for assembly.
  • Position and align components for assembly, manually or using hoists.
  • Read and interpret assembly blueprints and specifications manuals, and plan assembly or building operations.
  • Remove rough spots, and smooth surfaces to fit, trim, or clean parts, using hand tools and power tools.
  • Rework, repair, and replace damaged parts or assemblies.


  • 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.

Education, Training, Experience

  • Education - These occupations usually require a high school diploma.
  • 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.
  • 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.


  • 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.
  • Production and Processing - Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.


Related Careers

  • Aircraft Structure, Surfaces, Rigging, and Systems Assemblers
  • Electric Motor, Power Tool, and Related Repairers
  • Farm Equipment Mechanics
  • Maintenance Workers, Machinery
  • Mechanical Door Repairers
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