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Engine/Machine Assembler  What They Do

Just the Facts


Constructs, assembles, or rebuilds machines, such as engines, turbines, and similar equipment used in such industries as construction, extraction, textiles, and paper manufacturing.

This career is part of the Manufacturing cluster Maintenance, Installation and Repair pathway, Manufacturing Production pathway.


A person in this career:

  • Reads and interprets assembly blueprints or specifications manuals and plans assembly or building operations.
  • Inspects, operates, and tests completed products to verify functioning, machine capabilities, or conformance to customer specifications.
  • Positions or aligns components for assembly, manually or using hoists.
  • Sets and verifies parts clearances.
  • Verifies conformance of parts to stock lists or blueprints, using measuring instruments, such as calipers, gauges, or micrometers.
  • Fastens or installs piping, fixtures, or wiring and electrical components to form assemblies or subassemblies, using hand tools, rivet guns, or welding equipment.
  • Removes rough spots and smoothes surfaces to fit, trim, or clean parts, using hand tools or power tools.
  • Lays out and drills, reams, taps, or cuts parts for assembly.
  • Reworks, repairs, or replaces damaged parts or assemblies.
  • Assembles systems of gears by aligning and meshing gears in gearboxes.

Working Conditions and Physical Demands

People who do this job report that:

  • You would often handle loads up to 20 lbs., sometimes up to 50 lbs. You might do a lot of lifting, carrying, pushing or pulling.
  • Work in this occupation involves bending or twisting your body more than one-third of the time
  • Work in this occupation involves use of protective items such as safety shoes, glasses, gloves, hearing protection, a hard hat, or personal flotation devices
  • Exposure to pollutants, gases, dust, fumes, odors, poor ventilation, etc.
  • Work in this occupation involves using your hands to hold, control, and feel objects more than one-third of the time
  • Exposed to conditions such as high voltage electricity, combustibles, explosives, and chemicals more than once a month
  • Exposed to hazardous equipment such as saws, machinery, or vehicular traffic more than once a month
  • Sound and noise levels are loud and distracting
  • Work in this occupation involves making repetitive motions more than one-third of the time
  • Work in this occupation involves standing more than one-third of the time

Working in this career involves (physical activities):

  • Bending, stretching, twisting, or reaching
  • Seeing clearly up close
  • Speaking clearly enough to be able to be understood by others
  • Identifying and understanding the speech of another person
  • Lifting, pushing, pulling, or carrying objects
  • Using abdominal and lower back muscles repeatedly or over time without tiring

Work Hours and Travel

  • Overtime work
  • Rotating shift work

Specialty and Similar Careers

Careers that are more detailed or close to this career:

  • Fuel Injection Technician -- Rebuilds, tests, and calibrates fuel injection units as used on diesel engines, railroad locomotives, trucks, construction equipment, tractors, and power plants.
  • Turbine Blade Assembler -- Fabricates blade structure of steam and gas turbines according to specifications and drawings, using machine tools, handtools, and measuring devices.
  • Turbine Subassembler -- Assembles steam and gas turbine subassemblies according to drawings, using measuring instruments, handtools, and power tools.
  • Aircraft Engine Assembler --
  • Automotive Production Worker --
  • Clutch Housing Assembler --
  • Crane Assembler --
  • Jet Engine Assembler --
  • Paper Making Machinery Assembler --
  • Truck Transmission Assembler --
  • Turbine Engine Assembler --