Engine and Other Machine Assemblers
Also called: Air Conditioning Coil Assembler (AC Coil Assembler), Aircraft Engine Assembler, Aircraft Power Plant Assembler, Aircraft Powerplant Assembler, Assembler, Assembler Erector, Assembling Motor Builder, Assembly Line Worker
Construct, assemble, or rebuild machines, such as engines, turbines, and similar equipment used in such industries as construction, extraction, textiles, and paper manufacturing.
What engine and other machine assemblers do
Typical tasks
- 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.
Typical path into the job (BLS)
Engine and Other Machine Assemblers salary
The median annual wage for engine and other machine assemblers is $53,710 (BLS OEWS May 2025; BLS Employment Projections 2025–35, national). The lowest 10 percent earn less than $38,500 and the highest 10 percent earn more than $77,750. The mean annual wage is $57,790.
The mean hourly wage of $27.00 is 3.7× the federal minimum wage of $7.25. State minimums are higher in most large states. Minimum wage by state →
How does your pay compare with people your age?
Your numbers are not sent or stored. The comparison uses this occupation's BLS wage percentiles, adjusted for age with BLS median weekly earnings by age group (Q3 2026).
Pay by percentile
Annual wage percentiles from the BLS Occupational Employment and Wage Statistics (OEWS). Percentiles are a good proxy for pay by experience.
Projected pay for Engine and Other Machine Assemblers (3, 5 and 10 years)est.
Today $53,710 → in 3 years $57,600 → in 5 years $60,400 → in 10 years $67,900 (10-year range $58,400–$78,800). The model assumes pay growth of +2.4% per year.
What drives the annual growth rate
Projected pay = current pay × (1 + annual growth)^years. The annual growth rate starts from a base wage-growth rate and adds or subtracts labor demand (BLS projected employment growth), wage momentum and AI replacement risk for each occupation. Projections are not guarantees. How it is calculated →
Outlook score for Engine and Other Machine Assemblers
Each component is a percentile rank among all occupations in the same country (0–100). Weights: labor demand 25, wage momentum / openings 15, pay level 15, AI resistance 25, aging workforce 10 (Japan only), entry barrier 10.
Will AI replace Engine and Other Machine Assemblers? AI replacement risk
How AI is changing this job
A written analysis for this occupation is being prepared.
AI replacement risk compares the parts of a job that are easy to hand to AI or software (processing information, documentation, repetitive computer work) with the parts that are hard to automate (physical work, working closely with people, judgment in unpredictable settings), using O*NET work activities, work context, skills and knowledge. The result is a relative position among all occupations in the country, scaled to 0–100%. Methodology →
Labor demand for Engine and Other Machine Assemblers
Employment projections are from the BLS Employment Projections program (2025–35). Annual openings include both new jobs and replacement of workers who leave the occupation.
Skills, education and requirements for Engine and Other Machine Assemblers
Key skills
O*NET skill level ratings (0–7).
Key knowledge areas
What the work involves
Important abilities
Education of workers
Training before entry
Related work experience
Job Zone 2 — some preparation needed (O*NET)
Difficulty of entry: ★★☆☆☆ Fairly easy (from education, training, experience and Job Zone)
How to become engine and other machine assemblers
A step-by-step guide for this occupation is being prepared. The education, training and experience data above show the typical path.
Career path and how to earn more as engine and other machine assemblers
Career-path guidance is being prepared. Pay by percentile is shown in the Pay section.