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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.

Median Annual Pay
$50,270
Range: $36,250 - $72,160
Training Time
Less than 6 months
AI Resilience
🟡AI-Augmented
Education
High school diploma or equivalent

📋Key Responsibilities

  • 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.

💡Inside This Career

The engine assembler builds power systems—constructing engines, turbines, and the machines that industry depends on. A typical day centers on assembly work. Perhaps 70% of time goes to assembly: positioning components, fastening parts, installing piping, verifying clearances. Another 20% involves testing—operating completed units, checking specifications, adjusting as needed. The remaining time addresses blueprint reading and documentation.

People who thrive as engine assemblers combine mechanical skill with precision and the systematic approach that complex machines require. Successful assemblers develop expertise with engine systems while building the testing abilities that functional verification demands. They must assemble components in proper sequence with exact tolerances. Those who struggle often cannot visualize how components fit together or find the heavy work demanding. Others fail because they cannot achieve the precision that engine performance requires.

Engine assembly represents heavy manufacturing, with workers building the power systems that construction, extraction, and industrial equipment depend on. The field serves engine manufacturers and heavy equipment producers. Engine assemblers appear in discussions of manufacturing careers, skilled production, and the workers who build industrial power systems.

Practitioners cite the tangible results and the complexity as primary rewards. Building complete engines is satisfying. The mechanical work is engaging. The skills are valued. The products are substantial and important. The testing reveals the results of the work. Some positions offer good compensation. Common frustrations include the physical demands and the precision pressure. Many find that the lifting and positioning are strenuous. The precision requirements are exacting. Defects in engines are serious. The noise from testing is significant. Production pressure exists. The industry cycles affect employment.

This career requires mechanical training and assembly experience. Strong mechanical aptitude, precision, and physical capability are essential. The role suits those who want heavy manufacturing work building complete machines. It is poorly suited to those uncomfortable with physical demands, wanting light assembly, or preferring simple products. Compensation is moderate to good for skilled engine assembly.

📈Career Progression

1
Entry (10th %ile)
0-2 years experience
$36,250
$32,625 - $39,875
2
Early Career (25th %ile)
2-6 years experience
$40,480
$36,432 - $44,528
3
Mid-Career (Median)
5-15 years experience
$50,270
$45,243 - $55,297
4
Experienced (75th %ile)
10-20 years experience
$67,210
$60,489 - $73,931
5
Expert (90th %ile)
15-30 years experience
$72,160
$64,944 - $79,376

📚Education & Training

Requirements

  • Entry Education: High school diploma or equivalent
  • Experience: Some experience helpful
  • On-the-job Training: Few months to one year

Time & Cost

Education Duration
0-0 years (typically 0)
Estimated Education Cost
$0 - $0
Can earn while learning
Source: college board (2024)

🤖AI Resilience Assessment

AI Resilience Assessment

Default: Moderate AI impact with balanced human-AI collaboration expected

🟡AI-Augmented
Task Exposure
Low

How much of this job involves tasks AI can currently perform

Automation Risk
Low

Likelihood that AI replaces workers vs. assists them

Job Growth
Declining Quickly
-21% over 10 years

(BLS 2024-2034)

Human Advantage
Weak

How much this role relies on distinctly human capabilities

Sources: AIOE Dataset (Felten et al. 2021), BLS Projections 2024-2034, EPOCH FrameworkUpdated: 2026-01-02

💻Technology Skills

CAD software (SolidWorks)Microsoft ExcelERP systems (SAP)Blueprint reading softwareQuality inspection systems

Key Abilities

Arm-Hand Steadiness
Manual Dexterity
Finger Dexterity
Near Vision
Visualization
Problem Sensitivity
Information Ordering
Control Precision
Multilimb Coordination
Static Strength

🏷️Also Known As

Air Conditioning Coil Assembler (AC Coil Assembler)Aircraft Engine AssemblerAircraft Power Plant AssemblerAircraft Powerplant AssemblerAssemblerAssembler ErectorAssembling Motor BuilderAssembly Line WorkerAutomation Machine BuilderAutomobile Engine Assembler+5 more

🔗Related Careers

Other careers in production

🔗Data Sources

Last updated: 2025-12-27O*NET Code: 51-2031.00

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