# Mobile Heavy Equipment Mechanics, Except Engines

> Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and mining.
- **Entity Type:** role
- **Schema Version:** role.v1
- **Soc Code:** 49-3042.00
- **Summary:** Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and mining.

## Aliases

- Equipment Mechanic
- Heavy Equipment Mechanic
- Heavy Equipment Technician
- Mechanic
- Construction Equipment Mechanic
- Equipment Technician
- Field Mechanic
- Field Service Technician
- Field Technician
- Mobile Heavy Equipment Mechanic
- Brake Mechanic
- Bulldozer Mechanic

## Tasks

| Text | Type | Iwa |
| --- | --- | --- |
| Repair and replace damaged or worn parts. | Core | 4.A.3.b.4.c |
| Test mechanical products and equipment after repair or assembly to ensure proper performance and compliance with manufacturers' specifications. | Core | 4.A.1.b.2.f |
| Operate and inspect machines or heavy equipment to diagnose defects. | Core | 4.A.1.b.2.g |
| Read and understand operating manuals, blueprints, and technical drawings. | Core | 4.A.1.a.1.b |
| Dismantle and reassemble heavy equipment using hoists and hand tools. | Core | 4.A.3.a.2.d |
| Overhaul and test machines or equipment to ensure operating efficiency. | Core | 4.A.1.b.2.l |
| Adjust, maintain, and repair or replace subassemblies, such as transmissions and crawler heads, using hand tools, jacks, and cranes. | Core | 4.A.3.a.2.i |
| Repair, rewire, and troubleshoot electrical systems. | Core | 4.A.3.a.2.ah |
| Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. | Core | 4.A.2.b.1.b |
| Examine parts for damage or excessive wear, using micrometers and gauges. | Core | 4.A.1.b.2.d |
| Weld or solder broken parts and structural members, using electric or gas welders and soldering tools. | Core | 4.A.3.a.2.ai |
| Research, order, and maintain parts inventory for services and repairs. | Core | 4.A.4.c.3.a |

## Emerging Tasks


## Activities

| Name | Iwa |
| --- | --- |
| Rewire electrical or electronic systems. | 4.A.3.a.2.ah |
| Repair electrical components. | 4.A.3.b.5.b |
| Maintain inventories of materials, equipment, or products. | 4.A.4.c.3.a |
| Order materials, supplies, or equipment. | 4.A.4.c.3.e |
| Inspect completed work to ensure proper functioning. | 4.A.1.b.2.f |
| Replace worn, damaged, or defective mechanical parts. | 4.A.3.b.4.c |
| Repair worn, damaged, or defective mechanical parts. | 4.A.3.b.4.c |
| Inspect mechanical equipment to locate damage, defects, or wear. | 4.A.1.b.2.g |
| Operate transportation equipment to demonstrate function or malfunction. | 4.A.3.a.4.a |
| Troubleshoot equipment or systems operation problems. | 4.A.2.b.1.b |
| Reassemble equipment after repair. | 4.A.3.a.2.d |
| Dismantle heavy equipment or machinery. | 4.A.3.a.2.s |
| Clean equipment, parts, or tools to repair or maintain them in good working order. | 4.A.3.a.1.c |
| Lubricate equipment to allow proper functioning. | 4.A.3.b.5.a |
| Inspect mechanical components of vehicles to identify problems. | 4.A.1.b.2.d |
| Schedule repair, installation or maintenance activities. | 4.A.2.b.5.b |
| Maintain repair or maintenance records. | 4.A.3.b.6.h |
| Read technical information needed to perform maintenance or repairs. | 4.A.1.a.1.b |
| Test mechanical equipment to ensure proper functioning. | 4.A.1.b.2.l |
| Assemble mechanical components or machine parts. | 4.A.3.a.2.d |
| Align equipment or machinery. | 4.A.3.a.2.ao |
| Solder parts or connections between parts. | 4.A.3.a.2.ai |
| Operate welding equipment. | 4.A.3.a.2.ai |
| Adjust equipment to ensure optimal performance. | 4.A.3.a.2.i |
| Maintain work equipment or machinery. | 4.A.3.b.5.a |
| Fabricate parts or components. | 4.A.3.a.2.aa |
| Supervise employees. | 4.A.4.b.4.a |

## Capabilities

| Name | Family | Value |
| --- | --- | --- |
| Mechanical | knowledge | 4.76 |
| Troubleshooting | transferable_skill | 4.12 |
| Repairing | transferable_skill | 4.12 |
| Equipment Maintenance | transferable_skill | 4 |
| Manual Dexterity | ability | 4 |
| Control Precision | ability | 4 |
| Finger Dexterity | ability | 3.88 |
| Extent Flexibility | ability | 3.88 |
| Near Vision | ability | 3.88 |
| Operations Monitoring | transferable_skill | 3.75 |
| Problem Sensitivity | ability | 3.75 |
| Arm-Hand Steadiness | ability | 3.75 |
| Operation and Control | transferable_skill | 3.62 |
| Multilimb Coordination | ability | 3.62 |
| Visualization | ability | 3.5 |
| Equipment Selection | transferable_skill | 3.38 |
| Quality Control Analysis | transferable_skill | 3.38 |
| Deductive Reasoning | ability | 3.38 |
| Information Ordering | ability | 3.38 |
| Reaction Time | ability | 3.38 |
| Customer and Personal Service | knowledge | 3.29 |
| Mathematics | knowledge | 3.27 |
| Critical Thinking | essential_skill | 3.25 |
| Inductive Reasoning | ability | 3.25 |
| Flexibility of Closure | ability | 3.25 |
| Perceptual Speed | ability | 3.25 |
| Static Strength | ability | 3.25 |
| Reading Comprehension | essential_skill | 3.12 |
| Complex Problem Solving | transferable_skill | 3.12 |
| Judgment and Decision Making | transferable_skill | 3.12 |
| Written Comprehension | ability | 3.12 |
| Category Flexibility | ability | 3.12 |
| Selective Attention | ability | 3.12 |
| Rate Control | ability | 3.12 |
| Trunk Strength | ability | 3.12 |
| Far Vision | ability | 3.12 |
| Visual Color Discrimination | ability | 3.12 |
| Computers and Electronics | knowledge | 3.06 |
| Public Safety and Security | knowledge | 3.01 |
| Active Listening | essential_skill | 3 |

## Skills

| Name | Type |
| --- | --- |
| Equipment Maintenance | Specialized Skill |
| Finger Dexterity | Common Skill |
| Visualization | Specialized Skill |
| Information Ordering | Specialized Skill |
| Equipment Selection | Specialized Skill |
| Deductive Reasoning | Common Skill |
| Mathematics | Common Skill |
| Inductive Reasoning | Common Skill |
| Critical Thinking | Common Skill |
| Reading Comprehension | Common Skill |
| Complex Problem Solving | Common Skill |
| Writing | Common Skill |
| Time Management | Common Skill |
| Speech Recognition | Specialized Skill |
| Microsoft Word | Common Skill |
| Microsoft Outlook | Common Skill |
| Microsoft Excel | Common Skill |
| Active Listening | Common Skill |
| Active Learning | Common Skill |
| English Language | Common Skill |
| Social Perceptiveness | Common Skill |
| Depth Perception | Common Skill |
| Systems Analysis | Specialized Skill |
| Instructing | Specialized Skill |
| Learning Strategies | Specialized Skill |
| Physics | Specialized Skill |
| Negotiation | Common Skill |
| Installation | Specialized Skill |
| Chemistry | Specialized Skill |
| Database Software | Specialized Skill |
| Geography | Specialized Skill |
| Telecommunications | Specialized Skill |
| Psychology | Specialized Skill |
| Biology | Specialized Skill |
| Foreign Language | Common Skill |

## Tools

| Example | Category | Hot | In Demand |
| --- | --- | --- | --- |
| Microsoft Excel | Spreadsheet software | yes | no |
| Microsoft Office software | Office suite software | yes | no |
| Microsoft Outlook | Electronic mail software | yes | no |
| Microsoft Word | Word processing software | yes | no |
| Database software | Data base user interface and query software | no | no |
| Fleet management software | Materials requirements planning logistics and supply chain software | no | no |
| Maintenance management software | Facilities management software | no | no |
| Recordkeeping software | Data base user interface and query software | no | no |

## Work Context

| Name | Value |
| --- | --- |
| Wear Common Protective or Safety Equipment such as Safety Shoes, Glasses, Gloves, Hearing Protection, Hard Hats, or Life Jackets | 5 |
| Exposed to Contaminants | 4.69 |
| Face-to-Face Discussions with Individuals and Within Teams | 4.66 |
| Spend Time Using Your Hands to Handle, Control, or Feel Objects, Tools, or Controls | 4.65 |
| Indoors, Not Environmentally Controlled | 4.64 |
| Exposed to Hazardous Equipment | 4.55 |
| Frequency of Decision Making | 4.5 |
| Outdoors, Exposed to All Weather Conditions | 4.49 |
| Exposed to Cramped Work Space, Awkward Positions | 4.49 |
| Exposed to Sounds, Noise Levels that are Distracting or Uncomfortable | 4.44 |
| Exposed to Very Hot or Cold Temperatures | 4.44 |
| Importance of Being Exact or Accurate | 4.34 |
| Telephone Conversations | 4.33 |
| Work With or Contribute to a Work Group or Team | 4.3 |
| Contact With Others | 4.27 |
| Spend Time Standing | 4.23 |
| Exposed to Minor Burns, Cuts, Bites, or Stings | 4.21 |
| Freedom to Make Decisions | 4.2 |
| Impact of Decisions on Co-workers or Company Results | 4.13 |
| Spend Time Bending or Twisting Your Body | 4.1 |
| In an Enclosed Vehicle or Operate Enclosed Equipment | 4.06 |
| Health and Safety of Other Workers | 4.01 |
| Time Pressure | 3.93 |
| E-Mail | 3.9 |
| Spend Time Making Repetitive Motions | 3.83 |
| Determine Tasks, Priorities and Goals | 3.76 |
| Exposed to Extremely Bright or Inadequate Lighting Conditions | 3.74 |
| In an Open Vehicle or Operating Equipment | 3.68 |
| Coordinate or Lead Others in Accomplishing Work Activities | 3.62 |
| Consequence of Error | 3.58 |
| Exposed to Hazardous Conditions | 3.53 |
| Importance of Repeating Same Tasks | 3.52 |
| Exposed to Whole Body Vibration | 3.5 |
| Spend Time Kneeling, Crouching, Stooping, or Crawling | 3.5 |
| Deal With External Customers or the Public in General | 3.4 |
| Written Letters and Memos | 3.1 |
| Spend Time Walking or Running | 3.08 |
| Work Outcomes and Results of Other Workers | 3.07 |
| Physical Proximity | 2.9 |
| Exposed to High Places | 2.79 |

## Preparation

- **Job Zone:** 3
- **Job Zone Name:** Job Zone Three: Medium Preparation Needed
- **Education:** Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.
- **Experience:** Previous work-related skill, knowledge, or experience is required for these occupations. For example, an electrician must have completed three or four years of apprenticeship or several years of vocational training, and often must have passed a licensing exam, in order to perform the job.
- **Svp Range:** (6.0 to < 7.0)

### Education Distribution

| Label | Percentage |
| --- | --- |
| Post-Secondary Certificate | 54.58 |
| High School Diploma | 29.63 |
| Some College Courses | 7.87 |
| Associate's Degree (or other 2-year degree) | 5.28 |
| Less than a High School Diploma | 2.65 |

## Person Fit

| Name | Family | Value |
| --- | --- | --- |
| Realistic | career_interest_type | 7 |
| Mechanics/Electronics | specific_interest_area | 6.6 |
| Physical/Manual Labor | specific_interest_area | 5.16 |
| Engineering | specific_interest_area | 5.03 |
| Conventional | career_interest_type | 4.35 |
| Investigative | career_interest_type | 3.54 |
| Dependability | work_style | 3 |
| Transportation/Machine Operation | specific_interest_area | 2.88 |
| Attention to Detail | work_style | 2.5 |
| Cautiousness | work_style | 2.03 |
| Perseverance | work_style | 1.77 |
| Information Technology | specific_interest_area | 1.74 |
| Mathematics/Statistics | specific_interest_area | 1.7 |
| Agriculture | specific_interest_area | 1.64 |
| Construction/Woodwork | specific_interest_area | 1.6 |
| Nature/Outdoors | specific_interest_area | 1.6 |

## Related Roles

| Soc Code | Slug | Title | Tier |
| --- | --- | --- | --- |
| 49-9041.00 | role-49-9041-00 | Industrial Machinery Mechanics | Primary-Short |
| 49-3031.00 | role-49-3031-00 | Bus and Truck Mechanics and Diesel Engine Specialists | Primary-Short |
| 49-9043.00 | role-49-9043-00 | Maintenance Workers, Machinery | Primary-Short |
| 49-3043.00 | role-49-3043-00 | Rail Car Repairers | Primary-Short |
| 49-2092.00 | role-49-2092-00 | Electric Motor, Power Tool, and Related Repairers | Primary-Short |
| 51-2031.00 | role-51-2031-00 | Engine and Other Machine Assemblers | Primary-Long |
| 49-3041.00 | role-49-3041-00 | Farm Equipment Mechanics and Service Technicians | Primary-Long |
| 53-7041.00 | role-53-7041-00 | Hoist and Winch Operators | Primary-Long |
| 49-9044.00 | role-49-9044-00 | Millwrights | Primary-Long |
| 53-7021.00 | role-53-7021-00 | Crane and Tower Operators | Primary-Long |
| 47-2073.00 | role-47-2073-00 | Operating Engineers and Other Construction Equipment Operators | Supplemental |
| 47-5022.00 | role-47-5022-00 | Excavating and Loading Machine and Dragline Operators, Surface Mining | Supplemental |

## Career Clusters

| Cluster | Slug |
| --- | --- |
| Advanced Manufacturing | advanced-manufacturing |
| Construction | construction |

## Education Level

- **Category:** High school diploma or equivalent

## Study Programs

| Title | Slug |
| --- | --- |
| Agriculture, Agriculture Operations, and Related Sciences | agriculture-agriculture-operations-and-related-sciences |
| Mechanic and Repair Technologies/Technicians | mechanic-and-repair-technologies-technicians |

## Market

- **Median Wage:** 63980
- **Mean Wage:** 67580
- **Pct10Wage:** 45450
- **Pct25Wage:** 53500
- **Pct75Wage:** 78090
- **Pct90Wage:** 92360
- **Employment:** 180270
- **Area Title:** U.S.

## Industries


### Top

| Naics | Slug | Title | Level | Employment | Median Wage | Lq |
| --- | --- | --- | --- | --- | --- | --- |
| 42 | 42 | Wholesale Trade | Sector | 49720 | 66470 | 7.05 |
| 23 | 23 | Construction | Sector | 43190 | 62400 | 4.55 |
| 53 | 53 | Real Estate and Rental and Leasing | Sector | 20820 | 61160 | 7.52 |
| 48-49 | 48-49 | Transportation and Warehousing | Sector | 11020 | 78110 | 1.28 |
| 21 | 21 | Mining, Quarrying, and Oil and Gas Extraction | Sector | 10940 | 69560 | 16.32 |
| 81 | 81 | Other Services (except Public Administration) | Sector | 9740 | 62530 | 1.88 |
| 31-33 | 31-33 | Manufacturing | Sector | 7760 | 63980 | 0.52 |
| 56 | 56 | Administrative and Support and Waste Management and Remediation Services | Sector | 5230 | 58170 | 0.5 |
| 237130 | 237130 | Power and Communication Line and Related Structures Construction | National industry | 2160 | 63370 | 7.89 |
| 44-45 | 44-45 | Retail Trade | Sector | 1860 | 52320 | 0.1 |
| 423820 | 423820 | Farm and Garden Machinery and Equipment Merchant Wholesalers | National industry | 1500 | 63180 | 11.25 |
| 11 | 11 | Agriculture, Forestry, Fishing and Hunting | Sector | 1420 | 53040 | 2.87 |

### Concentrated

| Naics | Slug | Title | Level | Employment | Lq |
| --- | --- | --- | --- | --- | --- |
| 21 | 21 | Mining, Quarrying, and Oil and Gas Extraction | Sector | 10940 | 16.32 |
| 423820 | 423820 | Farm and Garden Machinery and Equipment Merchant Wholesalers | National industry | 1500 | 11.25 |
| 237130 | 237130 | Power and Communication Line and Related Structures Construction | National industry | 2160 | 7.89 |
| 53 | 53 | Real Estate and Rental and Leasing | Sector | 20820 | 7.52 |
| 42 | 42 | Wholesale Trade | Sector | 49720 | 7.05 |
| 23 | 23 | Construction | Sector | 43190 | 4.55 |
| 238290 | 238290 | Other Building Equipment Contractors | National industry | 660 | 3.68 |
| 221112 | 221112 | Fossil Fuel Electric Power Generation | National industry | 290 | 3.48 |
- **Count:** 32

## Ai Signals

| Source | Label | Score | Scale | Release |
| --- | --- | --- | --- | --- |
| frey_osborne | Computerization probability | 0.4 | 0-1 probability | 2013-baseline-2016-employment-snapshot |
| felten_aioe | AI occupational exposure | -1.169815 | relative exposure score | 2021-plus-generative-ai-workbooks |
| felten_image_generation_aioe | Image generation occupational exposure | -0.7082888 | relative exposure score | 2021-plus-generative-ai-workbooks |
| felten_language_modeling_aioe | Language modeling occupational exposure | -1.258737 | relative exposure score | 2021-plus-generative-ai-workbooks |

## Ai Outlook


### Index

- **Value:** 18
- **Percentile:** 15
- **Band:** Low
- **Version:** ai-exposure-index-v1

#### Components

| Percentile | Source |
| --- | --- |
| 12 | felten_aioe |
| 20 | openai_gpts_are_gpts |
| 22 | microsoft_working_with_ai |
- **Component Count:** 3

### Exposure

| Source | Label | Value | Percentile | Band | Note |
| --- | --- | --- | --- | --- | --- |
| felten_aioe | Overall AI exposure (Felten et al.) | -1.169815 | 12 | Low | How much this job's abilities overlap with what AI systems can do, across many AI capabilities. A relative research score, not a forecast of job loss. |
| eloundou_gamma | LLM task exposure, γ (OpenAI / Eloundou) | 0.15000000000000002 | 20 | Low | Share of this job's tasks where a large language model plus simple tools could cut the time to do them by at least half. γ is capped at 1.0 and many jobs reach that ceiling, so treat a top score as 'in the top group', not a precise rank. |
| microsoft_applicability | AI assistant applicability (Microsoft) | 0.07721258285402338 | 22 | Low | How applicable today's AI assistants are to this job's activities, measured from real Microsoft Copilot conversations. Applicability is not the same as replacement. |

### Frey Historical

- **Source:** frey
- **Label:** Computerization probability (Frey & Osborne, 2013)
- **Value:** 0.4
- **Percentile:** 44
- **Band:** Moderate
- **Note:** A pre-LLM (2013) estimate of how automatable this job is by computerization and robotics. Shown for historical context only — it is not part of any current AI ranking.
- **Teleworkable:** no

### Eloundou

- **Alpha:** 0.05
- **Beta:** 0.1
- **Gamma:** 0.15000000000000002

### Usage Tasks

| Task | Usage Percent | Importance |
| --- | --- | --- |
| Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. | 0.003286649220037057 | 4.17 |
| Examine parts for damage or excessive wear, using micrometers and gauges. | 0.002567694703153951 | 4.02 |
- **Usage Release:** 2026-01-15-v4-plus-2025-03-27-v2

### Bls

- **Growth Percent:** 5.8
- **Growth Percentile:** 79
- **Direction:** About average
- **Annual Openings Thousands:** 16.5
- **Annual Openings Percentile:** 75
- **Employment2024Thousands:** 188.7
- **Employment2034Thousands:** 199.6

### Sources

| Source | Version |
| --- | --- |
| bls_employment_projections | 2024-2034 |
| dingel_neiman | dingel-neiman-workathome |
| felten_aioe | felten-raj-seamans-aioe |
| frey_osborne | frey-osborne-automation |
| microsoft_working_with_ai | working-with-ai |
| openai_gpts_are_gpts | gpts-are-gpts |

## Ai Playbook

- **Trusted Task Count:** 1
- **Task Count:** 1
- **Total Sample:** 58
- **Autonomy Median:** 4
- **Dominant Collaboration:** learning
- **Automation Share:** 55.18
- **Augmentation Share:** 36.21

### Collaboration

| Label | Percent |
| --- | --- |
| learning | 36.21 |
| directive | 27.59 |
| feedback loop | 27.59 |

### Use Case

| Label | Percent |
| --- | --- |
| personal | 96.55 |

### Delegated Tasks

| Task | Usage Percent | Collaboration | Autonomy Median | Sample Count |
| --- | --- | --- | --- | --- |
| Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. | 0.00580072509063633 | learning | 4 | 58 |

### Boundary Tasks

| Task | Human Needed Percent | Sample Count |
| --- | --- | --- |
| Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. | 96.55172413793103 | 58 |

### Seed Prompts

| Prompt | Collaboration |
| --- | --- |
| Teach me how to diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices, then check my work as I try it myself. | learning |
- **Release:** 2026-01-15-v4-plus-2025-03-27-v2

## Counts

- **Tasks:** 20
- **Skills:** 35
- **Capabilities:** 120
- **Tools:** 8
- **Related Roles:** 20

## Source

- **Dataset:** gold.onet_role_starter_surface
- **Version:** 30.3
- **Generated At:** 2026-06-02T21:00:32.945303+00:00
- **Content Hash:** f7b1f04a22d9e68e