# 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. - Code: 49-3042.00 (O*NET-SOC; SOC 2018 49-3042) - Family: [Installation, Maintenance & Repair](https://foundation.org.ai/occupations#family-49), one of its 52 occupations - Tasks: 20 tasks (20 core) - Page: https://foundation.org.ai/occupations/49-3042.00 - JSON: https://foundation.org.ai/data/tasks/49-3042.00.json ## What the work is made of 1. Repair and replace damaged or worn parts. Core task · Task 3001 · Rated by 152 people who do the job, July 2017 2. Test mechanical products and equipment after repair or assembly to ensure proper performance and compliance with manufacturers' specifications. Core task · Task 3000 · Rated by 152 people who do the job, July 2017 3. Operate and inspect machines or heavy equipment to diagnose defects. Core task · Task 3002 · Rated by 152 people who do the job, July 2017 4. Read and understand operating manuals, blueprints, and technical drawings. Core task · Task 3008 · Rated by 151 people who do the job, July 2017 5. Dismantle and reassemble heavy equipment using hoists and hand tools. Core task · Task 3004 · Rated by 148 people who do the job, July 2017 6. Overhaul and test machines or equipment to ensure operating efficiency. Core task · Task 3009 · Rated by 147 people who do the job, July 2017 7. Adjust, maintain, and repair or replace subassemblies, such as transmissions and crawler heads, using hand tools, jacks, and cranes. Core task · Task 3014 · Rated by 151 people who do the job, July 2017 8. Repair, rewire, and troubleshoot electrical systems. Core task · Task 18583 · Rated by 151 people who do the job, July 2017 9. Diagnose faults or malfunctions to determine required repairs, using engine diagnostic equipment such as computerized test equipment and calibration devices. Core task · Task 3003 · Rated by 150 people who do the job, July 2017 10. Examine parts for damage or excessive wear, using micrometers and gauges. Core task · Task 3006 · Rated by 151 people who do the job, July 2017 11. Weld or solder broken parts and structural members, using electric or gas welders and soldering tools. Core task · Task 3012 · Rated by 148 people who do the job, July 2017 12. Research, order, and maintain parts inventory for services and repairs. Core task · Task 18584 · Rated by 147 people who do the job, July 2017 13. Fit bearings to adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment. Core task · Task 3011 · Rated by 150 people who do the job, July 2017 14. Schedule maintenance for industrial machines and equipment, and keep equipment service records. Core task · Task 3007 · Rated by 149 people who do the job, July 2017 15. Clean, lubricate, and perform other routine maintenance work on equipment and vehicles. Core task · Task 3005 · Rated by 148 people who do the job, July 2017 16. Assemble gear systems, and align frames and gears. Core task · Task 3010 · Rated by 152 people who do the job, July 2017 17. Clean parts by spraying them with grease solvent or immersing them in tanks of solvent. Core task · Task 3013 · Rated by 151 people who do the job, July 2017 18. Adjust and maintain industrial machinery, using control and regulating devices. Core task · Task 3015 · Rated by 148 people who do the job, July 2017 19. Fabricate needed parts or items from sheet metal. Core task · Task 3016 · Rated by 152 people who do the job, July 2017 20. Direct workers who are assembling or disassembling equipment or cleaning parts. Core task · Task 3017 · Rated by 152 people who do the job, July 2017 ## More in Installation, Maintenance & Repair - [Aircraft Mechanics and Service Technicians](https://foundation.org.ai/occupations/49-3011.00): 38 tasks - [Audiovisual Equipment Installers and Repairers](https://foundation.org.ai/occupations/49-2097.00): 11 tasks - [Automotive Body and Related Repairers](https://foundation.org.ai/occupations/49-3021.00): 25 tasks - [Automotive Glass Installers and Repairers](https://foundation.org.ai/occupations/49-3022.00): 18 tasks - [Automotive Service Technicians and Mechanics](https://foundation.org.ai/occupations/49-3023.00): 30 tasks - [Avionics Technicians](https://foundation.org.ai/occupations/49-2091.00): 13 tasks - [Bicycle Repairers](https://foundation.org.ai/occupations/49-3091.00): 14 tasks - [Bus and Truck Mechanics and Diesel Engine Specialists](https://foundation.org.ai/occupations/49-3031.00): 26 tasks - [Camera and Photographic Equipment Repairers](https://foundation.org.ai/occupations/49-9061.00): 15 tasks - 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