Army MOS · Engineering
91L Construction Equipment Repairer
Overview
A Construction Equipment Repairer performs and supervises field level maintenance on construction equipment. They service equipment used for earthmoving, grading, compaction, lifting, loading, quarrying, rock crushing, mixing, surfacing, water pumping, air compression, pneumatic tools, and powered bridging.
Core Skills
- heavy equipment diagnostics and repair
- preventive and corrective maintenance
- hydraulic and pneumatic systems troubleshooting
- electrical and electronic subsystem repair
- use of technical manuals and schematics
- maintenance recordkeeping and documentation
- shop safety and OSHA practices
- parts identification and requisition
- field maintenance under austere conditions
- team coordination in maintenance shops
Civilian Software & Tools
- Microsoft Excel
- Microsoft Office software
- Microsoft Outlook
- Microsoft Word
- Database software
- Fleet management software
- Maintenance management software
- Recordkeeping software
Civilian Career Paths
- Mechanical Engineering
- Construction Management
- Fleet Management
- Project Management
Training & Development
Getting Started
- Pneumatic Mechanic (PM)
- Mobile Hydraulic Mechanic (MHM)
- Electronic Controls Specialist
- Certified Maintenance and Reliability Technician (CMRT) · Funded · Promotion points
Career Growth
- Electronic Diesel Engine Diagnosis Specialist (L2)
- Industrial Hydraulic Mechanic (IHM)
- Certified Maintenance and Reliability Professional (CMRP) · Funded · Promotion points
- Construction Health and Safety Technician (CHST) · Funded · Promotion points
What the Work Involves
- Repair and replace damaged or worn parts.
- Test mechanical products and equipment after repair or assembly to ensure proper performance and compliance with manufacturers' specifications.
- Operate and inspect machines or heavy equipment to diagnose defects.
- Read and understand operating manuals, blueprints, and technical drawings.
- Dismantle and reassemble heavy equipment using hoists and hand tools.
Related Occupations
- Industrial Machinery Mechanics
- Bus and Truck Mechanics and Diesel Engine Specialists
- Maintenance Workers, Machinery
- Rail Car Repairers
Typical preparation for these civilian roles: vocational training or an associate degree.
Formerly Known As (Legacy)
Retired codes that converted into 91L. Each legacy page documents the cited history.
Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.
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