Field Mechanic

The Field Mechanic is a critical role responsible for the high-level maintenance, diagnostic troubleshooting, and repair of both stationary asphalt plant equipment, mobile heavy machinery, and on-road assets. This position operates primarily in the field, traveling to various plant sites to ensure maximum operational uptime and efficiency.

As a key member of the maintenance team, the Field Mechanic must embody Martin Marietta’s ‘Safety First’ culture, prioritizing a zero‑incident environment while performing complex mechanical, hydraulic, and electrical repairs. The role requires a highly motivated individual capable of working independently in various outdoor environments to support the production of hot mix asphalt materials.

• Inspect, diagnose, and repair asphalt plant components, including conveyor systems, shakers, screens, pumps, gearboxes, crushers, and burners.
• Perform skilled mechanical repairs on diesel‑powered mobile equipment (loaders, haul trucks, pavers) including engine rebuilds, transmission repairs, and the removal/installation of major mechanical parts.
• Utilize cutting torches, welders (MIG/TIG/Stick), and grinders to perform field fabrication, structural repairs, and equipment modifications.
• Execute scheduled PM services and lubrication protocols according to manufacturer specifications and Martin Marietta’s Maintenance Module.
• Conduct oil sampling, filter changes, and pressure testing to identify potential failures before they occur.
• Maintain accurate electronic and paper documentation of all work performed, materials used, and equipment health status.
• Perform intermediate to advanced troubleshooting of hydraulic, pneumatic, and electrical systems.
• Use diagnostic software and tools (CAT ET, scanners) to analyze engine performance and system faults on modern heavy equipment.
• Interpret technical manuals, blueprints, and hydraulic/electrical schematics to execute precise repairs.
• Actively participate in all safety initiatives, including SLAM (Stop, Look, Analyze, Manage) and pre‑shift safety inspections of work areas and equipment.
• Conduct mandatory OSHA pre‑shift safety inspections of work areas and equipment.
• Strictly adhere to Lock‑Out/Tag‑Out (LOTO) procedures and all company safety initiatives (Guardian Angel Creed).
• Actively participate in the hazard recognition program by documenting near‑misses and implementing safety improvements.
• Maintain a clean and organized service truck and work area to prevent hazards and ensure environmental compliance.
• Collaborate with Plant Managers and Superintendents to prioritize backlogs and minimize production downtime.
• Operate support equipment such as cranes, man‑lifts, loaders, and haul trucks in a safe and efficient manner.
• Mentor and coach junior maintenance staff and plant operators on best practices for equipment care and minor repairs.

• Vocational training or relevant experience

• 1+ years of experience in Heavy Equipment Maintenance specifically with brands such as CAT, Komatsu, Volvo, or John Deere. Asphalt experience is preferred.

• Mechanical analysis
• Design tools
• Mechanical controls
• Mechanical diagrams and blueprints
• Mechanical theory