Diesel Technician

Job Title:

Diesel Technician Job Description

The Diesel Technician inspects, troubleshoots, and repairs diesel trucks, trailers, tractors, and compact construction equipment, ensuring each unit is safe, reliable, and ready for service. This role combines hands-on mechanical work with advanced electronic and computerized diagnostics to identify and resolve issues in mechanical, electrical, hydraulic, and fuel systems. The technician completes routine and preventative maintenance, performs detailed safety inspections, and documents all work accurately in digital shop software while maintaining a clean, safe, and organized work area.

• Inspect, troubleshoot, and diagnose mechanical, electrical, hydraulic, pneumatic, and fuel system issues on diesel trucks, trailers, tractors, and compact construction machinery.
• Overhaul, repair, and replace components on dealership-brand equipment and incoming commercial vehicles, including engines, transmissions, and diesel aftertreatment and emission systems.
• Perform routine and preventative maintenance such as oil changes, fluid flushes, tire services, wheel alignments, and scheduled service intervals to maximize equipment uptime.
• Conduct computerized diagnostic tests and system checks under load using specialized tools such as dynamo meters, engine analyzers, and other electronic diagnostic equipment.
• Diagnose and repair diesel engines, transmissions, and related drivetrain components, ensuring proper performance and reliability.
• Troubleshoot and repair advanced hydraulic systems, including pumps, valves, hoses, and cylinders, using hydraulic schematics and system knowledge.
• Diagnose and repair electrical systems, including wiring, connectors, sensors, and control modules, using electrical system tracing and diagnostic tools.
• Perform trailer repair and inspection, addressing brakes, lights, suspension, and structural components to ensure safe operation.
• Complete MnDOT and federal commercial vehicle safety inspections to verify road and field readiness and compliance with regulatory standards.
• Read and interpret blueprints, schematics, and technical manuals to guide repair and maintenance activities.
• Maintain meticulous, clear service records in digital shop software, documenting diagnostic steps, parts used, labor hours, and completed repairs.
• Follow strict OSHA and shop safety standards, including safe operation of heavy shop lifts, welding equipment, and other tools.
• Keep work bays clean, organized, and free of hazards to support efficient workflow and a safe work environment.
• Support fleet maintenance efforts by inspecting and servicing multiple units, helping ensure consistent performance across the equipment fleet.
• Collaborate with team members and participate in additional brand and technical trainings to stay current with evolving equipment and diagnostic technologies.

• Hands-on experience with diesel maintenance and diesel engine repair on trucks, trailers, tractors, or heavy equipment.
• Strong troubleshooting and diagnostic skills across mechanical, electrical, hydraulic, pneumatic, and fuel systems.
• Proficiency in preventative and routine maintenance, including oil changes, fluid services, tire work, wheel alignments, and scheduled service intervals.
• Experience with diesel engines, transmissions, and related drivetrain components, including diagnosis and repair.
• Ability to perform fleet maintenance and equipment maintenance on a variety of diesel-powered vehicles and machinery.
• Competence in electronic and computerized diagnostics, including the use of diagnostic software, engine analyzers, and related tools.
• Knowledge of advanced hydraulic system troubleshooting and repair.
• Understanding of aftertreatment and emission systems on…