Field Service Mechanic

About This Role

As a Field Heavy Duty Equipment Mechanic, you are a master technician who will lead fleet maintenance and repair operations at customer job sites. Your mechanical expertise ensures that Herc Rentals equipment remains operational and ready for rental, achieved through effective preventative and corrective maintenance programs.

Responsibilities

• Maintain PM schedules for Herc-owned fleet at active job sites.
• Operate/test equipment onsite to confirm quality standards before and after repairs.
• Independently perform routine maintenance and repairs on fleet equipment and trucks.
• Perform oil changes, lubrication, tire/hose/battery replacements, and related field services.
• Recondition/replace heavy equipment parts and diagnose wear/tear onsite.
• Keep service truck and inventory clean, organized, and stocked.
• Produce detailed service reports and repair logs per visit.
• Follow field procedures, protocols, and safety requirements; other duties as assigned.
• Diagnose engines, DC electrical, propane, hydraulic, and fuel systems onsite using diagnostic/hand tools and measuring instruments.
• Repair using electrical schematics; inspect overvoltage protection and indicator lights.
• Replace/diagnose control modules; reprogram firmware/software via laptop/tablet tools.
• Apply computer-controlled diagnostics to resolve electrical issues without branch return.
• Diagnose lithium electrical issues, intermittent faults, and post-fire failure analysis.
• Diagnose/repair safety-critical circuits to restore equipment onsite; install aftermarket electrical components.
• Diagnose DPF/DEF system issues; troubleshoot and calibrate mechanical, electronic, and power loss issues.
• Conduct failure analysis supporting policy review and warranty eligibility.
• Analyze/test lubrication systems; replace injectors and common rail components.
• Repair/reseal hydraulic cylinders; diagnose pumps, motors, wiring, sensors.
• Inspect lithium battery charging; recalibrate aerial systems; perform annual aerial inspections.
• Service emission control components, including DPF.
• Diagnose pressure loss, overheating, sluggish movement.
• Use computerized tools to trace electrical faults, connections, switches, sensors, and safety interlocks.
• Assist shop lead with damage estimates, repairs, and documentation onsite.
• Take service calls in shop lead's absence; dispatch/coordinate Field Service Mechanics for timely repairs.
• Assist in training other Field Service Mechanics under shop lead direction.
• Enter/review work orders and order parts via fleet management system from the field.