Lead Field Service Mechanic - Onsite Diagnostics

Herc Rentals Inc.; Little Rock (AR); On-site; USD 41,000 - 48,000; Full time

Benefits offered by this job

Medical, Dental, and Vision Coverage

401(k) plan with company match

Paid Time Off

Life Insurance

Job summary

Herc Rentals Inc. is seeking a Field Service Mechanic A to lead fleet maintenance at customer job sites, ensuring equipment remains on the rental “ready line” through proactive maintenance performed from a fully equipped service truck.

You will diagnose engines, electrical, hydraulic, and fuel systems, reprogram firmware, and mentor junior techs. A high school diploma and valid driver’s license are required, with outdoor work in varying conditions expected.

Qualifications

• High school diploma or equivalent.
• Demonstrated mastery of Field Service Mechanic B and C-level tasks.

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 tools.
• 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 training Field Service Mechanic B/C techs under shop lead direction.
• Enter/review work orders and order parts via fleet management system from the field.
• Serve as primary customer contact onsite, maintaining a professional, responsive presence.

Skills

Field service

Diagnostics

Electrical systems

Hydraulic systems

Safety compliance

Customer communication

Mentorship

Fleet management

Tool proficiency

Manual dexterity

Education

High school diploma

Tools

Diagnostic tools

Fleet management systems

Electronic diagnostics equipment

Laptop/tablet tools

Job description

Herc Rentals Inc. is seeking a Field Service Mechanic A to lead fleet maintenance at customer job sites, ensuring equipment remains on the rental “ready line” through proactive maintenance performed from a fully equipped service truck.

You will diagnose engines, electrical, hydraulic, and fuel systems, reprogram firmware, and mentor junior techs. A high school diploma and valid driver’s license are required, with outdoor work in varying conditions expected.