Lead Field Service Mechanic – On-Site Repair & Diagnostics

Herc Rentals Inc.; Texas City (TX); On-site; USD 45,000 - 52,000; Full time

Benefits offered by this job

Medical, Dental, Vision Coverage

401(k) plan with company match

Paid Time Off

Job summary

Herc Rentals Inc. in Texas City, TX is seeking a Field Service Mechanic A to lead fleet maintenance at customer job sites and ensure equipment remains ready.

Master technician role with mentorship to B/C level mechanics, performing preventive and corrective maintenance from a fully equipped service truck. Responsibilities include diagnosing engines and electrical systems onsite, performing routine repairs, managing service reports, and ensuring safety standards.

Qualifications

• High School Diploma or equivalent.
• Valid driver's license with a clean driving record; ability to operate a fully equipped service truck and be able to obtain a FMCSA regulated Driver Qualification File (DQF)
• Ownership of sufficient selection of hand and air/electric tools to complete most repairs and services.
• Ability to drive/operate multiple types of vehicles and equipment.
• Ability to safely lift up to 50 lbs.
• Demonstrated mastery of all Field Service Mechanic B and C-level tasks.
• Comprehensive knowledge of electrical, hydraulic, propane, and fuel systems.
• Proficiency with computerized diagnostic tools and fleet management systems.
• Must be able to work outdoors in varying weather conditions and job site environments.

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.

Skills

Electrical systems

Hydraulic systems

Propane systems

Computerized diagnostic tools

Fleet management systems

Leadership/mentorship

Field service experience

Education

High School Diploma or equivalent

Tools

Diagnostic tools

Fleet management systems

Onsite testing equipment

Job description

Herc Rentals Inc. in Texas City, TX is seeking a Field Service Mechanic A to lead fleet maintenance at customer job sites and ensure equipment remains ready.

Master technician role with mentorship to B/C level mechanics, performing preventive and corrective maintenance from a fully equipped service truck. Responsibilities include diagnosing engines and electrical systems onsite, performing routine repairs, managing service reports, and ensuring safety standards.