Field Service Mechanic A

Herc Rentals•Vista, CA

About The Position

Herc Rentals is a leading North American equipment rental supplier, founded in 1965, with approximately 607 locations and about 10,000 employees as of June 30, 2026. The Field Service Mechanic A is a master technician who leads field fleet maintenance and repair operations at customer job sites, ensuring rental equipment remains operational and ready for rental. The role applies established branch, regional, and national procedures and quality standards, and mentors Field Service Mechanics B and C. Work is performed safely and professionally, primarily from a fully equipped service truck. The mechanic performs scheduled preventative maintenance, corrective repairs, advanced diagnostics, and repairs on engines, electrical systems, hydraulics, aerial equipment, emissions systems, and other rental fleet equipment. The role also supports field service coordination, work-order and parts management, customer communication, and technician training. It requires working indoors and outdoors, including at active job sites and in varying weather conditions.

Requirements

High school diploma or equivalent.
Valid driver's license with a clean driving record.
Ability to operate a fully equipped service truck and obtain an FMCSA-regulated Driver Qualification File (DQF).
Own a sufficient selection of hand and air/electric tools to complete most repairs and services.
Ability to drive and operate multiple types of vehicles and equipment.
Ability to safely lift up to 50 pounds.
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.
Ability to work outdoors in varying weather conditions and job-site environments.
Ability to understand technical schematics, owner manuals, and product warning labels in the field.
Ability to operate and test boom lifts, forklifts, compressors, portable and stationary generators, hydraulics, pumps, tools, and other equipment.
Ability to follow up with customers in a timely manner and maintain a professional onsite presence.
Ability to handle assorted tools safely in a field environment.
Attention to detail and strong situational awareness on active job sites.
Solid written and verbal communication skills, including the ability to open and close work orders from the field.
Strong computer skills for entering and reviewing work orders remotely.
Strong time-management skills and ability to prioritize multiple service calls.
Ability to work and communicate effectively with all levels of the company, customers, and job-site supervisors.
Interpersonal skills, including effective communication, teamwork, listening, and dependability.
Ability to work both indoors and outdoors as required.
Ability to sit, stand, and walk for extended periods.
Ability to perform repetitive tasks, including stretching, turning, twisting, and reaching overhead.
Ability to bend, crouch, squat, kneel, and stoop for extended periods.

Responsibilities

Maintain preventative maintenance schedules for Herc-owned fleet equipment at active job sites.
Operate and test equipment onsite before and after repairs to verify quality standards.
Independently perform routine maintenance and repairs on fleet equipment and trucks.
Perform oil changes, lubrication, tire, hose, and battery replacements, and related field services.
Recondition or replace heavy equipment parts and diagnose wear and tear onsite.
Keep the service truck and inventory clean, organized, and stocked.
Prepare detailed service reports and repair logs for each visit.
Follow field procedures, protocols, and safety requirements.
Diagnose engines, DC electrical, propane, hydraulic, and fuel systems using diagnostic and measuring tools.
Perform electrical diagnostics and repairs using schematics, including control module replacement or diagnosis and firmware or software reprogramming.
Diagnose lithium electrical issues, intermittent faults, and post-fire failures; repair safety-critical circuits and install aftermarket electrical components.
Diagnose DPF/DEF issues and troubleshoot or calibrate mechanical, electronic, and power-loss problems.
Conduct failure analysis to support policy review and warranty eligibility.
Analyze and test lubrication systems and replace injectors and common rail components.
Repair or reseal hydraulic cylinders and diagnose hydraulic pumps, motors, wiring, and sensors.
Inspect lithium battery charging, recalibrate aerial systems, and conduct annual aerial inspections.
Service emission-control components, including DPF systems, and diagnose hydraulic pressure loss, overheating, and sluggish movement.
Use computerized tools to trace electrical faults, connections, switches, sensors, and safety interlocks.
Assist the shop lead with onsite damage estimates, repairs, and documentation.
Take service calls in the shop lead's absence and dispatch or coordinate Field Service Mechanics for timely repairs.
Assist in training Field Service Mechanic B and C technicians under the shop lead's direction.
Enter and review work orders and order parts through the fleet management system from the field.
Serve as the primary customer contact onsite and maintain a professional, responsive presence.