Senior Field Mechanic: Advanced Heavy Equipment Diagnostics

Herin Family Rentals LLC; San Antonio (TX); On-site; USD 60,000 - 85,000; Full time

Job summary

Herin Family Rentals LLC is seeking a Field Mechanic Level 3 in Texas to diagnose and repair complex mechanical, hydraulic, electrical, electronic, emissions, and drive-system problems in the shop and at customer locations for a dirt-heavy rental fleet.

The role requires advanced diagnostics, field-service expertise, and the ability to mentor Level 1 and Level 2 technicians, while maintaining safety and quality during repairs and installations.

Qualifications

• Five or more years of verifiable heavy-equipment, construction-equipment, agricultural-equipment, or rental-equipment field experience.
• Documented manufacturer, dealer, technical-school, or industry training relevant to assigned equipment; additional certifications may be required after hire.
• Advanced ability to interpret wiring diagrams, hydraulic schematics, diagnostic flowcharts, service data, fault codes, and live operating information.
• Strong customer communication, documentation, time-management, and independent decision-making skills.

Responsibilities

• Independently diagnose and repair equipment in the shop and in the field.
• Diagnose complex diesel engine, aftertreatment, hydraulic, hydrostatic, electrical, CAN-bus, electronic control, final-drive, undercarriage, steering, brake, and structural concerns.
• Use manufacturer diagnostic software, service information, fault histories, live data, wiring diagrams, hydraulic schematics, pressure and flow testing, and systematic troubleshooting procedures.
• Mentor Level 1 and Level 2 technicians, assist with difficult repairs, and help reinforce safe, consistent diagnostic practices.

Skills

Heavy equipment diagnostics

CAN-bus diagnostics

Electrical & hydraulic troubleshooting

Field service excellence

Tools

Diagnostic software

Service manuals

Job description

Herin Family Rentals LLC is seeking a Field Mechanic Level 3 in Texas to diagnose and repair complex mechanical, hydraulic, electrical, electronic, emissions, and drive-system problems in the shop and at customer locations for a dirt-heavy rental fleet.

The role requires advanced diagnostics, field-service expertise, and the ability to mentor Level 1 and Level 2 technicians, while maintaining safety and quality during repairs and installations.