Mobile Diesel Field Technician—On‑Site Diagnostics

Tall City Diesel Services LLC; Midland (TX); On-site; USD 30,000 - 47,000; Full time

Job summary

Tall City Diesel Services LLC is seeking a reliable field diesel mechanic to diagnose, maintain, and repair diesel engines on trucks, generators, and heavy equipment. You will operate on-site and mobile units, focusing on minimizing downtime, safety, and clear customer communication.

Ideal candidates have two years of hands-on experience with diesel systems, emissions knowledge, and strong diagnostic skills.

Qualifications

• Two years of hands-on field diesel mechanic experience preferred.
• Experience servicing trucks, generators, and heavy equipment.
• Ability to diagnose, repair, and communicate repair status clearly.

Responsibilities

• Perform preventative maintenance and inspections (oil/filter changes, coolant service, filters, belts, hoses).
• Diagnose and repair diesel engine problems (turbochargers, fuel systems, compression).
• Troubleshoot diesel‑related systems (cooling, exhaust, transmission interfaces, brakes, driveline).
• Work on emissions/aftertreatment systems (DPF, DEF checks).
• Use diagnostic tools (scanners, multimeter, gauges) to test and verify repairs.
• Perform on-site repairs and roadside service; document service reports and cost estimates.

Skills

Diesel repair

Fuel injection systems

Turbocharger maintenance

Emissions aftertreatment

Electrical troubleshooting

Diagnostic tools

Welding & fabrication

Tools

Diagnostic scanners

Multimeter

Compression tester

Fuel pressure gauge

Hand tools

Power tools

Job description

Tall City Diesel Services LLC is seeking a reliable field diesel mechanic to diagnose, maintain, and repair diesel engines on trucks, generators, and heavy equipment. You will operate on-site and mobile units, focusing on minimizing downtime, safety, and clear customer communication.

Ideal candidates have two years of hands-on experience with diesel systems, emissions knowledge, and strong diagnostic skills.