Diesel Field Technician

Tall City Diesel Services LLC; Midland, Northern (TX, KY); Hybrid; USD 52,000 - 73,000; Full time

Job summary

Tcdieselservices is seeking a reliable field diesel mechanic in Midland, Texas to perform on-site diagnostics, maintenance, and repairs on diesel engines for trucks, generators, and heavy equipment. This role emphasizes minimizing downtime and clear customer communication while maintaining safety and thorough documentation.

Ideal candidates have two years of hands-on experience, with strong skills in diagnostics, fuel systems, and emissions-related work.

Qualifications

• Two years of hands-on field diesel mechanic experience.
• On-site diagnostics, maintenance, and repairs on diesel engines for trucks, generators, and heavy equipment.
• Focus on minimizing downtime, safety, and clear customer communication.

Responsibilities

• Perform preventative maintenance and inspections: oil/filter changes, coolant service, fuel filter replacement, belts, and hoses.
• Diagnose and repair diesel engine problems: turbochargers, fuel injection systems, injectors, pumps, common-rail components, valve adjustments, compression issues.
• Troubleshoot and repair diesel-related systems: cooling, intake/exhaust, turbo, transmission interfaces, brakes, driveline components.
• Work with emissions and aftertreatment systems: DPF cleaning/diagnosis, DEF checks, basic ECM fault code interpretation.
• Use diagnostic tools and test equipment: multimeter, fuel pressure gauges, compression testers, OBD scanners, handheld code readers.
• Perform roadside and on-site repairs: parts replacement, hose/fitting repair, basic welding, emergency breakdown recovery.
• Complete service reports, parts usage logs, and communicate repair status, cost/time estimates, and safety concerns to dispatch and customers.
• Follow safety protocols (PPE, lockout/tagout) and proper disposal of diesel fuel, oils, and hazardous materials.

Skills

Diesel mechanic

Customer communication

Safety protocols

Downtime reduction

Troubleshooting

Tools

Diagnostic scanners

Multimeter

Compression tester

OBD scanners

Fuel pressure gauge

Welding basics

Job description

Reliable field diesel mechanic with two years of hands on experience performing on-site diagnostics, maintenance, and repairs on diesel engines and related systems for trucks, generators, and heavy equipment. Focused on minimizing downtime, ensuring safety, and delivering clear customer communication.

Job Description

Key Responsibilities

• Perform preventative maintenance and inspections: oil/filter changes, coolant service, fuel filter replacement, belts, and hoses.
• Diagnose and repair diesel engine problems: turbochargers, fuel injection systems (injectors, pumps, common-rail components), valve adjustments, and compression issues.
• Troubleshoot and repair diesel-related systems: cooling, intake/exhaust, turbo, transmission interfaces, brakes, and driveline components.
• Work with emissions and aftertreatment systems: DPF cleaning/diagnosis, DEF system checks, and basic ECM fault code interpretation.
• Use diagnostic tools and test equipment: multimeter, fuel pressure gauges, compression testers, OBD/diagnostic scanners, and handheld code readers.
• Perform roadside and on-site repairs: parts replacement, hose/fitting repair, basic welding, and emergency breakdown recovery.
• Complete service reports, parts usage logs, and communicate repair status, cost/time estimates, and safety concerns to dispatch and customers.
• Follow safety protocols (PPE, lockout/tagout) and proper handling/disposal of diesel fuel, oils, and hazardous materials.

Technical Skills & Tools

• Diesel engine repair (light to medium/heavy duty)
• Fuel injection systems (mechanical and electronic/common rail)
• Turbocharger maintenance and diagnosis
• Basic emissions aftertreatment knowledge (DPF, DEF)
• Electrical troubleshooting (12V–24V), sensor and starter/alternator service
• Use of diagnostic scanners, multimeter, compression tester, fuel pressure gauge, hand and power tools
• Basic welding and fabrication, hose/fitting replacement