Diesel Mechanic – Job Description

Position Title: Diesel Mechanic
Department: Maintenance / Fleet Services
Reports To: Fleet Supervisor / Maintenance Manager
Location: Aurora,CO

Position Summary

As a Diesel Mechanic, you will diagnose, repair, and perform scheduled maintenance on diesel-powered equipment and vehicles to ensure safe, reliable, and efficient operation. You will work with a wide range of heavy-duty equipment, including trucks, loaders, excavators, generators, and other diesel-powered machinery used in construction, agriculture, transportation, or industrial settings.

Key Responsibilities

Inspect, diagnose, adjust, and repair diesel engines and related systems including fuel, hydraulic, electrical, braking, and cooling systems.
Perform preventive maintenance, tune-ups, and safety checks on a fleet of vehicles and heavy equipment.
Repair or replace defective parts such as bearings, valves, injectors, pistons, pumps, and turbochargers.
Use computerized diagnostic tools, gauges, and hand tools to troubleshoot engine failures and system malfunctions.
Perform welding, fabrications, and alignment adjustments when required.
Maintain accurate records of inspections, repairs, parts used, and labor hours.
Ensure compliance with safety standards, shop protocols, and environmental regulations.
Communicate with fleet managers and operators to determine issues and recommend solutions.
Participate in emergency repair calls as needed.

Required Qualifications

High school diploma or equivalent.
Proven experience as a diesel mechanic or heavy equipment technician.
Strong understanding of diesel engines, hydraulics, transmissions, and electrical systems.
Ability to read and interpret technical manuals, schematics, and diagnostic data.
Proficiency with diagnostic computer software and standard mechanic tools.
Valid driver’s license; CDL is a plus.
Ability to lift heavy parts, work in varied environments, and adhere to safety procedures.

Preferred Skills

ASE certification (or equivalent).
Experience with fleet maintenance management systems.
Welding and fabrication experience.
Excellent problem-solving and time-management skills.
Good communication and teamwork abilities.

Working Conditions

Work performed in a shop environment as well as outdoors.
Regular use of hand and power tools, diagnostic equipment, and lifting devices.
May be required to work evenings or weekends as workload demands.

#1022CO

Express Office: Aurora (Denver Metro)

13696 East Alameda Avenue

Aurora, CO 80012

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