Heavy Truck Diesel Mechanic

Winninger Excavating, Inc.; Naperville (IL); On-site; USD 45,000 - 65,000; Full time

Benefits offered by this job

Opportunity for growth and development

Job summary

A construction contractor in Naperville is seeking a heavy truck diesel mechanic. The role involves diagnosing mechanical issues, performing routine maintenance, and providing field service support. Candidates should have a valid CDL-A, experience in diesel maintenance, and strong knowledge of diesel systems. This position offers opportunities for growth and development within the company.

Qualifications

• Valid CDL-A Driver’s License with clean driving record.
• 3–5 years of experience in diesel truck maintenance and repair.
• Ability to lift heavy components (50+ lbs) and work in outdoor conditions.

Responsibilities

• Inspect and diagnose mechanical, electrical, and hydraulic issues.
• Conduct routine maintenance like oil changes, brake service, filter replacements.
• Provide mobile repair services to job sites as needed.

Skills

Knowledge of diesel engines

Hydraulic systems

Electrical systems

Air brakes

Proficiency with diagnostic software

Education

High school diploma or GED

Technical certification in diesel technology

Tools

Diagnostic tools

Maintenance tools

Job description

Winninger Excavating, Inc. is a growing site utility and Mass Earthwork contractor based out of Naperville, IL. We service clients in multiple sectors of the construction Industry from Private, DOT, Industrial, Landfill, to Residential. We are committed to our core values and being the preferred contractor by choice. We are currently looking for a heavy truck diesel mechanic to join our growing team.

Duties include but not limited to:

• Inspect and diagnose mechanical, electrical, and hydraulic issues in diesel trucks and trailers.
• Use diagnostic tools and software to identify faults and recommend corrective actions.
• Perform DOT inspections and ensure compliance with federal and state regulations.

Maintenance & Repairs

• Conduct routine maintenance: oil changes, brake service, filter replacements, tire rotations, etc.
• Repair or replace engines, transmissions, fuel systems, cooling systems, and drivetrains.
• Maintain air brake systems, suspension components, and hydraulic systems.

Field Service Support

• Provide mobile repair services to job sites as needed.
• Respond to emergency breakdowns and perform on-site troubleshooting.
• Coordinate with operators and site supervisors to minimize equipment downtime.

Parts & Inventory

• Track parts usage and maintain accurate inventory records.
• Order parts and supplies in coordination with the Fleet Manager.
• Maintain organized workspaces and ensure tools are in good working condition.

Safety & Compliance

• Follow OSHA, DOT, and company safety protocols at all times.
• Maintain detailed service logs and repair documentation.

Applicants should possess:

• Valid CDL-A Driver’s License with clean driving record.
• High school diploma or GED; technical certification in diesel technology preferred.
• 3–5 years of experience in diesel truck maintenance and repair.
• Strong knowledge of diesel engines, hydraulics, electrical systems, and air brakes.
• ASE certifications in Medium/Heavy Truck (T-series) a plus.
• Ability to lift heavy components (50+ lbs) and work in outdoor conditions.
• Proficiency with diagnostic software and tools.

What we offer you:

• An environment that offers opportunity for growth, development.