Job Summary

The Diesel Mechanic is responsible for inspecting, diagnosing, repairing, and maintaining diesel-powered trucks and related equipment used in commercial CDL operations. This role ensures all fleet vehicles meet Department of Transportation (DOT) safety standards and are kept in reliable, road-ready condition to support company operations.

Key Responsibilities

Vehicle Maintenance & Repair

• Perform routine maintenance on Class A and Class B CDL trucks (oil changes, filter replacements, brake adjustments, etc.)
• Diagnose mechanical, electrical, and hydraulic issues using diagnostic tools and manuals
• Repair or replace defective components including engines, transmissions, brakes, suspension systems, and fuel systems
• Conduct preventive maintenance services to minimize breakdowns and downtime

Inspections & Compliance

• Perform DOT inspections and ensure compliance with federal and state regulations
• Complete pre-trip and post-trip inspections as needed
• Maintain accurate service, inspection, and repair records
• Ensure all trucks meet safety standards before returning to service

Troubleshooting & Diagnostics

• Use computer diagnostic equipment and software to identify issues
• Troubleshoot engine performance, emissions systems, and electronic control modules (ECMs)
• Test vehicles after repair to ensure proper operation

Shop & Equipment Management

• Maintain cleanliness and organization of shop and tools
• Properly use and care for diagnostic and repair equipment
• Order parts and maintain inventory as needed

Safety & Team Collaboration

• Follow all workplace safety protocols and OSHA guidelines
• Communicate effectively with drivers, dispatch, and management regarding vehicle status
• Respond to road calls or emergency breakdowns when required