The Diesel/Heavy Equipment Mechanic is responsible for diagnosing, maintaining, and repairing diesel-powered trucks and heavy equipment to ensure safe, reliable, and efficient operation. This position performs preventive maintenance, mechanical repairs, and troubleshooting of diesel engines, hydraulic systems, electrical components, and powertrains, with field service provided as needed. The mechanic supports operational productivity by minimizing equipment downtime, maintaining regulatory compliance, and ensuring equipment remains in safe operating condition.

Responsibilities

• Perform preventive maintenance and scheduled service on heavy-duty trucks and construction equipment, including oil changes, filter replacements, lubrication, and routine adjustments.
• Conduct equipment inspections, including Department of Transportation (DOT) inspections when qualified, to identify deficiencies and verify compliance with applicable safety and regulatory requirements.
• Diagnose and repair diesel engines, transmissions, powertrains, hydraulic systems, and electrical components using appropriate diagnostic equipment and repair procedures.
• Service or replace engine components, turbochargers, fuel systems, cooling systems, and related mechanical assemblies.
• Troubleshoot and repair hydraulic cylinders, pumps, hoses, control valves, and associated components.
• Inspect and maintain air and hydraulic braking systems, including the replacement of worn or defective components.
• Perform electrical diagnostics and repairs involving wiring, batteries, starters, alternators, and related systems.
• Service and repair heavy-duty trucks, including Peterbilt, Kenworth, and Volvo, as well as Caterpillar excavators, dozers, and other construction equipment.
• Inspect and repair tracks, undercarriages, differentials, and related drivetrain components.
• Complete authorized welding and fabrication repairs in accordance with applicable safety and equipment requirements.
• Respond to equipment breakdowns and perform repairs at the fabrication shop or designated field locations to minimize operational disruptions.
• Evaluate equipment conditions, identify necessary repairs, and recommend corrective actions or component replacements.
• Maintain accurate service records, inspection reports, work orders, and documentation of completed repairs.
• Coordinate with Maintenance and Operations personnel to prioritize repairs, identify parts requirements, and schedule equipment servicing.
• Maintain tools, equipment, and work areas in a clean, organized, and safe condition.
• Follow manufacturer specifications, company safety procedures, and applicable OSHA and DOT regulations.
• Perform other related duties as assigned.

Knowledge, Skills, and Abilities

• Comprehensive knowledge of diesel engines, heavy-duty trucks, construction equipment, and associated mechanical systems.
• Strong understanding of hydraulic, electrical, fuel, cooling, braking, transmission, and drivetrain systems.
• Proficiency in mechanical troubleshooting, fault diagnosis, and equipment repair using electronic diagnostic tools and manufacturer service information.
• Knowledge of preventive maintenance procedures, equipment inspections, and industry repair standards.
• Familiarity with Peterbilt, Kenworth, Volvo, Caterpillar, and comparable heavy-duty equipment.
• Skilled in operating hand tools, power tools, precision measuring instruments, and specialized diagnostic equipment.
• Working knowledge of welding and fabrication techniques associated with equipment repair.
• Understanding of DOT inspection requirements, OSHA regulations, and safe equipment maintenance practices.
• Strong mechanical aptitude and analytical skills to identify equipment failures and determine appropriate repair solutions.
• Effective organizational and time management skills to prioritize maintenance activities and meet operational needs.
• Attention to detail and commitment to accurate documentation, quality workmanship, and equipment reliability.
• Clear verbal and written communication skills for coordinating repairs and reporting equipment conditions.
• Sound judgment in evaluating safety concerns, determining equipment serviceability, and recommending corrective actions.
• Demonstrated initiative, reliability, and accountability when working independently or collaboratively in shop and field environments.

Education/Experience

• High school diploma or General Educational Development (GED) equivalent required.
• Three (3) to five (5) years of experience as a diesel mechanic, heavy equipment mechanic, or in a comparable equipment maintenance and repair role required.
• Experience diagnosing and repairing diesel engines, hydraulic systems, electrical components, and powertrains required.
• Technical or vocational training in diesel technology, heavy equipment maintenance, automotive technology, or a related field preferred.
• Experience servicing Peterbilt, Kenworth, Volvo, Caterpillar, or comparable heavy-duty equipment preferred.
• Automotive Service Excellence (ASE) certification or Original Equipment Manufacturer (OEM) certifications preferred.
• Valid driver's license required; Commercial Driver's License (CDL) preferred.
• Personal tools necessary for routine maintenance and repairs required; shop tools and specialty equipment provided by the company.

Physical Requirements/Work Environment

• Work is primarily performed on-site at the company's fabrication shop, including maintenance areas, equipment yards, and other designated workspaces, with field service at construction sites or other locations as needed.
• Frequent standing, walking, bending, stooping, kneeling, crouching, and reaching while inspecting, servicing, and repairing equipment.
• Physical demands include lifting, carrying, pushing, or pulling tools, parts, and equipment weighing up to 50 pounds.
• Regular use of hands and arms to operate tools, manipulate components, and perform repetitive mechanical tasks.
• Duties involve climbing on or around heavy equipment and accessing confined or difficult-to-reach areas to complete inspections and repairs.
• Exposure to shop and industrial conditions, including noise, vibration, dust, fumes, oils, grease, chemicals, moving machinery, and varying temperatures.
• Outdoor maintenance and field service activities involve exposure to changing weather conditions, including heat, cold, rain, and wind.
• Appropriate personal protective equipment (PPE), including safety glasses, protective footwear, gloves, and hearing protection, must be worn in accordance with company safety requirements.
• Occasional travel to construction sites or other designated locations to perform equipment inspections, maintenance, and repairs.
• Work schedules may vary based on equipment breakdowns, maintenance priorities, and operational needs.