Heavy Equipment Mechanic_Construction and Qua

Haynes Group, Inc; Naugatuck (CT); On-site; USD 55,000 - 75,000; Full time

Job summary

Haynes Materials in Connecticut seeks a skilled Diesel Truck Mechanic to maintain and repair our fleet of on-road trucks and heavy equipment used in construction and quarry operations.

Responsibilities include diagnosing mechanical, electrical, and hydraulic issues, performing preventive maintenance, and ensuring DOT compliance. The ideal candidate has 5+ years of diesel experience, a strong safety mindset, and good communication skills.

Qualifications

• High school diploma or equivalent.
• 5+ years’ experience as a diesel mechanic with on-road trucks and heavy equipment.
• Proficient in diesel engines, hydraulics, pumps, transmissions, electrical, and air brake systems.
• Proficient with diagnostic software and electrical testing equipment.
• Valid driver’s license with acceptable driving record.

Responsibilities

• Diagnose, repair, and rebuild mechanical, electrical, hydraulic, and safety-related issues on on-road trucks and equipment.
• Perform preventive maintenance: oil changes, lubrication, inspections, and component servicing.
• Repair and rebuild transmissions, clutches, drivelines, differentials, and axles.
• Troubleshoot air brake systems, ABS, suspensions, and wheel-end components.
• Maintain DOT compliance and proper documentation.

Skills

Diesel engine knowledge

Troubleshooting

Preventive maintenance

Electrical systems

Reading schematics

Safety compliance

Communication

Teamwork

Time management

Education

High school diploma or equivalent

Tools

Diagnostic software

Job description

Haynes Materials is seeking an experienced and reliable Heavy Equipment Mechanic to join our team in the construction and quarry industry. The ideal candidate will be responsible for maintaining, troubleshooting, and repairing various heavy equipment used in construction and quarry operations, ensuring optimal performance and minimizing downtime. This role requires a deep understanding of mechanical systems, attention to detail, and the ability to work in a fast-paced, physically demanding environment.

Diesel Mechanic (Trucks/heavy equipment)

Job Description

POSITION SUMMARY

Under the general direction of the Garage Manager, the Diesel Truck Mechanic inspects, diagnoses, maintains, repairs, and rebuilds the company’s fleet of on-road equipment, including tri-axle dump trucks, tractor-trailers, and related support vehicles. Working closely with the full mechanic team, this position keeps the fleet safe, DOT-compliant, and ready to run, minimizing downtime for our operations.

The ideal candidate is a reliable, safety-minded professional who takes pride in quality workmanship, communicates clearly, and works well both independently and as part of a team.

DUTIES AND RESPONSIBILITIES

Diagnostics and Repair

• Identify, diagnose, and repair mechanical, electrical, hydraulic, and safety-related issues on on-road trucks and their working systems.
• Service and repair diesel engines, fuel systems, aftertreatment/emissions systems (DPF, DEF/SCR, EGR), cooling systems, and air intake systems.
• Repair and rebuild transmissions, clutches, drivelines, differentials, and axles.
• Troubleshoot and repair air brake systems, ABS, suspensions, steering, wheel ends, and tires.
• Diagnose and repair hydraulic systems, pumps, cylinders, PTOs, and dump bodies.
• Troubleshoot 12/24-volt electrical systems, wiring, lighting, charging, and starting systems using schematics and meters.
• Use OEM and aftermarket diagnostic software and scan tools to read fault codes, perform tests, and verify repairs.

Preventive Maintenance and Inspections

• Perform scheduled preventive maintenance services, including oil and filter changes, lubrication, fluid analysis, and component inspections.
• Conduct thorough vehicle inspections and support DOT annual inspection requirements.
• Address driver vehicle inspection report (DVIR) defects promptly and confirm vehicles are safe to return to service.
• Recommend repairs and identify recurring problems to reduce breakdowns and extend equipment life.

Documentation and Compliance

• Complete detailed work orders and daily work sheets documenting labor, parts used, completed repairs, and needed repairs.
• Communicate parts needs to the Garage Manager and help maintain accurate parts and repair records.
• Follow all company policies and applicable federal and state safety and environmental regulations, including proper handling and disposal of fluids and hazardous materials.

Field Service, Safety, and Teamwork

• Work primarily in our garage facility and perform offsite and roadside equipment repairs as needed.
• Follow safe work practices at all times, including lockout/tagout, proper lifting and jacking procedures, and correct use of PPE.
• Keep tools, equipment, work bays, and service vehicles clean, organized, and in good working order.
• Support fellow team members in troubleshooting different types of equipment and determining the best resolution.
• Display a professional appearance and a reliable, responsible, positive, and collaborative attitude.
• Perform other related duties as assigned by the Garage Manager.

QUALIFICATIONS AND SKILLS

Required

• High school diploma or equivalent.
• Five or more years of experience as a diesel mechanic, with a focus on on-road heavy trucks such as tri-axles and tractor-trailers.
• Working knowledge of diesel engines, hydraulics, pumps, transmissions, electrical, and air brake systems.
• Proficiency with diagnostic software, scan tools, and electrical testing equipment.
• Valid driver’s license and an acceptable driving record.
• Ability to read and interpret service manuals, wiring diagrams, and technical documentation.

Preferred

• Class A Commercial Driver’s License (CDL).
• Welding and fabrication experience (MIG, stick, and/or torch).
• Qualified to perform FMCSA/DOT annual vehicle inspections.
• Experience in construction, aggregate, or materials hauling fleets.

Skills and Abilities

• Strong mechanical aptitude and a systematic approach to troubleshooting.
• Detail oriented, with a focus on safety and quality workmanship.
• Ability to manage time, prioritize work, and handle multiple repairs in a fast-paced environment.
• Strong written and verbal communication skills; a problem solver and independent thinker.
• Team oriented, dependable, and willing to share knowledge with other mechanics.

PHYSICAL DEMANDS AND WORK ENVIRONMENT

• Regularly stand, walk, bend, kneel, crawl, climb, and work in awkward positions for extended periods.
• Lift and carry up to 50 lbs. regularly and occasionally more with assistance or lifting equipment.
• Work in a garage and in outdoor field conditions, with exposure to noise, fumes, dust, fluids, and seasonal weather.
• Use of required personal protective equipment, including safety glasses, gloves, and safety-toe boots.
• Availability for overtime, early starts, and occasional weekend or emergency repairs based on operational needs.