Diesel & Heavy Equipment Maintenance Technician - II or III

Diesel & Heavy Equipment Maintenance Technician I - II or III

Performs fleet operations and advanced journeyman-level mechanical duties for the Solid Waste Department-including diagnostics, welding, fabrication, maintenance, repair, and overhaul of fleet vehicles and equipment-while promoting a safe work environment and providing technical leadership and mentoring to maintenance personnel.

• Performs preventive maintenance services including lubrication, fluid changes, filter replacement, inspections, and routine servicing.
• Assists with repairs on refuse trucks, trailers, heavy equipment, and fleet vehicles.
• Performs tire service, battery replacement, brake inspections, and minor repairs.
• Assists with welding, fabrication, and equipment modifications under supervision.
• Learns diagnostic procedures and operation of maintenance equipment.
• Maintains shop cleanliness and proper housekeeping standards.
• Completes work orders and maintenance documentation accurately.
• Assists with emergency repairs and field service activities as directed.
• Complies with all county safety policies, lockout/tagout procedures, PPE requirements, and OSHA regulations.
• Participates in safety meetings and required training programs.
• High school diploma or GED required.
• Utah Class A Commercial Driver License (CDL) with in 12 months of employment.
• Technical training in diesel mechanics, automotive technology, or a related field preferred.
• One (1) year of mechanical maintenance experience preferred.
• Equivalent combinations of education and experience may be considered.

• Diagnoses and repairs diesel engines, brake systems, steering, suspension, hydraulic systems, and electrical systems.
• Utilizes diagnostic software, scan tools, and service manuals to identify mechanical and electrical issues.
• Performs component replacement and repair of drivetrain, hydraulic, and electrical systems.
• Conducts welding and fabrication projects to support fleet operations.
• Performs field service repairs and responds to emergency breakdowns.
• Maintains repair records, work orders, and maintenance documentation.
• Assists in training and mentoring Maintenance Technician I employees.
• Ensure compliance with safety regulations and maintenance standards.
• Working knowledge of diesel engines, hydraulic systems, electrical systems, and fleet maintenance practices.
• Ability to diagnose and repair moderate to complex mechanical failures.
• Ability to read wiring diagrams, hydraulic schematics, and technical manuals.
• Skilled in welding, fabrication, and equipment repair.
• Strong communication and customer service skills.
• Ability to work independently with limited supervision.
• Valid Utah Class A Commercial Driver License (CDL)
• Two (2) years of technical coursework in diesel mechanics, heavy equipment technology, or related field preferred.
• Four (4) years of experience in diesel mechanics, heavy equipment maintenance, hydraulic systems, or fleet operations.
• Equivalent combinations of education and experience may be considered.

• Performs advanced diagnostics and repairs on semi-trucks, trailers, refuse collection equipment, heavy equipment, and fleet vehicles.
• Conducts troubleshooting of diesel engines, hydraulic systems, electrical systems, CAN bus networks, and ECM-controlled systems.
• Performs engine overhauls, rebuilds, and major component repairs.
• Uses advanced diagnostic software, OEM service information, and scan tools.
• Performs welding and fabrication using ARC, MIG, and oxy-acetylene equipment.
• Provides technical guidance and mentorship to technicians and apprentices.
• Supports field repairs and emergency fleet response activities.
• Ensures compliance with county, state, federal, and safety regulations.
• Advanced knowledge of diesel engines, hydraulic systems, electrical systems, welding, and fabrication.
• Expert understanding of CAN bus communications, ECM diagnostics, and electronic troubleshooting.
• Ability to interpret wiring diagrams, hydraulic schematics, and technical manuals.
• Strong leadership, communication, and customer service skills.
• Ability to independently diagnose and repair complex equipment failures.
• Six (6) years of experience in gas and diesel mechanics, heavy equipment maintenance, hydraulic systems, or fleet operations.
• Equivalent combinations of education and experience may be considered.

Preferred Certifications

• ASE T2 - Diesel Engines
• ASE T4 - Brakes
• ASE T5 - Suspension and Steering
• ASE T8 - Preventive Maintenance Inspection
• Hydraulic and electrical diagnostic training
• ASE Master Medium/Heavy Truck Technician Certification

Special Requirements

• Must provide and maintain a basic set of mechanic tools.
• Must adhere to all county safety policies and training requirements.

Work Environment

• 80% shop-based work; 20% field-based.
• Frequent lifting up to 75 pounds.
• Exposure to machinery, noise, vibration, dust, grease, and outdoor weather conditions.
• Required use of personal protective equipment (PPE).

Tooele County is an…