Diesel Motor Mechanic

The Diesel Motor Mechanic is responsible for the inspection, diagnosis, maintenance, and repair of diesel-powered vehicles and equipment, ensuring assets are maintained to a safe, compliant, and operationally reliable standard. The role underpins workshop productivity, asset availability, and customer satisfaction while ensuring compliance with New Zealand regulatory, safety, and quality frameworks.

Key Responsibilities

1. Inspect, service, diagnose, and repair diesel engines and associated systems including fuel injection, turbocharging, air intake, cooling, lubrication, and exhaust systems.
2. Diagnose faults using advanced diagnostic tools, electronic systems, and manufacturer-specific software.
3. Dismantle, overhaul, and reassemble diesel engines and major components in accordance with manufacturer specifications.
4. Carry out repairs on diesel-powered light commercial vehicles, heavy vehicles, plant, or machinery as applicable to the workshop scope.

1. Service and repair braking systems (including air brakes), steering systems, suspension, driveline, and transmission components.
2. Diagnose and rectify faults in electrical and electronic control systems, including sensors, actuators, ECUs, and wiring looms.
3. Perform emission-related inspections and repairs to ensure compliance with environmental and regulatory standards.

1. Complete job cards, inspection reports, service records, estimates, and invoices accurately using workshop management systems.
2. Ensure efficient job sequencing to meet turnaround times and productivity targets.
3. Maintain tools, equipment, and diagnostic devices in a serviceable and calibrated condition.

1. Ensure all work complies with NZTA / Waka Kotahi requirements, manufacturer standards, and industry best practice.
2. Comply with the Health and Safety at Work Act, including hazard identification, risk mitigation, and safe work practices.
3. Identify non-conformances, quality issues, or safety risks and escalate appropriately.
4. Contribute to continuous improvement initiatives, including workshop efficiency, safety culture, and quality outcomes.

1. Communicate technical findings and repair recommendations clearly to customers and internal stakeholders.
2. Liaise with parts suppliers and technical support teams to ensure correct parts selection and technical resolution.
3. Provide mentoring or technical guidance to apprentices or junior technicians as required.

1. Strong diagnostic capability across diesel mechanical and electronic systems.
2. Sound understanding of diesel engine management systems and emissions technologies.
3. High level of mechanical precision, problem-solving ability, and attention to detail.
4. Effective time management and ability to work under operational pressure.
5. Professional communication and customer service orientation.

1. Proven experience of minimum 3 or more years as a Diesel Motor Mechanic.
2. Experience working on diesel engines in light commercial and heavy vehicle.
3. Full, clean NZ Driver License (desirable but not mandatory).