Education: Secondary (high) school graduation certificate. Work site environment: Noisy. Tasks: Troubleshoot and inspect equipment to detect faults and malfunctions. Diagnose faults or malfunctions using computerized and other testing equipment to determine extent of repair required. Adjust equipment and repair or replace defective parts. Keep maintenance reports and documentation. Test repaired equipment for proper performance and to ensure that work meets manufacturers' specifications. Clean, lubricate and perform other maintenance work. Perform repair work on heavy trucks. Verify and repair emission control systems. Diesel engine repair specialization: Cooling system. Air conditioning system. Lubrication system. Mechanical maintenance and repair specialization: Mechanical transmissions. Hydraulic transmissions. Work conditions and physical capabilities: Physically demanding. Bending, crouching, kneeling. Standing for extended periods. Personal suitability: Flexibility. Team player. Organized. Experience: 1 year to less than 2 years.