Education: Secondary (high) school graduation certificate. Tasks: Adjust, repair or replace parts and components of commercial transport truck systems. Inspect mechanical units to locate faults and malfunctions. Inspect motor in operation. Adjust, repair or replace parts and components of truck-trailer systems. Perform scheduled maintenance service. Test and adjust units to specifications. Complete reports to record problems and work performed. Provide customer service. Experience: 2 years to less than 3 years. Green job: Involves duties and responsibilities that lead to positive environmental outcomes.