Education: Secondary (high) school graduation certificate. Tasks: Adjust, repair or replace parts and components of commercial transport truck systems. Inspect and test mechanical units to locate faults and malfunctions. Adjust, repair or replace parts and components of truck-trailer systems. Test and adjust repaired systems to manufacturer's specifications. Perform scheduled maintenance service. Test and adjust units to specifications. Complete reports to record problems and work performed. Experience: 2 years to less than 3 years.