Education: Secondary (high) school graduation certificate. Tasks: Adjust, repair or replace parts and components of commercial transport truck systems. Confirm findings with supervisor to determine whether to repair or replace unit. Discuss work with supervisor. Inspect and test mechanical units to locate faults and malfunctions. Adjust, repair or replace parts and components of truck-trailer systems. Test and adjust units to specifications. Complete reports to record problems and work performed. Experience: 2 years to less than 3 years.