A 'Heavy Duty Mechanic Repair Person' commonly performs maintenance and repair on various kinds and pieces of heavy equipment. An example includes, but is not limited to, greasing and oiling, minor adjustments, repair of engine braking systems and trouble shooting, standard transmissions, instrument panels and automatic machine control applications and installations, as well as calibrations.

The term of Apprenticeship for a 'Heavy Duty Mechanic Repair Person' is 8,000 hours of on-the-job work experience. The official DOT (Department of Transportation) number for this occupation is 625.281-010. As an Operating Engineer Mechanic Apprentice the student would receive the instruction and real-life experience that is necessary to develop a practical and skilled journey person who is well versed in the theory and practice of his or her particular trade classification. This is done by using the following appropriate schedule of work experience as a guide:

The apprentice 'Heavy Duty Mechanic Repair Person' will also perform other duties that are commonly related to his or her classification.