Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and surface mining.
Install and repair industrial and commercial refrigerating systems.
Install, dismantle, or move machinery and heavy equipment according to layout plans, blueprints, or other drawings.
Test, adjust, or repair biomedical or electromedical equipment.