Basic Function Under moderate supervision, performs a variety of skilled and semi-skilled repairs, installation and maintenance procedures relating to mechanical and electrical components and systems of Metro?s Bus & Rail facilities and Gateway Headquarters building. Example Of Duties   Bus Performs preventive and restorative maintenance of shop and bus servicing equipment and electrical systems, including bus washer systems, fueling stations, and roll-up garage doors using basic tools of mechanical trade Troubleshoots and maintains systems with programmable logic and solid state controllers, including automated storage and retrieval systems, robotic paintings equipment, and heavy equipment hoists