They disassemble, clean, replace defective parts, repair, reassemble and maintain registers. Heavy-duty bus mechanics inspect, repair and maintain diesel and liquefied natural gas buses. They maintain and repair electrical systems, air systems, heating and cooling systems, brake systems, suspensions, steering systems, wheelchair lifts, engines and transmissions. They install special functional and structural parts in devices. Apprentices must pass the Oregon State Electrical Board's Limited Maintenance Electrician license at the completion of the program.
Signal technicians inspect, test and repair electrical gate crossings, signals and signal equipment.
Most of the positions work inside the shop, although the mechanics may do some outside work and the signal technicians work primarily outside. Many work with or around electricity and heavy equipment. The working conditions may be greasy, dirty and dusty and exposure to solvents and exhaust is common. The work is often done in awkward and cramped positions. Wages Beginning apprentices start at between 65 to 73 percent of the journey-level wage.