Most supervisors and managers are experienced mechanics who also assist in diagnosing problems and maintaining quality standards. Mechanics may work as a team or be assisted by an apprentice or helper, when doing heavy work like removing engines and transmissions. Working Conditions Diesel mechanics usually work indoors, although they occasionally make repairs to vehicles on the road. Mechanics handle greasy and dirty parts and may stand or lie in awkward positions to repair vehicles and equipment. They usually work in well lighted, heated, and ventilated areas, however, some shops are drafty and noisy.
Many employers provide locker rooms and shower facilities.
Employment Diesel mechanics held about 266,000 jobs in 1996. Nearly 25 percent serviced trucks and other diesel-powered equipment for customers of vehicle and equipment dealers, leasing companies, or independent automotive repair shops. Over 20 percent worked for local and long-distance trucking companies, and nearly 10 percent maintained the buses and trucks of buslines, public transit companies, school systems, or Federal, State, and local government. The remaining mechanics maintained the fleets of trucks and other equipment for manufacturing, construction, or other companies. A relatively small number were self-employed.