In some large shops, mechanics specialize in one or two types of work. For example, a shop may have mechanics who specialize in major engine repair, transmission work, electrical systems, or suspension or brake systems. Diesel maintenance is becoming more complex, as electronic components increasingly are used to control engine operation. In modern shops, diesel mechanics use handheld computers to diagnose problems and adjust engine functions. Diesel mechanics also use a variety of computerized testing equipment to pinpoint and analyze malfunctions in electrical systems and engines.
Mechanics generally receive their assignments from shop supervisors or service managers.
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.