A diesel mechanic repairs and maintains diesel engines used to power machines, such as buses, ships, trucks, railroad trains, electric generators, and construction machinery. Unskilled beginners are usually assigned tasks such as cleaning parts, fueling and lubricating vehicles, and driving vehicles into and out of the shop. Many community colleges and trade and vocational schools offer programs in diesel repair.
Programs vary in the degree of hands-on training they provide on equipment.
Nearly all employers require completion of high school. Many employers provide lockers and shower facilities. Employment of diesel mechanics and service technicians is expected to grow as fast as the average, as freight transportation by truck increases. Additional trucks will be needed for both local and intercity hauling, due to increased production of goods.