They use power tools such as pneumatic wrenches to remove bolts quickly, machine tools like lathes and grinding machines to rebuild brakes, welding and flame-cutting equipment to remove and repair exhaust systems, and jacks and hoists to lift and move large parts. Heavy equipment mechanics also use a variety of computerized testing equipment to pinpoint and analyze malfunctions in electrical systems and engines. For example, they use tachometers and dynamometers to locate engine malfunctions. When working on electrical systems, they use ohmmeters, ammeters, and voltmeters. Working Conditions Mobil heavy equipment mechanics usually work indoors, although many make repairs at the work site.
Mechanics often lift heavy parts and tools.
Minor cuts, burns, and bruises are common, but serious accidents can be avoided when the shop is kept clean and orderly and when safety practices observed. While they usually work in well lighted, heated, and ventilated areas, some shops are drafty and noisy. Many employers also provide uniforms, locker rooms and shower facilities. When mobile heavy equipment breaks down at a construction site, it may be too difficult or expensive to bring it into a repair shop, so a field service mechanic is sent to the job site to make repairs. Field service mechanics work outdoors and spend much of their time away from the shop.