Its purpose is to maintain, troubleshoot, overhaul, repair, modify, and inspect heavy mobile equipment, various support equipment, and special purpose vehicles such as; fuel dispensing trucks, refueling equipment, crash/structural firefighting equipment and pump trucks, forklifts, materiel handling, aircraft cargo loaders, aircraft and equipment tow tractors, large runway snow removal vehicles, aircraft de-icing equipment, sweepers, bulldozers, mobile cranes, road graders, heavy construction and earth moving vehicles, backhoes, front end loaders, excavators, trenchers, and tactical/armored protected vehicles. Inspects repairs, overhauls and tests major systems including gasoline, diesel, electric powered hybrid, multi-fuel, turbine, and other types of internal combustion engines, which may be turbo-charged or blower assisted, automatic or manual transmissions, including those with power take offs, cross-drive transmissions, hydraulic, electric, pneumatic systems and controls, fluid pumping systems, turrets, winches and four wheel steering systems.