Assists with and/or performs appropriate repair, removal, replacement, rebuilding, or maintenance work on vehicle/equipment systems and components; removes or replaces brakes, brake pads, wheels, steering components, shocks, transmissions, cylinder heads, valve trains, differentials, suspension springs, starters, alternators, water pumps, thermostats, radiators, flywheels, fuel injectors, and other components; turns, replaces, or resurfaces rotors/drums; replaces rings, bearings, and universal joints; repairs/replaces clutches; rebuilds generators and carburetors; relines brakes; removes or replaces engines, engine parts, and engine gaskets; checks engine timing and performance; grinds valves; rebuilds wheel cylinders; replaces disk calipers; repairs truck frame and dump beds; installs, removes, repairs or replaces doors, lifts, seats, radios, lights, windows, mirrors, or emergency sirens. Inspects, tests, and diagnoses problems involving various systems of vehicles or equipment, such as gasoline/diesel engines, ignition systems, computerized engine controls, electronic fuel injection systems, transmissions, differentials, steering systems, electrical systems, suspension systems, hydraulic systems, brake systems, pneumatic systems, drive train systems, engine cooling systems, fuel and air induction systems, charging systems, starting systems, exhaust systems, emission systems, inflatable restraint systems, heating/air conditioning systems, windows, lighting systems, or horns.