This may include repair or replacement of major components such as hydraulic cylinders, gears, chains, sprockets, pneumatic cylinders, hoses, brakes, clutches, wheels, bearings, gearboxes, springs, or a wide variety of other mechanical devices. Areas of responsibility include (but are not limited to) maintenance of: gearboxes, chains, sprockets, hydraulic systems, pneumatic systems, wire rope, hoists, brakes, pumps, and large bearings.