A student successfully completing this program will be able to do the following:   Maintain a safe work environment.  Perform all record keeping functions. Conduct preventive maintenance operations.  Maintain proper communications with customers and colleagues. Service air and exhaust systems.  Perform necessary welding operations. Service fuel systems.  Service and repair diesel cylinder heads. Perform valve and injector adjustments.  Maintain electrical systems. Maintain electronic control systems.  Maintain air brake systems. Maintain suspension and steering systems.  Maintain hydraulic systems. Perform engine rebuilding operations.  Maintain drive train systems. Maintain air conditioning/transport refrigeration systems.