Cleaning is mainly to clean the dirt outside the car, clean the cab and the inside of the car body, keep the engine and chassis free of dirt, keep the fuel, engine oil, air filter and battery clean, and clean the tire insert. The main contents of the inspection are to check the appearance of each assembly and mechanism of the automobile, check the fastening degree of external connecting bolts of each part, check the technical status of electrical, lighting, signal and instrument equipment, and check the tire pressure and tire damage. The supplement is mainly to check the fuel, lubricating oil, coolant, brake fluid, battery electrolyte and working medium of air conditioning device, add them as needed, and inflate the tires with insufficient air pressure according to regulations. Lubrication is to lubricate regularly with lubricating oil (grease) of the specified brand according to the automobile lubrication chart. All lubricating oil nozzles and ventilation plugs must be matched and kept smooth. Fastening refers to fastening the exposed parts of automobile assemblies and mechanisms according to regulations, and replacing the lost or damaged fasteners. Adjustment refers to the necessary adjustment of automobile assembly, mechanism and electrical equipment according to regulations to make them meet the technical requirements. Replacement refers to the replacement of fuel filter, oil filter and air filter, lubricating oil, tire transposition and tire replacement as required or specified, as well as the replacement of damaged electrical components and wires.
Maintenance work is a combination of maintenance processes in a certain way and order. Due to different maintenance methods, the maintenance process is also different. There are two maintenance methods: positioning method and flow method. Positioning operation method refers to the maintenance of the car at one station, and the workers who perform different processes take turns to operate the car at the station. Flow shop method is to arrange different maintenance processes on both sides of the production line in a certain order, and the car flows along the production line and stops at the corresponding station according to the working time of each process.