【正文】 ntenance, secondary maintenance, Regular maintenance purposes: A car is by thousands of different parts. With the use of functional ponents (including the lubricating oil, abrasion performance because of aging, corrosion, and other factors and gradually reduced. In normal operation, the vehicle under changing gradually occur in many parts. Because no car use identical, so unpredictable each parts have the same wear and aging. Therefore, the factory has certain provisions of the examination cycle, for those who can be expected to over time or use can change the zero adjustment and replacement ponents, this is the regular maintenance. Its purpose is to restore to the best performance of vehicle, prevent bee major problems, ensure the safety of vehicles, and better efficiency and long service life. 2) the maintenance regularly: period maintenance and seasonal maintenance. Maintenance content Car maintenance and used car maintenance says car beauty. The main purpose is to remove the car and car body of in vitro and oxidation and corrosion protection, try to highlight the car beauty. It mainly includes: the car paint maintenance, cushion, bumper car carpet maintains, maintenance, maintenance, instrument platform skirt, plastic plating processing maintenance warranty maintenance, tires, wheel hub, maintenance, maintain the windscreen, engine appearance maintenance maintenance In order to make the car body maintenance is youth, car maintenance objective is to hundreds of thousands of kilometers of vehicle without overhaul, guarantee the car in the best technical status. It mainly includes: the lubrication system, fuel system, cooling system, braking system, carburetor (nozzles) maintenance etc. Auto maintenance is a technical higher plex work on the driver himself to finish, need to steam to maintenance enterprises. Now in China as part of vehicle maintenance and embrace traditional enterprise die maintenance concept, maintenance equipment and tools, and maintenance methods of outdated or old, not adapt to the needs of the development of modern. In addition, there are individual maintenance service quality of enterprises as exorbitant profits , for the rundown , in order to maintain the new, old filling with bad, ready for a fee, maintenance fee, wild eculatio. So when the driver remind car maintenance must choose technical force is abundant, the quality of service, reliable and good reputation, and do not repair the trouble, money and not car maintenance, lest penny wise and pound foolish. Maintenance and repair Auto maintenance and repair are closely related. Repair, maintenance in maintenance in repair. In vehicle maintenance process may find some place or malfunction or damaged parts will be available, so the precursors of its timing, maintenance and repair. And in the process, to repair the damaged parts also have something to maintain, this is a very natural thing. Therefore, auto maintenance and repair of the dialectical relationship is. In the daily activity, must handle the relationship between the two, adhere to the maintenance, overe light repaired the generation , the unhealthy tendencies. Three repair FenYang seven is the truth. According to the present situation of the industry, automobile maintenance of science will auto maintenance system is divided into six parts, and on the following six special system maintenance. One of the lubrication system, deepen the maintenance Lubrication system of automobile engine is the main function of each ponent of the lubrication, effectively prevent excessive wear. Under normal circumstances, 5000km driving cars 10000km when it needs cleaning and maintenance, too, in engine noise, high speed when water also needs cleaning and maintenance. Cleaning of oil and other internal engine oil deposition, avoid the high temperature oxidation, reduce engine ponents thickening of the wear and prolong engine life, improve engine power. Second, fuel system, cleaning and maintenance (. cleaning spray nozzle, valve carbon) Normally, each 10000km driving car 15000km when cleaning and maintenance, or when you discover the engine, hysteresis and accelerate surge, smoke wh3en, weakness, cleaning and maintenance fee oil. Remove the internal system, prevent carbon deposition colloid and corrosion of harmful, avoid and stop water leakage, seal and thoroughly change the old cooling fluid. Third, the cooling system of cleaning and maintenance Normally, car in winter and summer seasons, cleaning, maintenance time should be the normal running of every six months to 8 months, cleaning and maintenance in high temperature or KaiGuo, water, when cleaning and maintenance. To remove traces of engine overheat, prevent the scale and corrosion of harmful, avoid and stop water leakage, seal and thoroughly change the old cooling fluid. Four, the transmission of cleaning and maintenance (automatic transmission wave box) Normally, each 20200km driving car 25000km when cleaning and maintenance, or high temperature, transmission skid, shift, cleaning and maintenance system when leakage. Remove harmful sludge and film sediments, restore gasket and orings elasticity, make smooth shift gearbox, improving power output, pletely replace the old automatic transmission. Five, power steering system of the cleaning and maintenance 40000km driving cars 45000km to maintain a clean, or difficult to replace power steering system, leakage,