The improvement of economy has promoted the continuous improvement of our living standard. Automobile is one of the indispensable means of transportation in our life. If the vehicle is used for a long time, it is inevitable that it will be repaired. Today, let's talk about the basic knowledge of automobile maintenance for you by the good editor of Jinan Audi maintenance company?
1. Afraid of "dirty"
If the fuel filter, oil filter, air filter, hydraulic oil filter and all kinds of filters and other parts are too dirty, the filtering effect will become worse, too many impurities will enter into the oil cylinder, which will aggravate the wear of parts and increase the possibility of failure; if they are seriously blocked, the vehicle will not work normally. The radiator of water tank, cylinder block and cylinder head of air-cooled engine, radiator of cooler and other parts are too dirty, which will lead to poor heat dissipation and high temperature. Therefore, for this kind of "dirty" parts must be cleaned and maintained in time.
2. Afraid of "heat"
If the temperature of engine piston is too high, it is easy to cause overheating and melting, resulting in cylinder holding; if the rubber seals, V-belts and tires are too hot, it is easy to premature aging, performance degradation and service life shortening; if the coils of starter, generator, regulator and other electrical equipment are too hot, it is easy to burn and scrap; vehicle bearings should be kept at an appropriate temperature, such as overheating, the lubricating oil will soon deteriorate and eventually be damaged The bearing was burnt out and the vehicle was damaged.
3. Afraid of "string"
All kinds of matching parts in diesel engine fuel system, master-slave gear in drive axle main reducer, hydraulic control valve block and valve stem, valve core and valve sleeve in full hydraulic steering gear, etc. These matching parts are made by special processing and grinding in pairs during manufacturing. The matching is very precise. They are always used in pairs during the service life and must not be interchanged. Some matching parts, such as piston and cylinder liner, bearing bush and journal, valve and valve seat, connecting rod big end bush cover and rod body, have relatively good matching after a period of running in. During maintenance, attention should be paid to assembly in pairs instead of "passing by" each other.
4. Fear of "counter attack"
The engine cylinder gasket can not be installed reversely, otherwise it will lead to premature ablation damage of cylinder gasket; some special shape piston rings can not be installed reversely, so they should be assembled according to the requirements of different models; the installation of engine fan blades also has direction requirements, the fan is generally divided into exhaust and suction, which can not be reversed, otherwise it will lead to poor engine heat dissipation and high temperature For tires with directional pattern, such as herringbone pattern tires, the herringbone tip should point to the rear after installation to ensure greater driving force. For the two tires installed in parallel, different models have different requirements, so it is not allowed to install them at will.
5. Fear of "lack"
When repairing vehicles, some small parts may be omitted due to negligence. Some people even think that it doesn't matter whether they are installed or not, which is very dangerous and harmful. Engine valve locks should be installed in pairs. If missing or missing, the valve will be out of control and the piston will be damaged. Once missing, the split pin, locking screw, safety plate or spring pad installed on engine connecting rod bolt, flywheel bolt, transmission shaft bolt and other locking devices may cause serious failure in use Once the oil nozzle used to lubricate the gear is missing, it will lead to serious oil leakage and low engine oil pressure; if the water tank cover, oil port cover and oil tank cover are lost, it will cause sand, dust, etc. to invade and aggravate the wear of parts.