Automobile Maintenance Method-Taboo of Automobile Maintenance

Car maintenance taboo 1. Avoid mechanical injury. In fact, it has something to do with all aspects of car maintenance. At the beginning of maintenance operation, work signs should be set in obvious places to avoid injuries caused by other people's wrong operations. When starting a car, pay attention to the gear of the transmission to prevent the car from misoperation and personal injury.

When working under the hood, others should be allowed to leave the cab to prevent the engine from suddenly turning or others operating the mechanism, resulting in accidental injuries. If you need to work under the car, you should set up obvious signs and cover the car with wood. When a car is supported by a jack, the jack should be placed stably. Driving tools (driving bench) should be prepared before driving, and fragile items such as bricks are prohibited. Do not test screw holes, lock holes, etc. when installing components. Avoid breaking your fingers with your hands. Don't work under the car when testing the engine.

2. Don't wash the inside of the car body with water. It is best not to wash directly with water. Because the bottom surface of the floor mat in the cab is not "Ma Pingchuan", there are many grooves and through holes under the floor mat in the cab due to structural requirements. After washing with water, it is either deposited in the groove and difficult to dry, or flows from the through hole to the gearbox and other parts to cause corrosion. The correct way is to wipe it with a wet rag.

Don't burn the engine that just stopped. Because of the temperature of various parts of the engine (water tank, exhaust pipe, power steering box and spark plug, etc.). ) is relatively high, you must be careful when touching it to prevent burns. If the engine temperature is high, do not remove the water tank cover or loosen the drain switch to avoid burns.

4. Avoid damaging the automobile brake fluid, which can quickly dissolve the paint film. Brake fluid is harmful to eyes. If it spills into eyes, it must be washed with clear water immediately.

5. Do not pay attention to the protection of rotating parts and the road test of the car. When the engine is running, be careful that your hands, clothes and tools must leave the rotating fan and fan drive belt (it is best to take off items such as rings, watches and ties). During the test run, the conditions of all parts of the car should ensure safe parking and effective steering. Road test vehicles must have obvious test marks. During the test run, personnel must drive safely and on the special test run track.

6. Do not pay attention to the cleanliness of the workplace. When closing the engine cover or other assembly cover, check whether tools, rags and removed parts are forgotten, and then close them. In fact, I have seen such an example. While the driver was repairing the car, he died of negligence. Perhaps this probability is relatively small, but when the hot summer comes, the phenomenon of engine overheating will be very obvious, and scalding is the most important thing to avoid. After all, it is impossible for ordinary car owners to go under the car for maintenance.

Common sense of automobile maintenance: Do not oil the wheel bolts and nuts.

In order to prevent the bolts and nuts on the wheels from rusting, a few private car owners creatively apply lubricating oil on the bolts and nuts, but this practice is not only wrong, but also brings certain hidden dangers to driving safety. After the bolts and nuts are tightened, they are self-locking. However, after being coated with lubricating oil, the self-locking coefficient between them becomes smaller and the self-locking performance decreases. When the car is driving at high speed, the bolts and nuts are easy to loosen or even fall off, thus causing traffic accidents.

Don't flush the interior of the car body with water.

Private car owners often wash their bodies with water and wipe them with rags, which is not correct. It is best not to flush the car directly with water. Because the bottom surface of the floor mat in the cab is not "Ma Pingchuan", there are many grooves and through holes under the floor mat in the cab due to structural requirements. After washing with water, it will either be deposited in the groove and difficult to dry, or it will flow from the through hole to the gearbox and other parts to cause corrosion. . The correct way is to wipe with a wet rag, but avoid water accumulation.

Do not mix different brands of coolant.

Everyone knows that the engine coolant is insufficient and needs to be added in time, but it is wrong to put different brands of coolant together for heating. Because the chemical properties of different brands of coolant may vary greatly, such as an effective preservative for ferrous metals, but it often has a corrosive effect on aluminum products; But preservatives suitable for aluminum alloys are harmful to ferroalloys. Because different brands of coolant use different preservatives, they cannot be mixed.

There is no need to step on the accelerator when the EFI automobile engine is started.

Don't step on the accelerator when the EFI car starts. This starting mode is not suitable for EFI vehicles. The engine equipped with electronic fuel injection device is different from the ordinary carburetor engine. Its fuel injection control device can automatically adjust the fuel supply according to the temperature and working condition of the engine, so that the engine can start smoothly, that is, when the cold car starts, the fuel injection control device can automatically increase the fuel supply. Therefore, it is not necessary to step on the accelerator when starting the EFI automobile engine, otherwise the engine will not start well.