Know a little knowledge about car repair

Mr. Li, the owner of Lefengche, said that he once went to a store to wash his car. The staff gathered around his car and said for a whileBrake padsIt’s too thin to be replacedTires.Later, during maintenance at the 4S shop, the maintenance staff checked and told him that theseAccessoriesIt all works.

In contrast, Mr. Gu, the owner of Passat, is not so lucky.Recently, he went to a repair shop to do maintenance and replaced it after the maintenance worker persuaded himBrakeThe film cost more than 900 yuan, and then I told a friend that I learned that the brake pads of a car like him that only ran for more than 20,000 kilometers did not need to be replaced at all.

These accessories are the easiest to be fooled by merchants

A repair shop has 18 yearsCar repairExperienced senior technician Jiang Decai said that there are indeed some irregularities at presentcarThe repair shop allows car owners who don’t understand the car to replace it in advanceAuto partsPieces, profit from it. He said that as long as the car owner has some common sense, many traps can be prevented.

Scratching is not necessarilyWiper'S fault

In a car wash or repair shop, when the staff checked the wiper and said, "This wiper can't be cleaned, right?" Many car owners immediately thought of the blurry front windshield in rainy weather, so a pair of more than 200 yuan was boneless. The wiper is installed on the car in this way.

Does the wiper work efficiency decrease and need to be replaced immediately? Not exactly. Jiang Decai said that excluding bad weather conditions, the wiper can be used for two full years under normal use. Sometimes, it is not the wiper's fault that the scraping is not clean, but the glass surface is stuck with dirt (such as oil stains that often run at high speed). After cleaning the glass, the efficiency of the wiper can also be improved.

The service life of brake pads is usually more than 40,000 kilometers

Under normal circumstances, there are several ways to determine whether the brake pads need to be replaced: one is to directly observe the thickness of the brake pads with the naked eye. When the brake pads are worn to 2-3 mm, it is necessary to replace them. The second is based on the calculation of mileage. Under urban traffic conditions, ordinary vehicles need to change the brake pads for driving more than 40,000 kilometers, and the mileage for frequent long-distance can be longer. The third is that car owners can feel the brakes. When the brakes are weak, and there are often abnormal noises of iron and iron friction, it is necessary to replace them. In addition, car owners do not need to rush to replace the brake pads.

The damage is less than 6mmTiresRepairable

When the car is driving on the road, it will inevitably be pierced by a nail one day. If the damage is on the front and the diameter is less than 6mm, it can be used after being repaired by a professional repairer. If there is damage on the side, it must be replaced.

If there is no special reason, a normal tire life can usually run at least 50,000 to 60,000 kilometers. So how to judge whether to change? The tire must be replaced when it is worn to the depth of only 1.6 mm in the tread groove. At this time, the wear marking strip that runs through the tread will be exposed, and the tire can no longer be used, otherwise it will slip or drift during driving.