Butter is a very common operation in daily maintenance. The scientific name of butter is butter, which is a lubricating medium used between automobile parts. Not the kind of butter we usually eat.

First, the maintenance of automobile leaf springs

Automobile leaf spring is an important part to ensure the comfort and safety of automobile driving. Leaf spring is composed of several steel plates with different lengths, which can effectively absorb and cushion the wheels, so the maintenance of leaf spring is very important. However, when installing leaf springs, some maintenance personnel spread butter on the steel plates to prevent the wear between them. But I don't know that this will greatly reduce the service life of leaf springs, because butter is easy to squeeze out from between steel plates, and butter itself is easy to attach dust and impurities, which will lead to premature corrosion of steel plates and seriously reduce the service life of steel plates.

Second, the maintenance of hub bearing

Hub bearing is an important part that carries and guides the rotation of hub. The maintenance of hub bearing plays an inestimable role in the braking performance and driving safety of automobiles. However, some car owners often fill the hub bearing and its cavity with grease for better lubrication effect, which will have the opposite effect. Because there is too much grease, the bearing may generate a lot of heat due to excessive rolling resistance, which will make the grease fail prematurely and cause unnecessary waste. The correct lubricating grease filling method should be bearing cavity filling and hub cavity filling 30%-50%.

Third, the maintenance of automobile cylinders

Automobile cylinders require extremely strict sealing. When installing cylinders, some people like to coat a layer of butter on the cylinder gasket, thinking that this can increase their sealing performance. In fact, this is not only useless, but also harmful. As we all know, the cylinder will produce high temperature and high pressure gas in the working process. When the cylinder is working, some butter will flow into the cylinder for combustion, and some will form carbon deposit and remain in the cylinder. Under the action of high temperature and high pressure, it is easy to puncture or burn through the cylinder gasket, resulting in engine air leakage. Therefore, remember to apply butter when installing the cylinder, otherwise it will cause very serious consequences.