In car maintenance, the belt is one of the more important items, and it is also easier to forget. Once the belt is broken, the light will delay the time, and the heavy will damage the vehicle and cause danger.
A car comes with two, a timing belt and an accessory belt. The replacement cycle of the timing belt is almost the same for all cars, about three years or 60 thousand kilometers. At the same time, the expansion wheel and the idler wheel need to be replaced at the same time. Because the life of the belt and the tightening wheel is almost the same, the belt life is to, even if the tightening wheel can be used now, but how long the life is left is unknown. It is also impossible to replace it after 20,000 kilometers, because the cost of changing the belt is very high, which is equivalent to spending two hours, and should be replaced at the same time for safety and money saving.
If the formal belt is not abnormally worn, it is not clear from the appearance whether it needs to be replaced. In addition, the belt is covered by a cover, which is not visible from the outside. Therefore, after the time and the number of kilometers, it can be replaced directly, without checking. Once the belt breaks, it will damage the engine, the valve is bent, and even the connecting rod is bent, and the engine needs to be overhauled and the cost is high.