For some cars, the timing belt plays a big role in the normal operation of the vehicle. It is an important part of the engine intake system, and the belt and crankshaft work together to ensure accurate intake and exhaust time of the system. He can drive the engine's intake system, opening and closing the engine's intake and exhaust valves at the right time.
Some cars have the function of driving a pump in synchrony. For example, Polly, Audi, etc. Because the timing belt has a great effect on the car, the timing belt cannot jump teeth. If a tooth skip occurs, the state of the car's engine will be problematic, the speed will become unstable, and the car will not catch fire. As soon as the timing belt breaks, a more serious problem occurs and the engine stops directly. In addition, depending on the multi-valve engine, the phenomenon of a live plug jacking valve may occur, or the engine as a whole may be damaged. In this case, not only the timing belt is replaced, but also the engine needs to be overhauled.
Since the belt is a rubber product, after the engine has reached a certain working time, the 4s shop usually requires regular replacement of the timing belt and the accessories of the timing belt. Otherwise, if there is a problem with the components around the timing belt, such as the deterioration of the components, the vehicle will fail. The timing belt is a safe cycle with about two years to replace. Or replace the car when it reaches 60,000 to 80,000 kilometers. The replacement time and kilometers are specifically recorded in the vehicle maintenance manual equipped with general vehicles, so please refer to them as a standard reference. Owners who have time are requested to check and maintain it regularly. In addition, when replacing the timing belt, the tensioner and bridge wheel of the synchronous belt must also be replaced.
Due to the long use of the tensioning wheel of the belt, the tensioning wheel is insufficient, and the belt will make an abnormal sound. Problems can occur over time. The timing chain has great advantages over the belt, and its appearance greatly compensates for the shortcomings of the timing belt. The material of the timing belt and the timing belt is different, the belt uses rubber material, but the chain uses a metal material, which is strong and not easy to break, so the life is also longer than the timing belt, not only the noise is slightly larger than the belt, but also the metal system itself
However, if the chain is strong, is it okay not to replace it? The answer, of course, is no. If there is no problem, the timing chain does not need to be replaced regularly like an abnormal sound or other fault, but even if an abnormal sound or failure occurs, it needs to be replaced. One more thing to note. The timing chain cannot be broken, but it will be elongated. After elongation, if it is extended like a bicycle chain, the vehicle is prone to problems.
Usually, we will find that the bicycle chain is loose after a long time of riding ourselves, but in fact, the weight of the bicycle itself and the weight of the load are very small, as the name suggests, the chain time will be extended after the time. The thrusters in the engine have a compensatory effect. It can effectively extend the service time of the chain. After the chain is extended, the tensioner rotates outward to ensure that there are no problems with the chain, but this is also limited. It is usually possible to compensate for about 3 centimeters, but if it exceeds 3 centimeters, the tensioner will not be more tense during this period. Timing chains are usually about 1 meter long.
After the normal exceeds 3 cm, the supercharger cannot compensate, and loosening will occur, such as making abnormal noises, so it is best to replace it. Please do not cause more serious problems. Otherwise, a thruster failure occurs. In that case, there is a risk of teeth jumping. After jumping teeth once, the engine crashed. If this happens, the overhead valve can damage the engine. Repair the entire engine. In general, different cars vary greatly in the timing of time when the timing chain can be used normally.
Some cars are fine if they don't change, but some need 80,000 kilometers to be replaced. Otherwise, the car will not work. Although it also depends on the use of the car, but usually when driving like to frequently pull heavy objects, speeding, although often used, but if not frequent maintenance, life may be shortened. Generally speaking, most cars can use 150,000 kilometers to 200,000 kilometers, but after 100,000 kilometers, even if there is no problem, it is recommended to replace. Avoid emergency failures.
Therefore, both the timing chain and the timing belt need to be replaced, but the belt must be replaced on time. If the chain is replaced according to the situation, it can be used for a lifetime. Therefore, for timing chains, maintenance is important. Try to avoid their car working frequently at high speed under high loads, and check the chain when maintaining the vehicle so that there is no problem, so the owners who use the timing chain are more accurate in order to reduce the risk of driving