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Timing Chain Kit: Symptoms and Replacement Time of Timing Chain Elongation

2021-10-19

The main significance of the timing chain is to transmit the power from the crankshaft to drive the valve mechanism of the automobile engine to ensure that the cylinder piston of the automobile engine can normally complete the four strokes of intake, combustion, work, and exhaust, so as to ensure the normal operation of the automobile engine. Work, the whole system is composed of gears, chains and tensioning devices. Among them, the hydraulic tensioner can automatically adjust the tensioning force, so that the chain tension is consistent, not only the safety and reliability have been improved to a certain extent, but also the use of the engine , The maintenance cost has been reduced a lot, which can be described as multiple benefits in one fell swoop.

What are the symptoms of an elongated timing chain?

Generally speaking, the timing chain will not break, it will only be elongated. If the chain is elongated, there will be abnormalities, such as the fault light is on, the abnormal noise is obvious when idling, and the chain will skip teeth after being elongated. It will also damage the engine by topping the valve. Because of the tensioner, after the chain is stretched, the tensioner will rotate outwards and continue to tighten the chain. When the tensioner is adjusted to the limit, the chain can no longer be adjusted if it is stretched, and it needs to be replaced at this time.

How many kilometers is the most appropriate to change?

It can be said that the service life of the timing chain is very long. Some cars do not need to be replaced when they are scrapped, and some cars need to be replaced if they are less than 100,000 kilometers. Otherwise, the car cannot be used normally. The service life of the timing chain is generally about 150,000 to 200,000 kilometers. If the car is overloaded for a long time at high speed, it must be inspected for 5 years or 75,000 kilometers. If it is severely worn or damaged, it must be replaced in time. If you drive more gently and the load on the car is relatively small, the service life of the chain will be longer.

Generally speaking, the reliability of the timing chain is very high. It still depends on the driving environment and other key external factors. It is inspected on time according to the conditions of use and environment, and replaced when necessary.