[ACRON Lecture Hall] Have you experienced the tragic situation of car timing belts not being replaced on time?
Time:
2020-02-27
As we all know, the car is an indispensable means of transportation in our lives. It not only makes our travel convenient, but also brings us endless driving pleasure!
Of course, while the car brings us convenience, it also has a certain consumption and wear. After driving a certain number of kilometers, a series of oils and parts such as engine oil, transmission oil, brake oil, spark plugs, tires, etc. need to be replaced. Aging parts not only affect the driving experience, more serious can directly lead to engine damage.
If the timing belt suddenly breaks when the engine is running at high speed, the engine will not start when the engine stalls, and the engine cylinder head and cylinder block will be scrapped. You don't believe it? Hurry up and look at the following case with Xiaobian!
A car owner's car suddenly went out while driving and could only be towed away by rescue. After on-site analysis, it should be that the timing belt is aging, so the owner towed the car back to the repair shop to replace the timing belt. The repairman checked it again and found that the crankshaft could not rotate, so he suspected that the valve had been pushed. After the owner agreed to disassemble the engine, he saw the following scenario.
This is the timing belt of Dongfeng Yueda Kia 1.3L. It has traveled 100,000 kilometers but has not been replaced. The belt teeth at the crankshaft position have shown obvious signs of falling off.
Think this is the end? NoNoNO, you see even the rocker arm has been broken and turned into a pile of debris, it is simply cold and violent.
Unexpectedly, the valve on the cylinder head was also damaged. This "disaster" may be endless.
05
Seeing this case, to be honest, my scalp is numb. I didn't expect that a belt could cause so many problems!
Impact of belt damage
In fact, the timing belt is responsible for the accurate coordination of the key parts of the engine, so it is essential to the normal operation of the engine. Once the timing belt is damaged, the valve and ignition work will stop or be messed up, and the engine will not work.
And if the design of the lowest point of the valve action of the engine coincides with the top dead center of the piston, then when the timing belt is broken, the crankshaft will drive the piston to continue to move up and down due to inertia, and the valve will stop due to the camshaft. At this time, a certain valve may stop at the lowest point.
When the piston of this cylinder moves to the top dead center, it will collide with the valve. The upper end of the valve is a solid cam and cannot move. As a result, the valve stem is bent and the piston crown is dented. In severe cases, the cylinder head will be damaged. As soon as this happens, the engine needs to be overhauled!
In view of the importance of timing belts, manufacturers generally determine the service life of a referral based on the design and actual conditions, and it is recommended to replace the timing belt when the referral service life cycle arrives. This replacement cycle is clearly indicated in the car's operation manual and repair manual.
Generally, you can consider changing the timing belt when the vehicle has traveled 6-80000 kilometers, especially in the north. I personally recommend that the 60000 should not exceed 80000, and the south should be longer.
Changing the timing belt is a technical task. It is recommended that we find a reliable store to change it. After changing it, we must check whether the timing belt is installed. After some riders change it, the engine will experience increased vibration and increased noise. status. At this time, it is necessary to check in time to avoid other effects.
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