Engine timing belt, engine balance shaft belt, generator, water pump belt, air conditioning belt, booster pump belt. Generally, the timing belt is the most important. If the timing belt is broken, the engine will not start, and the cylinder head and cylinder will be damaged in serious cases. Generally, change it every 60000 km,. The new rubber belt is widely used in the car engine drive system because of its low noise, smooth operation and strong adaptability. At present, there are two types of transmission belts used in automobile engines: one is timing belt, which is mainly used in timing drive system; One is accessory belt (including micro-v belt and V belt) - mainly used in accessory drive system.
Due to the higher and higher requirements for environmental protection and comfort, the whole engine structure is compact, and the transmission gear train of engine front-end accessories is becoming more and more complex. The working state of the gear train directly affects the reliability of the whole vehicle, especially the timing belt undertakes the synchronous transmission of the engine valve timing. If the timing is out of synchronization due to the abnormal timing belt, it may cause the collision between the valve and the piston, resulting in catastrophic damage to the engine.
Rubber is an important part of transmission belt, and the aging process of rubber products is always in progress. In the normal working environment, the transmission belt can reach an ideal service life, but in the actual use and maintenance, we are likely to affect the service life of the transmission belt due to some improper disposal.
1. Ambient temperature factor:
For modern engines, compact engine compartment, high compression ratio, turbocharging in some models and so on will increase the temperature in the engine compartment and make the working environment of the transmission belt very bad. Experiments show that the service life of the transmission belt decreases sharply with the increase of ambient temperature. In hot summer, when you ignore the pointer of the water temperature gauge, you are not only hurting your engine, but also accelerating the consumption of the service life of your drive belt.
2. Lubricating oil factors:
Similarly, lubricating grease will accelerate the aging process of rubber. Therefore, when removing and installing the drive belt, if your hands are stained with grease, please wipe it clean before operation! Remember, never place the drive belt in oil!!! If your drive belt is accidentally stained with oil, please use it carefully and replace it immediately.
3. Installation tension:
For accessory belts, they are driven by the friction between the two sides of the belt and the pulley. Therefore, the installation tension will directly affect the service state of the drive belt: if the tension is too small, it will cause the belt slip, which will not only aggravate the wear of both sides of the belt, but also accelerate the aging process of the belt; If the installation tension is too large, it may lead to delamination of the belt and loss of working capacity.
Please pay attention to the installation in strict accordance with the installation tension requirements specified by the manufacturer!
Please check and adjust the belt tension regularly to keep it within the specified range!
4. Transmission system factors:
The transmission belt has high requirements for the transmission system. The flatness and coaxiality of components in the same transmission plane directly affect the service life of the transmission belt. In the whole transmission plane, only the transmission belt belongs to rubber parts. The interference between the belt and this part caused by the abnormality of any part will seriously damage the transmission belt. After long-term operation of the transmission end face, the original flatness or coaxiality of the end face components may be damaged due to wear and other reasons.
Please pay attention to regularly check the operation of end face components!
5. Impact of splashing foreign matters
Due to the complexity of vehicle driving conditions, it is very possible to splash foreign matters on the belt or pulley in the external harsh driving environment. Under the condition of high-speed operation, the foreign matters are like a knife cutting the belt, which will quickly lead to the damage of the transmission belt.
Please check the transmission system for foreign matters after driving in a harsh environment!
6. Belt bending
Cord is also an important part of belt. It will cause attenuation of belt tension under small bending radius! Especially the timing belt: because its cord is made of glass fiber; Glass fiber is relatively fragile. Even under a small bending radius, this kind of cord will cause serious attenuation of belt tension. Therefore, it is forbidden to bend the timing belt too much!
If the belt is under a small bending radius, it shall be wrapped on the round bar to avoid sharp angle of belt bending.
7. It is forbidden to pry the drive belt with tools during the removal and installation of the belt.
8. Suggestions for storage of drive belt
During storage, the warehouse temperature should be kept between - 15 ~ 40 ° C and the relative humidity should be kept between 50% ~ 80%.
During storage and transportation, avoid direct sunlight or rain and snow, keep clean, and prevent contact with acid, alkali, oil, organic solvent and other substances affecting rubber quality. During storage, avoid deformation of the belt due to excessive weight, prevent mechanical damage and avoid excessive bending
