Many times, the use of pulling down timing belt problems we will first guess is the pulling down timing belt quality problems, in fact, not, pulling down timing belt use problems is not only the reason for itself, Yonghangbelt said there may be because of synchronous belt pulley reasons, but because this is more difficult to identify, so few people will carefully check the pulley, it is considered to be the pulling down timing belt itself problems. If the pulling down timing belt is running on a problematic size pulley, the sides of its teeth will be highly worn with the use of time, while its side of the canvas into a fuzzy fluffy or flaky. If a pulling down timing belt is run on a pulley system with too small a diameter, it can easily split the belt body and cause the belt to break in tension. If the tension is too high, this can lead to more wear and tear on the pulley, which is also a greater hazard for the timing belt. Therefore, we at Yonghangbelt suggest that when using a pulling down timing belt, you should actually pay more attention to the pulley to see if it is qualified.