In addition to breaking, leaf springs are prone to displacement and abnormal noise. 1 leaf spring displacement According to the following signs, the leaf spring displacement can be judged: the vehicle has a slanting feeling during exercise; the steering wheel is light and heavy; sometimes Offset phenomenon; parking measurement The left and right wheelbases are not equal; when the U-bolt is in good condition, the head of the leaf spring is struck with a hoe, and if the steel plate is shaken, the center bolt has been broken and the leaf spring is displaced. The main reasons for the displacement of the leaf spring are: loosening or sliding of the U-bolt of the leaf spring; breaking of the central bolt; positioning of the leaf spring and the vehicle, positioning holes or positioning pins, and locating pins due to wear. (2) Abnormal sound of leaf spring When the vehicle is found to be hit by a “bang and bang†metal crash sound during driving, the car will be lifted by parking, and the leaf spring will be in a free state, and the leaf spring will be lifted up and down at the leaf spring hanger bracket. Movement, if there is a clear gap, shows that the abnormal sound is caused by the looseness between the leaf spring pin, the bush and the lug bracket, and the impact between them during the driving; if the vehicle runs under normal loading conditions, the frame and the leaf spring take place. In case of impact, if the abnormal sound is greater on an uneven road, the abnormal sound is caused by the fatigue of the leaf spring and the arc height is not enough.
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