1. The knuckle shaft and bracket tube are bent due to collision. The knuckle shaft and the positioning pin shaft hole of the bracket tube can be welded. The upper hole is welded and the latter is repaired. The lower hole is welded and the front edge is repaired, and the hole is repaired and the hole is rounded off. 2. The ellipticity of the pin shaft hole appears due to the loosening and loosening of the fixing screws. The front face is worn on the front face, and the bottom hole is worn on the rear face. The knuckle shaft and the upper face of the bracket tube are worn behind, the lower hole is worn on the front face, and the four pins are Holes appear elliptical. Can be repaired and repaired at the wear, and repaired with a file, such as the positioning pin worn out of the groove, should be repaired or replaced with a new one. 3, repair and repair, so that both sides of the front and rear wheelbase are equal. Food Additives,Natural Food Additives,Food Additive Saccharin,Popular Food Additives SHANDONG BAISHENG BIOTECHNOLOGY COM , https://www.baishengbioproducts.com