Cause: The front wheel fastening nut is loose; the front wheel bearing clearance is too large and is damaged by the impact, “bite†the front axle; the front axle and bearing dry friction or long-term lubrication is bad, resulting in damage. Exclusion: Replace the front wheel bearing, fasten the fastening nut, and use a split pin to lock firmly. After assembly, carefully check the adjustment of the front bearing clearance. At the same time, it is necessary to regularly fill the forward bearing and other parts of the lubrication oil to ensure good lubrication of the bearing and prolong the service life of the bearing. Sunflower Kernel,Sunflower Seed Kernels,Flavored Sunflower Kernels,Raw Sunflower Kernels Wuyuan county dafeng oil food co.,ltd , https://www.dafengfood.com.cn