Common faults of the scraper chain: A. The chain is too loose and scrapes against the asphalt mixture. B The asphalt mixture is mixed with steel bars and other sundries, which will block the chain and prevent the scraper from rotating. C. The connecting bolts of the bottom plate of the paver are loose or the bottom plate is cracked and warped, which will block the scraper conveyor. D Right scraper chain is broken. E Scraper chain The rear end bearings are damaged. Generally, it is because the oil seal and dust seal sleeve outside the bearing are damaged. After the asphalt mixture enters, the scraper is stuck or the resistance is too large, resulting in damage to the bearing. The transmission chain is made of high-quality alloy steel.