Can Engine Bearing Wear Be Repaired?
1 Answers
If the engine bearing wear is not severe, it can still be repaired. There are many reasons for engine bearing wear. Poor quality of crankshaft and bearings: The surface finish of the journal and bearing is poor, especially for vehicles that have undergone major repairs and had their bearings replaced. If the grinding and scraping work during the major repair is not done meticulously, the fit between the shaft and bearing after installation will be poor, with insufficient contact area to form an oil film. Additionally, if there is a gap behind the bearing, the alloy and bearing cannot fully adhere tightly, leading to loosening and misalignment, which can block the oil hole and interrupt oil supply, resulting in dry friction. Incorrect installation of main and connecting rod bearings: Improper adjustment of clearance, whether too large or too small, can make it difficult to form an oil film on the contact surface between the shaft and bearing. Sometimes, if the tightening torque of the bearing bolts is too low, the bearings may loosen over time, causing changes in clearance and affecting lubrication. Severe gear wear: Severe wear and failure of the oil pump gears reduce the oil supply pressure, making it difficult to deliver oil to the designated lubrication points, resulting in dry friction of the bearings.
