How to Deal with Excessive Engine Bearing Clearance?

[KaydenMarie]

Engine bearing clearance excessive treatment method: There are adjustment shims on the engine bearing seat, and the clearance can be reduced by adding shims. However, this method is ineffective when the lateral clearance is too large, and only replacing new engine bearings is the solution. Engine bearings provide friction protection for connecting rods or crankshafts during high-speed operation. During engine use, incidents of bearing seizure and shaft burning occasionally occur. Bearing seizure and burning are mainly caused by the rupture of the lubricating oil film between the journal and the bearing, leading to friction between the bearing and the crankshaft. Under high temperature, high pressure, and high speed, the wear-resistant alloy layer of the bearing wears prematurely, causing the bearing alloy layer to peel off and adhere to the journal, resulting in mechanical failure of bearing seizure and shaft burning.