MAIN ENGINE – CRANKSHAFT SHEARING OFF :
8 cyl. Engine 24000 BHP.
Failure of lubrication to the particular main bearing due to slipping of metal and blocking the lub oil passage. (Starvation) All the clearances of the said bearing were found to be high.
Due to which bearing inside the shell turned. Blocked the L.O passage, starvation of lub. oil resulted in shearing of crankshaft. On investigation also found bed plate cracked below the bearings. Crankshaft and the bearings were renewed. Bed plate was repaired by metal locking and metal lacing as recommended by the work shop