Causes and signs of liner crack

Sign of liner crack

• Fluctuation of pressure and temperature of jacket C.W system  
• F.W coming out from the scavenge drains  
• Overload at that particular unit (high in exht: temp: and Jacket temp)  
• Expansion tank foaming

 
CAUSES

• Due to rapid contraction of metal  
• High difference in Jacket water (working) temperature  
• Insufficient cooling  
• Over tightening of cylinder head bolts 
• Design failure 
• After effect of immense Scavenge fire  
• Due to loosened out foundation chocks resulting tie bolt slackening and Hoop Stresses on Cylinder liner increases  
• Due to very high injection viscosity