Reasons for the failure of the connecting rod shaft of diesel engine
1. Poor lubrication. The fit clearance between the journal and the bearing does not meet the standard. The oil grade is wrong. The addition of ordinary diesel engine oil causes poor lubrication, causing the wear of the bearing bushes to increase, resulting in burning of the tiles. Then there was a problem with the oil pipeline. There was a lot of leakage and the engine burned.
2. The big bore of the connecting rod wears, the bearing bushes go out of the circle, the oil hole is blocked, the journal is elliptical, and the bearing bush and the journal are in poor contact.
The quality of the 3 bearing bushes or installation problems causes the bearing pads to deform, causing the alloy to fall off and burn tiles.