By analyzing reasons for break of engine crankshaft journal and bearing, this paper describes mainly some countermeasures they are break in use and maintenance.
通过对发动机曲轴轴颈与轴承损坏原因的分析，重点阐述了发动机在使用与维修中预防损坏的措施和方法。
The reasons include inappropriate maintenance, component failures, filter blockage, bad crankshaft bearing shells, inappropriate fit clearances, abnormal diesel engine vibration and etc.
烧损原因包括保养不当、部件故障、滤清器堵塞、轴瓦质量不高、配合间隙不合适以及柴油机异常振动等。
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