3176C, 3406E and 3456 Industrial Engines Caterpillar


Engine Has Mechanical Noise (Knock)

Usage:

3196 1DW

可能原因

  • 附属设备

  • 配气机构部件

  • 活塞

  • 曲轴

  • 齿轮系

建议的措施

附属设备

隔离噪音源。 拆下可能有故障的发动机附件。 检查可能有故障的发动机附件。 如有必要,修理发动机附件和 / 或更换发动机附件。

配气机构部件

拆下气门机构盖。 检查下列各项有无损坏:凸轮轴, 气门转动线圈, 气门弹簧, 凸轮轴随动件, 摇臂轴, 气门桥 和 喷油器。 彻底清洁配气机构部件。 如果更换凸轮轴,则也应更换气门挺杆。 确保所有气门都能自由运动。 更换所有损坏的零件。

活塞

检查活塞有无损坏和磨损。 更换所有损坏的零件。

曲轴

检查曲轴和相关部件。 检查曲轴上的连杆轴承和轴承表面。 确保轴承处于正确位置。 查找止推片和曲轴有无磨损。 检查配重螺栓。 更换所有损坏的零件。

齿轮系

检查齿轮系的状况。 更换所有损坏的零件。

检查飞轮和飞轮螺栓。

检查发动机机油滤清器有无非铁质材料。 非铁质碎屑可能表明齿轮系轴承磨损。

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