3176C, 3196 and 3406E Engines for Caterpillar Built Machines Caterpillar


Mechanical Noise (Knock) in Engine

Usage:

3176C 3PD

可能原因

  • 附属设备

  • 配气机构部件

  • 连杆和主轴承

建议的措施

附属设备

隔离噪音源。 拆下怀疑有故障的发动机附件。 检查怀疑有故障的发动机附件。 如果发现任何缺陷,请修理和/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, 气门旋转器, 气门弹簧, 挺杆, 推杆 和 气门桥。 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。

连杆和主轴承

检查连接杆和主轴承。 此外,请检查曲轴轴承表面(轴颈) 更换所有损坏的零件。

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