3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Vibration Damper - Check

Usage:

769C 01X

橡胶减振器(如有配备)



图 1g01124289
减振器和皮带轮
(1) 适配器
(2) 橡胶
(3) 减振器组件
(4) 螺栓
(5) 曲轴皮带轮

减振器安装在曲轴前端。 减振器组件 (3) 中的空间充满橡胶 (2)。 减振器限制了扭转振动。

如果存在下述情况之一,则应更换减振器:

  • 减振器有缺口或裂纹。

  • 减振器上的油漆因受热而变色。

  • 齿轮传动系有并非因缺少机油而造成的的大量磨损。

  • 机油分析显示前主轴瓦严重磨损。

  • 发动机曾发生因曲轴断裂而引起的故障。

粘性减振器(如有配备)



图 2g01363868
粘性减振器
(6) 皮带轮
(7) 重块
(8) 壳体

减振器损坏或减振器有故障会增大扭振。 这将会导致曲轴的损坏。

如果存在下述情况之一,则应更换减振器:

  • 减振器有缺口、裂纹或液体渗漏。

  • 减振器上的油漆因过热而变色。

  • 减振器弯曲。

  • 螺栓孔磨损或螺栓连接松动。

  • 发动机由于扭转力而造成曲轴故障。


注意

检查 粘滞减振器有无渗漏和外壳损坏的迹象。 这两个情况中的任何一个都可能导致重块与外壳相接触。 这种接触会影响减振器的操作。


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