C4.4 and C6.6 Engines for Caterpillar Built Machines Caterpillar


Excessive Valve Lash

Usage:

CS-56B 437
注: 这不是电子系统的故障。

可能原因

  • 润滑

  • 配气机构部件

  • 气门间隙

建议的措施

润滑

  1. 拆下气门机构盖。 有关正确程序,请参阅拆解和组装, "气门机构罩盖 - 拆卸和安装"。

  2. 让发动机盘车,检查阀门室中的润滑情况。 确保阀门室中有足够的发动机机油流量。 发动机机油通道必须清洁。

    注: 不要在没有气门机构罩盖的情况下运转发动机。

配气机构部件

  1. 检查配气机构的下列部件:

    • 摇臂

    • 气门桥

    • 推杆

    • 气门挺杆

    • 凸轮轴

    • 气门杆

    • 摇臂轴

  2. 检查内部部件有无下列情况:异常磨损, 过度磨损, 平直 和 清洁。 如有必要,换上新的零部件。

    注: 如果更换凸轮轴,则也必须使用新的气门挺杆。

气门间隙

调整发动机的气门间隙。 有关正确的程序,请参阅系统操作、测试与调整, "发动机气门间隙 - 检查 / 调整"。

Caterpillar Information System:

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