G3304B and G3306B Engines Caterpillar


Valve Lash Is Excessive

Usage:

G3304B A4E

可能原因

  • 润滑

  • 气门间隙

  • 配气机构部件

建议措施

润滑

  1. 拆下气门机构罩盖。 请参阅发动机的拆解和组装手册。

  1. 检查气门室的润滑情况。 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。

气门间隙

调整发动机气门间隙。 请参考发动机的系统操作 / 测试和调整手册。

配气机构部件

  1. 检查配气机构的下列部件:

    • 摇臂

    • 推杆

    • 气门挺杆

    • 凸轮轴

    • 气门杆

    • 摇臂轴

  1. 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,更换零件。

    注: 如果您更换凸轮轴,必须同时更换气门挺杆。

  1. 调整发动机气门间隙。 请参考发动机的系统操作 / 测试和调整手册。

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