G3516 Petroleum Engine Caterpillar


Engine Valve Lash and Bridge - Check

Usage:

G3516 AL7

------ WARNING! ------

点火系统能造成电击。 避免接触点火系统的部件和线路。

发动机运行时,不要试图卸下气门室罩盖。 变压器在气门室盖上接地。 发动机运行时,如果卸下气门室罩盖,会造成人身伤亡和点火系统的损坏。 没有气门室罩盖,发动机将不能工作。


有关调整气门桥的步骤,参考以下出版物:

  • 发动机的系统操作/测试和调整手册

  • 发动机的技术规格手册

注: 气缸 11 和 12 的气门室盖上贴有气门顺序标签。

咨询您的 Cat 代理商以获得帮助。

气门桥

如有必要,检查并调整气门桥臂。 对每个气缸的两个气门桥臂都执行该程序。

使用 147-5482 气门间隙表执行气门桥检查和调整。

请参阅系统操作/测试和调整, M0081470,了解检查和调整气门桥的步骤。

各缸的气门桥符合要求后,可调整液压间隙调节器。

超稀薄燃烧 (ULB) 气门间隙调整


注意

只有具有资质的维修人员才能执行此项保养。

阀间隙调整不当的 Cat 发动机工作效率会降低。 这种效率降低将导致燃油用量过大和/或发动机部件寿命缩短。 不正确的气门间隙可能会导至气门损坏并导致严重故障。


请参阅测试和调整, SENR6412,了解更多信息。

注: 在初次安装时以及建议的周期内执行气门间隙调整。 关于建议的周期,请参阅本操作和保养手册, "保养周期表"。

进行气门间隙调整前,必须先调整气门桥臂。

保养前要防止异物进入气缸盖和配气机构上部。 彻底清洁气门室盖周围的区域。

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