C9 Engine for the 816F Series 2 Landfill Compactor, the 815F Series 2 Soil Compactor, and the 814F Series 2 Wheel Dozer Caterpillar


Coolant Temperature Is High

Usage:

814F II BXG
使用本程序诊断和排除冷却液温度高故障,或者在下列任一事件代码为激活状态时使用本程序。 有关事件代码和这些代码的默认触发点的信息,请参阅 故障诊断与排除, "事件代码列表"。 必须进入 Caterpillar 电子技师(ET)上的监控系统才能查看这些代码的当前触发点。

表 1
事件代码    
代码和描述     产生此代码的状况     系统响应    
E361(1) 发动机冷却液温度高     发动机冷却液温度超过触发点,延迟时间终止。     将会记录该代码。    
E361(2) 发动机冷却液温度高     发动机冷却液温度超过触发点,延迟时间终止。     发动机功率减额。 将会记录该代码。
每超过触发点 1 度则减额 25%。    

可能原因

  • 冷却液液位低和 / 或冷却液泄漏

  • 水温调节器和/或安全阀

  • 散热器

  • 发动机冷却风扇(如有配备)

  • 冷却液泵

  • 冷却液温度传感器

建议的措施

冷却液

  1. 检查冷却液液位。 如有需要,添加冷却液。

  1. 检查防冻剂和水的混合液。 请参阅操作和保养手册。

  1. 检查冷却系统有无泄漏。 立即修理所有泄漏处。

  1. 检查冷却系统中有无空气。 有关正确的程序,请参阅系统操作/测试和调整。

水温调节器和/或安全阀

  1. 对冷却系统进行压力测试。 有关正确的程序,请参阅系统操作/测试和调整。

  1. 检查安全阀的座表面和散热器盖是否清洁无损。

  1. 检查安全阀和/或水温调节器的工作情况。 如有必要,清洁部件和/或更换部件。

散热器

  1. 检查散热器叶片上有无脏物、碎屑和/或损坏。 清除所有脏物和/或碎屑,将弯曲的叶片矫直。 检查有无软管皱缩和/或其它阻塞情况。

  1. 检查散热器内部有无堵塞情况。 请参阅系统操作 / 测试和调整,以了解更多信息。

发动机冷却风扇故障(如有配备)

  1. 如果风扇由皮带驱动,检查其是否松弛。 松动的风扇传动带会造成流过散热器的空气流量降低。 检查风扇传动带是否具有正确的皮带张紧度。 如有必要,调整风扇传动带的张紧度。 请参阅操作和保养手册。

  1. 检查风扇离合器(如有配备)。 风扇离合器或液压驱动风扇如果没有以正确的转速运转可能造成流过散热器芯的空气速度不当。 缺乏适当的流过散热器芯的气流可能造成冷却液没有冷却到适当的温差。

冷却液泵

  1. 检查冷却液泵的叶轮有无损坏和/或腐蚀。

  1. 确保冷却液泵主动轴上的主动齿轮没有松动。

  1. 必要时,更换冷却液泵。 有关正确的步骤,请参阅解体与组装。

检查冷却液温度传感器和/电路

检查 Cat ET 上的冷却液温度读数。 当发动机热时,温度应稳定升高。 确保温度合理。

如果 Cat ET 上的冷却液温度读数不合理,诊断和排除电路和冷却液温度传感器的故障。 请参阅故障诊断与排除, "传感器信号(模拟、无源)- 测试"。

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