C3.3B and C3.8 Engines for Caterpillar Built Machines Caterpillar


Coolant Level Is Low

Usage:

299D3XHP AN9
利用本步骤排除冷却液液位低故障,或者在下列任一代码为现行状态时采用本步骤。 关于事件代码的信息,请参阅故障诊断与排除, "事件代码"。 参考故障排除, "诊断故障代码"以了解有关诊断代码的信息。 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。 关于发动机监控系统的信息,请参阅故障诊断与排除, "发动机监控系统"。

可能原因

  • 冷却液液位低和/或冷却液泄漏

建议的措施

注: 下面以概率的先后顺序列出了这些步骤。 依次完成这些步骤。

表 1
故障诊断与排除测试步骤  数值  结果 

1. 冷却液液位低和/或冷却液泄漏

A. 检查冷却液液位。
 

冷却液液位
 

结果:发动机冷却液液位正常。

结果:发动机冷却液液位不正常。

对冷却液液位不当的原因进行故障排除。

1. 检查防冻剂和水的混合是否正确。 参考操作和保养手册。

2. 检查冷却系统有无泄漏。 参考系统操作/测试和调整, "冷却系统 - 测试",以了解正确的步骤。 立即修理所有泄漏。

3. 检查冷却系统中有无空气。 参考系统操作/测试和调整, "测试冷却系统",以了解正确的步骤。
 

按所列步骤顺序完成以上步骤。

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