C280 Marine Engines Caterpillar


Exhaust System Contains Coolant

Usage:

C280-08 J4R
使用以下步骤对排气系统中进入冷却液进行故障排除。

可能原因

  • 泄漏

  • 缸盖衬垫

  • 缸盖

建议的措施

表 1
故障诊断与排除测试步骤  数值  结果 

1. 确定存在泄漏的气缸

A. 加压每个气缸。 有关更多信息,请参阅专门说明书, REHS7138, "适用于 3500 发动机的新缸盖和缸盖密封垫泄漏测试步骤"。
 

泄漏
 

结果:未发现气缸泄漏。

转至测试步骤 2。

结果:发现气缸泄漏。

修理:修理或更换损坏的部件。 有关更多信息,请参阅拆解和装配手册。

如果故障未得到排除,则转至测试步骤 2。
 

2. 检查缸盖垫片

A. 拆下缸盖。 有关更多信息,请参阅拆解和装配手册。

B. 检查缸套突出量。 请参阅测试和调整, "缸套凸出量"以了解更多信息。
 

缸盖垫片
 

结果:缸盖密封垫和水密封件没有泄漏。

转至测试步骤 3。

结果:缸盖密封垫和/或水密封件泄漏。

修理:在隔板上安装新缸盖密封垫和新水封。 有关更多信息,请参阅拆解和装配手册。

转至测试步骤 3。
 

3. 检查缸盖

A. 检查缸盖中有无裂纹。

B. 对缸盖执行泄漏测试。 请参考测试和调整手册了解更多信息。
 

缸盖
 

结果:在缸盖内发现裂纹。

修理:修理或更换缸盖。 有关更多信息,请参阅拆解和装配手册。

确认修理后故障得到排除。
 

如果以上步骤未解决问题,请联系当地 Cat 代理商的技术通信员(TC)。 如需进一步的帮助,您的 TC 可以通过代理商解决方案网络(DSN)与您交谈。

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