914G Compact Wheel Loader and IT14G Integrated Toolcarrier Transmission Electronic Control System Caterpillar


Symptom Troubleshooting

Usage:

IT14G 1WN
诊断和排除症状时使用以下指南:

了解机器

了解机器的工作情况。 了解该症状是正常的工作特性还是故障。

阅读系统操作信息,了解机器的所有系统。 了解机器系统的相互作用。

了解症状

向操作员了解症状情况。 需要以下信息:

  • 发生故障前机器的性能

  • 症状的第一次出现

  • 发生故障时的工作状况

  • 发生故障之前的事件顺序(发生顺序)

  • 所采用的故障诊断和排除的步骤

  • 机器修理历史记录。

  • 机器预防性保养

  • 与该机器序列号和当前故障的相关维修信息

  • 检查机器。 查找故障。 注意空气中任何异常气味。 倾听是否有异常噪音。

执行"目视检查"步骤。 请参见故障诊断和排除, "准备进行机器的故障诊断和排除"。

确认症状

可能时,试着重现症状。 运转机器并再现引起故障的工况。 检查驾驶室仪表。 注意空气中任何异常气味。 倾听是否有异常噪音。

确认 ECM 是否检测到故障。 诊断代码指明各个检测到的故障。

检测可能的原因

利用从操作员和您检测时获得的信息 如果有多个症状,尝试确定一个通常原因。

如果进行故障代码的故障诊断与排除后该故障仍未排除,则利用本手册中的 "症状诊断和排除" 章节继续进行故障诊断与排除。 确定最有可能引起该症状的部件。

试验和修理系统

使用本手册中的测试和步骤来确定症状的原因。 一旦确定症状原因,修理故障。 然后,再次测试系统,确认故障已排除。

反馈到 Caterpillar

共享故障诊断和排除信息。 执行完正确的修理后,写一份有关机器症状、测试和修理的简要说明。 为此可使用 "SIS" 中的表格或 "CBT" 反馈。 包括电话号码或电子邮件地址,以便和您联系。 该反馈信息有助于 Caterpillar 改善服务信息。

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