C11 and C13 Engines and 14M and 16M Motor Graders Caterpillar


Fuel Pressure Is High

Usage:

16M B9H
采用此步骤对燃油压力高进行故障诊断与排除。 如果下列事件代码激活,采用此步骤。 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 ET(Electronic Technician,电子技师)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    
E096(1) 燃油压力高     燃油压力高于特定延迟时间的预设触发点。     将会记录该代码。    

可能原因

  • 燃油压力调节阀

  • 压力安全阀

  • 燃油管

建议的措施

燃油压力调节阀

燃油压力调节阀工作不正常可能会导致高燃油压力。 如果怀疑有问题,检查回油压力调节阀。 清除所有可能影响调节阀正常工作的污染物或碎屑。 如果存在碎屑,找出污染物的来源。 如果回油压力调节阀磨损或损坏,更换该阀门。

安全阀

检查位于输油泵体内的安全阀。 检查弹簧或阀组件有无损坏。

燃油管

检查燃油管有无损坏。 回油管受阻会增加燃油压力。

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