3176C, 3406E and 3456 Industrial Engines Caterpillar


Exhaust System Contains Oil

Usage:

3196 1DW

可能原因

  • 涡轮增压器密封损坏

  • 气门导管密封磨损或损坏

  • 气门导管磨损

  • 活塞环磨损

  • 缸套划伤或磨损

建议的措施

涡轮增压器密封损坏

检查进气歧管和排气歧管中有无机油。 如果机油存在,则更换涡轮增压器。

气门导管密封磨损或损坏

检查气门导管密封有无磨损或损坏。 必要时,更换气门导管密封。

气门导管磨损

检查气门导管有无磨损。 关于气门导管的最大允许磨损量,请参阅技术参数手册。 必要时,修复缸盖。

活塞环磨损

活塞环过度磨损可导致曲轴箱内压力过高。 曲轴箱内的过高压力会导致曲轴箱呼吸器的窜气量超出正常值。 利用 8T-2700 窜气量/空气流量指示仪 检查曲轴箱窜气量。 此测试程序位于专门说明书, SEHS8712 内。 根据需要检查活塞环和安装新零件。

缸壁划伤或磨损

检查缸套有无损坏。 通过研磨缸套去除划伤。 必要时,安装新缸套。

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