988H Wheel Loader Caterpillar


Fuel System Primary Filter (Water Separator) Element - Replace

Usage:

988H A7A


注意

在检验、保养、测试、调整及维修发动机时,请小心确保盛接流出的液体。 在打开或拆解任何储有液体的部件之前,要准备好合适的容器收集液体。

有关适合收集和盛接卡特彼勒产品上的液体的工具和供应品,请参阅专门出版物, NENG2500, "卡特彼勒代理商工具目录"。

按照本地法规和条例处置所有液体。



注意

安装燃油滤清器之前不要在其中注入燃油。 否则燃油不会被过滤并可能受污染。 污染的燃油会加速燃油系统部件的磨损。 起动发动机之前应向燃油系统充注油。





    图 1g00841382

  1. 打开机器左侧的发动机检修门。



    图 2g01002123

    1 型

  1. 油水分离器位于主燃油滤清器的底部。 打开油水分离器杯上的排放阀。 让水和燃油排放到适当的容器内。

  1. 使用带式扳手从滤清器安装底座卸下滤清器。

  1. 从滤清器滤芯中拆下油水分离器杯。 清洁油水分离器杯和 O 形密封圈槽。

    注: 油水分离器杯可重复使用。 不要扔弃油水分离器杯。




      图 3g01482573

      2 型

    1. 钢制燃油滤清器(2 型)不可重复使用。

  1. 检查油水分离器杯上的 O 形密封圈有无损坏。 如有必要,更换 O 形密封圈。

  1. 用干净的柴油或发动机机油润滑 O 型密封圈。 将 O 形密封圈放置到油水分离器杯上。

  1. 用手将油水分离器杯安装到新滤清器上。 不要用工具来拧紧油水分离器杯。



    图 4g00101318

  1. 在新滤清器上涂抹薄薄的一层机油。 安装新滤清器,用手拧紧,直到发动机机油滤清器的密封圈与底座接触为止。 记下滤清器上分度标记相对于滤清器底座上固定点的相对位置。

    注: 在燃油滤清器上有相互间隔 90 度或 1/4 圈的旋转分度标记。 拧紧燃油滤清器时,使用旋转分度标记作为参照。

  1. 根据滤清器上的说明拧紧滤清器。 用分度标记作为参照。 对于非卡特彼勒滤清器,遵照随滤清器一起提供的说明书。

  1. 拧紧油水分离器杯上的排放阀。

    注: 发动机正常运转过程中,油水分离器处于吸入状态。 排放阀必须拧紧,以防空气漏进燃油系统。

  1. 向燃油系统充油,以便将燃油注入燃油滤清器。

    参考请参阅 操作和保养手册, "燃油系统充油" 以了解正确的程序。

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