320 GC, 320 and 323 Excavator Machine Systems Caterpillar


Main Hydraulic Pump Air - Purge

Usage:

320 GC BR4

简介

完成主泵维修或液压油更换后,请排除液压系统中的空气。 用下述方式排除液压系统中的空气:


注意

在检查、保养、测试、调整及维修产品时,请小心确保盛接油液。 在打开任何舱室或拆卸任何含有油液的部件前,请准备好盛接液体用的适当容器。

有关收集和盛接 Cat® 产品油液的合适工具和用品,请参考专门出版物, NENG2500, "代理商维修工具目录"。

按照本地法规和要求处置所有油液。


------ WARNING! ------

滚热的油或液压油的压力会对人员造成伤害。

发动机停机之后,液压油的压力仍会保留在液压系统里。 对液压系统进行维修之前,如果不事先释放压力,可能会造成严重伤害。

卸下液压系统的部件或管路时,确保所有的作业机具都已降到地面上,而且液压油温度已冷。 只能在发动机停机,并且加注口盖冷却到可以用徒手触摸时才能卸下加注口盖。


步骤



    图 1g06193584
    泵室
    (1) 箱体排油软管
    (2) 弯头
    (3) O 形密封圈

  1. 发动机停止时,将软管 (1) 从弯头 (2) 上断开。

  2. 从泵壳体上拆下弯头 (2) 和 O 形密封圈 (3)。

  3. 向主泵注油。

  4. 在泵壳体处安装新 O 形密封圈 (3) 和弯头 (2)。

  5. 将软管 (1) 连接到弯头 (2) 上。 将软管 (1) 紧固至规定的扭矩。


    注意

    为避免损坏系统,请确保在起动前适当地给液压泵加注液压油。


  6. 起动发动机。

  7. 将发动机置于低怠速位置。 提升动臂并将动臂保持在此位置。

  8. 停止发动机并慢慢地降下动臂,直到作业机具降到地面上。 此步骤对液压油箱进行加压。

  9. 慢慢地松开软管 (1),直到油开始在软管接头周围流动。

  10. 将软管 (1) 紧固至规定的扭矩。

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