3508B and 3512B Engine Supplement for 776D, 777D, and 777D HAA Tractor/Off-Highway Trucks Caterpillar


Accumulator (Refrigerant) Remove and Install

Usage:

776D AFS

拆卸步骤


注意

在检验、保养、测试、调整及维修产品时,务必留心,确保液体盛装在容器中。 在打开任何腔室或拆解任何储有液体的部件之前,要准备好用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液体的工具及用品,参考专门出版物, NENG2500, "卡特彼勒工具和修理车间设备指南"。

按照当地法规和指令处置所有液体。


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

接触制冷剂会使人受伤。

无论发动机是否运转,系统始终处于压力作用下。 不得对充入系统加热。

接触制冷剂会造成冻伤。 让手、脸避开,有助于防止受伤。

当制冷管路被打开时,即使压力计显示系统中已经没有制冷剂,也要始终戴着护目镜。

拆卸接头时,务必小心谨慎。 慢慢地拧松接头。 如果系统内仍有压力,应将其在通风良好的地方缓慢释放。

通过燃着的香烟吸入制冷剂会使人受伤或死亡。

通过燃着的香烟或其他抽烟方法吸入空调制冷剂气体,或者吸入空调制冷剂气体接触明火而形成的烟雾,都会造成对人体的伤害或死亡。

维修空调时,或者,在任何可能存在制冷剂气体的地方都不要抽烟。

进行空调和加热系统检查前,将机器移至水平路面上。 将所有机具降至地面。 确保变速箱处于空档或停车位置,并且停车制动器接合。 保持其他所有人员远离机器或能够看到他们的地方。


  1. 在空调系统上执行任何维修工作前,请参阅空调和加热器的测试和调整, SENR5664, "故障诊断与排除前的机器准备工作"。

  1. 回收空调系统中的制冷剂。 请参阅空气和加热器的测试和调整, SENR5664, "制冷剂回收"。

  1. 将盖和塞安装在全部孔口上,以免污垢或碎屑进入系统。 清洁度是一项重要的因素。 拆卸步骤开始之前,应彻底清洁部件外部。 这将防止脏污进入内部机构。



    图 1g00712212

  1. 将两条软管组件 (1) 和 (4) 从贮液器 (3) 上断开。 松开两个软管卡箍 (2) 后拆下贮液器 (3) 。

  1. 将贮液器 (3) 中的机油放入适当的容器中。 记录贮液器 (3) 中放出的油量。

安装步骤

  1. 利用制冷剂油润滑所有 O 形密封圈。

    注: 不要继续使用贮液器 (3) 中放出的机油。

  1. 在拆卸程序(步骤 5)中所记录机油量的基础上增加 30 mL(1 fl oz)干净的机油。



    图 2g00712212

  1. 将贮液器 (3) 安装到软管卡箍 (2) 内。 上紧两个软管卡箍 (2) 。 将两条软管组件 (1) 和 (4) 连接到贮液器 (3) 上。

  1. 排空空调系统。 请参阅空调和加热器的测试和调整, SENR5664, "制冷剂系统 - 排空"。

  1. 加注空调系统。 请参阅空调和加热器的测试和调整, SENR5664, "制冷剂系统 - 加注"。

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