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


Dryer (Refrigerant) - Remove and Install

Usage:

776D AFS

拆卸步骤

------ 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"。



    图 1g00712187

  1. 在快速接头上将两条软管组件 (3) 和 (5) 从干燥器 (1) 上断开。

  1. 拆下螺栓 (4) 和硬垫圈。 拆下两个夹子 (2) 和干燥器 (1) 。

安装步骤

注: 干燥器侧面具有箭头。 此箭头必须与流体的流向一致。




    图 2g00712187

  1. 定位干燥器 (1) ,如图所示。 安装两个夹子 (2) 、螺栓 (4) 和硬垫圈。

  1. 在快速接头上将软管组件 (3) 和 (5) 连接到干燥器 (1) 上。

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