776D, 777D and 777D HAA Off-Highway Trucks Machine Systems Caterpillar


Electric Drive Pump (Secondary Steering and Brake Release) - Remove

Usage:

776D AFS

拆卸步骤

表 1
所需工具 
工具  零件号  零件说明  数量 
138-7575  连杆支架 

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

热油和热的部件可能会导致人员受伤。 请勿让热的液压油或热的零部件与皮肤接触。



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。


注: 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。

  1. 将适当的容器放置在电动泵下方收集液压油,以便于存放或处理。

  2. 将转向油箱中的液压油排入合适的容器中,以便存放或进行处置。 转向油箱的容量为 40 L (11 US gal)。 请参阅操作和保养手册, "转向系统油 – 更换"。


    图 1g00697541

  3. 将工具 (A) 固定至板 (3)。 将适当的吊索固定到工具 (A) 上。 将吊索固定到适当的举倾机构上。

  4. 拆下螺栓 (1) 和垫圈。 拆下四个螺栓 (2) 和垫圈。 拆下板 (3)。


    图 2g00697543

  5. 从电动泵 (4) 上断开电缆组件 (5) 和电缆组件 (6)。


    图 3g00697544

  6. 从电动泵上断开软管组件 (7)、软管组件 (8) 和软管组件 (11)。

  7. 从电动泵上断开软管组件 (9)、软管组件 (10) 和软管组件 (12)。


    图 4g00697545

  8. 将适当的吊索绕电动泵 (4) 放置,如图所示。 将适当的起吊设备固定在举倾机构上。 拆下将电动泵 (4) 固定到机器上的四个螺母 (13) 和硬垫圈。

  9. 从机器上拆下电动泵 (4)。 电动泵的重量为 26 kg (57 lb)

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