259D, 279D, 289D, 299D and 299D XHP Compact Track Loaders, 257D, 277D, 287D, 297D and 297D XHP Multi Terrain Loaders and 236D, 242D, 246D, 262D, 272D and 272D XHP Skid Steer Loaders Machine Systems Caterpillar


Piston Pump - Remove and Install - Standard Flow

Usage:

289D A9Z

拆卸步骤

开始:

  1. 释放液压系统压力。

  2. 倾斜驾驶室。

------ 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。


  1. 排放液压油箱。 请参阅操作和保养手册, "液压系统油 - 更换",以了解正确的排放和加注程序。


    图 1g03387313

  2. 断开软管组件 (1) 和软管组件 (2)。


    图 2g03387315

  3. 拆下螺栓 (5)、垫圈和泵供应软管组件。

  4. 拆下螺栓 (4) 和垫圈。 由两个人拆下活塞泵 (3)。 活塞泵 (3) 的重量约为 22 kg (48.5 lb)

安装步骤

  1. 按与拆卸相反的顺序安装活塞泵 (3)。

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