773D, 773E, 775D and 775E Off-Highway Trucks Machine Systems Caterpillar


Piston Pump (Steering) - Remove

Usage:

773D 7CS

拆卸步骤

开始:

  1. 安装车斗固定销。 请参阅拆解和组装, "挡圈和销钉(车斗)- 拆卸和安装"。


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。


------ 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。

卸下机具和其油路之前,必须先把机具放到地面上,让油先冷却,才可进行工作。 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。


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. 将液压油箱(转向)中的油排入合适的容器,以便储存或废弃处理。 请参阅操作和保养手册, "转向系统油 – 更换"。

  2. 将适当的容器放置在转向活塞泵下方收集液压油,以便于储存或弃置。


    图 1g00505135

  3. 从转向活塞泵 (2) 上断开软管组件 (1)。


    图 2g00505140

  4. 从转向活塞泵 (2) 上断开软管组件 (3)。


    图 3g00505166

  5. 将适当的起吊设备绕在转向活塞泵 (2) 上。 转向活塞泵 (2) 的重量约为 42 kg (93 lb)

  6. 卸下螺栓 (4)。 拆下转向活塞泵 (2)。 拆下花键连接器。


    图 4g00505172

  7. 从转向活塞泵 (2) 上卸下 O 形密封圈 (5)。

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