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


Control Valve (Hoist) - 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部件。

  1. 排放液压油箱(举倾机构和制动器)。 请参阅操作和保养手册, "举倾机构和制动器油箱油 - 更换"。 液压油箱(举倾机构和制动器)的容量为 133 L (35 US gal)


    图 1g00547272

  2. 从举倾机构控制阀 (1) 上断开软管组件 (2)。


    图 2g00520491

  3. 从举倾机构控制阀 (1) 上断开软管组件 (3)。


    图 3g00520777

  4. 断开线束组件 (4)。

  5. 对其余线束组件重复步骤 4。


    图 4g00520778

  6. 将吊索绕在举倾机构控制阀 (1) 周围,如图所示。 将吊索固定到适当的起重机上。 将螺栓 (5)、硬垫圈和举倾机构控制阀 (1) 从机架组件上拆下。 举倾机构控制阀 (1) 的重量约为 87 kg (192 lb)

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