69D and 769D Off-Highway Trucks and 771D Quarry Truck Machine Systems Caterpillar


Pressure Protection Valve - Remove and Install

Usage:

769D 5SS

拆卸步骤

开始:

  1. 释放气罐中的空气。 请参阅拆解和组装, "气罐(制动器)- 排气"。

  2. 从驾驶室上拆下后盖。 请参阅拆解和组装, "盖(驾驶室后部)- 拆卸和安装"。

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

    车斗降下后,车斗与机架之间没有空隙。 如果不安装固定缆线,可能会导致在此区域作业的人员受伤或死亡。


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

    为防止可能的人身伤害,在断开空气系统的任何部件前,释放空气箱压力。


    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. 在所有软管组件上作识别标记,以便于安装。


    图 1g00560098

  2. 从压力保护阀 (2) 上断开三个软管组件 (1)。


    图 2g00560101

  3. 拆卸将压力保护阀 (2) 固定至驾驶室的螺栓 (3) 和垫圈。 将压力保护阀 (2) 从驾驶室上拆下。


    图 3g00560103

  4. 将两个接头组件 (4) 和 (5) 从压力保护阀 (2) 上拆下。

安装步骤

  1. 安装之前先核实压力保护阀的所有部件清洁无异物。

  2. 检查所有部件是否磨损,必要时更换部件。


    图 4g00560103

  3. 将两个接头组件 (4) 和 (5) 安装至压力保护阀 (2)。


    图 5g00560101

  4. 将压力保护阀 (2) 置于驾驶室上。 安装将压力保护阀 (2) 固定至驾驶室的螺栓 (3) 和垫圈。


    图 6g00560098

  5. 将三个软管组件 (1) 连接至压力保护阀 (2)。

结束:

  1. 将后盖安装至驾驶室。 请参阅拆解和组装, "盖(驾驶室后部)- 拆卸和安装"。

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