3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Unit Injector Hydraulic Pump - Install

Usage:

769C 01X

安装步骤


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损並縮短部件使用寿命。



注意

不要让脏物进入燃油系统。 彻底清洁将要拆开的燃油系统部件的周围区域。 在拆开的燃油系统部件上安放适当的盖。


注: 仅为拍照而拆下了后冷器。

注: 检查 O 形圈的状态。 如果 O 形圈磨损或损坏,应使用新零件更换。

  1. 将 O 形圈安装到单体喷油器液压泵上,以实现与单体喷油器液压泵驱动装置间的密封。 利用干净的机油轻轻润滑密封。


    图 1g00553109
    典型实例

  2. 采用图中所示方式将吊带和适当的起吊设备固定到单体喷油器液压泵 (14) 上。

    单体喷油器液压泵的重量约为 30 kg (66 lb)



    图 2g00553111
    典型实例

  3. 安装两条螺栓 (15) 和垫圈。


    图 3g00553076
    典型实例

  4. 拆下三条螺栓 (13) 和垫圈。


    图 4g00553074

  5. 连接喷油驱动压力传感器 (10)、机油温度传感器接头 (11) 和机油压力传感器接头 (12)。


    图 5g00553073
    典型实例

  6. 安装两条导线系带 (8) 和 (9)。


    图 6g00553072
    典型实例

    注: 安装进油管组件 (3) 之前,必须充注单体喷油器液压泵。 安装接管 (3) 之前,将 0.95 L (1.00 qt) 干净的机油直接倒入单体喷油器液压泵的入口。

  7. 将 O 形密封圈安装到管组件 (3) 中。 利用干净的机油轻轻润滑 O 形密封圈。 安装管组件 (3)。

  8. 定位卡箍 (4) 后安装螺栓 (5)、螺母和垫圈。

  9. 定位卡箍 (7) 后安装螺栓 (6)、螺母和隔套。


    图 7g00553070
    典型实例

  10. 将 O 形密封圈安装到软管组件 (1) 和 (2) 中。 利用干净的机油轻轻润滑密封。 连接软管组件 (1) 和 (2)。

  11. 上紧软管组件 (1)。

  12. 将软管组件 (2) 上紧到 125 ± 15 N·m (92 ± 11 lb ft)

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