3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Unit Injector Hydraulic Pump Drive - 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: 检查密封垫和 O 形圈的状况。 如果密封垫或 O 形圈磨损或损坏,则用新零件更换。



    图 1g00546090
    典型实例

  1. 将 O 形密封圈 (17) 定位到单体喷油器液压泵驱动装置 (13) 上。

  2. 利用干净的机油轻轻润滑前壳体孔和单体喷油器液压泵驱动装置上的密封。

  3. 将单体喷油器液压泵驱动 (13) 定位到前壳体上。


    图 2g00546087
    典型实例

  4. 安装两条底部螺栓 (15)。

  5. 安装四个安装螺栓 (14)。 拧紧螺栓 (14) 至扭矩为 5 ± 3 N·m (4 ± 2 lb ft)

  6. 安装定位销 (16) 和密封。 将定位销 (16) 上紧到 105 ± 10 N·m (77 ± 7 lb ft) 的扭矩。

  7. 将安装螺栓 (15) 重新上紧到 55 ± 7 N·m (41 ± 5 lb ft) 的扭矩。


    图 3g00546064
    典型实例


    图 4g00555906
    典型实例

    注: 当 1 号活塞位于上止点时,可以对齐前齿轮总成上的正时标记。 将齿轮 (9) 上的正时标记与凸轮轴齿轮上的标记对齐。 图 4 内显示了正时标记的对齐。

  8. 将齿轮 (9) 定位到液压泵驱动装置上。 利用四条螺栓 (10) 安装挡板 (11)。 将四条螺栓上紧到 135 ± 20 N·m (100 ± 15 lb ft) 的扭矩。

  9. 将两个正时传感器 (12) 安装到前壳体内。 请参阅拆解和组装, "转速/正时传感器 - 拆卸和安装"。


    图 5g00546046
    典型实例

  10. 安装夹子 (8)、垫圈和螺母。

  11. 连接涡轮增压器出口压力传感器的接头 (6)。 连接大气压力传感器接头 (7)。

  12. 利用 O 形密封圈连接软管组件 (5)、 (4) 和 (2)。 通过安装导线系带 (3) 固定导线。


    图 6g00546045
    典型实例

  13. 连接燃油温度传感器接头 (1)。

结束:

  1. 安装单体喷油器液压泵。 请参阅拆解和组装, "单体喷油器液压泵 - 安装"。

  2. 安装前盖。 请参阅拆解和组装, "前盖 - 安装"。

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