C3.4B Engines for Caterpillar Built Machines Caterpillar


Fuel Injection Pump - Remove

Usage:

CCS7 4B2

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
388-1289  封盖套件 

开始:

  1. 拆卸喷油泵齿轮。 有关正确步骤,请参阅拆解和组装, "喷油泵齿轮 - 拆卸"。

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

接触高压燃油可能导致液体渗透和烧伤危险。 高压燃油溢出可能会产生火灾。 如果不遵循检查、保养和维修指南,可能会造成人身伤亡。



注意

请确保对燃油系统进行的所有调整和修理均由经过适当培训的授权人员执行。

在燃油系统上开始任何工作之前,请参阅操作和保养手册, "一般危险信息和高压燃油管路"以了解安全信息。

有关在所有燃油系统工作期间必须遵循的清洁度标准的详细信息,请参阅系统运作,测试和调整, "燃油系统部件清洁度"。


  1. 将燃油供应转到断开位置。

  2. 将蓄电池断路开关转到断开位置。

  3. 将线束组件 (1) 从喷油泵 (6) 上的电磁阀上断开。

    注: 应远离喷油泵定位线束组件,以避免妨碍喷油泵。



    图 1g02709437

  4. 将适当的容器放置到喷油泵下方,用来盛装所有可能溢出的燃油。

  5. 清洁喷油泵及其周围区域。 开始组装前,确保该区域无污染。

  6. 拆下将喷油泵 (6) 连接到燃油歧管上的喷油管 (7)。 有关正确的步骤,请参阅拆解和组装, "燃油喷油管 - 拆卸"。

    注: 废弃喷油管路。

  7. 立即用工具 (A) 盖住喷油泵中的开口。

  8. 立即用工具 (A) 盖住燃油歧管中的开口。

  9. 为便于安装,在所有塑料管组件上做临时识别标记。

  10. 将塑料管组件 (2)、塑料管组件 (3)、塑料管组件 (4) 塑料管组件 (5) 从喷油泵 6 上断开。

  11. 立即用工具 (A) 盖住喷油泵中的开口。

  12. 立即用工具 (A) 塞住塑料管组件。


    图 2g02709476
    喷油泵后视图

  13. 将螺母 (8) 从喷油泵 (6) 上拆下。

    注: 在螺母拆卸过程中应用手支撑喷油泵。

  14. 从前壳体 (10) 上小心地拆下喷油泵。

  15. 将 O 形密封圈 (11)(未显示)从喷油泵上拆下。

  16. 如有必要,将螺柱 (9) 从前壳体 (10) 上拆下。

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