C3.3B Engines for Caterpillar Built Machines Caterpillar


Exhaust Gas Recirculation Valve - Remove and Install

Usage:

236D BGZ

拆卸步骤

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

热的冷却液、蒸汽和碱会造成人身伤害。

在工作温度下,发动机冷却液是热的而且处在压力下。 散热器和所有到加热器的管路或发动机中都有热的冷却液或蒸汽。 与它们的任何接触都会造成严重烫伤。

只有当发动机停机且冷却系统压力盖已经冷却到可以徒手触摸时,再慢慢拆下冷却系统压力盖以释放压力。

不要试图在冷却液还热的时候去拧紧软管接头,软管会脱落而造成灼伤。

警告:冷却系统的冷却液添加剂含碱。 应避免它与皮肤和眼睛接触。



注意

在进行检验、保养、测试、调整及维修产品期间,必须小心以确保装好排放出的油液。 在打开任何舱室或解体任何储有液体的部件之前,要准备好合适的容器收集液体。

有关收集和盛接 Cat 产品上油液的适用工具和用品,请参阅专门出版物, NENG2500, "代理商维修工具目录"。

按照当地法规和要求处置所有液体。


注: 参考技术规格, "发动机设计",了解非指定的发动机扭矩值。



    图 1g02824663

  1. 将冷却液排放至低于废气再循环阀的液位。 拆下隔热罩 (1)。


    图 2g03337068

  2. 断开软管 (2) 和 (3)。 拆下螺栓 (4)。


    图 3g03366811

  3. 断开线束组件 (9)、软管 (6) 和 (10)。 拆下螺栓 (11) 和螺栓 (7)。 拆下废气再循环阀 (5) 和冷却器组件 (8)。


    图 4g03366813

  4. 将螺钉 (13) 和簧片阀 (12) 从废气再循环阀 (5) 上拆下。

安装步骤

  1. 按与拆卸相反的顺序安装废气再循环阀 (5)。

    1. 拧紧螺栓 (4) 和 (11) 至扭矩为 24 to 27 N·m (212 to 239 lb in)

    2. 拧紧螺钉 (13) 至扭矩为 10 to 11 N·m (89 to 97 lb in)

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