C4.4 Industrial Engine Caterpillar


Valve Mechanism Cover - Remove and Install

Usage:

C4.4 444

拆卸步骤

开始:

  1. 断开曲轴箱通气孔的连接或拆下曲轴箱通气孔。 请参阅拆解和组装 , "曲轴箱通气孔 - 拆卸和安装" 。


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损和缩短部件寿命。




    图 1g01788614

  1. 如果阀机构罩盖配备热屏蔽,从热屏蔽 ( 2) 上拆下螺栓 (1)和垫圈 ( 3)。

    注: 有两种不同尺寸的垫圈。 请注意用于安装的垫圈的位置。

  2. 拆下热屏蔽 (2)。


    图 2g01788720
    典型实例

  3. 从阀机构罩盖 (6) 上拆下螺栓 ( 4) 和螺栓 (5)。

  4. 从阀机构罩盖底座上拆下阀机构罩盖 ( 6)。

  5. 从阀机构罩盖 (6) 上拆下垫片 ( 7)。

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和缩短部件寿命。


  1. 彻底清洁阀机构罩盖。 清洁阀机构罩盖底座的表面。


    图 3g01788720
    典型实例

  2. 将新的垫片 (7) 安装到阀机构罩盖 ( 6) 上。

    注: 确保垫片完全装入阀机构罩盖的槽。



    图 4g01788815
    典型实例

  3. 确保线束组件 (9) 未接触摇臂或阀机构罩盖底座。 将阀机构罩盖 (6) 放置在阀机构罩盖底座 ( 8) 上。 确保在装配过程中线束组件 ( 9) 连接顺畅。 安装螺栓 ( 4) 和螺栓 (5)。


    图 5g01245162
    配气机构盖的紧固顺序

  4. 根据图 5 中的数字顺序拧紧螺栓 ( 4) 和螺栓 (5)。 拧紧螺栓至扭矩 6 N·m (53 lb in)


    图 6g01788614

  5. 如有必要,将热屏蔽 ( 2) 放置在阀机构罩盖上。

  6. 安装螺栓 (1) 和垫圈 ( 3)。 拧紧螺栓至扭矩 9 N·m (80 lb in)

结束:

  1. 连接曲轴箱通气孔或安装曲轴箱通气孔。 请参阅拆解和组装 , "曲轴箱通气孔 - 拆卸和安装" 。

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