CG137-08 and CG137-12 Engines Caterpillar


Pistons and Connecting Rods - Remove and Install

Usage:

CG137-08 FPL

拆卸步骤

表 1
所需工具    
工具     零件号     零件描述     数量    
A     9S-9082     发动机盘车工具     1    

开始:

  1. 拆下缸盖。
  2. 拆下发动机机油泵。
  3. 拆下活塞冷却喷嘴。

  1. 从缸套内表面顶部开始清除积碳凸起。

  1. 使用工具 (A) 转动曲轴,直到两个活塞处于底部中心。



    图 1g01032888

  1. 安装螺栓 (1) 和轴承盖。 推动连杆和活塞,直到活塞环处于缸套外。

    注: 拆卸活塞和连杆时,当心不要损坏缸套和/或曲轴轴颈。




    图 2g01032895

  1. 从缸套上拆下活塞 (2) 和连杆。

  1. 重复步骤 1 至 4,以拆下其余的活塞和连杆。

安装步骤

表 2
所需工具    
工具     零件号     零件描述     数量    
B     5P-3526

149-7180    
活塞环压缩器     1    


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 3g01032680

  1. 将清洁的发动机机油涂抹在缸套孔、活塞环,以及活塞外表面上。

    注: 活塞和连杆安装中,当心不要损坏缸套和/或曲轴轴颈。

  1. 使用工具 (B) 将活塞 (2) 和连杆装进缸套。



    图 4g01096077

    8 缸和 12 缸发动机的典型示例

  1. 将连杆和活塞安装到发动机中时,必须使表面 (X) 面向曲轴主轴承轴颈。 表面 (Y) 必须面向连杆。

    注: 表面 (X) 比表面 (Y) 厚。

    注: 表面 (X) 上加工有倒角,以便于装配曲轴。

  1. 确保活塞冠、活塞裙和活塞杆正确对齐,以获得机油喷管 (3) 所需的间隙。 这样可防止主要发动机故障。 请参阅技术参数, "连杆"和技术参数, "活塞和活塞环"。

    注: 连杆上的标记需要面向冷却喷嘴侧。




    图 5g01032888

  1. 安装螺栓 (1) 和轴承盖。 关于正确的上紧程序,请参阅技术参数, "连杆"。

End By:

  1. 安装活塞冷却喷嘴。
  2. 安装发动机机油泵。
  3. 安装缸盖。

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