C7 Industrial Engines Caterpillar


Pistons and Connecting Rods - Install

Usage:

C7 JRA

安装步骤

表 1
所需工具    
工具     零件号     零件描述     数量    
A     173-5529     活塞环压缩器     1    
B     4C-5593     防粘结剂     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。


  1. 在活塞、活塞环和缸径上涂抹清洁的发动机机油。



    图 1g00954373

  1. 定位活塞环,使相互之间的端隙相隔 120 度。 通过安装工具 (A) 压缩活塞环。

    注: 安装活塞和连杆,使连杆的锻造编号面向发动机的飞轮端。

  1. 当 1 缸曲轴行程位于下止点时,将活塞和连杆安装在发动机内。 确保正确的活塞和连杆安装在相应的气缸内,并且轴承挡圈凹口应朝向发动机右侧。

  1. 使活塞和连杆与曲轴对齐。 使用软面锤,将活塞轻轻敲入缸径中,直至工具 (A) 离开活塞。



    图 2g01126089



    图 3g01126088

  1. 在连杆 (3) 与曲轴接触前,安装连杆轴承 (4) 的上半部分。 确保轴承锁片与连杆 (3) 中的槽相互啮合。

  1. 在连杆轴承 (4) 上半部分的表面上涂抹干净的发动机机油。 使用软面锤,将活塞轻轻敲入缸径中,同时在曲轴上导入连杆 (3) 。

  1. 在相应连杆盖 (2) 中安装连杆轴承 (4) 的下半部分。 确保轴承锁键与连杆盖 (2) 内的凹槽接合。

  1. 在连杆轴承 (4) 下半部分的表面上涂抹干净的发动机机油。 将连杆轴承盖 (2) 安装在连杆 (3) 上。 确保连杆盖 (2) 的编号与连杆 (3) 的编号匹配。 确保号码在同一侧。

  1. 用工具 (B) 润滑新连杆螺栓。

  1. 安装新螺栓 (1) 。 用 70 ± 5 N·m (52 ± 4 lb ft) 的扭矩拧紧螺栓 (1) 。

  1. 在各只螺栓上作一个指示标记。 将各只螺栓 (1) 额外拧紧 120 ± 5 度(1/3 圈)。

End By:

  1. 安装活塞冷却喷嘴。 请参阅 拆解和组装, "活塞冷却喷嘴 - 拆卸和安装"。
  2. 安装发动机机油泵。 请参阅 拆解和组装, "发动机机油泵 - 安装"。
  3. 安装缸盖。 请参阅 拆解和组装, "缸盖- 安装"。

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