3176C and 3196 Engines For Caterpillar Built Machines Caterpillar


Pistons and Connecting Rods - Install

Usage:

140H 126

安装步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
161-4163(1)

161-4164(2)  
活塞环压缩器 
(1) 用于 C-10 发动机
(2) 用于 C-12 发动机


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. 将清洁的发动机机油涂抹在下列项目上:活塞, 活塞环 和 缸径。

  2. 通过安装工具 (A) 压缩活塞环。

  3. 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。

    注: 在某些发动机上,可能在活塞顶部上冲压有 "FRONT"(前)字样。 安装活塞时,确保 "FRONT"(前)字朝向发动机的前部。 放入相应的气缸中时,连杆上刻的编号必须朝向发动机右侧。



    图 1g01064123

  4. 使活塞和连杆 (3) 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。

  5. 在连杆与曲轴接触前,安装连杆轴承 (4) 的上半部分。 确保轴承锁键与连杆内的定位槽接合。

  6. 在连杆轴承 (4) 上半部分的表面上涂抹清洁的发动机机油。 使用软锤将活塞轻轻敲入缸孔,同时引导连杆安装到曲轴上。


    图 2g01064122

  7. 将连杆轴承的下半部分放在相应的连杆盖 (2) 中。 确保轴承锁键与连杆盖 (2) 内的凹槽接合。

  8. 在连杆轴承下半部分的表面上涂抹干净的发动机机油。 将连杆盖 (2) 安装到连杆上。 确保连杆盖 (2) 的编号与连杆的编号匹配。 确保号码在同一侧。

  9. 安装连杆盖螺栓 (1)。 拧紧螺栓至扭矩为 130 ± 7 N·m (95 ± 5 lb ft)

  10. 在每个螺栓头上标上标记。 将每根螺栓再拧紧 60 ± 5 度(1/6圈)。

  11. 对于其余的活塞和连杆,重复步骤 1 至 10。

结束:

  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. 安装发动机油底壳。 请参阅拆解和组装, "发动机油底壳 - 拆卸和安装"。

  3. 安装缸盖。 请参阅拆解和组装, "缸盖 - 安装"。

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