C3.4B Engines for Caterpillar Built Machines Caterpillar


Connecting Rod Bearings - Remove - Connecting rods in position

Usage:

CD-44B 398

拆卸步骤

开始:

  1. 拆下发动机机油吸油管。 有关正确步骤,请参阅拆解和装配, "发动机油底壳 - 拆卸和安装"。
  2. 如有必要,拆下平衡器。 有关正确步骤,请参阅拆解和装配, "平衡器 - 拆卸"。


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。



注意

废弃所有旧的连杆紧固件。


注: 如果需要更换所有连杆轴承,可以同时在两个气缸上进行本程序。 本程序可在下列气缸配对上同时进行。 1 和 4 然后 2 和 3。 开始下一对连杆上的拆卸步骤前,确保一对连杆上的安装步骤已完成。




    图 1g03005637

    (X) 识别标记




    图 2g01341322

  1. 连杆和连杆盖在位置 (X) 应该有蚀刻的编号。 连杆和连杆盖上的编号必须相互匹配。 如有必要,在连杆 (5) 和连杆盖 (2) 上作一个临时标记来识别气缸编号。

    注: 不要在断面分裂式连杆上冲出识别标记。 不要在断面分裂式连杆上压印识别标记。

  1. 旋转曲轴,使所需的连杆处于下止点。 拆下螺栓 (1) 并弃置螺栓。

  1. 将连杆盖 (2) 从连杆 (5) 上拆下。

  1. 将下轴瓦 (3) 从连杆盖 (2) 上拆下。 保持轴瓦与连杆盖一体。

  1. 小心地将连杆 (5) 推入缸孔中,直到连杆 (5) 离开曲轴。 将上轴瓦 (4) 从连杆上拆下。 保持轴瓦一体。

    注: 不要推压连杆的断面分裂面,否则会导致损坏。 不要使连杆接触活塞冷却喷嘴。

  1. 重复步骤 1 到步骤 5,拆卸其余的轴瓦。

    注: 放置断面分裂式连杆时必须要安装连杆盖。 在完成轴瓦的拆卸程序后,立即进行安装程序。 有关正确的步骤,请参阅拆解和组装, "连杆轴承 - 安装"。

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