3126B Engines for Caterpillar Built Machines Caterpillar


Crankshaft - Install

Usage:

120H 124

安装步骤

表 1
所需工具    
工具     零件号     零件说明     数量    
A     8T-5096     千分表总成     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。



    注意

    确保曲轴主轴承锁片与缸体和曲轴主轴承盖中的槽相互啮合。


    注: 6 号主轴承为止推轴承。

  1. 清理缸体内主轴承的轴承面。 在上部主轴承上涂抹干净的机油。 不要在轴承面的背面涂抹机油。 将上部主轴承安装到缸体内。 确保轴承背面上的凸舌插入缸体内的凹槽中。



    图 1g01184978

  1. 在曲轴轴承的轴颈上涂抹干净的机油。 将适当的起吊设备固定到曲轴 (1) 上。 曲轴 (1) 的重量约为 60 kg (132 lb)。 将曲轴缓慢地装入缸体内。

  1. 清理主轴承盖的轴承面。 将下部主轴承安装到曲轴主轴承盖内。 确保轴承背面上的凸舌插入主轴承盖内的凹槽中。 在下部主轴承上涂抹干净的机油。 不要在轴承面的背面涂抹机油。

  1. 安装曲轴主轴承盖,零件号朝向缸体右侧。 编号应当从发动机的前端开始。 将清洁的机油或 Molylube 涂抹到螺栓螺纹和垫圈上。



    图 2g01028042

  1. 安装主轴承盖 (2) 的螺栓。 将螺栓上紧到 54 ± 7 N·m (40 ± 5 lb ft) 的扭矩。

  1. 将螺栓再转动 90 ± 5度(1/4圈)。

  1. 安装连杆盖 (3) 。 请参阅拆解和组装, "活塞和连杆 - 安装"。

  1. 利用工具 (A) 检查曲轴 (1) 的轴向间隙。 轴向间隙必须为 0.07 至 0.32 mm (0.003 至 0.013 in)。

End By:

  1. 安装前壳体。 请参阅 拆解和组装, "壳体(前) - 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. 安装飞轮壳体。 请参阅 拆解和组装, "飞轮壳体 - 拆卸和安装"。

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