3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Crankshaft - Install

Usage:

769C 01X

安装步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
A  138-7573  连杆支架 


注意

保持所有零件清洁无杂质。

杂质会造成快速磨损並縮短部件使用寿命。




    图 1g00585091
    典型示例

  1. 将销 (5) 安装到曲轴中。

    销 (5) 高出曲轴表面的最大突出量 ... 8.4 mm (0.33 inch)

  2. 将定位销 (6) 安装到曲轴中。

    定位销 (6) 高出曲轴表面的突出量 ... 4.1 ± 0.5 mm (0.16 ± 0.02 inch)



    图 2g00585099
    典型示例


    图 3g02630566

  3. 将曲轴齿轮 (4) 加热到最高温度 205 °C (400 °F)。 将齿轮 (4) 安装在曲轴上,使键槽对准定位销 (2)。 正时标记 "V" 应背对曲轴。

  4. 将曲轴齿轮 (4) 安装到曲轴 (3) 上,直到尺寸 (A) 等于 45.54 ± 0.25 mm (1.793 ± 0.010 inch)

  5. 彻底清洁缸体和主轴承盖。

    注: 进行间隙检查之后,安装主轴承并保持其干燥。 为便于最终组装,应在主轴承上涂抹清洁的发动机机油。

  6. 将主轴承上轴瓦安装到缸体中。

    注: 确保主轴承已经安装完毕,以使轴承凸舌能卡进缸体中的凹槽。 主轴承上轴瓦上有油槽和油孔。



    图 4g00585103
    典型示例

  7. 利用前皮带轮螺栓将工具 (A) 安装到曲轴的两端。 将起重机固定到曲轴 (3) 上。


    图 5g00584893
    典型示例

  8. 安装曲轴 (3),使曲轴齿轮 (1) 上的 "V" 标记与惰齿轮 (2) 上的 "V" 标记对准。

结束:

  1. 安装连杆轴承。 请参阅拆解和组装, "连杆轴承 - 安装"。

  2. 安装曲轴主轴承。 请参阅拆解和组装, "曲轴主轴承 - 安装"。

  3. 安装后齿轮总成。 请参阅拆解和组装, "齿轮组件(后)- 安装"。

  4. 安装前壳体。 请参阅拆解和组装, "壳体(前) - 安装"。

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