3508C, 3512C and 3516C Marine Engines Caterpillar


Crankshaft - Remove

Usage:

3512C 2A2

拆卸步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
4C-9832  发动机翻转支架 
138-7576  连杆支架 

开始:

  1. 拆卸摇臂轴组件和推杆。 请参阅拆解和组装, "摇臂轴和推杆 - 拆卸"。

  2. 拆下飞轮壳体。 请参阅拆解和组装, "飞轮壳体 - 拆卸"。

  3. 拆卸前壳体。 请参阅拆解和组装, "壳体(前) - 拆卸"。

  4. 拆下活塞冷却喷嘴。 请参阅拆解和组装, "活塞冷却喷嘴 - 拆卸和安装"。


注意

当活塞和连杆被推离轴箱时,没有拆卸摇臂轴组件和推杆可能会损坏气门。

为避免损坏气门,拆卸曲轴前拆卸摇臂轴组件和推杆。



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。


  1. 使用工具 (A) 将发动机转到水平位置。 发动机可用工具 (A) 或挡块支撑。

    • 3508C 发动机的重量约为 4535 kg (10000 lb)

    • 3512C 和 3512E 发动机的重量约为 6800 kg (15000 lb)

    • 3516C 发动机的重量约为 9100 kg (20000 lb)

    注: 如果从发动机上拆卸活塞和连杆组件,则没必要从曲轴上拆卸配重。



    图 1g01124519

  2. 在配重 (2) 上贴上标记。 从曲轴上拆下螺栓 (1) 和配重 (2)。

    注: 切勿重复使用螺栓 (1)。 用新的螺栓将配重固定到曲轴。



    图 2g01124522

    注: 出于安装目的,对连杆盖和连杆进行编号。

  3. 拆下螺栓 (3 )。 拆卸连杆盖 (4) 并将连杆从曲轴中推出。

    注: 确保曲轴上的轴径没有被连杆擦伤。



    图 3g01124538

  4. 在曲轴 (7) 的每一端都连上工具 (B)。 将适当的起吊设备连接在工具 (B) 上。 3508C 曲轴的重量约为 400 kg (880 lb)。 3512C 和 3512E 曲轴的重量约为 600 kg (1325 lb)。 3516C 曲轴的重量约为 800 kg (1765 lb)

  5. 拆下螺栓 (5) 和主轴承盖 (6)。

  6. 从中心主轴承两侧卸下止推盘 (8)。

  7. 将曲轴 (7) 从缸体上拆下。

  8. 将主轴承上轴瓦从缸体上拆下。

  9. 从连杆上拆下连杆轴承上轴瓦。


    图 4g01124543

  10. 如有必要,从曲轴的每一端拆卸螺栓 (9) 和曲轴齿轮 (10)。

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