3508C, 3512C and 3516C Marine Engines Caterpillar


Gear Group (Rear) - Install

Usage:

3512C 2A2

安装步骤

表 1
所需工具 
工具  零件号  零件描述  数量 
1P-0520  冲头总成 


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 1g06321170

  1. 定位曲轴齿轮 (13),然后安装 12 个螺栓 (12)。


    图 2g06321167

  2. 定位齿轮轴 (11),然后安装四个螺栓 (10)。

    1. 拧紧四个螺栓 (10) 至扭矩为 140 ± 10 N·m (105 ± 5 lb ft)


    图 3g06321151


    图 4g06321204
    (7) 凸轮轴惰轮。 (9) 轴承。 (E) 81.060 ± 0.010 mm (3.1913 ± 0.0004 inch)。 (F) 1.00 ± 0.25 mm (0.040 ± 0.010 inch)

  3. 使用工具 (A) 和适当的压具在凸轮轴惰齿轮 (7) 内安装轴承。 将轴承 (9) 安装到齿轮 (7) 内深度 (F) 处,如图所示。


    图 5g06321198

  4. 将清洁的机油涂在轴承上,并安装惰轮轴 (6)。

  5. 对轴承 (9) 的内径进行机加工至所示尺寸 (E)。

    注: 孔 (E) 的表面抛光材料必须为 0.8 微米。 节圆直径 (H) 必须必须同心,且千分表的总读数为 0.12 mm (0.005 inch)。 齿轮 (4) 的表面 (G) 必须在孔 (E) 中心的 0.05 mm (0.002 inch) 范围内。



    图 6g06321208

  6. 将清洁的发动机机油放在止推垫圈 (8) 上并安装。


    图 7g06259470

  7. 定位齿轮 (7) 与惰轮轴 (6),然后安装六个螺栓 (5)。

    拧紧六个螺栓 (5) 至扭矩为 240 ± 20 N·m (177 ± 14.8 lb ft)



    图 8g06321213
    (3) 惰轮组。 (4) 轴承。 (A) 75.060 ± 0.010 mm (2.9551 ± 0.0004 inch)。 (B) 1.5 ± 0.5 mm (0.06 ± 0.02 inch)


    图 9g06321115

  8. 使用工具 (A) 和适当的压具在齿轮组 (3) 上安装轴承 (4)。 将轴承 (4) 安装到深度 (B) 处,如图所示。


    图 10g06259447

    注: 将后齿轮组组件安装到曲轴齿轮上时,3516 发动机上没有正时标记。

  9. 在轴承上喷涂清洁的发动机机油并在轴上安装齿轮。 确保齿轮组件和曲轴上的标记与所示发动机的旋转方向一致。

  10. 将清洁的发动机机油涂在齿轮 (3) 上,并将齿轮 (3) 安装到轴 (11) 上。

  11. 安装板 (2) 和四颗螺栓 (1)。

结束:

  1. 拆下飞轮壳体。

  2. 拆卸曲轴后密封件和耐磨衬套。

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