3500 Engines for Caterpillar Built Generator Sets Caterpillar


Gear Group (Rear)

Usage:

3512 1LM



图 1g00838735

典型示例




图 2g00838736

(1) 凸轮轴驱动齿轮

(2) 板

(3) 螺栓

按照以下步骤拧紧凸轮轴驱动齿轮的螺栓。

    注: 在组装前确保凸轮轴端锥和凸轮轴齿轮的锥孔清洁、干燥,无残渣非常重要。

  1. 拧紧凸轮轴齿轮的固定螺栓。

    扭矩 ... 360 N·m (265 lb ft)

  1. 在凸轮轴齿轮的螺栓头处画一条垂直线。 请参考图 3。



    图 3g01226674

    垂直线

  1. 用冲头顶住凸轮轴齿轮固定板。 用锤子敲击冲头 3 到 4 次。

  1. 再次拧紧凸轮轴齿轮的固定螺栓。

    扭矩 ... 360 N·m (265 lb ft)




    图 4g01226685

  1. 重复步骤 3 和步骤 4,直到螺栓上的标记转过至少 90 度。 请参考图 4。

(4) 凸轮轴惰轮齿轮

(5) 螺栓

扭矩 ... 240 ± 20 N·m (175 ± 15 lb ft)

(6) 轴

将轴承装至齿轮内后必须将轴承加工至规定尺寸。
直径 ... 81.000 ± 0.010 mm (3.1890 ± 0.0004 in)
以下数值为经过加工的轴承孔孔径。 ... 81.060 ± 0.010 mm (3.1913 ± 0.0004 in)
最大粗糙度平均值 (Ra) ... 0.8 微米 (32 微英寸)

(7) 惰轮齿轮组

(8) 轴

将轴承装至齿轮内后必须将轴承加工至规定尺寸。
直径 ... 74.990 ± 0.010 mm (2.9524 ± 0.0004 in)
以下数值为经过加工的轴承孔孔径。 ... 75.060 ± 0.010 mm (2.9551 ± 0.0004 in)
最大粗糙度平均值 (Ra) ... 0.8 微米 (32 微英寸)

(9) 螺栓

扭矩 ... 140 ± 10 N·m (105 ± 5 lb ft)

(10) 板

(11) 凸轮轴驱动齿轮




图 5g00838740

(12) 定位标记

惰轮齿轮上的标记必须和曲轴齿轮上的标记对准。

(13) 曲轴齿轮

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