3612 and 3616 Engines Caterpillar


Gear Group (Rear)

Usage:

3616 1PD



图 1g00483155

(1) 凸轮轴驱动齿轮




图 2g01042492

(2) 惰轮

凸轮轴驱动齿轮和惰轮之间的齿隙 ... 0.160 到 0.795 mm (0.0063 到 0.0313 in)
轴承孔径 ... 150 ± 0.02 mm (5.905 ± 0.0008 in) (A) 基座直径。 ... 160 ± 0.02 mm (6.299 ± 0.0008 in) (B) 齿轮孔中安装轴承的深度 ... 3.0 ± 0.5 mm (0.118 ± 0.02 in) (C) 由齿轮基座直径轴心确定的轴承孔的径向跳动 ... 0.13 mm (0.0051 in) (D) 加工后轴承孔的内径 ... 150.002 ± .020 mm (5.9056 ± 0.0008 in) (E) 加工后轴承孔的内径 ... 0.8 微米

(3) 小组合惰轮

惰轮和小组合惰轮之间的齿隙 ... 0.067 到 0.778 mm (0.0026 到 0.0306 in)

(4) 惰轮齿轮

(5) 将惰轮连接到小组合惰轮的螺栓的扭矩 ... 135 ± 20 N·m (100 ± 15 lb ft)

(6) 曲轴齿轮

惰轮与曲轴之间的齿隙 ... 0.216 到 0.949 mm (0.0085 到 0.0374 in)



图 3g00483156

(7) 惰轮轴的安装螺栓

使用以下步骤来拧紧惰轮轴的安装螺栓。




    图 4g00483157

  1. 使用以下顺序来拧紧和转动螺栓。

    两条带有 8 种螺栓形式的惰轮轴 ... 1-5-3-7-2-6-4-8

    一条带有 10 种螺栓形式的惰轮轴 ... 1-6-3-8-5-10-7-2-9-4

  1. 拧紧螺栓。

    扭矩 ... 160 ± 16 N·m (120 ± 12 lb ft)

  1. 将各螺栓额外拧紧 45 ± 5 度。

(8) 锁止板和螺栓

(9) 固定凸轮轴驱动齿轮的螺栓

使用以下步骤来安装凸轮轴驱动齿轮:

注: 使用手动盘车总成来旋转发动机。 旋转曲轴前必须先预润滑发动机,以便执行检修工作。 如果配合面干燥,在预润滑前旋转曲轴则可能会导致曲轴轴承损坏。

  1. 旋转发动机,使 1 号气缸处于压缩行程的上止点。 安装凸轮轴正时销。


    注意

    如果错过曲轴正时销位置,请勿反向转动飞轮来安装曲轴正时销。 如果错过曲轴正时销位置,应重复步骤 1。


  1. 安装凸轮轴正时销。

  1. 将凸轮轴驱动齿轮 (1) 放置在凸轮轴上。 安装隔板和螺栓,并用手拧紧。

    注: 确保齿轮锥面和凸轮轴锥面清洁和干燥。 确保齿轮锥面和凸轮轴锥面上没有污垢、生锈和润滑剂。

  1. 为防止曲轴转动,接合手动盘车总成。 拧紧锁止导向。

    扭矩 ... 270 ± 25 N·m (200 ± 18 lb ft)

  1. 在螺栓的螺纹和安装面上涂抹 4C-5591 防粘结剂 。 使用扭矩倍增器来拧紧凸轮轴螺栓。

    扭矩 ... 2000 ± 275 N·m (1480 ± 200 lb ft)

  1. 用锤子敲击隔板,以便使齿轮锥面落座在凸轮轴上。 重复进行步骤5。

  1. 重复步骤 6,制动螺栓扭矩不再发生变化。

  1. 松开手动盘车总成上的锁止导向。 通过安装正时销来确认曲轴与凸轮轴的相对位置。 如果两个正时销都不能安装,松开螺栓和凸轮轴驱动齿轮。 重复安装凸轮轴驱动齿轮的步骤。

(10) 惰轮轴的外径 ... 149.850 ± 0.020 mm (5.8996 ± 0.0008 in)

(11) 惰轮止推垫圈的厚度 ... 9.60 ± 0.05 mm (0.378 ± 0.002 in)

(12) 惰轮轴

小组合惰轮轴的外径 ... 105.860 ± 0.020 mm (4.1677 ± 0.0008 in)



图 5g00483159

(13) 将小组合惰轮 (3) 中的轴承安装至以下深度。 ... 3.0 ± 0.5 mm (0.12 ± 0.02 in)

(14) 小组合惰轮的轴承

小组合惰轮 (3) 的轴承的外径 ... 114.171 ± 0.026 mm (4.4949 ± 0.0010 in)
齿轮轴承孔 ... 114.000 ± 0.020 mm (4.4882 ± 0.0008 in)



图 6g00483240

(15) 将惰轮 (2) 中的轴承安装至以下深度。 ... 3.0 ± 0.5 mm (0.12 ± 0.02 in)

(16) 惰轮轴承

惰轮 (2) 轴承的内径 ... 150.002 ± 0.020 mm (5.9056 ± 0.0008 in)
齿轮轴承孔 ... 160.000 ± 0.020 mm (6.2992 ± 0.0008 in)

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