3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Gear Group (Front)

Usage:

769C 01X



图 1g01376985

(1) 燃油泵驱动齿轮和正时提前装置

(3) 水泵驱动齿轮

(4) 附件驱动齿轮

(7) 油泵驱动齿轮

(2) 凸轮轴齿轮

注: 安装前,先对准 "V" 正时标记。

(5) 惰轮齿轮组件

(B) 新驱动惰轮轴的直径 ... 63.500 ± 0.013 mm (2.5000 ± 0.0005 in)
组装后轴承孔孔径 ... 63.592 ± 0.013 mm (2.5036 ± 0.0005 in) (C) 套筒轴承的安装深度 ... 0.38 ± 0.25 mm (0.015 ± 0.010 in)

注: 安装前,先对准 "V" 正时标记。

(6) 曲轴齿轮

注: 安装前,先对准 "V" 正时标记。

(8) 螺栓的扭矩 ... 55 ± 10 N·m (41 ± 7 lb ft)

(9) 锁紧螺栓的扭矩 ... 55 ± 10 N·m (41 ± 7 lb ft)

(10) 安装止推片,同时使油槽侧朝向惰齿轮组件。

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