C4.4 Industrial Engine Caterpillar


Gear Group (Front)

Usage:

C4.4 444



图 1g01335907

齿轮系

(1) 燃油喷油泵驱动齿轮

将螺母拧紧至以下扭矩。 ... 25 N·m (18 lb ft)
松开喷油泵轴上的锁。 将螺母上紧到以下扭矩。 ... 90 N·m (66 lb ft)
齿数 ... 68

注: 关于喷油泵轴的锁定扭矩,请参阅规格, "喷油泵"。

(2) 凸轮轴齿轮

将凸轮轴齿轮的螺栓拧紧至下述扭矩。 ... 95 N·m (70 lb ft)
齿数 ... 68

(3) 惰轮和毂

将惰轮的螺栓拧紧至下述扭矩。 ... 44 N·m (33 lb ft)
惰轮和分离式轴承组件的宽度 ... 30.165 至 30.135 mm (1.1876 至 1.1864 in)
带法兰的惰轮轴承的内径 ... 50.797 至 50.818 mm (1.9999 至 2.0007 in)
惰轮毂的外径 ... 50.716 至 50.737 mm (1.9967 至 1.9975 in)
毂上惰轮轴承的间隙 ... 0.06 至 0.102 mm (0.0024 至 0.0040 in)
惰轮轴向间隙 ... 0.10 至 0.205 mm (0.0039 至 0.0081 in)
最大容许轴向间隙 ... 0.38 mm (0.015 in)
带滚柱轴承的惰轮端隙 ... 0.24 至 0.954 mm (0.0094 至 0.0376 in)
齿数 ... 73



图 2g00996214

机油泵的齿轮传动系

(4) 曲轴齿轮

曲轴齿轮的孔径 ... 51.00 至 51.03 mm (2.0079 至 2.0091 in)
曲轴毂的外径 ... 51.021 至 51.002 mm (2.0087 至 2.0079 in)
曲轴上齿轮的间隙 ... −0.021 至 0.028 mm (−0.0008 至 0.0011 in)
齿数 ... 34

(5) 机油泵惰轮

机油泵惰轮轴承内径 ... 16.012 至 16.038 mm (0.6304 至 0.6314 in)
机油泵惰轮轴外径 ... 15.966 至 15.984 mm (0.6286 至 0.6293 in)
轴上的机油泵惰轮轴承的间隙 ... 0.028 至 0.072 mm (0.0011 至 0.0028 in)
机油泵惰轮的轴向间隙 ... 0.050 至 0.275 mm (0.0019 至 0.0108 in)

(6) 机油泵齿轮

机油泵齿轮的齿数 ... 17

齿隙值

惰轮 (5) 与机油泵驱动齿轮 (6) 之间的齿隙 ... 0.05 至 0.14 mm (0.0020 至 0.0055 in)
机油泵惰轮 (5) 与曲轴齿轮 (4) 之间的齿隙 ... 0.8 至 0.23 mm (0.0315 至 0.0091 in)
惰轮 (3) 与曲轴齿轮 (4) 之间的齿隙 ... 0.05 至 0.015 mm (0.0020 至 0.0006 in)
凸轮轴齿轮 (2) 与惰轮 (3) 之间的齿隙 ... 0.05 至 0.15 mm (0.0020 至 0.0059 in)
喷油泵齿轮 (1) 与惰轮 (3) 之间的齿隙 ... 0.05 至 0.15 mm (0.0020 至 0.0059 in)
水泵齿轮(未显示)与喷油泵齿轮 (1) 之间的齿隙 ... 0.05 至 0.15 mm (0.0020 至 0.0059 in)
动力输出装置(如果配置)与惰轮 (3) 之间的齿隙 ... 0.05 至 0.250 mm (0.0020 至 0.0098 in)

Caterpillar Information System:

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