3408E and 3412E Engines for Caterpillar Built Machines Caterpillar


Unit Injector Hydraulic Pump

Usage:

769C 01X



图 1g01557933

顶视图

(1) 螺栓的扭矩 ... 10.0 ± 0.2 N·m (90 ± 2 lb in)

(2) 4 只螺栓的扭矩 ... 7.45 ± 0.65 N·m (65 ± 6 lb in)

(3) 螺塞的扭矩 ... 7.45 ± 0.65 N·m (65 ± 6 lb in)

(4) 拆下泵顶部的螺塞。 向泵曲轴箱加注清洁发动机机油 泵曲轴箱可容下约 0.75 L (0.8 qt) 的发动机机油。

注: 用清洁发动机机油稍微润滑 O 形密封圈的孔。

(5) 压力传感器总成的扭矩 ... 10 ± 2 N·m (90 ± 18 lb in)

注: 用清洁发动机机油稍微润滑 O 形密封圈的孔。

(6) 温度传感器总成的扭矩 ... 20 ± 3 N·m (175 ± 27 lb in)




图 2g01557975

注: 提供一个可承受感载压力为 5.4 ± 0.6 kPa (1.0 ± 0.1 psi) 负荷的适当螺塞。

(7) 螺塞扭矩 ... 25 ± 3 N·m (220 ± 27 lb in)

(8) 螺塞的扭矩 ... 15.5 ± 0.5 N·m (135 ± 4 lb in)

注: 组装前,用要密封的润滑剂润滑喷油驱动压力控制阀 (9) 的密封。 喷油驱动压力控制阀的线圈和阀必须配套组装。

(9) 喷油驱动压力控制阀的扭矩 ... 50 ± 5 N·m (37 ± 4 lb ft)

(10) 螺母的最终安装扭矩 ... 5.5 ± 1.5 N·m (50 ± 13 lb in)

(11) 8 只螺栓的扭矩 ... 20 ± 1 N·m (175 ± 9 lb in)

(12) 11 只螺栓的扭矩 ... 27.5 ± 2.5 N·m (245 ± 22 lb in)

(13) 螺塞的扭矩 ... 12.25 ± 0.15 N·m (110 ± 1 lb in)

(14) 4 只螺栓的扭矩 ... 16 ± 1 N·m (140 ± 9 lb in)

(15) 螺母扭矩 ... 140 ± 14 N·m (105 ± 10 lb ft)

(16) 螺塞的扭矩 ... 10.0 ± 0.2 N·m (90 ± 2 lb in)

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