793B Off-Highway Truck Air System and Brakes Caterpillar


Traction Control Valve

Usage:

793B 1HL



图 1g00779292



图 2g00779293

剖面 A-A

测试信息

供气压力 ... 3862 ± 103 kPa (560 ± 15 psi)

制动器处于 OFF(断开)位置时的最小控制压力 ... 2470 kPa (358 psi)

任意一个制动器处于 ON(接通)位置时的最小控制压力 ... 1135 kPa (165 psi)

有关更多信息,请参阅维修手册, SENR2986, "自动电子牵引力辅助系统(牵引力控制系统)"。

(1) 9G-9988 电磁阀总成 (牵引力控制选择器)

标称电压 ... 24 VDC
负载 ... 连续
25° ± 5°C (77° ± 9°F) 时的电阻 ... 24.9 ± 0.4 欧姆
安装扭矩 ... 30 ± 5 N·m (22 ± 4 lb ft)
螺母的扭矩 ... 14 ± 2 N·m (125 ± 18 lb in)

注: 将线圈沿水平方向定位在阀中。 线圈不应低于芯组件。 请参阅插图 1。

(2) 将板定位在垫圈下方。

(3) 3T-0062 电磁阀总成 (牵引力控制比例)

标称电压 ... 12 VDC
25 °C (77 °F) 时的电阻 ... 16 欧姆

注: 电磁阀不可调整且不可维修。

(4) 两个螺栓的扭矩 ... 50 ± 10 N·m (37 ± 7 lb ft)

(5) 球阀必须抵着镶圈落座以便形成一个密封表面。

(6) 9G-9227 弹簧

在试验力下的长度 ... 65.99 mm (2.60 in)
试验力 ... 261 ± 21 N (58.7 ± 4.7 lb)
试验后的自由长度 ... 82.25 mm (3.24 in)
外径 ... 27.05 mm (1.07 in)

(7) 9G-9226 弹簧

在试验力下的长度 ... 25.55 mm (1.01 in)
试验力 ... 40.3 ± 2.0 N (9.06 ± 0.44 lb)
试验后的自由长度 ... 48.05 mm (1.89 in)
外径 ... 21.18 mm (0.834 in)

(8) 3T-9836 弹簧 ((滑阀内的))

在试验力下的长度 ... 10.78 mm (0.42 in)
试验力 ... 2.22 ± 0.18 N (0.50 ± 0.04 lb)
试验后的自由长度 ... 20.94 mm (0.82 in)
外径 ... 7.62 mm (0.30 in)

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