773E Off-Highway Truck and 775E Quarry Truck Automatic Lubrication System Caterpillar


Electrical System - Test

Usage:

773E ASK


图 1g00293536
电子监控系统(EMS)自动润滑接线图
(1) 插座
(2) 插头
(3) 插座
(4) 插头

电磁阀检查

  1. 将插头 (4) 从插座 (3) 上拔下。 将万用表旋钮设定到 200 欧姆档位。

  2. 测量插头 (4) 上插脚 1 和 插孔 2 间的电阻。

  3. 电阻测量值应当约为 40 欧姆。 如果电阻并非 40 欧姆,则电磁阀损坏。

  4. 更换电磁阀。 重新连接部件。

电源检查

此检查针对于配有电子监控系统(EMS)的卡车。

  1. 将插座 (1) 从插头 (2) 上拔下。 将发动机启动开关转到 ON 位置。 将万用表旋钮设定到 200 DCV 档位。

  2. 测量插座 (1) 上插孔 1 和插脚 2 间的电压。

  3. 测量电压应为 24 伏。 如果电压并非 24 伏,则检查保险丝和从保险丝到插座 (1) 的导线。

  4. 将发动机起动开关转到 OFF 位置后重新连接部件。

定时器检查

  1. 将插座 (3) 从插头 (4) 上拔下。 将万用表旋钮设定到 200 DCV 档位。

  2. 监测插座 (3) 上插孔 1 和插脚 2 间的电压。 将发动机启动开关转到 ON 位置。

  3. 检查发动机起动开关转到 ON 位置后的电压。 等待 10 分钟。 测量电压应为 24 伏。 如果电压并非 24 伏,则检查插座 (1) 和插座 (3) 间的导线。 如果导线没问题,则表明定时器损坏。

  4. 将发动机起动开关转到断开位置。 更换定时器。 重新连接部件。

Caterpillar Information System:

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