793D Off-Highway Truck Power Train Caterpillar


Solenoid Valve - Test

Usage:

793D FDB

------ WARNING! ------

机器突然移动,会造成人员伤亡。

机器突然移动或释放气压或油压,可能对机器上或机器附近的人员造成伤害。

在测试和调整任何空气系统或液压系统之前,为防止可能的伤害,执行测试和调整, "概述"部分的程序。


这项检查确定是否存在下列情况:

  • 电信号到达电磁阀。

  • 电磁阀电气启动。

步骤




    图 1g00421143

    (1) 升档电磁阀

    (2) 降档电磁阀

    (3) 锁止离合器电磁阀

  1. 断开升档电磁阀 (1) 、降档电磁阀 (2) 和锁定离合器电磁阀 (3) 的电气线束。

  1. 变速箱控制装置必须在空档,变速箱旋转选档器滑阀必须在空档 -1。

  1. 接通发动机起动开关。 不要启动发动机。 这会向降档电磁阀的电气线束提供 +24 伏电压。

  1. 将电气线束从降档电磁阀 (2) 简单连接至锁定离合器电磁阀 (3) 。

  1. 任何时候当电气线束接触到电磁阀时,必须感觉到或者听到咔嗒声或者嗡嗡声。

  1. 将电气线束从降档电磁阀 (2) 简单连接至升档电磁阀 (1) 。

  1. 任何时候当电气线束接触到电磁阀时,必须感觉到或者听到咔嗒声或者嗡嗡声。

  1. 将电气线束从降档电磁阀 (2) 简单连接至降档电磁阀 (2) 。

  1. 任何时候当电气线束接触到电磁阀时,必须感觉到或者听到咔嗒声或者嗡嗡声。

问题:没有感觉到或者听到咔嗒声或者嗡嗡声。

可能的原因

  • 电磁阀损坏

  • 连接电磁阀的导线或线束断裂

Caterpillar Information System:

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