3524B Engines for 797 and 797B Off-Highway Trucks Caterpillar


Charging System

Usage:

3524B 1AW
定期检查蓄电池的充电情况就可以知道充电系统是否工作正常。 如果蓄电池经常充电不足或者需要大量补水时,就需要进行调整。 大量补水意味着每一个蓄电池单元每周或每 100 个工作小时需要补水超过一盎司以上。

如有可能尽量在发动机上进行充马达和调压器的测试,使用系统固有的线路和部件。 从发动机上拆下来进行测试或在测试台进行测试可以试验充马达和调压器的工作状况。 这种测试可以指出所需进行的修理。 修理后,再进行测试以便验证部件经修理已恢复到原来正常的工作状态。

有关测试充电系统应采用的正确步骤,请参阅专门说明书, REHS0354, "充电系统故障检查与排除"。 本出版物也包含那些测试充电系统时会用到的规格。

要检查交流发电机的输出是否正确,请参阅技术规格模块。

在发动机上进行测试之前,必须按照以下步骤对充电系统和蓄电池进行检查。

  1. 蓄电池必须至少达到完全充电的75%(1.225 Sp Gr)。 蓄电池必须固定在位。 蓄电池固定夹一定不能向蓄电池施加太大的应力。

  2. 蓄电池、起动马达和发动机接地之间的电缆规格必须正确。 导线和电缆一定不能有锈蚀。 导线和电缆必须安装电缆支撑卡箍,以防止对蓄电池接头(端子)施加应力。

  3. 与充电电路直接有关的导线、接头、开关和仪表板上的仪表必须提供正确的电路控制。

  4. 检查充马达的驱动部件,以确保这些部件上没有润滑脂和机油。 确保这些驱动部件能使充马达正常运转。

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