559C and 579C Knuckleboom Loaders Caterpillar


General Information

Usage:

559C KAS
可以通过监控系统或 Cat® 电子技师(Cat ET)维修工具访问 ECM 诊断系统。 进行系统的故障诊断与排除时还需要机器维修手册中的其他资料。 可能需要的其他手册包括所维修机器的《机器监控系统》、《电气系统示意图》、《零件手册》和《操作和保养手册》。

作为参考,本手册结尾包括一个简化的系统示意图。 有关正在诊断的机器的准确示意,请参阅正在维修的机器的维修手册中的电气系统示意图。

当故障诊断和排除步骤指出需要"修理或更换线束"时,请使用正在维修的机器的电气系统示意图来追查电路。 执行线束接头的导通性检查,确定线束故障位置。 务必检查部件接头上的接地电路。 在任何系统接地和机架接地之间,电阻必须小于 5 欧姆。 大于 5 欧姆的过大接地电阻会导致故障诊断发生错误。

故障诊断和排除过程中,在更换任何部件之前应先检查所有连接。 如果这些连接不清洁、不牢固,则可能会导致永久性电气故障或间歇性电气故障。 检查并确认已将导线完全推入接头中。 在进行其它测试之前,确保所有连接牢固。

如果故障排除中刺穿了导线绝缘层,应及时予以修理。 利用 8T-0065 RTV 硅密封胶 密封损坏的导线。 在密封胶上缠上两层 1P-0810 胶带 。

一个电气部件的故障可能会导致其他部件出现故障。 同样,一个电气部件的故障可能是由其他部件的故障引起的。 在更换部件之前,务必先尝试排除电气系统故障的原因。

当从任何 ECM 上拆卸机器线束时,需使用线束接头中央的单螺钉。

Caterpillar Information System:

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