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ЭР9系列电动车组牵引齿轮箱振动诊断已被列入了 1997年技术保养- 3和小修 - 1的工艺过程中。在小修 - 1时要诊断所有的列车轮对。在技术保养 - 3作业过程中根据乘务组的意见建立了诊断实验室。而在技术保养 - 3作业过程中轮对转动的周期性变化则取决于其缺陷发展的情况。高尔
ЭР 9 series EMUs traction gearbox vibration diagnosis has been included in the 1997 technical maintenance - 3 and minor repair - 1 process. In the minor repair - 1:00 to diagnose all the train wheel. In the technical maintenance - 3 homework process based on the views of the crew established a diagnostic laboratory. However, the cyclical changes of wheel rotation during technical maintenance - 3 operations depend on the development of defects. Gower