Subway wheels with the operation of the wear and tear caused by changes in the roundness of the vehicle, the need for repair, but after repair car floor height does not change
镟 round can be how much, change is only millimeter-level, how to see the naked eye
After the wheel operation will be based on the remaining wheel diameter in the two-line suspension (air spring) to add compensation pads. Such as wheel diameter (diameter) 镟 12mm, then the corresponding compensation pads will increase 6mm. It can also be adjusted by adjusting the height of the valve mounting base. (But can not adjust the height of the valve body, because the need for an absolute level of the site of the four corners of the train weighing, commonly known as leveling.
