Each piston disassembled and polished, each nut and washer cleaned or replaced, accounted for.
每个活塞都要拆下来并且打磨，每个螺母和垫圈都要清洗或更换，并且一个都不能少。
2
This paper analyses the reason of piston blind nut of air compressor lose efficacy, and intronduces the method to prevent piston blind nut lose efficacy.
分析空气压缩机活塞帽脱扣原因 ，并介绍一种防止脱扣的方法。
3
The utility model has the advantages of that: the piston in the gas cylinder becomes a part of the whole of piston-nut and spline shaft;