欧美性交网_岛国无码一区二区三区_日韩精品色哟哟_欧美熟女色_在线日韩免费_免费看国产黄片_丝袜自慰喷水_久久午夜夜伦鲁鲁片_中文字幕成人网_久久久国产欧美_久久久久涩涩涩_国产精品伦一区二区三区_男人的天堂一区二区三区_欧美一性一交_欧美呦

1. There is a deviation during the assembly of the piston rod and packing box, which causes local mutual friction and should be adjusted in a timely manner;
2. The sealing ring holding spring is too tight and has high friction force, which should be adjusted appropriately;
3. The axial clearance of the sealing ring is too small, and the axial clearance should be adjusted according to the specified requirements;
4. When the fuel supply is insufficient, it should be increased appropriately;
5. The running in of the piston rod and sealing ring is poor, and it should be strengthened during matching research;
6. Impurities mixed in gas and oil should be clean and kept clean.
The above is the cause of overheating of the piston rod.