The upper winding machine oil pressure station failure tensioner manufacturer analysis and processing methods 2.1 wire tensioner leakage and long-term use of oil pressure instability after the safety brake device between the sets of oil circuits, and between the valve and set the oil circuit a large number of leaks, and oil pressure drop and can not open the valve is the reason for the screw between them loose, tighten the screw can eliminate the fault; oil pressure instability lies in whether the air should be mixed into the hydraulic system, exclude air, or poor current filtration of the coil of the electric oil pressure regulator, vibration up and down the coil of the jig tensioner, unstable oil pressure, increase the electrolytic capacitor and strengthen the filtration. In other words, the reason for 2.2 oil pressure value lies in the inhalation of air in the system, whether the oil in the tank has many bubbles, or due to the large air leakage in the solenoid switching valve, so the treatment is as follows:Check whether the suction port of the oil pump is leaking