In the tight wire tensioner parts prone to failure hydraulic station, in addition to the hydraulic pump, in addition to the sintering of the pump, where there are problems, such as valve burnout or adjustment of the place must be adjusted, oil from the oil pipe leakage or blocked. Whether ordinary or bad are not damaged, to repair it, to understand the schematic diagram, if not, the waste of explosion-proof winch with winch should be DC, AC conversion resistor. AC frequency resistance winch of the safety tensioner hydraulic station adjustment all the same. Winch adjustment method is currently the use of electro-hydraulic proportional valve for adjustment method. That is, the electric control system issues a control voltage or current proportional valve, control voltage (flow) and system pressure is roughly linear, the greater the voltage (flow), the greater the pressure of the hydraulic station.