The hydraulic pressure power steering system maintenance maintains 1, the steering system and the power changes the principle power steering system (Figure 25) by to change the oil pump, to store the oil pump, the power diverter and the drill tubing is composed.The engine changes the pump through the leather belt transmission actuation to have the fluid press plier###### pressure hydraulic pressure function (to change nut) in the power diverter piston on, causes the screw shaft to follow round the world a nut auxiliary rib strength, this auxiliary size and the function concerns in the piston pressure. The pressure change is in the diverter control transfers the valve to complete.