Driven by a cylinder shaft is rotated so evenly distributed around the cylinder plunger shaft centerline seven rotated through the center of the spring assembly in the column slide shoe against the variable head (or oblique disk). Thus, with the rotation of the cylinder and the piston reciprocates suction and pressure oil to complete the action. When adjusting the flow characteristics of the hydraulic motor, it can simply stop screws to the upper end of the hydraulic motor repair, according to the required flow and pressure range, the adjustable spring set to the initial pressure when traffic began to change to meet the requirements, then the limit Bit screws to the ultimate pressure flow changes do not occur, the relationship between flow rate and pressure change which is determined by the design of the pump itself. 2. The characteristics of the hydraulic pump (1) having a plurality of sealing the space and because changes periodically. Proportional change in the number of the source and amount of change in volume of the hydraulic motor pump output flow per unit of time and within the space, regardless of other factors. (2) the absolute pressure of the liquid in the tank must be identically equal to or greater than the atmospheric pressure. This is a positive displacement pump oil can be inhaled external conditions. So as to ensure normal suction pump, tank must be vented to the atmosphere, or the use of sealed sub tank filling. (3) have a corresponding assignment mechanism. The suction tank and discharge tank separated pump regularly to ensure continuous suction liquid. When the suction valve 5 is closed and 6 open; when the oil pressure, the valve 5 open, 6 closed. Hydraulic motor repair _ crystal create a hydraulic quality assurance (Advisory) _ hydraulic motor from Jinan Jing Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.