In the main circuit safety valve, overload valve and other accessories intact under the premise of the inlet pipe and motor interfaces sealed (no oil spills) pump repair, motor positive, the maximum pressure oil passage when measuring reverse; and turned on the motor line, the load pressure when measured; last measured value is compared with its technical requirements to determine the fault location. (2) Because the pump flow rate are inadequate or low pressure drop causes the motor output, torque and speed while reducing, so the determination of the flow rate should be synchronized with the measured pressure. (3) Check the assignment shaft and rotor bore clearance is within the allowable range (see table) pump, check the assignment and the cylinder bore axis rotation center line are the same hydraulic pump sales, such as exceeding the allowable value should be re-assembled. If there is assignment shaft and the rotor hole with the gap of more than 0.6mm, or with orifices along the circumferential groove appeared to pull the rotor; the plunger and the rotor with the gap exceeds 0.05mm, the wheel axle and the chute side with the gap of more than 0.05mm, all inside cause low speed high torque curve motor rotation weakness. If the two travel motors are not synchronized, then it will track deviation. (4) The swash plate type axial piston motors, the long-term high-speed operation, the motor output shaft support bearing clearance increases, the axial positioning large gap over the disc spring compensation value; cylinder (rotor) and with flow cross-examination because the center location pole 4 disc spring is not normally the rotor cylinder is pressed against the valve plate (disc spring fatigue strength decreases when stretch down in the cold state of the motor can operate normally, under the hot deformed disc spring will increase), resulting in assignment capacity decreased, resulting in weak motor operation. When the rotor and the cylinder bore clearance exceeds 0.05mm, or when more than normal wear and tear, will cause motor weakness and running slow. A2F Series Bent Axis piston dosing pumps, detailed parameters piston motor, A2F series of hydraulic motors, A2F series hydraulic motor manufacturers, A2F series of hydraulic motors manual hydraulic motor can be divided into high and low speed hydraulic motor two categories Features 1) The fuel outlet pressure of the hydraulic motor is slightly greater than atmospheric pressure, into the same oil outlet diameter. 2) hydraulic motor often requires a positive, reverse, so the internal structure should have symmetry. 3) In determining the form of a hydraulic motor bearing hydraulic pump maintenance, should be guaranteed to work properly over a wide speed range. 4) pump in the structure must ensure self-priming capability, the hydraulic motor at start must ensure a good seal. 5) hydraulic motors generally require leakage oil port. 6) In order to improve the starting and operating performance of the hydraulic motor, the required torque ripple small, internal friction is small hydraulic pump parts, crystal creating hydraulic (certification), the hydraulic pump 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.