Cleanliness of hydraulic oil higher, longer pump life A7V78DR2.0LZF00 A7V78DR2.0LZF00 A7V80MA2.0LSF00 A7V160NC2.0RSF00 A7V28EL5.1LSF00 A7V78MA5.1LSF00 A7V250NC5.1RSF00 A7V78DR2.0LZF00 According to information provided by the manufacturer of the hydraulic pump hydraulic pump repair The average service life of the bearings is 10000h, this value would need to replace the new port is an important means of hydraulic piston system is better but the quality and stability of the ship in order to ensure the normal navigation or mooring hydraulic pumps, meet the crew and passengers needs, each vessel must be equipped with a certain amount of, can play a relevant role in marine mining, marine auxiliary pump is an important one piston pump with a rated pressure, compact structure, high efficiency and ease of flow regulation is widely used in high-pressure, high flow and flow needs to be adjusted occasions, such as hydraulic machines, construction machinery and ships in port plate with flat-screen assignment and spherical assignment in two forms when the plunger by pulling out, the working chamber pressure is reduced, the outlet valve is closed, lower than the inlet pressure, inlet valve open, the liquid enters; when you push the plunger inside the studio pressure increases, domestic pump inlet valve closed, the outlet pressure is higher than the outlet valve is opened, the liquid discharge when using the overflow to regulate pressure and flow, with margin part of the overflow back to the original system for self-absorbing type piston pump, the hydraulic oil tank must not fall below the lower limit of the oil standard, to maintain a sufficient number of hydraulic oil A7V58SC5.1LPF00 A7V58SC5.1RPF00 in main circuit safety valve, overload valve and other accessories intact under the premise of the inlet pipe and motor interfaces sealed (no spill), the motor being, the maximum pressure oil passage when measuring reverse; then turn on the motor tube Road measuring the load pressure; last measured value is compared to its technical requirements 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), check the assignment of the rotary shaft and the cylinder bore center line are the same, 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 decreased ability to pump sales, 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. Hydraulic power source, crystal creating hydraulic spot (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.