Yueqing Hualong Mechanical Accessories Factory

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Causes of abnormal heating and noise of oil pump

As we all know, the hydraulic system is an overall operation system. The hydraulic oil pump, the heart of the hydraulic system, will be involved in the operation of the system if there is a problem. Today, I will analyze the causes of the failure of the hydraulic oil pump with you.




1、 Abnormal heating of hydraulic oil pump due to poor assembly of hydraulic oil pump:.




(1) The clearance in the hydraulic oil pump is not appropriate during selection.




(2) The assembly quality of the hydraulic oil pump is poor, and the coaxiality of the transmission part does not meet the technical requirements. When the hydraulic oil pump is running, there are other phenomena, such as slack, rough, weak and so on.




(3) The quality of the bearing in the hydraulic oil pump is poor, or it is damaged during assembly, or it is not cleaned during the installation of the hydraulic oil pump, resulting in the poor operation of the hydraulic oil pump.




(4) The lubricating oil drain port passing through the bearing is not unblocked: because the plug of the oil return port is not opened (no pipe is connected), the truck oil pump or the oil passage is not cleaned during installation, resulting in dirt blocking the oil port and blocking the oil drain port.




2、 Hydraulic oil pump heating caused by hydraulic oil pump pipeline failure:.




(1) The oil drain pipe connecting the hydraulic oil pump is flattened or blocked, resulting in failure of oil drain and heating of the oil pump.




(2) The diameter of the oil drain pipe of the hydraulic oil pump is too small to make the hydraulic oil pump discharge oil smoothly and meet the oil drainage requirements.




(3) The small oil suction pipe diameter of the hydraulic oil pump makes the oil suction resistance of the hydraulic oil pump large, unable to absorb oil normally, resulting in the heating of the oil pump.




3、 Abnormal heating of hydraulic oil pump caused by poor oil quality of hydraulic oil pump:.




(1) The characteristics of viscosity and temperature of oil used in hydraulic oil pump are poor, and the viscosity changes greatly during use.




(2) The hydraulic oil used contains a lot of water, resulting in poor lubrication of the hydraulic oil and abnormal heating of the hydraulic oil pump.




(3) The oil in the hydraulic oil pump has not been replaced for a long time, or the hydraulic oil used in the cab oil pump has been seriously polluted, resulting in heating of the hydraulic oil pump.




The noise and abnormal noise of hydraulic oil pump are generally caused by the following reasons:.




(1) The filter or oil suction pipe is partially blocked or the passing area is small. At this time, what we need to do is to clean the filter element or oil suction pipe and replace the appropriate filter or oil suction pipe.




(2) The air hole in the oil tank is blocked, which requires us to clean the air hole.




(3) The oil suction position is too high or the oil level in the oil tank is too low. At this time, we should reduce the installation height of the hydraulic pump or add oil to the oil level line.




(4) The hydraulic oil pump or oil suction pipe is not tightly sealed. At this time, we should check the tightness of the connection and joint surface and tighten it.




(5) Suction bubbles are common in the newly installed oil pump. We need to run without load to remove air. The oil suction pipe is separated from the oil return pipe at a certain distance, so that the oil return pipe orifice can be inserted into a certain depth below the oil level, and the oil return pipe cannot be placed above the oil level.




The company specializes in producing various truck accessories, mainly including cab lifting oil pump, cab lifting oil cylinder, forklift tilt oil cylinder and steering oil cylinder. At present, the company is dominated by European truck accessories, such as Vlvo Volvo truck, Benz Benz truck, Scania skenia truck, man man truck, Renault Truck, Iveco Iveco truck, DAF Duff truck, etc http://www.hualongjx.cn/ 。


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