Most Hydraulic Pumps are damaged prematurely,not because they have reached their design lifespan,but because of hydraulic oil contamination,operating habits,and inadequate maintenance of filter elements.Proper daily maintenance can significantly extend the service life of the main pump and reduce costly repairs.

　　**Hydraulic oil cleaning is the first key.Replace the hydraulic oil and complete set of hydraulic filter elements on time according to the equipment manual.Reduce the maintenance cycle appropriately for high dust mining conditions.Hydraulic oil must be replaced immediately if it enters water,emulsifies,or becomes turbid.Impurities and moisture are the main causes of plunger valve plate strain.

　　Regularly inspect the oil suction pipeline.The aging of the suction pipe,loosening of the clamp,and air leakage can cause air to enter the pump,resulting in cavitation and erosion of the distribution plate.The root cause of many pump damages is air leakage in the intake pipeline.Regularly check the oil drain pipe,and if there is an abnormal increase in the return oil,it is a warning of pump wear.

　　Try to avoid long-term rough overloading and frequent slamming of the controller in daily operations.Long term full load pressure excavation,continuous high-pressure impact of the pump,accelerates internal component fatigue.After starting the chiller,idle and preheat it,and then perform a heavy load composite action when the hydraulic oil temperature rises.

　　Daily inspection:Pay attention to whether the main pump has abnormal noise,abnormal high temperature of the pump body,and joint leakage.If there are signs of slowing down or stalling,promptly check the pressure and flow rate,conduct early maintenance,and do not work with problems for a long time.

　　After repairing hydraulic pumps,motors,and valve components,it is necessary to clean the oil tank pipelines,replace all filter elements,and remove any metal debris from the system.Do not mix different grades of inferior hydraulic oil.

　　Good maintenance habits can achieve a service life of tens of thousands of hours for hydraulic pumps.Prevention is much cheaper than maintenance costs,reducing machine downtime and overall equipment maintenance costs.