How to replace the plunger pump of a hydraulic piston pump? Disassemble the bearing and test it. If scratches or discoloration are found on the surface of the roller, replace it. When replacing bearings, the English letters and types of the bearings should be left. For plunger pump bearings, large load capacity bearings are mostly used. If the original manufacturer and standard products are purchased, it is assumed that another brand will be replaced. It is recommended to consult personnel with experience in bearings to check the table for replacement, in order to adhere to the bearing and load capacity.The application and repair methods of hydraulic pump plug pump: This article mainly introduces the application and repair methods of hydraulic pump plug pump, focusing on the straight axis inclined disc plunger pump. 1. Oil supply method of hydraulic pumpThere are two types of direct axis inclined disc piston pumps: pressure oil supply type and self suction type. Pressure oil supply hydraulic pumps mostly use oil tanks with air pressure, and some hydraulic pumps have their own oil replenishment pumps to supply pressure oil to the hydraulic pump inlet. The self-priming hydraulic pump has strong self-priming ability and does not require external oil supply. The hydraulic oil tank with pneumatic oil supply can only operate the machinery after the hydraulic tank reaches the operating pressure after each start of the machine. When there is a lack of air pressure in the hydraulic oil tank, it will act as a machine and cause the sliding rod inside the hydraulic pump to detach, resulting in abnormal wear of the return plate and pressure plate inside the pump. Select a plunger pump with a supplementary oil pump for oil supply. After use, the operator needs to check the plunger pump 1-2 times a day to see if the hydraulic pump is working normally. If it is found that the speed of the hydraulic cylinder has decreased or the car is stuck, the oil replenishment pump should be checked to see if the internal gear pump is too empty.2. Bearings for hydraulic pumpsThe components of a plunger pump are bearings. Assuming there is clearance in the bearings, it will not allow for the normal clearance of the three pairs of friction pairs in the hydraulic pump, and will also damage the thickness of the static hydraulic support oil film of each friction pair, reducing the service life of the plunger pump bearings. According to the information provided by the hydraulic pump manufacturer, the uniform service life of the bearing is 10000 hours. The disassembled bearing cannot be inspected without checking the instrument, and can only be tested. If any discoloration or discoloration is found on the surface of the roller, it will be replaced.