Disassemble the lower bearing, select and measure it. If there is scratch or discoloration on the roller surface, replace it. When replacing the bearing, the English letters and types of the bearing shall be reserved. Most of the plunger pump bearings are of large load capacity. The original manufacturer and Standard commodities shall be bought. If another brand is replaced, the personnel with experience in bearing shall be consulted to check the table for replacement, so as to adhere to the bearing and load capacity.

Application and repair methods of hydraulic pump plug pump: This paper mainly introduces the application and repair methods of hydraulic pump plug pump. 1 oil supply method of hydraulic pump

The direct axis swashplate plunger pump is divided into two types: pressure oil supply type and self-priming type. The pressure oil supply type hydraulic pump mostly selects the oil tank with air pressure, and the hydraulic pump itself is equipped with a make-up pump to supply pressure oil to the oil inlet of the hydraulic pump. The self-priming hydraulic pump has a strong talent of self-priming, and there is no external oil supply. The hydraulic oil tank supplied by air pressure can operate the machine only when the hydraulic oil tank reaches the application air pressure after starting the machine every time. If the air pressure of the hydraulic oil tank is short, it will act as a machine, which will pull off the hydraulic pump and the sliding whip, and will cause abnormal wear of the return plate and the pressing plate in the pump. Select the plunger pump supplied by the make-up oil pump. After use, the operator needs to check the plunger pump 1-2 times a day to see whether the working dynamic of the hydraulic pump is normal. If it is found that the speed of the hydraulic cylinder drops or the vehicle is blocked, it is necessary to check whether the empty position of the internal gear pump is too large.
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