After using the gear pump for a period of time, some small problems sometimes occur. Although the production will not be affected, the working efficiency of the gear pump will be significantly reduced. If this small problem is not solved, the gear oil pump will not run or be scrapped. Here are some faults and solutions after the wear of the driving shaft and bushing of the pump.
The wear of the main shaft bushing will increase its fitting clearance, reduce the pressure in the pump and reduce the oil output of the oil pump. We can repair the driving shaft or bushing to restore its normal fit clearance. If the driving shaft is slightly worn, just press out the old bushing and replace it with a standard bushing, and the fit clearance can be restored to the allowable range. If the driving shaft and bushing are seriously worn and the fit clearance exceeds the standard, not only the bushing shall be replaced, but also the diameter of the driving shaft shall be increased by chromium plating or vibration surfacing, and then ground to the standard size to restore the fit requirements with the bushing. Some methods can be used to repair the worn gear pump.
