If the gear pump is not functioning properly or there is a phenomenon of seizure This situation more common in the needle rotation is not flexible Pump body axial clearance and radial clearance is too small Cover and shaft concentricity is not enough Pump and motor coupling Concentricity is not enough Pressure valve failure Gear pump impurities Impurities such as: Adjust the pump shaft and motor coupling concentricity so that it does not exceed 0.01mm Replace the cover to concentric with the shaft Filtered with a fine silk mesh Oil decontamination generally common in gear oil pump top circle and the pump body bore radial clearance is too large, the gear side and front and rear cover end clearance gap is too large and so on. Suction position is too high or the oil level is insufficient or the filter is clogged, the gear pump seal is not tight, the oil temperature is too high, may also lead to non-oil absorption and other conditions.Method of disposal, such as: replacement gear pump body .In the fuel tank to reduce oil Location. Clean or replace the filter element. Replace the sealing element and fasten the connections. Add a cooler to the tank or air-cooled.
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