Gear oil pump and each component repair method: 1, the drive shaft and bushing wear after repair gear pump drive shaft and bushing wear, with the increase of the gap, will certainly affect the pump oil. In this case, you can use the repair initiative Shaft or bushing method to restore its normal fit clearance.If the drive shaft wear a minor, simply press the old bushing and put on a standard size bushing, with the gap can be restored to the allowable range.If the drive shaft and bushing Serious wear and excessive clearance with the gap, not only to change the bushing, and the drive shaft is also applied chrome or vibration welding method to increase its diameter, and then grinding to the standard size, with the bushing to restore the requirements. 2, drive shaft bushing hole and the wear of the driven shaft hole repair After wearing the spindle bushing hole wear, reaming method can be used to eliminate wear marks, and then with increased to the appropriate size of the bushing. Reaming method to eliminate wear marks, and then press the hole reaming the actual size of the preparation of the driven shaft. 3, the repair of the oil pump housing shell crack repair Shell 508 nickel-copper welding rod weld can be used to make up. Welds to be close and the yuan stomatal, and the pump cover with a flat surface error of not more than 0.05 mm. 4, the pump chamber cavity repair pump cavity lumen wear, generally take the lumen set method to repair, the cavity is enameled big set with cast iron or steel bushings. After set, the cavity enamel 5, the valve seat Of the repair: the pressure limiting valve has two kinds of ball valve and plunger valve.Wall valve seat wear, the ball can be placed on the valve seat, and then tap the metal ball gently until the ball valve and seat Such as valve seat wear serious, you can first hinge to remove the wear marks, and then use the law to make it close.Lock valve seat wear, you can put a little valve sand grinding until close together so far. 5, the pump cover repair work plane repair: If the pump cover wear a small plane, manual grinding method to eliminate wear marks, that is, put a little valve on the platform or thick glass plate sand, and then put the pump cover on the ground , Until the wear marks disappear, the work surface formation so far.When the pump cover working plane wear depth of more than 0.1 mm, should be taken after the turning grinding method to repair.
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