[Pump Bearing - Repair of Rolling Bearings] 1) The average life of rolling bearings in 5000h or so, if used too long or improper installation and maintenance, will make the bearing damage. Found that there are cracks in the inner and outer rings of rolling bearings, ball broken, and the ball and the gap between the inner and outer rings with 03mm feeler gauge exceeds the provisions, should be replaced with a new bearing. 2) If the inner ring is tight or the rotation is not flexible enough, it may be that the cage of the rolling ball has mechanical friction due to distortion and bearing åœ. At this time, the cage can be gently tapped with a hand hammer to correct its deformation. 3) If the appearance of rust, emery paper can be used to erase, and then washed and dried. 4) The pump shaft and bearing inner ring with tight, generally with pressure method, if there is any difficulty heating method available. [Pump Bearing - Sliding Bearings Repair] 1) Bearing Repair: Bearing plain bearing is the most easily worn or burned parts. In general, if the bearing surface alloy wear, abrasion, spalling and melting greater than 25% contact area of ​​the bearing, the bearing alloy should be re-cast. 2) Scraping of bearing bush: Scraping bearing bush should be coated with a layer of red lead oil on the pump shaft first, and then turn the pump shaft back and forth within the bearing bush for two turns to remove the pump shaft. At this time, many sizes will be seen on the bearing surface Uneven distribution of black spots. These small black spots indicate that the bearing bush is higher than the part, and scraping it gently with a scraper. Then, repeat the above steps, until the bearing surface of the honeysuckle points are evenly covered. Scraping should first scraping the bearing, after scraping the bearing. 3) Measurement method of the gap between the journal and the bearing bush: The gap measurement between the journal and bearing bush should be measured by the method of pressure lead wire. When measuring, the bearing should be placed on both sides of the bottom half bush and on the top of the journal 1-1.5mm fuse, and then the bearing on the bearing, cover, tighten the bolt cap and then open the bearing cap, remove the crushed fuse, and then measured the thickness of the micrometer (usually along the fuse length measurement 3-5 Click on the average).