Water Pump Bearings and Slide Bearings Repair
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2. If the inner ring is tight or the rotation is not flexible enough, it may be that the cage of the rolling ball is mechanically rubbed due to the deformation twist and the bearing. At this moment, the cage can be tapped with the hand hammer to correct the deformation part.
3, if there is rust on the appearance, use a fine sandpaper to wipe, then wash and dry.
4, the pump shaft and the inner ring of the bearing fit tightly, generally press-in method, if there is difficulty available heating method.
Pump Bearings - Repair of Sliding Bearings 1. Repair of Bearings: Bearing pads are the most susceptible to wear or burn-out. In general, bearing alloys should be refilled if the surface of the bearing alloy wears, scratches, spalls, and melts are greater than 25% of the contact area of ​​the bearing pad.
2. Grinding and scraping of the bearing bush: The scratching bearing bush should be coated with a layer of red lead oil on the pump shaft first, and then the pump shaft should be placed in the bearing bush to make two revolutions. Take out the pump shaft. At this time, many sizes will be seen on the bearing surface. Unevenly distributed black spots. These small black spots indicate the higher part of the bearing pad and are scraped away with a scraper. Then, repeat the above steps until the small black spots on the surface of the bearing pad are evenly covered. When scratching, scrape off the bearing and scrape off the bearing.
3. Measurement method of clearance between journal and bearing shell: Measurement of clearance between journal and bearing pad is generally by wire drawing method. When measuring, firstly place the diameter of the bearing on both sides of the lower half bearing plane and the top of the journal. - 1.5mm fuse, then close the upper bearing shell and bearing cap, tighten the bolt and then open the bearing cap, take out the squashed fuse, and then use a micrometer to measure the thickness (usually measured along the fuse length 3-5 points Take the average).