Bearing lubricant is the main factor determining whether KOYO bearings can work normally for a long time. How should we distinguish the quality of KOYO bearing lubricants?
First, judge according to color: normal KOYO bearing lubricant is brown and blue black. If it is milky yellow, it means that the lubricating oil is mixed with diesel or water and should be replaced in time. If it is displayed in dark black, it means that the oil has deteriorated and must be replaced in time.
Second, use simple tools: Mix the KOYO bearing lubricant to be evenly distributed and then drop it on white paper (preferably filter paper) to form oil spots. The oil spots will gradually spread from the center for about 2 to 3 hours. Form three concentric rings. The state of the oil can be discerned based on the color, width and shape of the three areas.
Third, according to the feel of the hand: take a little KOYO bearing oil from the oil low shell, apply it on the finger, and use the index finger and thumb to honed. If you feel that there is impurities in the oil or that it is not sticky like water, or even smells astringent or sour, it means that the oil has deteriorated. If you can see the tiny shiny metal grinding on your fingers after honing, it means that the engine has serious wear and tear, and you need to replace the wear parts related to the repair and repair in time.
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