1. Water pump surface and pressure water chamber (also known as the spiral case) the surface corrosion. The surface rust embossing will pump water reducing 7%-8%; maintenance only steel and iron brush paper or grinding smooth, you can make it at work to reduce fuel consumption or power consumption of 9%-14%.
2. Sealing ring gap increases. According to the test, when the gap in the direction of impeller radius increases 4 mm, the water pump will be reduced by 10%; only organic adhesive added back to the factory line asbestos clearance requirements for maintenance, so you can pump at work to reduce fuel consumption or power consumption of 10%-12%.
3. The pressure water chamber and the axis of the impeller does not coincide. According to the test, when the water pressure chamber and the impeller axis deviation from the 2 mm or greater than 2 degrees, the water pump will reduce the 5%-6%; maintenance, just measuring carefully, carefully identify the location of axis coincidence loaded solid, can pump at work so that the oil or reduce power consumption by 6%-7%.
4. Blade installation angle is not consistent. When the blade angle is different, the water pump will be reduced by 5%; maintenance, the perspective of quasi foot capacity, the installation position and firmly, so you can pump at work to reduce fuel consumption or power consumption of 5%-6%.
