The inner surface of the pump and the inner surface of the pressure water chamber (also known as the volute) are rusty. 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%.

The clearance of the seal ring is increased. 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%.

The axis of the pressurized water chamber does not coincide with the axis of the impeller. According to the test, when the pressure chamber deviates from the axis of the impeller 2 mm or the angle is greater than 2 degrees, the water volume of the pump will decrease by 5%-6%. During maintenance, we need to carefully measure and carefully locate the location of the axis coincide, so that the oil or power consumption of the pump can be reduced by 6%-7%.

The angle of blade installation is inconsistent. When the blade installation angle is not consistent, the pump volume will be reduced by 5%. When using the angle gauge and the fixed position, the oil consumption or power consumption of the pump will be reduced by 5%-6% at the time of maintenance.

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