After the end of winter irrigation, the water pump used for one year will be put into stock. It is necessary to thoroughly overhaul and maintain the water pump in winter season. After the pump is deactivated, all the water in the pump and the water pipe should be drained, and the external mud should be cleaned to prevent freezing of the pump body and the water pipe after freezing. The impeller, bearings, cups and other components of the pump must be carefully checked and parts that are worn out should be replaced. For those who do not need to be replaced, they must wash with gasoline, apply grease, and reinstall them. For bent or worn pump shafts, they should be repaired and replaced and reinstalled. For iron castings such as bottom valves and elbows for pumps, the iron rust shall be brushed with a wire brush, then painted, and then dried and placed in a ventilated and dry place of the equipment room or storage room. After the belt is unloaded, it should be washed and dried, and it should be hung in a dry place. Wash the detached screws with diesel oil, coat them with oil, reinstall them, or wrap them in plastic sheets and put them away to prevent loss.
Milkvetch Root
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