The repair and maintenance of agricultural water pumps should proceed from the following aspects:
1. After the pump is deactivated, it is necessary to drain the remaining water in the pump and the pipeline, and clean the external mud so as to prevent the frozen water and the water pipe from bursting.
2. Bottom valves, elbows, and other cast iron parts of the pump should be brushed with a wire brush and then painted with anti-rust paint. After drying, they should be stored in a ventilated and dry place in the equipment room or storage room.
3. Belt-driven, the belt is unloaded, washed with warm water, dried and then hung in a dry, non-sunlit place, and not in places with oil, corrosives, and smog. Under no circumstances should the belt be stained with oils such as oil, diesel or gasoline, and should not be coated with rosin and other viscous substances.
4. Check ball bearings, such as inner wear, tamping, ball wear, or spotted surfaces. Replace the bearing with the available gasoline or kerosene that does not need to be replaced, butter it, and reinstall it.
5. Inspect the impeller of the pump for cracks or holes, and if the impeller is loose, repair or replace if damaged. If the impeller wears too much or has been damaged, the new impeller should generally be replaced. The partial damage can be repaired by welding, and the impeller can also be repaired with epoxy resin mortar. The repaired impeller should generally be subjected to static balance test. Check the clearance at the wear ring of the impeller. If it exceeds the specified value, it should be repaired or replaced.
6. For bent or worn pump shafts, they should be repaired or replaced, otherwise it will cause imbalance of the rotor and wear of the relevant parts.
7. The detached screws are immersed in diesel oil and brushed clean with steel wire, and coated with oil or butter, re-installed or put it in plastic wrap (can also be immersed in diesel), in order to avoid rust or loss.
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