How to eliminate the abnormal noise of the sprinkler truck water pump?

Analyze the abnormal noise of the sprinkler truck water pump for you. What is the problem with the noise?
Firstly, if the impeller of the water pump is broken or severely worn, the sprinkler truck water pump impeller needs to be replaced. It is recommended to carefully check if there is any abnormal noise from the water pump, because if the auxiliary transmission shaft and power take-off connected to the water pump malfunction, it can also cause abnormal noise. For example, if the transmission shaft is deformed, or if the gears inside the power take-off are broken or the bearings are loose, it can cause abnormal noise.
Here are the methods to eliminate abnormal noise at the water pump of the sprinkler truck:
Turn on the power take-off of the sprinkler truck to make the water pump and transmission shaft work, lie under the car and observe whether the transmission shaft shakes, and see if there is any problem with the transmission shaft. Secondly, if there is no problem with the transmission shaft, remove the transmission shaft, open the power take-off, let the power take-off run idle, and check if there is any abnormal noise when the power take-off runs idle, so as to determine whether there is a problem with the power take-off. If there are no issues with the power take-off and transmission shaft, then it is a problem with the pump.