Water pump motor murmur is very big how is it should be how to deal with it

Replace the bearings. If the bearings have a sound means that the bearings are bad, spend a small amount of money to prevent the motor bad. Usually a front bearing will be bad because the front one is usually heavier bearing capacity and frequent contact with water is easy to rust and cause wear and tear. Therefore, the sound is relatively large, to pay attention to the front of the mechanical water seal is not because of bad water into the bearing bit. So pay attention to check when the front side is removed. I don't know what type of pump you are using. Centrifugal self-priming type is usually in front of the water leaf is aluminum to be careful when removing. Bad one has to spend more than a dozen dollars. 1, first of all, the rear side of the wind cover and wind blade removed. 2, the motor and the front side of the pump head of the three screws removed. 3, the motor and the front side of the pump head of the three screws. 4, the front side of the pump head of the three screws removed. Directly hold up the water pump head vertical rear axle direction to the board mat ground, downward light chopping will make the motor into the shaft separation. 3, if you do not want to change the bearings can be refueled to the front bearing. 4, if you want to replace the water pump head outside the six screws removed. It is the old machine if the screws can not be removed when not hard to screw over. First use a hammer to hit the screw cap and then go screw. If there is screwed off, it does not matter as long as there are four symmetrical screws can be. 5, open the shell to see the water leaf, small motors, then the front of the shaft head of a 10 screws removed is the water leaf, so be especially careful to be more difficult to take down, very tight if you want to knock vibration and then go to pick up. If it is a larger motor is usually rotated counterclockwise to unscrew, remove the mechanical water seal will be seen, be careful to take out can not be damaged without leakage is usually not replaced, the old machine is best to replace. 6, after removing the water seal, pick up the shaft to the front of the shaft direction vertically down in the wooden cushion chopped down the connecting housing. After that is to dismantle the bearing. Use a hard iron that can be inserted into the bearings and the core of the front shaft direction vertically downward with a hammer to the bearings fall down. 7, according to the original installation to the original on it. This is too detailed will not if no one to help you. Give more points!