Quote:
Originally Posted by slief
Brushed motors tend to be loud regardless of their RPM. If you find a 100 rpm pump that is the same (looks the same) as your 600 RPM pump, I am pretty sure you can swap the motor over but unless the bearings are bad in your 600 rpm motor, the noise you are hearing is likely normal and or the result of the gears themselves.
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It's a loud hum that is the noise at all RPM's. Would replacing brushes make any difference?
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