What to do if the motor makes noise?

• Mostly, bolts are loose, enhancing the force during the motor works and making noise when continuous exertion occurs. This problem can be solved by tightening the bolts. So, then the motor can work smoothly.
• If the bolts are correctly fixed, then the problem with disc brakes can make noise. You should check whether the brakes are working fine or not. Because, occasionally, even when brakes are not in use, they are thumbed, resulting in grinding noise.
•  Open the hub motor and check the gears; if you feel that the gears are dragging or not working correctly, the problem is making noise. So, this problem can be solved by changing the old gears to new ones.
• The last factor that can cause noise is bearing friction. The ball bearing in the motor can produce conflict and not work smoothly. So, to avoid and solve this problem, give the oil lubricant to the bearing. It will reduce friction, increase efficiency, and lessen the noise.

Try to apply the lubricant after some days because if friction is continuously produced, it will increase the unreal noise.