About: Leaf Motor Technology Co Ltd. was established in 2001,specialized in manufacturing bike kits,brushless hub motors,BLDC motors, motorized wheels.The company has been listed as the key enterprise of bike parts...

Spring come,nice days to ride e-bikes.But when you take out of your old e-bike from warehouse and are going to ride it.Suddenly you would find there is strange noise from hub motor .
These days most of electric bike motors are brushless gearless and used for electric bikes widely.It was made of rotor-winding,magnet,hub,covers,axis,bearings...
If this hub motor has strange noise,generally it's from rotor-winding rub magnet or the bearing is broken.It's easy to solve it.The important is to disconnect this bldc hub motor.
You should prepare some tools:
1.Hexagon wrench (Necessary)
2.Hammer (Necessary)

Disconnect hub motor Step 1:
Take off nuts and gasket on axis and use hexagon wrench to loose 16 screws.

Step 2:
Make the hub motor stand and cable is bent inside.Left hand hold the hub motor and use hammer to knock the axis.

Step 3:
After some knock,the cover will take off hub.

Step 4:
Use the same way to knock the other axis,the other cover will also take off hub.

Step 5:
When both side covers are off hub,next we should take out the rotor-winding.Make the axis stands on the ground,both hands press hub motor,the rotor-winding will out of hub.

Sterp 6:
Check magnet around inside hub,if there is some metallic impurities stick on magnet.Please remove it.If no,but found some friction trace on magnet.Please check around the rotor-winding and remove some glue around the steel.If not,please check the bearing inside the cover.Use a little finger hold inside the bearing,use the other hand to turn cover,faster,better.If you hear some noise.Please replace bearings.

By now,you have solved problem. 



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