A teardown for Bafang Ultra M620 /G510 motor

Bafang Ultra M620 /G510 motor take apart: controller, primary gear, secondary gear and thirdly gear, torque sensor, motor rotor and stator. You can get all these Bafang M620 spare parts on www.greenbikek... ;You will get to know how to replace the gears, torque sensors or M620 rotors.
Tools needed:
1. Allen key;
2. Cross screw driver;
3. Plier (7 inch or 8 inch) with straight head for removing the torque sensor;
4. Rubber hammer;
Related parts(www.greenbikek... ):
1. Bafang M620 controller www.greenbikek...
2. Bafang M620 primary gear: www.greenbikek...
3. Bafang M620 /G510 middle steel gear: www.greenbikek...
4. Bafang M620 /G510 third steel gear: www.greenbikek...
5. Bafang M620 EB-Bus cable: www.greenbikek...
6. Bafang M620 chainwheel: www.greenbikek...
7. Bafang M620 crank arm: www.greenbikek...
8. Bafang M620 controller gasket: www.greenbikek...
9. Bafang M620 motor core gasket: www.greenbikek...
10. Bafang M620 torque sensor: www.greenbikek...
11. Bafang M620 pawl clutch: www.greenbikek...
12. Bafang M620 Rotor: www.greenbikek...
13. Bafang M620 calibration display: www.greenbikek...
14. Bafang M620 kit: www.greenbikek...
8. Bafang M620 stator: www.greenbikek...
9. Bafang M620 full suspension frame: www.greenbikek...