This article applies to mBot and other construction situation where the motor and wheel are connected via a plastic shaft.
1. Introducation
In the event of a severe external force such as a fall to the ground, the plastic motor shaft connecting the synchronizer wheel to the TT motor may break (red marked portion of the picture below), which will result in the subsequent inability of the wheels to move properly.
2. Step by Step
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A part of the plastic shaft may remain inside the motor or wheel after breaking. Please disassemble the TT motor and remove the remaining part of the shaft.
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Find the spare motor shaft already included in the product kit, if it is lost, you can contact the Makeblock service team to apply for a replacement or purchase. Use the screwdriver that comes with the product (if not, an ordinary screwdriver that can align the screw holes is also acceptable) to install the new motor shaft to the TT motor, and then install the motor to the wheel, here is the video operation guide: https://www.youtube.com/embed/MDb1uWpbK6Y
- Check whether there is plastic shaft remaining in the synchronizer wheel and try to remove it if yes. If unsuccessful then you may also need to replace the synchronizer wheel with a new one.
3. Still Need Help？
Feel free to contact the Makeblock support team service@makeblock.com for any other questions or needs!
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