Introduction
In this guide I will show you how to replace the left wheel.
This will help you if the vacuum cleaner only runs in circles or reports error 7 or error 8. Please note, however, that these errors can also have other causes.
Tools
Parts
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Remove the main brush holder by pressing both locks inward and lifting it up.
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Remove the main brush.
 
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Remove the screw holding the side brush.
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Remove the side brush along with the screw by lifting it upward.
 
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Lift the front wheel with the screwdriver.
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Completely pull the front wheel upward to remove it.
 
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remove the three screws from the drive unit
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Remove wheel upwards (connected to a circuit board via plug connection)
 
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                            Conclusion
                          
                          Work through the steps in reverse order to reassemble your device.