How to disassemble and clean bObsweep Robotic Vacuum Cleaner front wheel

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How to disassemble and clean bObsweep Robotic Vacuum Cleaner front wheel: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Place the washer and bearing assembly back on the front wheel in the correct order.
The large black washer sits on top of the wheel. The number 2 side should be facing upwards.

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