Replacement gears for an old Roomba 4200/1300 series Brush Deck
thingiverse
These three Gears came loose inside my Roomba Dirt Dog. I've also employed them for fixing a Brush Deck on my Roomba 4200 Series Discovery. The Gear18V2 wraps around a ball-bearing in the Gearbox, However, you might substitute gear18-withbush directly if your gearbox doesn't have a bearing.
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