iRobot Brush Gearbox / Belt Damage

Vacuum makes a clicking or popping noise from the floor nozzle when the brush is running.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Damaged gear teeth in brush drive, Slipping or stretched belt (if belt‑driven), Foreign object in gear train, Loose brush end cap

Safety first: Turn OFF the vacuum, remove the battery, and detach the nozzle before inspection.

Remove brushroll: Take out the brushroll and inspect the drive end for cracks or missing teeth.
Inspect belt or gear: If your nozzle uses a belt, check for cracks, glazing, or stretching. If gear‑driven, look for debris or broken gear teeth.
Clean gear area: Remove any debris from the gear or belt compartment.
Replace damaged parts: Install a new belt, brushroll, or entire nozzle assembly if gears are stripped or housing is damaged.

Medium 3/5

Motorized Floor Nozzle

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