ROOMBA J7 SIDE BRUSH Not Spinning
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
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91%
CONF
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Side Brush Motor Module
The J7 utilizes a modular side brush assembly. Over time, hair and dust ingress past the shaft seal, contaminating the internal gear grease and causing the motor to stall or the plastic gears to strip. As the module is a sealed unit, replacement is the only reliable method to restore the necessary torque-to-friction ratio required by the motherboard's current sensors.
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VIEW ON AMAZON
#CommissionsEarned
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6%
CONF
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Edge-Sweeping Brush (3-Pack)
The internal hexagonal socket of the side brush is made of a softer polymer than the motor shaft to prevent motor damage during impact. If the brush catches on a rug fringe or cable, this socket can strip out, allowing the motor shaft to spin freely while the brush remains stationary.
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VIEW ON AMAZON
#CommissionsEarned
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3%
CONF
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Side Brush Replacement Screws
Vibration during operation can loosen the captive screw on the J7 side brush. If the screw backs out sufficiently, the brush loses vertical compression against the drive shaft's hex-taper, resulting in a loss of kinetic transfer even if the motor is functional.
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VIEW ON AMAZON
#CommissionsEarned
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DIY Repair Guide
Watch exactly how to replace the Side Brush Motor Module.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.