ROOMBA J7 SIDE BRUSH Not Spinning
| CONF | DIAGNOSIS | PART MATCH | 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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CHECK PRICE |
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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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CHECK PRICE |
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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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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Side Brush Motor Module.