Hoover Mechanical Noise from Brush or Fan

Robot vacuum is very loud during operation, with rattling or grinding noises from underneath.

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Safety Warning

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.

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Possible Causes

Debris in main brush bearings, Foreign object in suction fan, Worn main brush end caps, Loose screws on bottom plate or motor mounts

How to Fix / Troubleshooting

Safety first: Turn OFF the robot and remove it from the dock.

  • Remove main brush: Open the brush guard and take out the Hoover main roller brush. Run the robot briefly without the brush to see if the noise disappears.
  • Clean brush ends: Remove hair and debris from the brush ends and end caps. Replace the brush if the bearings are rough or noisy.
  • Check bottom screws: Tighten any loose screws on the bottom cover and around the brush housing.
  • Fan noise check: If the noise persists without the brush, the suction fan may have debris inside or failing bearings. This requires opening the housing and possibly replacing the suction fan motor assembly.
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Repair Difficulty

Medium 3/5

Required Part

Main Roller Brush
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