Dreame Mechanical Noise from Fan or Brush Drive

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

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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 suction fan impeller, Worn fan motor bearings, Damaged main brush end caps, Foreign object in brush gearbox

How to Fix / Troubleshooting

Safety: Turn off the robot and remove it from the dock before inspection.

  • Isolate noise source: Run the robot briefly upside down (held securely) to determine if noise comes from the brush area, wheels, or fan.
  • Check main brush: Remove the brush and run the robot. If noise disappears, inspect and replace worn main brush end caps or the brush itself.
  • Inspect fan: If noise persists without the brush, access the suction fan module and check for debris or damage to the impeller.
  • Lubrication caution: Do not apply oil directly to electric motors. If bearings are worn, replace the affected motor module.
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Repair Difficulty

Medium 3/5

Required Part

Suction Fan Motor Assembly
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