DeWalt
Motor Bearing Wear / Fan Damage
Vacuum is very loud or makes a high-pitched whine compared to normal operation
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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
Worn motor bearings, Damaged or unbalanced fan impeller, Foreign object in fan housing, Loose motor mounting screws
How to Fix / Troubleshooting
Safety: Remove the battery and wait for the motor to stop completely before inspection.
- Check for debris: Remove the dust canister and inspect the motor intake for screws, nails, or other debris contacting the fan.
- Listen to motor: Spin the motor/fan by hand (if accessible). Grinding or roughness indicates bearing wear.
- Inspect mounting: Ensure motor mounting screws are tight and rubber isolators are intact.
- Resolution: If noise persists and bearings are worn or the fan is damaged, replace the complete motor assembly. Operating with a damaged fan can cause catastrophic failure.
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Repair Difficulty
Hard
4/5
Required Part
Motor Assembly
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