Stihl
Vacuum Motor Bearing Wear
High-pitched whine or screeching noise from the motor area
Advertisements
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.
Advertisements
Possible Causes
Worn vacuum motor bearings, misaligned motor fan, debris in motor fan housing
How to Fix / Troubleshooting
Safety: Unplug the cleaner. Do not run the motor if the noise is severe.
- Check for obstructions: Remove the motor cover and inspect the fan housing for debris rubbing against the fan blades. Remove any foreign objects.
- Spin motor shaft: With the belt removed (if shared), spin the motor shaft by hand. Grinding or roughness indicates bearing failure.
- Assess usage: If the unit has many hours of use and bearings are noisy, the motor should be replaced as a complete assembly.
Operating with failing bearings can lead to motor seizure and potential electrical failure.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Vacuum Turbine Motor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements