Bosch
Brew Drive / Gearbox Noise
Machine makes loud banging or clicking noises during startup or brewing.
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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 or broken gears in brew drive, Misaligned brew unit, Obstruction in brew mechanism, Lack of lubrication on moving parts
How to Fix / Troubleshooting
Safety first: Unplug the machine before removing the brew unit.
- Remove and clean brew unit: Rinse and dry the brew unit, then lubricate the rails and joints with food-safe silicone grease.
- Inspect for broken pieces: Look inside the brew chamber area for broken plastic fragments or foreign objects and remove them.
- Reinstall brew unit correctly: Ensure it is fully locked in place.
- Test again: Plug in and start a rinse cycle. If loud banging persists, stop the machine.
- Contact service: The brew drive gearbox may be damaged and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Brew Drive Gearbox
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