Gaggia
Brew Group Drive or Gearbox Noise
Machine makes loud knocking or grinding noises during 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
Dry or dirty brew group rails, Worn or broken drive gears, Misaligned brew group, Foreign object in drive mechanism
How to Fix / Troubleshooting
Safety first: Turn off and unplug the machine before removing the brew group.
Steps:
- Clean and lubricate brew group: Remove the brew group, rinse it, dry it, and apply food-grade silicone grease to the side rails and moving joints.
- Inspect drive area: Look inside the machine where the brew group sits. Remove any loose plastic pieces or foreign objects.
- Reinstall correctly: Ensure the brew group is in its neutral position and fully seated when reinserted.
If loud knocking persists, the internal drive gears or motor gearbox may be damaged and require replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Brew Group Drive Gearbox
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