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Changes to BCG800XL Grinder Jamming due to Worn Impeller Introduction

Edit by Ben Gottemoller

Edit approved by Ben Gottemoller

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Coffee grounds impeller
BCG800XL Impeller
Title
BCG800XL grinder jammingGrinder Jamming due to wornWorn Impeller
Introduction
This guide will walk through impeller replacement to fix the most common cause of jamming with the BCG800XL Smart Grinder from Breville.
Many users of the BCG800XL SmartGrinder experience jamming and a gear-stripping sort of sound at some point. This is usually either a worn out impeller or stripped drive gear. The main symptom of a worn impeller is it'll jam and the motor will bog down even at course grind settings (which should be easy on it).
The BCG800XL smart grinder has an impeller that sits underneath the steel burrs. Its purpose is to push the grounds out the chute that leads to the basket (or espresso portafilter). When the blade fins wear down over time, the grinder begins to jam up because it can't properly expel the grounds anymore. This often gets mistaken for a problem with the main drive gear when a stripping sound comes from a torque limiter mechanism. You can tell if you simply remove the burrs, and look at the gap between the cylinder wall and the impeller blade tips. If it's more than 1 mm, then it's probably worth replacing. If you can take the impeller out without dis-assembly, then it's definitely worth replacing. Breville unfortunately doesn't sell parts, so this tutorial has been made possible only recently by 3D printer technology (eg: http://www.shapeways.com/product/NASLAGCCP/coffee-grinder-impeller-upgrade-for-bcg800xl?optionId=59828418 )
This guide will walk through impeller replacement / upgrade to fix the most common cause of jamming with the BCG800XL Smart Grinder from Breville.
Time Required Min
10 minutes
Time Required Max
35 minutes
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Conclusion
To reassemble your device, follow these instructions in reverse order.
The steps should have taken you all the way through re-assembly. Provided that impeller wear was your issue, everything will work again. If you still have gear stripping issues the next thing to investigate is the main drive gear. There's a guy selling those on eBay if you do a search for "BCG800XL gear".
Public
No
Yes

Tools

  • Long shaft Phillips #2 Screwdriver x1 added.
  • Socket Wrench x1 added.
  • 400 Grit Sandpaper x1 added.
  • File Set x1 added.

Parts

  • BCG800XL Impeller Coffee Impeller x1 This is a 3D printed part. added.

Flags

  • In Progress removed.

Steps

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