Post By Dimal
Post By GeoffSG
Bezzera BB004 Grinder Lower Burr Assembly
I am trying to remove the lower burr assembly on my Bezzera BB004 Grinder. I am in the process of replacing my burrs and decided to try and clean under the "impeller" that the lower burr is attached to by 3 screws.
The problem is that it seems to be threaded onto the motor drive shaft and when I try and unscrew it the whole shaft turns so I can't get any torque on it.
Has anyone removed one of these before or know how to do it?
Take note of which direction the rotating burr rotates. This is the direction you need to use in order to loosen the Burr/Nut.
Put a piece of 6mm wooden dowel through the discharge chute such that it engages with a slinger arm when you slowly rotate the shaft in the appropriate direction. You can then apply as much force as is necessary to loosen the Burr/Nut.
Just use the above system in reverse when tightening the Burr/Nut back on. No need to "gorilla" tighten it though, as the starting torque of the motor will tighten it sufficiently, over time...
Originally Posted by Dimal
Thank you Mal. I will try that.