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Thread: Bezzera BB004 Grinder Lower Burr Assembly

  1. #1
    Junior Member
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    Sep 2017
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    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?

  2. #2
    Mal Dimal's Avatar
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    Oct 2004
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    Warwick, QLD
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    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...

    Mal.
    Yelta likes this.

  3. #3
    Junior Member
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    Sep 2017
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    Quote Originally Posted by Dimal View Post
    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...

    Mal.

    Thank you Mal. I will try that.
    Dimal likes this.

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