HomeRoast Digest

Topic: Question - Mazzer Mini: Lower Burr Holder Removal (6 msgs / 119 lines)
1) From: Eddie Dove
Does anyone know how the Lower Burr Holder can be removed?  I have taken the
bolt out, but it resists like it is pressed onto a tapered shaft.
Thanks in advance.
Errare humanun est - sed perseverare diabolicum
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2) From: Brett Mason
I have heard it is reverse direction to unscrew - but I am only suggesting -
I don't own one....
On 2/10/07, Eddie Dove  wrote:

3) From: raymanowen
Don't do that, Eddie- Why would you consider doing it?
If it's not completely different than the Major, the upper / lower burrs are
identical pieces. Three screws hold each of the burrs, and you must use a
nice sharp screwdriver tip of the correct size to handle these screws.
De-gunk the screw slot before you try to turn the screw.
Remove the Upper burr/ adjusting nut- Turn CW.
Block the lower burr/arbor against rotation, loosen the screws 2 turns but
do not remove them. Just pry the burr loose from its arbor.
[My motor has plain sleeve bearings, so no worry about Brinelling any races
or steel balls by tapping on the end of the motor shaft.]
Just don't do it- you could crack the rear motor end bell. Then you have a
pile of junk.NTG!
If you must hold the arbor in your hands, replace the allen head bolt you
took out and just back it out two turns from snug.
Use a gear puller, with its fingers under the burr and the big screw pushing
on the head of the allen screw. The spindle should pop right off the motor
Why would all this make for a good day at the Dove home?
Cheers -RayO, aka Opa!
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976

4) From: Eddie Dove
RayO asked, "Why would all this make for a good day at the Dove home?"
Precisely the question I was trying to answer and you did so perfectly,
RayO.  I was trying to determine if it was worthwhile adding that as one of
the steps to my periodic intense cleaning process.  Whilst I do have the
equipment to do so, I have decided, NOT to add that step.
Thank you,
On 2/10/07, raymanowen  wrote:

5) From: raymanowen
If you remove the arbor from the motor shaft, the Z location of the arbor
and lower burr would be lost. That's not as important as the near
interference fit of the arbor on the motor shaft. When you think you have
the allen head screw bottomed and tight, the Zero point could drift down for
a while as the arbor jammed further onto the shaft.
I guess yours has the same confounded gap under the burrs as mine. I
wouldn't even remove the burrs to clean out underneath them. Just misuse a
spring hook to loosen and dig out the coffee gunk and goo. Then vacuum out
the garbage. They'll really be packed with almost black coffee goop, unless
you replaced the burrs recently or it's a brand new machine.
All you should do, IMO, is dig out the junk and vacuum it on a weekly
schedule. If you grind daily and clean out weekly, the miserable gaps under
the burrs will only be packed solid with coffee goo for five days out of
seven. It is easy to dig out, only being packed in for 7 days.
How much worse is that than never cleaning them out, and having them packed
full 7/ 7days? Grim. I wouldn't remove the burrs except to replace them. The
screws and the threaded holes would wear out in short order.
You'd need to have the seating surfaces of the burrs and their arbor / nut
absolutely pristine when reseating the burrs. A little dirt would skew the
burrs and it would grind funny. Removing the burrs for cleaning is
Maybe some shops did it. Where are they now? I've got their grinder-
Cheers -RayO, aka Opa!
Got Grinder in your superauto? Who cleans it? It's not That automatic. Push
the button, Max!
On 2/10/07, Eddie Dove  wrote:
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976

6) From: Eddie Dove
Thanks RayO ... again, great information.  I have found a dental pick to be
quite useful ... 'bout time i put itself to good use.
On 2/10/07, raymanowen  wrote:

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