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Doser system sticks
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Discussions > Espresso > Grinders -... > Doser system...  
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new_ton
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Joined: 11 Apr 2014
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Location: Chincoteague Island, VA
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Espresso: La Pavoni Pre-Millenium, La...
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Drip: Hamilton Beach Carafe
Posted Tue May 6, 2014, 11:15am
Subject: Doser system sticks
 

I have a Quickmill Replica grinder and the doser system is a bit off. It will click around but then it gets stuck and stops revolving. I then have to manually push the doser forward untill I hear a "click" and then it works again. This happens once every revolution. Has anyone else had this type of problem? Thanks!
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,775
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Tue May 6, 2014, 1:05pm
Subject: Re: Doser system sticks
 

As a wild guess, I suspect that it is pretty nasty and gummed up with coffee inside. Once it stops, the ratchet paul can not reset so you need to move it by hand until it "clicks" home and grabs again. When was it last cleaned in the gears and levers?

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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new_ton
Senior Member


Joined: 11 Apr 2014
Posts: 18
Location: Chincoteague Island, VA
Expertise: I love coffee

Espresso: La Pavoni Pre-Millenium, La...
Grinder: Baratza Virtuoso Preciso,...
Vac Pot: Yama Stovetop (5 Cup)
Drip: Hamilton Beach Carafe
Posted Tue May 6, 2014, 1:11pm
Subject: Re: Doser system sticks
 

Not sure, I picked it up second hand. My guess is it has been awhile. Thanks.
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takeshi
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takeshi
Joined: 12 Oct 2002
Posts: 976
Location: Houston
Expertise: I live coffee

Espresso: Alex Duetto 3.0
Grinder: Super Jolly
Roaster: Amaya Roasting
Posted Fri May 9, 2014, 12:00pm
Subject: Re: Doser system sticks
 

new_ton Said:

Has anyone else had this type of problem?

Posted May 6, 2014 link

Yup.  Had to tear down and clean up my SJ's doser back when I got it.  It was a Starbucks decaf grinder and was filthy and gummed up.
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new_ton
Senior Member


Joined: 11 Apr 2014
Posts: 18
Location: Chincoteague Island, VA
Expertise: I love coffee

Espresso: La Pavoni Pre-Millenium, La...
Grinder: Baratza Virtuoso Preciso,...
Vac Pot: Yama Stovetop (5 Cup)
Drip: Hamilton Beach Carafe
Posted Sun May 11, 2014, 8:24pm
Subject: Re: Doser system sticks
 

Ok, I cleaned the doser out, but the problem remains. It seems like the doser needs some sort of stop to click over to the next position. It's not getting that back pressure. I'm trying to wrangle up a schematic from Quick Mill now.
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new_ton
Senior Member


Joined: 11 Apr 2014
Posts: 18
Location: Chincoteague Island, VA
Expertise: I love coffee

Espresso: La Pavoni Pre-Millenium, La...
Grinder: Baratza Virtuoso Preciso,...
Vac Pot: Yama Stovetop (5 Cup)
Drip: Hamilton Beach Carafe
Posted Wed May 14, 2014, 6:59am
Subject: Re: Doser system sticks
 

Ok, I now have a perfectly clean grinder, inside and out and I found the issue. The metal doser pawl stop spring somehow became overly bent and no longer caught the doser gear. I staightened it with a pair of needle nose and now the doser works.
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,775
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Wed May 14, 2014, 1:07pm
Subject: Re: Doser system sticks
 

Glad you found the answer :D

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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 View Profile Visit website Link to this post
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