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Boardwalk :: Forum List Espresso in General Entry level < 400 dollars!
JP
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 gaggia grouphead disassembly-blueprints - 2005/11/22 10:14 As my Gaggia Tebe is struggling to pass the coffee and a descaling had not given the desired effect. There was need for a major clean up operation. I was therefore very happy to have google discover Dave Anderson's article on grouphead assembly

http://www.coffeecrew.com/content/view/291/99/

He was kind enough to provide some feedback but suggested I continue here.

Sure enough my Tebe has exactly the same parts as on the photographs. The problem is my shower holding plate. As you can see it has 4 holes near the edges of the circle. Only 1 of them is passing water. I have tried with a needle to scrape out stuff but this is not enough. So the thing has to come of... but it is really stuck.

I have now ordered a new holding plate so I can better understand how it is connected (and the old one is no good anymore I guess). While I was at the site of the Dutch Gaggia importer I noted that he has put blueprints of a lot of gaggia machines online. This may be of interest to the more technically inclined here.

http://www.sttlelystad.nl/

It is in Dutch so here is what you do: in the left menu click on Gaggia followed by "Schema's" and again Gaggia and your model.

I will keep you posted and might try the trick with the showerhead screw once i haqve the new part in if someone has the golden tip please share.

Thanks JP
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dave
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Re:gaggia grouphead disassembly-blueprints - 2005/11/22 16:49 JP,

Sorry, I misunderstood that you saw water coming out of the shower screw hold instead of the four water channels (which is normal), rather than what you are describing where three of the four holes are clogged. Regardless, it sounds like it is quite stuck.

You are likely best to try soaking the group in descaler or detergent (preferably a coffee detergent like Cafiza, rather than a household detergent that will leave a residue and possibly taint your coffee) -- don't run any detergents through the machine, but apply it externally to soak the group ( e.g. if you can manage to place it upside-down). If you can't get sufficient leverage by using a screwdriver or screw, try knocking it gently but firmly with a rubber mallet. A screwdriver or allen wrench could be used to lever the plate from inside one of the holes, if necessary.

Once you get it off, you'll have to scrub down the group body to prepare it for whichever plate goes back in. Ideally, you would like to check the solenoid valve and the boiler as well if there is any likelihood of heavy scale buildup, though I wouldn't be surprised if you might end up needing replacement rings or gaskets after taking them apart. If large scale deposits were suspected, there is a risk of clogging the solenoid with debris from descaling the boiler.


Did you order a replacement GROUP GASKET and SHOWER SCREEN along with the shower plate? They may need to be replaced given the state of the group, or in case of damage during disassembly. The plate should be salvageable, though I can understand the desire to be sure that you have a workable part.

Dave

Post edited by: dave, at: 2005/11/22 16:52 Dave is an Ottawa resident and Coffee Expert
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JP
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 Re:gaggia grouphead disassembly-blueprints - 2005/11/22 18:30 Yep I ordered some gaskets and new showerhead as well, the holding plate is only 5 euro (not sure how much that is in Canadian, not much).
I have also ordered gaggia descaling agent based on grapes (?!)


The outside-in descaling sounds like a good idea, I will try that.
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jp
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 Re:gaggia grouphead disassembly-blueprints - 2005/12/02 04:46 Well here is the report:

I have disassembled the whole group. Soaked it twice 24 hours in descaler. And once 24 hours in the magic Coca-Cola

but nothing

So I send it to the Dutch importer who took it of and cleaned it at No charge!

So I'm one happy espresso drinker again
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dave
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Re:gaggia grouphead disassembly-blueprints - 2005/12/03 15:25
So I send it to the Dutch importer who took it of and cleaned it at No charge!

Wow! Now there is customer service for you.

Did they send it back saying 'well, you loosened it ...' ?


Enjoy your coffee. Be sure to treat your newly cleaned machine with some good beans! Dave is an Ottawa resident and Coffee Expert
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Boardwalk :: Forum List Espresso in General Entry level < 400 dollars!

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