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I scratched the inside of the grouphead - will this cause any leaking?
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Discussions > Espresso > Grinders -... > I scratched the...  
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foxbat426
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Joined: 5 Mar 2009
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Location: fla
Expertise: Just starting

Posted Sat Mar 14, 2009, 7:29pm
Subject: I scratched the inside of the grouphead - will this cause any leaking?
 

Hi,

In the process of putting in a new grouphead gasket (the guy i purchased it from swore it was the right one) and then removing it because the portafilter could not screw on the grouphead it was so tight, i scratched the inside of the metal grouphead. Will this cause any leaking? My original gasket had a bevel, while the new gasket was flat. I told that to the salesman and he said it would work fine. It was so tight i could not get the portafilters on the grouphead and it was so tight in the grouphead i had to pry it out with a screw driver!

Are some group gaskets beveled and are some flat or is the bevel in the gasket from wear of the portafilters over time? i have since put back the old gasket, but i notice a small leak when i brew. do you think scraping up the inside of the grouphead would cause a problem?

john
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xdavez
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xdavez
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Posted Sun Mar 15, 2009, 2:52pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

"scratch", no,  not likely to cause a problem.
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mrgnomer
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Posted Sun Mar 15, 2009, 7:34pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

Scratching the channel wouldn't cause a problem, I'd think.

One trick to get out a stubborn gasket that you're going to trash anyway is to drive a screw into it and use the screw to pull it out.  It usually works but if the gasket is really baked in and stuck you can pull it out in pieces.

There usually is a bevel on one side of the gasket around the outside rim.  The bevel goes up.

Click Here (espressoparts2.zoovy.com)
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TroyR
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Posted Sun Mar 15, 2009, 8:25pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

I wouldn't necessarily expect an old, reused gasket to seal properly.  Try a new one that is the correct size.  
I am told the bevel allows for easier gasket removal.  Bevel goes up as mrgnomer stated.

Cheers,
Troy
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philosogeek
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Posted Thu Mar 19, 2009, 6:37am
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

Man,

I just replaced my gasket and I although my old one had the bevel up (and that made more sense to me for installation purposes) I put the new gasket with the bevel down after reading the following on WLL:

  1. Slide a new gasket into place. Please note: The new gasket will have a flat side and a beveled side. The flat side points towards the top of the machine, the beveled side points downwards towards the portafilter!

Click Here (www.wholelattelove.com)

What a bummer, wish I had seen this thread first!

-p
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koffeekev
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Joined: 21 Jul 2002
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Posted Fri Mar 20, 2009, 1:02pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

I think you are talking about two different scenarios.
A lot of the new gaskets are beveled so the portafilter seats at an angle. The bevel goes down towards the handle. Cimbali and Nuova Simonelli are two that come to mind.

On the other hand the new Wega (e-61 style) have a slight bevel to make it easier to slide into place.

If you are not sure, the writing always goes up. Slight bevel like it was gently trimmed with a knife goes up. Pronounced bevel with a V shape at bottom edge goes down, flat end up.
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TroyR
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Posted Fri Mar 20, 2009, 4:15pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

This is the bevel I was referring to (used gasket).


Cheers,
Troy

TroyR: GHSealBezzera.jpg
(Click for larger image)
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koffeekev
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Posted Mon Mar 23, 2009, 1:30pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

Good example. This would be the type that helps you ease the gasket into place, it goes bevel up. The other type is much different, a with a deep V that faces down.
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philosogeek
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philosogeek
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Posted Mon Mar 23, 2009, 1:42pm
Subject: Re: I scratched the inside of the grouphead - will this cause any leaking?
 

Thanks for the pic Troy.  We are talking about the same thing, which makes sense since we have nearly identical machines.  The WLL FAQ I posted was for a Livia 90, which has the same type of gasket.  Strange.

-p
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