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Adventures in Gaggia Evolution modding
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Discussions > Espresso > Espresso Mods > Adventures in...  
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amufe
Senior Member


Joined: 13 Aug 2011
Posts: 13
Location: Hong Kong
Expertise: I love coffee

Espresso: Isomac Zaffiro
Grinder: EM0480
Drip: Hario
Posted Tue Sep 4, 2012, 8:14am
Subject: Re: Adventures in Gaggia Evolution modding
 

Can I open the top of the machine  without  pushing the steam valve handle into the machine?
Thank you very much
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 530
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Tue Sep 4, 2012, 2:10pm
Subject: Re: Adventures in Gaggia Evolution modding
 

There is one way.. remove the steam knob and you will have enough clearance to take off the top.  Grab onto it with a pair of pliers, use a rag to cover the knob so you won't tear it up.. and pull.. the pliers will slip off...pull again...slip off again,  pull, etc etc until you get it pulled off.  There's a little spring clip inside the knob that might fall out once you get the knob off, make sure not to lose it, it's the only thing that holds the knob on.  It's a major PIA to get that knob off, that's why I did not mention it before.
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suki
Senior Member


Joined: 11 Aug 2012
Posts: 6
Location: Malaysia
Expertise: Just starting

Espresso: Gaggia Evolution
Posted Tue Sep 4, 2012, 3:10pm
Subject: Re: Adventures in Gaggia Evolution modding
 

Thk much for replay guys,

I hav manage to get off the top wit steam knob off, jus turn on ur knob fully n there will be a small gap enough for small screwdriver to get in to push out the knob.
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suki
Senior Member


Joined: 11 Aug 2012
Posts: 6
Location: Malaysia
Expertise: Just starting

Espresso: Gaggia Evolution
Posted Thu Sep 20, 2012, 5:20pm
Subject: Re: Adventures in Gaggia Evolution modding
 

Can i change the Evolution OPV to Classic OPV without changing the non-self-priming valve?
Is there any side effect after changing the non-self- priming valve?
Sorry for tat might be silly question.
Pls replay me,Thk much.
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 530
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Thu Sep 20, 2012, 6:14pm
Subject: Re: Adventures in Gaggia Evolution modding
 

Changing the Evolution OPV to Classic OPV has nothing to do with the self priming valve fix.  Those two mods are seperate.  HOWEVER, you need to use the tube that you got from the SPV for the overflow tube from the OPV to the reservoir.
The only 'side effect' of doing the SPV fix is that you have to prime the boiler first before brewing.  Put a cup under the steam wand, open the steam valve and turn the pump on till a stream of water comes out the wand (2 or 3 seconds will do).  Turn the pump off, Close the steam valve and you're ready to brew.
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amufe
Senior Member


Joined: 13 Aug 2011
Posts: 13
Location: Hong Kong
Expertise: I love coffee

Espresso: Isomac Zaffiro
Grinder: EM0480
Drip: Hario
Posted Tue Jan 8, 2013, 6:01am
Subject: Re: Adventures in Gaggia Evolution modding
 

the four hex socket screws around the group are extremely tight
any other solutions to loosen them?
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 530
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Tue Jan 8, 2013, 10:09am
Subject: Re: Adventures in Gaggia Evolution modding
 

Yes, they are quite tight, they have a white thread locker on the threads.  Use a good fitting allen wrench and a box-end wrench as a breaker bar.  That's how I got mine to break free.
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amufe
Senior Member


Joined: 13 Aug 2011
Posts: 13
Location: Hong Kong
Expertise: I love coffee

Espresso: Isomac Zaffiro
Grinder: EM0480
Drip: Hario
Posted Tue Jan 8, 2013, 5:43pm
Subject: Re: Adventures in Gaggia Evolution modding
 

fwtechwiz Said:

Yes, they are quite tight, they have a white thread locker on the threads.  Use a good fitting allen wrench and a box-end wrench as a breaker bar.  That's how I got mine to break free.

Posted January 8, 2013 link

what tool do u use to remove the group valve?
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fwtechwiz
Senior Member


Joined: 19 Feb 2010
Posts: 530
Location: Fort Wayne, IN
Expertise: I live coffee

Espresso: Gaggia Evolution
Grinder: Hario Skerton
Posted Tue Jan 8, 2013, 6:10pm
Subject: Re: Adventures in Gaggia Evolution modding
 

amufe Said:

what tool do u use to remove the group valve?

Posted January 8, 2013 link

The group valve fits a 12mm socket.  I use a 3/8 ratchet wrench, but if it's really scaled up, you might need a breaker bar.
A tip - put the four bolts holding the boiler to the frame back in when you try to get the group valve removed, it will provide the stability you'll need to put some real torque on the wrench to break the valve free.
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amufe
Senior Member


Joined: 13 Aug 2011
Posts: 13
Location: Hong Kong
Expertise: I love coffee

Espresso: Isomac Zaffiro
Grinder: EM0480
Drip: Hario
Posted Wed Jan 9, 2013, 3:37am
Subject: Re: Adventures in Gaggia Evolution modding
 

fwtechwiz Said:

The group valve fits a 12mm socket.  I use a 3/8 ratchet wrench, but if it's really scaled up, you might need a breaker bar.
A tip - put the four bolts holding the boiler to the frame back in when you try to get the group valve removed, it will provide the stability you'll need to put some real torque on the wrench to break the valve free.

Posted January 8, 2013 link

thank you
Can i use a normal wrench to break the valve free?
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