Fixing my espresso machine
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My espresso machine was a bit leaky lately. It’s a Quickmill 820R. A nice machine, bought it refurbished. Put it away for about 2 years (my “Nespresso period”). I decided to go back to the real stuff, but found that it didn’t work as well as it would before.
As you can see below, it has a steam spout. This actually works as a valve, if you “open” the spout (turn it outwards), water (or steam) flows through the spout. Turn it inwards and the valve closes and water comes out through the portafilter.
Quickmill 820R
When making coffee, the steam spout would leak water. Without the coffee (free flowing water), it would not. Looks like a leaky o-ring of some sort. Google to the rescue, which gave me this link: http://my.opera.com/aventijn/blog/repairing-a-leaking-quickmill-820
Fellow Dutchman, coffee lover no doubt and handyman at the same time. What a combination and what a post. It took some courage and elbow grease but I made it! And the Quickmill as well 
And saved a few €€€ (€1,89 o-ring collection from Karwei, Dutch DIY store).
Leak fixed, no short circuit, no parts left over. An afternoon well spent. Now for some coffee!
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12:11 pm on March 14th, 2010
Hello, i noticed the website changed to: http://my.opera.com/aventijn/blog/repairing-a-leaking-quickmill-820
12:37 pm on March 14th, 2010
Thanks, fixed the link!
11:32 am on March 31st, 2010
Good thing you started on the real stuff again! It’s best for those machines to keep using them, it’ll keep them in good shape.
The only thing is, your machine doesn’t have a piston. A piston (remember the Piston cup from Cars?) is a zuiger, operated with a lever. E.g. the La Pavoni Europiccola: http://www.lapavoni.com/model.asp?id=1.
The item you are referring to is the portafilter, or grouphead: http://en.wikipedia.org/wiki/Portafilter
sry, had to do that