Thought you guys might enjoy this, at least I did through the process. Coffee machine is a la pavoni Stradivari, which was very due for a calcium cleanup and new rubbers..
Taking it apart:
Soaking in vinegar overnight to get out the gunk, in the picture are the chrome group head, bronze piston and scree. With some assorted bits:
Now this is pretty much the only type of puzzle I will consider doing. On the other hand, it's Sunday morning and I can't get coffee until it's finished:
And we're done! The machine needs to get broken in a bit again, as the crema is still a bit thin due to the cleanup. But no leaks and I have my coffee, two hours well spend: