Replacement of the boiler cap

Sounds like a good cleaning or proper usage may be in order. Consult the manual for both.
Download Krups 872 Manual

Probably needs a good cleaning. Be thorough!
Download Krups 872 Manual

Krups manuals can be found online. Visit this site for the Krups 872.

http://lib.store.yahoo.net/lib/krupsonline/872.pdf

Hi,

I can email you the manual in a .pdf file.

Hi,

You didn't say what model is your expresso machine.
You can find parts here:

http://www.krupsonlinestore.com/category.asp?MENU=parts

Hi,
I have a #872 model. It is very similar to the #871.
Where the gasket is there is a small metal filter too, attached by a screw.
UNPLUG your coffemaker!!!
If you unscrew the filter and remove it with the gasket most likely you are going to find the other side of it clogged by coffee. Wash it off and wash the gasket well too with dishwashing soap. Rinse them off well.
You should try to clean off the coffemaker part to where the gasket lays. Usually it is full of burnt of coffee.
If there is no other problem with your coffemaker this should solve your problem.

It's my opinion that the tube goes in the boiler so that when the water boils, the steam will push the water up the tube and to the brew head. Without the tube, you will just get steam through the grounds.

Good luck!

hello use a calcium remover put some in let it work rinse it good .no steam probably heater full of calcim you may have to clean it a few time before cheers

You can find your manual at this address:
http://www.manualnguide.com/dl/11395/

Regards.

Hi if you "google" krups spare parts or krups espresso jugs you will get a few companies who sell spares. Also if you go to krups.com they will list their dealers for spares and accessories.