Hi. Can anyone shine any light on this problem - Lately the portafilter on my Gaggia has become very difficult to insert into the grouphead. Possible reason may be that it is expanding under heat. I thought it may have been a worn O ring so I replaced it a month ago. This hasn't solved the problem.
At times I just about need a shifting spanner to get the portafilter to insert. To make things even more interesting the O ring sometimes has a mini explosion and becomes quite pliable and the opposite occurs - portafilter inserts easily. This tends to occur after frothing milk.
By next session it reverts back to its old difficult hardened self. Go figure! The machine still pours a great shot except for this problem.
Any ideas anyone?
At times I just about need a shifting spanner to get the portafilter to insert. To make things even more interesting the O ring sometimes has a mini explosion and becomes quite pliable and the opposite occurs - portafilter inserts easily. This tends to occur after frothing milk.
By next session it reverts back to its old difficult hardened self. Go figure! The machine still pours a great shot except for this problem.
Any ideas anyone?
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