Product review (5 stars): Made my EC680 espresso machine like new
Decided to DIY because there aren't any service shops near me.  Machine was barely pushing out water despite regular de-caulking.  Took maybe 75 mins to take my machine apart, install the pump and put it back together. There are no instructions on how to do this (I don't think delonghi wants consumers doing this), but it now works perfectly!  I should have replaced the pump many months ago. Now delivers espresso drinks quickly with 4-5mm of foam on top.  Very happy