I want to know what that rubber circular thing under the top arm assembly and where you would get another one. Mine stopped pumping water through and after taking it apart, I realized that it was because that part wasn’t creating a good enough seal to make it able to form a vacuum. I wiped at it with my finger on both the main hole and the rubbery part and it works again. But who knows for how long. I tried asking Keurig about it and they just want to keep giving me the run around. First they said there were no user serviceable parts. Challenge accepted. Now they won’t give me a straight answer about how to replace this one simple part. They want to talk to me on the phone about it. I don’t get why it is so hard!!!
I am having the same exact problem. My wife got this for me as an anniversary present. I am at the part where you are supposed to do the soldering to the battery box. Needless to say, I am stuck. I am thinking I’m going to have to find a piece of wire with insulation on it that I can use in the place of the junk that is in the box for this connection to the positive terminal. It’s the only solution I can think of, anyway.