Restoring my “new” Gaggia Baby espresso machine
I recently purchased an espresso machine to fuel my addiction - a Gaggia Baby circa mid 1990’s. You might wonder why I bought such an old machine, but it was a smoking deal - I got the machine and the grinder for a super-low price, and then sold the grinder on ebay to basically pay for both. So, it was worth it to put some time and a little money into making it like new again.
Gaggia home machines are pretty ubiquitous, as the internals have been the same for 20 years or so, with only cosmetic changes outside - so parts and instructions aren’t too difficult to find. My particular model is a “Baby”, which includes the 3-way valve and an adjustable OPV (over-pressure or pressure relief) valve, otherwise all models are basically the same. Being about 15 years old, it was showing some wear and tear, and was also showing that it hadn’t been cleaned in a LONG time. Before I noticed how much gunk was built up on it, I tried to pull a few shots - they all came out way too quickly, even with the grinder burrs basically touching.
So, I did what I usually do, and took the whole thing apart :). Gaggia machines are very easy to tear down, all it takes is a couple screwdrivers and allen wrenches. When you do take these machines apart, just be sure to label all the wires and take some photos to reference when re-assembling - a little masking tape and a sharpie can go a long way.
Once everything was apart, I started cleaning. The group (part the holds the portafilter) needed a ton of cleaning and scraping, there was years of coffee gunk in there. All parts got a few soaks in descaling solution and citric acid baths, there was quite a bit of scale on everything. It took about 5 soaks to get everything cleaned up, and a bit of scrubbing inside the boiler as well. I purchased a complete Gaggia rebuild kit on ebay from “supercoffeeman”, which includes all seals and gaskets needed to make the machine like new. For an older machine, its safe just to replace everything, for a newer machine all you may need to replace is the group gasket. In any case, if the rubber is brittle or cracked, its time to replace- mine certainly was. In subsequent posts, I’ll go over the details of the mods and adjustments I went through to get it dialed in pefectly…
No responses yet