FYI, cafe parts seems to have the gasket #7. That said based on the description of the problem the brass parts could be worn. Generally when the gasket goes they leak, not fail to properly depressurize.
https://www.cafeparts.com/Valve-Gasket-Ø-13x4x4-mm/Product/9670 On Wednesday, August 4, 2021 at 9:45:41 PM UTC-4 [email protected] wrote: > Great picture. Yup, you got it. > > You want a 6,10,12, and also a 9. And then order a #17 but 8.5mm made from > silicone from cafelat on amazon. > > Shame is that for those plungers all we really need is part #7 but at > least on mine I could find no way to disassemble (nor could I find #7 for > sale anywhere.) > > On Wednesday, August 4, 2021 at 12:07:14 PM UTC-7 HowardG wrote: > >> Below is the exploded view of the grouphead. I have already ordered parts >> nos. 10, 12, and 14. I guess the brew axle sealing gaskets are part no. 9, >> and the top plunger thing is part no. 6, correct? >> >> Thanks for your help! >> >> --Howard >> >> [image: brew group exploded view.png] >> >> On Wednesday, August 4, 2021 at 2:12:58 PM UTC-4 [email protected] wrote: >> >>> There are actually 3 of those brass plunger things. Two at the bottom >>> and one at the top. Mine were all cooked, so I'd guess if you need 2 you >>> will need all 3. >>> >>> The other thing to get are the brew axle sealing gaskets. The brew lever >>> attaches the the axle, the axle goes into the grouphead and turns a cam >>> that pushes the plunger things against a spring. There are rubber seals >>> that prevent brew water from leaking out. >>> >>> Finally, the bestest upgrade ever for the brewtus is a silicone >>> portafilter gasket. Get the 8.5mm from cafelat, on amazon for like $7. They >>> last forever. Make sure when you install that number on gasket faces up to >>> screen. >>> >>> On Tuesday, August 3, 2021 at 3:32:23 PM UTC-7 HowardG wrote: >>> >>>> Thank you for your response. I am gearing up to disassemble the lower >>>> part of the grouphead for cleaning as you suggest. In preparation I have >>>> ordered the following three parts from Whole Latte Love. Can you yhink of >>>> any other parts I might need? >>>> >>>> [image: Screenshot 2021-08-03 183042.png] >>>> >>>> On Monday, August 2, 2021 at 6:18:39 PM UTC-4 [email protected] wrote: >>>> >>>>> Ok, on the bottom of your grouphead is a long silver cylinder. Takes a >>>>> big wrench, 35mm? Inside are two springs and a pair of brass posts with >>>>> rubber washers on them. >>>>> >>>>> My guess is that this area is completely full of tar. Let machine >>>>> cool, undo that cylinder, take note of part location and orientation and >>>>> boil it all in cafiza, probably will take some scrubbing too. Potentially >>>>> when you do this you'll remove tar that kept the rubber washers sealing - >>>>> they may have turned hard by now, mine were like bakelite. >>>>> >>>>> Probably best approach is to undo that lower cylinder and clean out >>>>> the major tar but don't clean those brass pieces and their rubber ends >>>>> until you have some new ones in hand? If those rubber washers can't seal >>>>> you won't be able to make brew pressure and then no espresso... >>>>> >>>>> The whole thing is super simple, you'll see, but since you haven't had >>>>> this apart before you should probably plan to do the top as well, order >>>>> new >>>>> brew lever seals. >>>>> >>>>> On Thursday, July 29, 2021 at 8:39:49 AM UTC-7 HowardG wrote: >>>>> >>>>>> >>>>>> My 11-year-old Brewtus (III-V with vibration pump) has developed an >>>>>> issue where it has a tendency to not fully depressurize the grouphead >>>>>> after >>>>>> pulling a shot. After the shot is completed and I lower the lever, I >>>>>> notice >>>>>> that the amount of water expelled from the bottom of the grouphead (into >>>>>> the tray) has recently been much less than previous operation. As a >>>>>> result, >>>>>> pressure remains inside the brew basket such that when I twist it off >>>>>> there >>>>>> is a small explosion of water and grounds. Sometimes the result is not >>>>>> so >>>>>> dramatic, but the amount of water discharged from the bottom of the >>>>>> group >>>>>> head is still small and the puck is quite soggy. >>>>>> >>>>>> Any suggestions? >>>>>> >>>>>> Thanks! >>>>>> >>>>>> Howard >>>>>> >>>>> -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/brewtus/653d6108-0f49-4125-803b-537ac8d6610an%40googlegroups.com.
