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What have I done? (Cimbali Jr thread)

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  • magnafunk
    replied
    So many hours work and it looks the same as it did in the first photo I posted!

    Edit: except it has that beautiful glowing green light :-)

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  • magnafunk
    replied
    Well, it has been a while between shots, but the Cimbali is finally taking pride of place on the brew bench! The leak from the dosing chamber just needed a new washer and o-ring. I think that was the last thing to sort out.

    The steam wand drips a little so will rebuild that eventually, but for now I just want to enjoy it. It's going to take some practice steaming milk,this thing is an absolute beast! May need to hit up coffee parts for some different tips.

    Thanks everyone for all the great advice and Chris and Pedro for the parts, I may be asking one of you for a quieter pstat soon though!

    Excuse the tablet pic

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  • magnafunk
    replied
    Oh no, don't do that, yours may start leaking too!

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  • ausdb
    replied
    Hi MF, I think I have a similar problem too some times but mine seems to be more time spent on forums than actually doing things.

    I bought it as one of the group collar bolts had sheared and the steam valve leaks a little. I've just started to tear it down and noticed that the boiler which had been repaired once before may also still be leaking but that's not insurmountable as I'm a fridge mechanic by trade and its a copper boiler.

    I wasn't planning on pulling the dosing chamber completely apart to descale it, but if you do want some pictures of what the washer /O-ring looks like I am more than happy to.

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  • magnafunk
    replied
    She's running in my shed but have not got the doser to stop leaking yet. I reckon it is just a case of getting a thick enough o-ring, problem is, when I am not busy, I am lazy! What issues does yours have? It was all pretty straightforward, especially with the help around here (thanks everyone!)

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  • ausdb
    replied
    Hi magnafunk, did you get your machine up and running yet?
    I think I need to start a new thread titled "What have I done too, Cimbali Jr" as I've just bought Sticklebacks broken one to try and get going
    Last edited by ausdb; 1 September 2014, 01:06 AM. Reason: eye karnt spel ryt

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  • magnafunk
    replied
    Slightly embarrassing but I think it is just one washer missing that was in my box of bits. Have half filled the chamber, will go out for dinner and see if it has leaked when I get home. Thanks again

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  • Javaphile
    replied
    Hard to say from the pics included but you would need at least one if not two washers. One between the nut and the chamber for sure I would think, and possibly another underneath the chamber. With-out at least the one you won't have a watertight seal there. Any material that is soft enough to form a watertight seal, designed for constant water exposure, and is food safe should do the trick. A silicone one should work nicely.


    Java "Long live Cimbali!" phile

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  • magnafunk
    replied
    OK, it's been a long time between posts, I have had plenty of other things on so this had taken a back burner. I have gotten the old girl reassembled and set up inside and it is making great shots. The water spraying out the group was simply because I was missing a screw! However after getting the grinder dialled in and learning to use the machine (the steam power is phenomenal!) I went and did a few things up the street and came home to about half a cup of water on the bench. Somehow I have lost a piece of the "dosing chamber" somewhere between disassembly, descale and reassembly. The problem is, I don't even know what I am looking for. There don't seem to be any parts diagrams around for this model, coffeeparts don't stock any bits for the dosing chamber and I have called Coffex who don't really sound interested in such an old machine. I was hoping somebody who has the same model can have look at the 2 photos and tell me what I am missing, and hopefully it is something that can be replaced with a generic or jury rigged part.





    There is something missing that goes between the inlet pipe and the nut that holds the chamber in and I have no idea what. Here is a photo of another guys resto that you can see something but it's hard to say what. (Image is from Izambard's rebuild thread on HB)



    Thanks everyone for the help so far.
    Last edited by magnafunk; 19 August 2014, 12:45 PM. Reason: credit due

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  • sprezzatura
    replied
    ... and only because you look very handy at disassembly. A cleaned up group produces such good clean water.

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  • sprezzatura
    replied
    Addendum: replace shower as well.

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  • sprezzatura
    replied
    Group head may be gunked with coffee resin. Commercial-grade back flush may be required. Sometimes I remove the group and soak it in detergent and boiling water to loosen the old coffee oils.

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  • magnafunk
    replied
    Well, I turn it on and hear the pump click and nothing happens. It looks like it takes the same Ulka pump as the Brasilia I have in the shed so I will try and swap pumps after the Brasilia has cooled down enough to disassemble...

    edit: Ok, so it isn't the pump, looks like I just have to have it hooked up to mains pressure to fill the doser. In other good news, it got up to 1 bar pressure and it had only sprung one leak. I released the pressure, put some teflon tape around the errant seal and it is now all sound. However, trying to run a shot through and water is spraying everywhere around the group. Have just replaced the gasket, maybe I have not seated it right, will check it again on next day off, when I will also be dragging the beast inside to see if she works!
    Last edited by magnafunk; 13 July 2014, 10:51 PM.

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  • Mouldy
    replied
    Welcome, just remember not to overfill, you just want to ensure that the element is at least fully covered. That way, when you switch on you can see if auto fill is working without worrying about element.

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  • magnafunk
    replied
    That's a really good idea Mouldy, back to the shed with me.

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