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La Cimbali Junior Secondhand Recon

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  • #16
    Re: La Cimbali Junior Secondhand Recon

    Here is a pic of the dosor handle/arm. I think its meant to have a plastic sheith, but not sure.

    Oh and AM yeah the blades are blunt, so i am just trying to get her all cleaned up and then will purchase some when new funds come in ;D
    Still deciding on the online retailer for $55 versus the genuine $120 burrs though.... hmm

    Thanks again for all your help guys

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    • #17
      Re: La Cimbali Junior Secondhand Recon

      Hi,

      just had a glance into this thread. There is some conflicting information out there on this grinder and some confusion about models be it Cimbali MAX, Cimbali Junior, Cimbali DRM or otherwise I think some web threads get off track and maybe miss name them. So measuring the burrs is important.

      I will try and take a shot of the bottom of the doser on one of my DRM Cimbalis as your doser looks the same from what I remember of the underside. Just checked there is one on the linked thread.

      Be careful lifting the slinger from the grinding chamber if it is brass as the clearance is important to keep it sweeping so dont overdo the force thing.

      Here might be useful in the meantime http://coffeesnobs.com.au/YaBB.pl?num=1222432676

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      • #18
        Re: La Cimbali Junior Secondhand Recon

        Thanks mate.
        That helps alot. Yeah my grinder is a Junior as it has the flat burrs and looks just like the max but with a shorter hopper.

        I am assuming they use the same parts in the hopper?
        So will be interesting to see how yours looks.
        How did you take the dosing vanes off for cleaning, do you undo the nut at the bottom of the doser chamber and lift them out the top?

        Thanks mate

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        • #19
          Re: La Cimbali Junior Secondhand Recon

          I have never undone the nut at the bottom of the doser as I could see bits going SPRONG. Undoing the doser adjustment knob from the chamber allows the removal of the spider etc. It is a bit awkward to do but that is how I went about it.

          The spring that is broken on yours from memory is just connected to the shot counter (just take it off not needed). You are missing the spring for the doser lever which is visible in the shots on my thread. Also yes there is a plastic sheath over the doser lever. For spares maybe try Aroma coffee in Sydney as they had a heap sold on the Bay of Evil.

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          • #20
            Re: La Cimbali Junior Secondhand Recon

            Hey guys

            My restoration is coming along slowly but nicely.
            Top Burr fitting before clean

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            • #21
              Re: La Cimbali Junior Secondhand Recon

              Top Burr fitting after clean. I soaked it a warm citric acid solution for about 30mins, then cleaned off what i could. then repeated process and it came up great!

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              • #22
                Re: La Cimbali Junior Secondhand Recon

                The dosor with bits removed, thanks to "Beanflying". Thats what i will be cleaning next, the plastic surround.

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                • #23
                  Re: La Cimbali Junior Secondhand Recon

                  Here is the state of my kitchen benchtop. Covered in cleaned cimbali bits. Dora and alot of toothpicks helped alot in cleaning the threads ;D

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                  • #24
                    Re: La Cimbali Junior Secondhand Recon

                    Here i have a problem.
                    I was going to leave the bottom burr alone until i could get a new burr set but, I have noticed extensive coffee buildup on the side of the spinning bottom burr.

                    I tried to undoing the burr screws but they are in so tight i cant unscrew them without the burr turning. So I am thinking of undoing the nut to remove the burr seat, to remove burr and "maybe" replacing the bearings while i am at it.  

                    So...
                    1. does anyone has a pic/description of where the bearings are located and,

                    2. How do you get the nut off (in pic below)? Do i need something to hold the pole connected under it?  :-?

                    3. Do you guys recommend greasing the threads? A friend was recommending a food grade oil/lubricant instead of grease as he said it would attracts grinds.  

                    Thanks guys  

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                    • #25
                      Re: La Cimbali Junior Secondhand Recon

                      No grease plenty of coffee oils floating around to stick stuff to without helping !!!!!!!!!

                      That bolt is actually reverse threaded so if you are trtying it normally it just aint going to work You will also find a crud buildup between the brass and the lower burr and dont lose the drive pin from the shaft when you get it apart.

                      Bearings are a standard 6000 series one so any industrial place should be able to help out. To remove them a soft faced hammer and a good bearing puller is really needed. Also a pair of right angled internal circlip pliers. In an ideal world a small hydraulic press for reassembly.

                      For putting on the new bearings I made do with placing the whole rotor of the motor (armature) in the freezer to shrink the steel shaft just a touch and the bearings just needed a light tap on. Make sure it is properly dry before reassembly of the motor and firing it back up. Also watch out for the wave washer sitting under the bearing.

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                      • #26
                        Re: La Cimbali Junior Secondhand Recon

                        Thanks mate.
                        Hmm replacing bearings sounds a bit more involved than I thought... I might give it a miss unless im feeling brave. It is meant to only be 3 years old... Do you think they would need replacing?

                        Also if i just undo that bolt to remove the brass assembly do i need to worry about much, and what did you do to stop the whole assembly spinning whilst you undid the bolt?

                        Thanks mate, really appreciate the advice

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                        • #27
                          Re: La Cimbali Junior Secondhand Recon

                          I replaced bearings in both of my DRMs 6 months ago as one of them was fairly noisy so until you can hear a rumble or have excessive end play with no beans I wouldnt worry to much. To stop the rotor from turning I made a specially "calibrated stick" to lock the vanes on the brass slinger and sit as far in as it could go (less risk of bending the vanes ) Attach socket to bolt and give it a couple of short sharp whacks with a hammer if needed.

                          If you can get the couple of tools for a bearing change and you are stripped this far down I would do it for the sake of the few $$ worth of bearings. Or Find a mate you does his own engine work or even a guy with a backyard lathe they will almost certainly have the gear and a six pack goes a long way for payment

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                          • #28
                            Re: La Cimbali Junior Secondhand Recon

                            Turned it on with the whole outer assembly removed, and it seemed to have a healthy hum. No rumbling or weird sounds. Only thing was a faint higher pitched whir sound as it powered down. This normal?
                            Thinking at present to skip the bearings...

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                            • #29
                              Re: La Cimbali Junior Secondhand Recon

                              Hey Latte,

                              I was recently fortunate enough to get my hands on a second hand jr grinder also. I havent yet pulled it to pieces but stripped it down enough to clean out the gunk. The whirring sound you mention - not sure if its the same but mine grinds away nicely and when the beans are almost gone the frequency of the whirring increases and you can tell that the grinder has just done the last of the grinding.
                              The sound does change a bit when powering down (at least on the one I have).
                              Cheers
                              Mouldy

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                              • #30
                                Re: La Cimbali Junior Secondhand Recon

                                Thanks for the info mate, seems like my grinder is normal then.
                                I will make sure I am a detailed as possible with the rest of the strip down so it comes in handy for ya if you decide to strip yours.
                                I recommend doing it as the amount of crud I have removed is shocking

                                So how old is your junior?
                                Would be interesting to see if they are the same

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