Jura Impressa C E F modellen maalstenen vervangen.

Stap 1

Deze handleiding is geschikt voor bijna alle Jura-apparaten en gelijksoortige apparaten van onder meer AEG en Krups.
Haal altijd eerst de stekker uit het stopcontact!
Verwijder het waterreservoir.

Stap 2

De achterkant van het apparaat bevat een obstakel: vier schroeven met ovale kop die eruitzien als klinknagels. Ze kunnen worden losgedraaid met speciaal gereedschap. Bij iFixit is het ovalen bitje onderdeel van gereedschapscollecties, maar je kunt het is ook verkrijgbaar bij Jura-dealers of te vinden op internet. De fabrikant wil de toegang bemoeilijken!
Draai de ovale schroeven los met geschikt gereedschap. Als je er geen hebt, gebruik dan een tang, maar ga voorzichtig te werk! Het is een goed idee om ze later te vervangen door “normale” schroeven.
Je kunt zo'n stuk gereedschap gemakkelijk zelf maken.
Onder de twee deksels zitten twee schroeven, meestal TX 15. Draai ze los. Til de bovenkant op en verwijder ze. Het is mogelijk dat ze een beetje klemmen.
Duw de twee zijdelen ongeveer 1 cm naar achteren. Vaak klemmen deze onderdelen. Steek zo nodig een plastic tool in de spleet tussen de voorkant en de zijdelen en maak de spleet voorzichtig wijder. Daarna is het als het goed is makkelijker om de zijdelen te verwijderen.

Stap 3

De instructies gelden voor bijna alle Jura apparaten en vergelijkbare apparaten van AEG en Krups. Het succes van de reparatie is verbazingwekkend!
Op de foto zie je links de oude maalstenen en rechts de nieuwe. Ze bestaan elk uit een maalring en een maalconus.
De zijpanelen hoeven niet per se verwijderd te worden voor deze reparatie.

Stap 4

Trek de stelschroef van de slijpmachine omhoog. Noteer de instelling, je kunt er het beste een foto van maken.
De schroeven die de koffiecontainer vasthouden zitten in twee uitsparingen. Maak ze eerst schoon en draai ze dan los. De beschermkap over de molen hoeft niet verwijderd te worden.

Stap 5

De molen is open. Maak een foto van de instelling en trek dan met een beetje kracht de as met het tandwiel van de stelschroef omhoog.
Afhankelijk van het model is deze stelschroef mogelijk niet aanwezig.
Afhankelijk van het model zit er nog een siliconen afdichting op de maalring. Trek deze er gewoon naar boven af.
Let op de fabrieksmarkeringen, hier groen. Dit moet bij de montage opnieuw worden afgesteld. Draai het zwarte ringwiel ongeveer 90 graden tegen de klok in. De complete maalring met insert is nu vrij en kan naar boven worden getrokken.

The screw in my solo grinder is different. It looks more like a black ball than a screw. Any suggestions on how to remove that?

Reni -

Oh yes. On some models is a plastic cap. Insert a needle between cap and grindstone and pry it up, then remove it.

VauWeh -

Stap 6

Wees voorzichtig in de volgende stap zodat de drie kleine veren, kogels en hulzen niet verloren gaan.
De maalconus wordt vastgezet met een lange Torx T20 schroef. De schroefkop is vaak bedekt met resten van koffiebonen. Leg de kop bloot en draai de schroef linksom los (linkse draad)
De boneninvoer (de kleine witte schroef) kan nu worden verwijderd. De maalkegel en aandrijving kunnen nu voorzichtig omhoog worden getild.

Grinder screws are often left-hand screws. I assume this is not the case since it isn’t noted.

Lisa W -

Yes, that's true with Jura and others: open it counterclockwise . And you're right: the grinder screws in Saeco machines is left-handed, open it clockwise.

VauWeh -

Stap 7

De molen is meestal verstopt. Alles moet weer goed schoon zijn, zodat de smaak van de koffie weer tot zijn recht komt.
De vilten ring rond de aandrijving kan voorzichtig worden opgetild met een naald en vervolgens worden schoongemaakt met een vochtige doek. Niet wassen, anders zwelt het op. De eerste keer gewoon omdraaien zodat de schone kant naar boven ligt.
De binnenkant van de molen kan worden schoongemaakt met een borstel en een vochtige doek, de aandrijving met een afwasborstel en warm water. Goed laten drogen!

What is your process for cleaning the felt ring once removed from the drive access?

roger henry -

I use a damp rag with a little dishwashing liquid. Another option is to simply turn the ring upside down.

VauWeh - 14/11/22

Cleaning the felt ring ruined it.

roger henry -

Uuu. How did you do that? You can buy it e.g. here.

VauWeh -

Do you know any vendor in the US that sells the felt washer?

Jan Don -

As I´m german, sorry no. Perhaps they do: https://www.jura-parts.com . And have a look for Capressa Infinity grinders, it´s the same. Or make one DIY using a piece of felt.

VauWeh -

the water expanded the felt ring and it did not shrink back once dry.

Can you recommend a parts place in the US to get this felt washer? The link you sent does not show that it would fit the

Jura ENA4.

-Roger

roger henry -

In this case things are different. Did you really replace the grindstones? Or only clean the device? When my informations are right the ENA 4 is equipped with a "Aroma +" grinder, which means special grindstones, not the normal ones. As far as I know Jura does not sell them separately, only the complete grinder. I think, the felt ring will fit, but I don't know where to buy in the US. I think, the grinder also will work without the ring or cut one of a piece of felt. Good luck!

VauWeh -

If you can't find the felt ring, you have a few options, make one, beg the German jura parts seller to sell you one, or search aliexpress for felt ring, felt washer, felt gasket.

jimmylasvegas -

Hello. The piece where the springs and ball bearings are housed: where can I buy a replacement, please if you know.

Thanks

Farhan Miah -

Do you mean this one? Don't know, If they ship to your country, ask them.

VauWeh - 30/01/23

Same thing happened with my felt ring. It expanded and never retracted after washing. Did anyone figure out where to buy it in the US?

Jan Don -

The Capresso Infinity grinder should be the same, so look for someone who supplies its parts.

VauWeh -

Make one, lots of materials at your local hobby store or online. https://www.aliexpress.us/item/325680549...

jimmylasvegas -

If you can't find it a wool washer from Michael's or Joann etc will work. You can also get them online at aliexpress and ebay.

jimmylasvegas -

Stap 8

Druk de twee kleine vergrendelingen in en druk ze afwisselend naar links en rechts in.
Twee clips houden de ring vast, duw deze gewoon weg en hij is vrij.
Alles wordt schoongemaakt, dan wordt de nieuwe ring erin gedrukt en het deksel weer op zijn plaats geklikt. De maalring is nu teruggeplaatst.

Stap 9

Plaats eerst de schoongemaakte meenemer, dan de drie hulzen, veren en kogels. Plaats nu de maalkegel op de drie kogels.
Plaats vervolgens de toevoerschroef en draai de middelste schroeven erin. Druk bij het vastschroeven de conus naar beneden en zorg ervoor dat alles goed vastzit.
Deze schroef draait in plastic. Als hij niet goed vastzit, zal de schroefdraad breken. Draai daarom eerst tegen de klok in totdat je voelt dat de eerste schroefdraad vastklikt. Draai hem dan vast.

I think the balls have to go first. That way the middle stone can slip if the grinder is blocked.

That is also what the exploded diagram that circulates online seems to show.

Comments appreciated.

Mark - 06/09/18

I did this fix many times: the balls are on top oft the springs! They do fit into the corresponding holes in the underside of the cone, as you can clearly see in the picture. If the cone is stopped by e.g. a little stone, the balls come out of the holes saving the motors life.

VauWeh - 06/09/18

Thank you for the explanation! It is clear now.

Mark - 07/09/18

Everything is in right place

I push as hard as I can. But it seem the that the screw is turning in the void. I remove all the part to see if the hole was strip , the screw seem to enter firmly

jason warren - 17/12/19

In this case I fear, you have to buy a new grinder. Replacing it is straightforward.

VauWeh - 17/12/19

i find a bit longer screw and it work but now the black ring is spinning in the void. the black outer ring and the white outer ring are suppose to be turning together ?

jason warren - 17/12/19

I have one more spring and ball, that are half a diametr of the rest. Can’t figure out where do they go?

Aleksandr Sevastjanov - 08/02/20

Might be the ball and spring beyond the big black gear, makes the “click", when turning it.

VauWeh - 08/02/20

Thanks. I followed the steps on the Nivona grinder and replaced the springs and the balls in the exact order. Now the grinder can only grind finely and this is too find for my brewer and hence my espresso machine is clogged. Can anyone see what when wrong after the reassembly?

haydaru - 29/08/20

I think the parts don't fit together properly. First: There are three holes on the bottom of the cone that the balls must fit into. Second: at the bottom of the helix are two tabs that must fit into corresponding grooves.

VauWeh - 29/08/20

How tight should you screw this screw in? Until it can no longer turn the screw driver?

roger henry -

Short answer: yes, not to hard. The screw ist spring loaded and cannot move easily. Be sure that the helix fits.

VauWeh -

Did you adjust the cone by turning the black gear and the "fourteen clicks" method?

VauWeh -

hello, changed the burrs and the coffee was too fine, clogging the machine. Haven't read correctly your tuto !!

The adjustment oft the new grinder burrs must not necessarily be the same as the old ones. You can approximately find the mean position, which was marked before, by turning the outer ring as far as possible clockwise, then turning it fourteen clicks backwards.

So you should not reallign the green mark , but use the 14 clicks from the grinder full closed for medium.

En remontant les meules, on serre jusqu’à toucher les 2 cônes en tournant dans le sens des aiguilles, puis 14 clics dans le sens inverse pour avoir le réglage medium. Surtout si on a serré la vis centrale différemment du montage initial.

intimepop - 21/05/23

Stap 10

Plaats de maalring. Draai het zwarte tandwiel weer naar rechts totdat de drie markeringen uitgelijnd zijn. Plaats vervolgens de aandrijfas van de stelschroef weer in de oorspronkelijke positie.
Nieuwe maalstenen hebben echter niet noodzakelijkerwijs dezelfde instellingen als de oude. Je kunt een goed idee krijgen van de instelling van de maalsteen door de instelring eerst zo ver mogelijk naar rechts te draaien en dan veertien inkepingen naar links. Dit is ongeveer de centrale instelling die oorspronkelijk was gemarkeerd.
Het is goed om te controleren of de molen vrij draait. Je kunt de vultrechter verwijderen en de maalstenen vanaf de zijkant bekijken.
Zet vervolgens de overige onderdelen in omgekeerde volgorde in elkaar.
Je kunt de maalgraad mooi afstellen door een lege wc-rol verticaal op de open molen te leggen en deze te vullen met een paar koffiebonen. Steek de stekker in het stopcontact (voorzichtig!), kies een kopje koffie en kijk direct hoe het koffiedik uit de molen komt.

i turn the black gear but the white one doesnt turn any more , they are suppose to turn together?

jason warren - 17/12/19

By turning the the black gear the grinder ring moves a little bit up and down and changes the grinder setting. The white ring holding the grinder ring indeed does not move. Or do you mean the big white gear beyond the black one? If the black and the white gears are not connected, press firmly the black gear down, until it clicks in.

VauWeh - 17/12/19

i remove a part the black and the white ring, it seem that there was black pin on the black ring that was maybe glue to the white ring ? but it seem broken or unglue , it whitish on the tip like if it was broke

unless i see nothing that make those 2 ring jam together. maybe i should try to reglue with a dot of epoxy ?

jason warren - 17/12/19

Buy a new one, it's cheap! It ist just clicked in. Good luck.

VauWeh - 17/12/19

Thanks ! Alot!

jason warren - 17/12/19

Super Anleitung. Die neue Mahlsteinen war deutlich anders als die alten. Ich habe die Einstellring so weit wie möglich nach rechst gedreht, dann 14 Zähnen nach links, wie beschrieben. Die Maschine malt jetzt perfect. Danke.

Joe Crites - 29/01/20

if you move the ring fourteen clicks back, it means maximum opening or closing of the setting. Hope you understand what I mean. With these fourteen clicks, how to set this adjustment stick

Jaroslaw Tylutka - 07/01/21

First turn the ring clockwise so that the grindstones sit tightly on each other. Then open it by turning the ring counterclockwise for fourteen clicks. This is a medium setting. You can do a fine adjusting later. Watch the grinder in action using the toilet-paper-roll method. Good luck!

VauWeh - 07/01/21

Ok. Thank you very much.

Jaroslaw Tylutka - 07/01/21

I am looking to do the same replacement. The instructions looks great but I cannot find anywhere where to buy the two pieces grinder compatible for a ena micro 1. Any suggestions where I could buy that?

thomas herby -

This is indeed difficult. The grinder of the ENA Micro 1 is special. So far I have unfortunately only found the complete grinder, very expensive. (~ 150€). A reason not to buy this model, but that's no use to you anymore.

VauWeh -

or a cheaper used one (~70€): https://www.jura-ersatzteile-shop.de/mah...

VauWeh -

you can get that on eBay and aliexpress/alibaba. if you like take out the burrs and and measure them and I can tell you if they are the common ones being sold everywhere.

jimmylasvegas -

In the meantime, it is available.

VauWeh -

If you mark and line up all the rings as well as the spot on the “coarse -fine” adjuster and return them to the exact position at the end, do you have to bother about turning the clicks counterclockwise at the end.

Ken Tuerk -

Well, try it. Normally, everything should work fine and you can check the result on the grind. But the method with the 14 clicks is really simple.

VauWeh -

Great video. Ma problem is, there were only one mark on the rings, and I didn't mark the rings. Will the 14 clicks be enough initial adjustmet? Why is part of the black ring raised, and where does it go in relationship to the coffee shute? Thanks for any help

fred4ernst -

Did you remove the black ring? If the (green?) mark on the outer white ring is on 12, the middle of the raised part is on 8, as far as I remember. It serves as stop, there is a counterpart in the bean reservoir. Not really important and not in every model. And yes, the 14 clicks work fine. Try the grinder open, putting an empty toilet paper filled with some beans on it.

VauWeh -

Thanks for the instructions. It all worked out, but for me it was easier to remove the whole grinder housing (3 screws) in order to remove the top part (step 7).

Also, before removing the grinder cone and the 3 springs and the 3 balls, a smaller spring and a smaller ball fell off somewhere and I could not figure out where to put them. Again all 3 springs and balls are as you describe but the extra smaller one I left out while re-assembling.

At the end it is a success, but was curious if you knew where these extra parts are from

GA376 -

Sounds like the that's what makes the clicking sound when you adjust the grinder from course to fine.

If you remove the top, black ring with the gear teeth, you will expose the off white plastic, it has holes all the way around,

that where the ball and spring go to make that clicking sound. Not a big deal, I misplaced mine and I've been using the grinder

for a few years now without it. https://www.juraprofi.de/Jura-Ersatzteil...

jimmylasvegas -

@jimmylasvegas is right. This ball is the detent for the adjustment of the grinder.

VauWeh -

I cleaned the grinder because it was dirty and didn't grind well: no coffee output. After everything is cleaned and replaced it is turning free but doesn't grind. There is still no coffee output. I do not understand why the coffea beans do not come through the grinder. Has anybody a soluton?

D.M. van Bruggen -

Thank you! I want to attempt this service after reading your post.

Do the grinding burrs fit an XJ9 Jura? I cannot find the parts at a reasonable price anywhere else. Any advice is very much appreciated

Jon -

You need special grinder burrs, as it is a Aroma+ grinder. In the meantime they are available. I do not know, If they will ship it to your country, at least in europe they do.

VauWeh -

Stap 11

De twee foto's zijn absoluut echt: de koffie voor het vervangen is dun en transparant. Daarna is hij zwart en sterk, met meer crema. Er zijn geen andere instellingen gewijzigd! De reparatie was zeer de moeite waard.

This is very helpful. My question is that when disassembling the unit, a very small ball came loose (not one of the balls under the grinder cone that you flagged). Now my grinder does not adjust for a fine grind so i think the ball was somewhere in the grinder adjustment assembly?

Thanks

Jared Rocco - 18/11/19

Yes. This must be the ball in the grinder adjustment. Have a look to the steps 5 - 7 in the guide for saeco: https://de.ifixit.com/Anleitung/Saeco+Vi..., the grinder is nearly the same. The big black gearwheel can be lifted upwards using a little force and you can see all those little holes - and the ball was sitting under one of them thus keeping the adjuster in position. Hope it helps and you can fix it!

VauWeh - 18/11/19

Do you have a picture of where that tiny spring and ball should be placed back? When I was unscrewing the grinder unit from the body (hadn’t yet disassembled the grinder itself) the little spring and ball hopped out of somewhere and my video didn’t catch where from. I have a Bosch Benvenuto built-in and couldn’t find it in the parts diagram catalog.

Jan Don -

Yes Sir, e.g. here, picture included.

VauWeh -

You lost your balls? there’s 2 ball bearings that make the clicking sound as you adjust the grind. I lost both of mine, never found them again. Anyone know what size they are? you can buy new balls at a local bearing store or on alibaba/ebay.

jimmylasvegas - 22/11/19

Hello VauWeh,

I’ve cleaned my grinder and assembled it back. One thing I can’t restore is that grinder adjuster doesn’t click anymore. Could you please advise something that might affect it? The coffee is perfect but the grinder setting doesn’t stay in place. When it grinds, vibration makes it move towards a more coarse setting.

Poogle Gixel - 18/08/20

Hello, as I mentioned in my answer dated 18.11.2019, I suppose you lost the ball, which makes the clicking sound and holds the position of the big wheel. Sorry, I don't know a solution for that.

VauWeh - 18/08/20

Perhaps the spring and ball for DeLonghi will fit. They are available here.

VauWeh - 18/08/20

Another possibility: buy a used grinder, like this one

VauWeh - 18/08/20

At least I found it here, indeed the same as DeLonghi. Diameter is 3.2 mm.

VauWeh - 18/08/20

Thanks, coffee is black now, and full of aromas but a bit strong !! So take some time before reassembling all , to set the outer ring for default medium grind, not respecting the outside green mark.

Merci le café est maintenant noir et sent très bon. Le réglage de la bague doit se faire avant de tout remonter, pour régler la finesse de monture par défaut. J'allais jeter la machine....

intimepop -

Thank you very much for the clear instructions. I started with just disassembling the grinding unit of my 9 years old Solo and cleaning it. That did not give the results I was hoping for. Bought an new set of grinders, installed following these instructions and the result is fantastic. Hoping for another 9 years on this machine with the help of the repair guides on this site (of which I have successfully used a couple now).

pietpeer -

It is always a pleasure for me when my guide could help.

VauWeh -

ou trouver les meules pour une caffeo solo ?

Stéphane PIGOT -

Ce sont les mêmes que pour Jura, affichées dans l'introduction.

VauWeh -

I followed these steps (helfpul, thank you). I was careful to set the grinding ring back to the standard setting as described, however when reassembling, the coffee comes out watery. Sure enough I take out the drip tray and the grounds are very large.

I did notice that the burr and the ring were quite damaged/ rusty.

Would you suggest that the grounds being far too large is more likely to be due to the reassembly being incorrect, or the stones being damaged/ worn?

Jimbo -

@jimbo27280 As a rule of thumb: if the stones have more than 10,000 cups on them, they should be replaced. But if you really see that they are broken, replace them in any case. It's worth the money and the effort!

VauWeh -

Just replace the burrs, you can find them on eBay and aliexpress. I can't post links here but they cost between $10-35 shipped. They look identical to the originals.

jimmylasvegas -

Jura Impressa C E F modellen maalstenen vervangen.

Inleiding

Gereedschap

Onderdelen

Stap 1

Stap 2

Stap 3

Stap 4

Stap 5

Stap 6

Stap 7

Stap 8

Stap 9

Stap 10

Stap 11

Auteur

VauWeh

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