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Jura Impressa C E F type grindstones replacement

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  1. Jura Impressa C E F type grindstones replacement, Jura Impressa Type C E F opening procedure: stap 1, afbeelding 1 van 1
    • The instructions are suitable for nearly every model of Jura and similar ones e.g. AEG and Krups.

    • Unplug!

    • Remove the water reservoir.

  2. Jura Impressa C E F type grindstones replacement: stap 2, afbeelding 1 van 3 Jura Impressa C E F type grindstones replacement: stap 2, afbeelding 2 van 3 Jura Impressa C E F type grindstones replacement: stap 2, afbeelding 3 van 3
    • On the rear side is an obstacle: four "oval head screws" looking like rivets. You can remove them using a special oval drive bit. They are sold at iFixit with the tool kits as well as some Jura suppliers or somewhere in the internet. Jura wants to keep us out of our own machines!

    • Using an oval head bit you can screw them out. If you haven´t got one you can carefully use pliers. It is a good idea to later change the screws for normal ones.

    • You can even create your own specialty tool

    • Beneath both top side covers are two Torx T15 screws. Remove those. Now lift off the whole top cover. Sometimes it jams and you have to use a bit of force.

    • The side covers must be pushed backwards by about 1 cm. Sometimes this is a little bit difficult to move. If necessary, wedge a plastic opening tool into the gap between the side covers and the front panel. The rear cover can be easily removed.

  3. Jura Impressa C E F type grindstones replacement, Jura Impressa C E F models grindstone replacement: stap 3, afbeelding 1 van 1
    • The instructions apply to almost all devices from Jura and similar devices from AEG, Krups. The success of the repair is striking!

    • The picture shows the old grind stones on the left and the new ones on the right. They consist of a grinding ring and a grinding cone.

    • For this repair, the side parts do not necessarily have to be removed.

  4. Jura Impressa C E F type grindstones replacement: stap 4, afbeelding 1 van 2 Jura Impressa C E F type grindstones replacement: stap 4, afbeelding 2 van 2
    • Pull the grinder adjuster up. Note the setting, it is best to take a photo of it.

    • The screws that hold the coffee container are located in two recesses. First clean, then loosen. The protective cover over the grinder does not need to be removed.

  5. Jura Impressa C E F type grindstones replacement, Removing The Grinder Ring: stap 5, afbeelding 1 van 3 Jura Impressa C E F type grindstones replacement, Removing The Grinder Ring: stap 5, afbeelding 2 van 3 Jura Impressa C E F type grindstones replacement, Removing The Grinder Ring: stap 5, afbeelding 3 van 3
    • Now the grinder is free. Again take a picture, then pull out the axis of the adjuster with moderate force.

    • This adjuster may not be present on some models.

    • Depending on the model you will find a silicon sealing on top of the grinder ring, remove it.

    • Watch the fabrication signs , here green. This alignment must be restored later. Now turn the great black gear about 90 degrees counterclockwise. The grinder ring is free and can be lifted off.

  6. Jura Impressa C E F type grindstones replacement, The Grinder Cone: stap 6, afbeelding 1 van 3 Jura Impressa C E F type grindstones replacement, The Grinder Cone: stap 6, afbeelding 2 van 3 Jura Impressa C E F type grindstones replacement, The Grinder Cone: stap 6, afbeelding 3 van 3
    • In the next step be very careful not to loose these three springs, balls and cartridges.

    • The grinding cone is fastened with a long Torx T20 screw. The screw head is often covered with remnants of coffee beans. Expose the head and turn the screw out counterclockwise.

    • Now the bean feeder (the small white snail) can be removed. The grinder cone and drive can now also be lifted up carefully.

  7. Jura Impressa C E F type grindstones replacement, Cleaning: stap 7, afbeelding 1 van 2 Jura Impressa C E F type grindstones replacement, Cleaning: stap 7, afbeelding 2 van 2
    • The grinder is usually filled with old, sticky coffee grounds. Clean everything carefully for an excellent coffee aroma.

    • Gently lift the felt ring around the drive shaft with a needle, then wipe it clean with a damp cloth. Do not attempt to wash it, as there is a risk that it will swell. When first used, turn it over with the clean side up.

    • Clean the inside of the grinder with a brush and damp cloth, and the blades with a dishwashing brush. Ensure it is properly dried before use.

  8. Jura Impressa C E F type grindstones replacement, Change The Grinder Ring: stap 8, afbeelding 1 van 3 Jura Impressa C E F type grindstones replacement, Change The Grinder Ring: stap 8, afbeelding 2 van 3 Jura Impressa C E F type grindstones replacement, Change The Grinder Ring: stap 8, afbeelding 3 van 3
    • Push both of the small latches alternately. Then the ring cover should come out.

    • Two clamps hold the grinder ring in its place, push them aside and it should come free.

    • Again clean everything. Press the new ring and cover in its place. With that the grinder ring is exchanged.

  9. Jura Impressa C E F type grindstones replacement, Change The Grinder Cone: stap 9, afbeelding 1 van 1
    • First insert the cleaned driver, then the three sleeves, springs and balls. Now fit the grinding cone on the three balls.

    • Then fit the auger, screw in central screws. When screwing in, push the cone downwards and make sure that everything meshes.

    • This screw turns into plastic. If it doesn't fit properly, the thread will be damaged. So first turn the screw counterclockwise until you feel that the first thread is engaged. Then tighten it turning clockwise.

  10. Jura Impressa C E F type grindstones replacement, Reassembling: stap 10, afbeelding 1 van 1
    • Insert grinding ring. The black gear is turned to the right again until the three marks are aligned. Then reinstall the adjuster drive shaft as it was originally.

    • The adjustment oft the new grinder burrs musst 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.

    • It is a good idea to check if the grinder rotates freely. You can remove the meal hopper and look at the millstones from the side.

    • Then install the remaining parts in reverse order.

    • You can set the grinding degree nicely by placing an empty roll of toilet paper perpendicular to the open mill and filling it with a few coffee beans. Plug in the plug (be careful!), choose a cup of coffee and watch as the coffee grounds fall out of the grinder.

  11. Jura Impressa C E F type grindstones replacement, Before - After: stap 11, afbeelding 1 van 2 Jura Impressa C E F type grindstones replacement, Before - After: stap 11, afbeelding 2 van 2
    • These two pictures are no fake: Before repairing the grinder the coffee is thin and transparent. With new stones the coffee is strong and has a fine crema. The repair was a real success!

Conclusie

To reassemble your device, follow the above steps in reverse order.

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