Introduction
The drainage valve is heavily used. The seals need to be replaced from time to time. To do this, the device must be opened, the brewing group removed and dismantled. This is shown here.
What you need
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Remove all attachments, such as the water reservoir, coffee grounds drawer, and bean compartment lid.
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Remove all coffee beans.
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Use the spudger to press in on both sides of the marked area. Then the front cover around the on / off switch is unlocked. You can then lift it up at the front and pull it out at an angle.
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If the side openings for the spudger cannot be found, the model is slightly different. With this version you have to insert the spudger into the gap between the front panel and cover, about 3 cm from the edge and then push it firmly towards the center to unlock. At the same time, lift the cover a little at the front.
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Unscrew the two T15 Torx screws that secure the side panels at the top.
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The lock is located under the Jura badge on the back. Turn it counterclockwise about 20 degrees, then you can remove it.
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Unfortunately, this one is very stuck. Nothing helped with this device, no suction cup or stiff adhesive tape. Here it is opened with a somewhat more rustic method:
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Two small holes were drilled a few millimeters deep, then two small screws were screwed in. The badge could finally be turned and removed with a pair of pliers.
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Lay the machine on its side.
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Pry the side panel about 7 cm from the front edge, about 3 mm high. This will cause the catch to come out of its opening. Use a strong tool, preferably one made of plastic.
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Position of the wedge-shaped notch: 7 cm from the front edge, 1.5 cm from the top or bottom edge.
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Leave the tool in place. Insert an opening pick 7 cm from the front edge so that the wedge-shaped notch can no longer engage in its opening. Pull out the tool.
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In the same way, insert another opening pick on the opposite edge.
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Peel off the silicone tube with a pair of tweezers.
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Unscrew the Torx T20 machine screw in the middle on the left.
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Unscrew the Torx T20 machine screw in the middle on the right.
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Unscrew the Torx T15 screw at the bottom right.
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The brew assembly is now free. Gently tip it out at the bottom and remove it from the device.
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The drive is on the left, the pulp shovel can be seen on the right.
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Remove the two Torx T15 screws that hold the drive in place.
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Remove the two Torx T20 machine screws that secure the drive to the upper piston.
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Lift away the top cover with the coffee dispensing hose
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Pull the metal retaining plate out of the upper piston. Note the orientation for later assembly. The top cover has a pin that must fit into the corresponding hole on the plate.
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Turn the drive until it detaches itself from the brew assembly upwards
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The axis of the lower piston is secured with two ring cotter pins on the left and right. Use a sharp tool and pry out the two cotter pins.
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Push out the axle.
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Now you can turn the mechanics a little to the side and push out the piston. Further dismantling is possible, but not necessary. Make sure that there are two more metal rings at the top under the fork, these should stay in and not get lost.
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Remove the two T8 Torx screws securing the cover.
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Use a plastic tool to pry the cover off and set it aside.
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Now all parts have to be cleaned thoroughly.
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Replace all of the seals and grease them with some food-safe silicone.
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There are two seals on the docking nozzle, one thinner and one slightly thicker, as well as on the water inlet.
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The direction of the lip seals is very important: the lips always point towards the pressure. The middle ring is inserted with the flat side first, then comes the plastic sleeve. The following ring faces out with the flat side. The ring on the other side also faces out with the flat side.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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