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Jura J models motor drain valve into operation

Introduction

If the drain valve is not opened properly, the most likely error pattern is as follows: after rinsing, the pressure is not released from the brew group, the brew group motor attempts to work and will sound very strained. This process repeats itself a few times. The drainage motor can be removed quite easily. Often it can be restarted and there is no need to replace it.

Note: the J5 does not have a drain motor, but an electromagnet. Use this guide to replace it.

What you need

  1. Jura J models motor drain valve into operation, Jura Capresso IMPRESSA J5 opening procedure: step 1, image 1 of 1

    • Unplug the power cord!

    • Remove the water tank and the drip tray. Remove all coffee beans from the storage container.

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  2. Jura J models motor drain valve into operation: step 2, image 1 of 3 Jura J models motor drain valve into operation: step 2, image 2 of 3 Jura J models motor drain valve into operation: step 2, image 3 of 3

    • Flip open the lid of the bean compartment.

    • Unscrew the two slotted screws inside the bean compartment. The screws have a rubber washer and will not come out completely.

    • Remove the bean compartment.

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  3. Jura J models motor drain valve into operation: step 3, image 1 of 3 Jura J models motor drain valve into operation: step 3, image 2 of 3 Jura J models motor drain valve into operation: step 3, image 3 of 3
    Tool used on this step:
    iFixit Precision 4 mm Screwdriver Bit
    $2.99
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    • The top cover is fastened with oval head screws. Unscrew them.

    • These screws have an oval head that makes them look like rivets (picture 2). You need to use a special bit - also available at iFixit - for their removal. Here a DIY guide. If the right bit is not available, it could be done with a pair of needle nose pliers. Jura wants to keep us out of our own machines!!!

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  4. Jura J models motor drain valve into operation: step 4, image 1 of 1

    • Also remove the two oval head screws underneath the ground coffee compartment lid.

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  5. Jura J models motor drain valve into operation: step 5, image 1 of 1

    • Now you can pry up the top cover all around.

    • Remove the top cover. This often requires a little force.

    • Use plastic tools to avoid scratching your device.

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  7. Jura J models motor drain valve into operation: step 6, image 1 of 2 Jura J models motor drain valve into operation: step 6, image 2 of 2

    • Turn the device with the back facing you.

    • Turn the Jura label a few degrees counterclockwise. If it's hard to do, use a small suction cup.

    • Remove the Jura label.

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  8. Jura J models motor drain valve into operation: step 7, image 1 of 3 Jura J models motor drain valve into operation: step 7, image 2 of 3 Jura J models motor drain valve into operation: step 7, image 3 of 3

    • Underneath the label you will find two Torx T15 screws. Remove them.

    • Carefully pull the top of the chrome cover slightly outwards, then push it down and put it aside.

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  9. Jura J models motor drain valve into operation: step 8, image 1 of 1

    • Remove the Torx T15 screw on the side panel with the water tank.

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  10. Jura J models motor drain valve into operation: step 9, image 1 of 2 Jura J models motor drain valve into operation: step 9, image 2 of 2

    • Pull the right side panel slightly towards the back.

    • Remove the side panel.

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  11. Jura J models motor drain valve into operation: step 10, image 1 of 1

    • Pull the left side panel slightly towards the back and remove it.

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  12. Jura J models motor drain valve into operation, Get motor drain valve to work: step 11, image 1 of 2 Jura J models motor drain valve into operation, Get motor drain valve to work: step 11, image 2 of 2

    • The drainage motor on the J6 and following is fastened with two Torx T15 screws. Unscrew those and pull out the motor.

    • For now leave the cables connected to the motor. Trigger a flush and observe if the pin moves back and forth. If not, the gearbox is blocked. You may get it going again by the following steps

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  13. Jura J models motor drain valve into operation: step 12, image 1 of 3 Jura J models motor drain valve into operation: step 12, image 2 of 3 Jura J models motor drain valve into operation: step 12, image 3 of 3

    • The gearbox (the black plastic part) attaches to the metal engine block with four metal tabs. Straighten the tabs with a small screwdriver.

    • Pull the gearbox off the engine block.

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  14. Jura J models motor drain valve into operation: step 13, image 1 of 1

    • Turn the armature of the motor while holding the pin. Check whether the pin moves back and forth.

    • This may already have released the blockage. Grease the worm (and the pin) again a little. Position it so that it protrudes about 3 mm.

    • Reassemble the motor and bend the retaining tabs on the metal housing until it is tight.

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Conclusion

Work through the steps in reverse order to reassemble your device.

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4 Comments

Super, vielen Dank. Ich habe mit dem Tipp meine Jura A1 wieder hinbekommen. Nach dem Tausch der Brühgruppe konnte die Jura keinen Kaffee mehr brühen. Das Pulver landete trocken im Tresterbehälter. Das gesamte Wasser in der Schale.

Der Stift des Drainageventilmotors schaute auffällig weit heraus. Daher musste der Motor überprüft werden, da offenbar das Drainageventil auf Daueroffen eingestellt war.

Allerdings war der Motor nicht defekt. Nach dem Ausseinandernehmen des Motors wie oben beschrieben, funktionierte es wieder. Wichtig ist das der Stift wieder gängig gemacht wird und die Schnecke (nicht der Stift) exakt 3mm hervorsteht. Bei mir war sie komplett im Getriebe verschwunden. Hoffe, ich kann anderen mit diesem Problem weiter helfen.

coffeeNERD - Reply

Was für ein guter Tipp! Vielen Dank!!

Maria Parker -

Good morning, I have a Jura Z6 and the problem I am having is that the drain valve is permanently open to the drain, because the pin is fully extended even with the machine off. I am not sure how this motor works but seems to be not right, Could you please give me your opinion about how to fix it?

Thank you,

Robinson

Robinson Mejia - Reply

Try to fix it using this guide, it's rather easy and should work after repair. If not replace it with a new one.

VauWeh -

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