Replace Jura ENA micro gear motor

はじめに

The gear motor can break down over time. A common mistake is that one of the fastening eyes tears out. The machine then just rattles loudly. The motor must then be completely replaced.

Take the opportunity to revise the brew group and the drainage valve at the same time!

必要な工具と部品

手順1 Jura ENA micro 9 opening procedure

Replace Jura ENA micro gear motor, Jura ENA micro 9 opening procedure: 手順 1、 1の画像 1

Pull out the power plug!
Remove all attachments, such as the water reservoir, coffee grounds drawer, and bean compartment lid.
Remove all coffee beans.

翻訳

手順2 Top covers

Replace Jura ENA micro gear motor, Top covers: 手順 2、 2の画像 1

Replace Jura ENA micro gear motor, Top covers: 手順 2、 2の画像 2

The top covers do not necessarily have to be removed for all repairs. However, it is indispensable for thorough cleaning. It may be easier to loosen the top covers if the side panels are removed first. The process is somewhat tricky.
Pry the central ventilation cover up.

翻訳

手順3

Replace Jura ENA micro gear motor: 手順 3、 3の画像 3

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.
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.

翻訳

手順4

Flip up the front cover.
Remove the cover. In the model with the side holes, you can pull them out at an angle to the front. With the other model, you have to push it back a little to unhook it, then lift it up.

翻訳

手順5

This is what it looks like when the two lids are gone. A lot of dirt built up.

翻訳

手順6 Side panels

Replace Jura ENA micro gear motor, Side panels: 手順 6、 1の画像 1

The side parts are pushed out to the rear. However, they are secured with two screws and a lock at the top and a wedge-shaped catch on the sides.
Unscrew the two T15 Torx screws that secure the side panels at the top.

翻訳

手順7

Replace Jura ENA micro gear motor: 手順 7、 3の画像 3

The lock is located under the Jura badge on the back. Turn it counterclockwise about 20 degrees, then you can remove it.
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:
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.

翻訳

手順8

Replace Jura ENA micro gear motor: 手順 8、 3の画像 3

This is what it looks like underneath. The lock is secured with an oval head screw. It looks like a rivet. To open you need a special oval head bit, in an emergency you can use pliers.
Remove the oval head screw.
Push the lock firmly upwards as far as possible.

翻訳

手順9

The side parts are held at the top and bottom with three hooks each. Therefore, they have to be moved backwards to detach them. However, they are secured against shifting with wedge-shaped notches at the front. The next step shows how they can be solved.
The notches must be lifted out of the openings. They are located on both sides at the top and bottom about 1.5 cm from the edge and 7 cm from the front edge.
This is what the wedge-shaped notches look like

翻訳

手順10

Replace Jura ENA micro gear motor: 手順 10、 3の画像 3

Lay the machine on its side.
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.
Position of the wedge-shaped notch: 7 cm from the front edge, 1.5 cm from the top or bottom edge.
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.
In the same way, insert another opening pick on the opposite edge.
Now both notches are free and the side part can be moved in the next step.

翻訳

手順11

Push the side panel firmly backwards. It may get stuck a bit and you need to use a plastic pry tool to help.
Take off the side panel and set it aside.
Repeat for the other side panel.

翻訳

手順12

Replace Jura ENA micro gear motor: 手順 12、 3の画像 3

Release the catches on the top of the inner cover.
Flip the inner cover down and lift it out. The brew group becomes now visible.
The third picture shows a view of the other side.

翻訳

手順13 Gear Motor

Replace Jura ENA micro gear motor, Gear Motor: 手順 13、 3の画像 1

Replace Jura ENA micro gear motor, Gear Motor: 手順 13、 3の画像 2

Replace Jura ENA micro gear motor, Gear Motor: 手順 13、 3の画像 3

The gear motor is located behind the electronics box. First this path has to be cleared.
Disconnect the cables on the top row. Be sure to note which connector is plugged in where.
Detach the cables on the left side as well
From the bottom row you only need to loosen the plug (here blue-red) that belongs to the motor.
Unscrew the three Torx T10 screws that hold the box in place.
Set the box aside.

翻訳

手順14

Replace Jura ENA micro gear motor: 手順 14、 3の画像 3

The motor is attached with two Torx T20 screws. Remove those. The screws are fastened with some threadlocker. Use this for the re-assembly as well.
Unplug the connector from the encoder.
Carefully lift out the motor.
Disconnect the connecting wires.