Porshe 911 (997). Manual - part 269

Valve complete with screw -1 to 7- has to be replaced if:

The wheel electronics are removed

• 

The self-locking -1- fastening screw is loose

• 

The bead seat sealing ring -6- is porous or damaged

• 

The valve body -7- is bent

• 

The union nut -4- is loose.

• 

The wheel electronics -A- must be replaced if:

The housing is visibly deformed

• 

The filter surface (square, porous section on back of wheel electronics) is so badly soiled that it can
no longer be cleaned by wiping

• 

Tyre sealant (tyre sealing liquid) has been used

• 

The service life of the battery has expired

• 

There is a fault within the wheel electronics.

• 

After removal of the tyre, the wheel electronics -A- can be seen at the valve in the outer rim well base.

1. Release wheel electronics from valve using a Torx socket screwdriver T 20 (if necessary, counter with a

suitable assembly pin, e.g. steel pin Ø approx. 1.8 mm in bore at valve foot) and remove.

2. Then unscrew union nut and remove valve.

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Installing wheel electronics

ATTENTION

The wheel electronics must not come into contact with the tyre fitting paste or solvent.

→ Do not apply compressed air, mounting paste, soap, solvents or any other cleaners to the wheel electronics

when fitting/removing tyres.

When replacing the wheel electronics, always use a completely new valve and a new fastening screw!
The tightening torque for wheel electronics/valve is 4 Nm (3 ftlb.)(± 0.5 Nm/0.4 ftlb.)!
Every tyre set or wheel change must be communicated to the control unit. In particular, this includes the case
where wheel positions have been interchanged. For this purpose, always select the tyre type and tyre size
under Main menu > Tyre pressure > Adjustments in the instrument cluster. The control unit then learns the
wheel positions again once the vehicle starts driving.

1. Install wheel electronics loosely at valve (do not tighten) and position in valve bore together with valve

and bead seat sealing ring.

ATTENTION

Remove assembly pin after installing valve (required to counter). Otherwise the tyre will be damaged
during installation.

→ Carry out the tightening procedure for the valve in one step (tighten without interruption the

prescribed tightening torque is reached).

2. Position washer, chamfered on both sides, and screw union nut on as far as the mounting face.

Visibly twist bore at valve foot. If necessary, block with suitable assembly pin. The tightening
torque is 4 Nm (± 0,5 Nm) (3 ftlb. ± (0.4 ftlb.)).

3. Push wheel electronics -A- slightly into rim well (this adjusts the angle of inclination of valve to wheel

electronics).

4. Carefully tighten self-locking (Torx) fastening screw T 20 to tightening torque 4 Nm (± 0.5 Nm (3 ftlb. (±

0.4 ftlb.)). The wheel electronics should now be lying evenly against the rim.

997110, 997111, 997120, 997121, 997310, 997311, 997320, 997321, 997410, 997411, 997430, 997431,
997610, 997611, 997620, 997621

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WARNUNG

Gefahr des Verlusts der Text-Bild-Zuordnung beim Ausdruck.

Aus technischen Gründen kann derzeit nicht ausgeschlossen werden, dass trotz
einwandfreier Darstellung auf dem Bildschirm beim Ausdruck der
Zusammenhang von Text und zugehörigem Bild verloren geht.

• 

Wird der Fehler nicht bemerkt, besteht die Gefahr, daß Arbeiten nicht korrekt
durchgeführt werden und es dadurch zu Personen- und Sachschäden kommt.

• 

→ Vergleichen Sie deshalb nach dem Druckvorgang unbedingt die Ausdrucke mit der
Bildschirmdarstellung. Korrigieren Sie die Ausdrucke im Fehlerfall so, daß der Inhalt der
Bildschirmdarstellung zutreffend wiedergegeben wird.

WARNING

Danger of losing text-figure correspondence when printing out.

For technical reasons, it can currently not be ruled out that the correspondence
between text and associated figure can be lost when it is printed out, even though
the display on the screen is correct.

• 

If the fault is not noticed, there is the danger that work will not be performed
correctly which can cause injury and damage.

• 

→ Therefore, always compare printouts with the screen display after printing them out. Correct
the printouts if they are faulty so that the content of the screen display matches that on the
printouts.

AVERTISSEMENT

Risque de perte de la correspondance texte-illustration lors de l'impression papier.

Pour des raisons techniques, il ne peut pas être exclu à l'heure actuelle que, même
en cas d'affichage correct à l'écran, la correspondance entre le texte et l'illustration
puisse être erronée sur l'impression papier.

• 

Si l'erreur passe inaperçue, on court le risque d'exécuter certaines opérations de
manière incorrecte pouvant conduire à des dommages corporels et matériels.

• 

→ Comparez impérativement pour cette raison les impressions papier avec l'affichage à l'écran.
Corrigez-les en cas d'erreur de manière à reproduire correctement l'affichage à l'écran.

ATTENZIONE

Pericolo di perdita dell'abbinamento testo-immagine nella stampa.

Per motivi tecnici non è escluso che, nonostante la rappresentazione sullo schermo

• 

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risulti perfetta, durante la stampa venga persa la corrispondenza fra testo e
relativa immagine.
Se tale difetto non viene rilevato vi è il pericolo che i lavori non siano eseguiti
correttamente; ciò può avere come conseguenza lesioni e danneggiamenti.

• 

→ Per questo motivo, dopo la stampa è assolutamente necessario confrontare le stampe con la
rappresentazione sullo schermo. In caso di errore si prega di correggere le stampe, così da
garantire la riproduzione esatta della rappresentazione sullo schermo.

ADVERTENCIA

Al imprimir se corre el riesgo de perder la correcta asignación de las figuras al texto.

Por motivos técnicos, por el momento no se puede descartar que, aun siendo
correcta la imagen que aparezca en la pantalla, al imprimir se pierda la
correlación entre el texto y la figura correspondiente.

• 

Si este error pasara desapercibido, existe el riesgo de que los trabajos no se
ejecuten de forma correcta y, por tanto, se produzcan daños personales y
materiales.

• 

→ Por ello le rogamos que tras el proceso de impresión compare siempre las copias impresas con
la imagen de la pantalla. En caso de error, corrija las copias impresas de forma que se
correspondan con el contenido de la imagen de la pantalla.

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