Porshe 911 (997). Manual - part 265

Wheel bolt

3. Always apply a thin coat of Optimoly TA (aluminium paste) on the thread of the wheel bolts, on the

shank and between the bolt head bearing surface and spherical cap ring (under the head) -arrows- .
Do not grease the spherical cap bearing surface -X- of the wheel bolts that face the wheel.

-A-

- Spherical cap ring (permanently connected with the wheel bolt)

-X-

- Spherical cap bearing surface facing the wheel (do not grease)

Note

Rework on wheel bolts is impermissible.

• 

4. Always replace damaged wheel

bolts.

This damage includes mechanical damage to the thread, the spherical cap and damage resulting from seizure
of the bolt head bearing surface and spherical cap ring. It must be possible to rotate the spherical cap ring on
the bolt shank and to move it in axial direction.

Note

Always observe the specified tightening torque of 130 Nm (96 ftlb.).

• 

5. Screw in wheel bolts by hand and then tighten evenly. Start at the top when

tightening.

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

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

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Installing wheel

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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
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.

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Installing wheel

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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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Installing wheel

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44 05 94 Balancing/optimising wheels - as of MY
2005

- Balancing/optimising wheels

Tools

Designation

Type

Number Explanation

measuring gauge commercially available tool

NR.136

Balancing/optimising wheels

General

Excessive wheel imbalance not only produces vibrations and causes the steering wheel to shake, but also
results in increased wear on various parts of the running gear.
Even if the wheels are correctly balanced, excessive geometry errors (radial and axial runout) and misshapen
tyres, e.g. accumulation of material at one point in the tyre structure (spring action of tyre changes as the tyre
rolls), can cause rolling and steering imbalance.

Note

Achieving a good result requires utmost care, observance of the instructions and procedure, and
attempting to eliminate even the very last gram of imbalance.

• 

Recommendations/requirements

Wheel suspension elements must be in good technical order.

• 

The wheels must be clean with no foreign objects in the tyre.

• 

Use a tyre measuring gauge, e.g. measuring gauge NR.136 to check radial and lateral runout values
on wheels without flat spots. Values of less than 1.0 mm are desirable - around 0.5 mm would be
better.

• 

To limit the number of radial runout errors and to optimise smoothness of rolling, it is a good idea -
and even necessary in individual cases - to match the tyre (i.e. to fit it in a favourable position with
respect to the wheel). Follow tips and fitting instructions as well as information on tyre mounting
paste for tyres.

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