Porshe 911 (997). Manual - part 274

 

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Porshe 911 (997). Manual - part 274

 

 

The wheel electronics must be replaced if:

The housing is visibly deformed

• 

The filter surface is so soiled that it cannot be cleaned by wiping

• 

Tyre sealant (tyre sealing liquid) has been used.

• 

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 work step (tighten without interruption up to

attaining the prescribed tightening torque).

2. Fit washer, chamfered on both sides, and screw on union nut until it seats. Visibly twist bore at valve foot.

If necessary, block with suitable assembly pin. The tightening torque is 4 Nm (3 ftlb.) (± 0.5 Nm (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 with tightening torque 3 ftlb. (± 0.4 ftlb.).

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

Removal

1. Clamp

wheel.

Diagnostic system: reading out fault memory and activating systems

Special notes for tyre pressure monitoring system (RDK)

1253

2. When pushing off the tyre, ensure that the bead press-off tool is set to the exact inch graduation. If

this is not the case, the rim flange may be damaged by the press-off rollers.

3. The wheel must be turned anti-clockwise when pressing the tyre off the rim. Otherwise, excessive forces

occur on the fastening bolts of the machine which can lead to bolt breakage. The tyre beads can be pressed
off at the same time or individually.

4. Before removing the tyre, coat the tyre beads with mounting paste to facilitate removal.

Note

The mounting lever must be kept at a safe distance from the rim. This prevents damage (scratches,
pressure marks) to the rim spokes.

• 

In the case of vehicles with RDK, for the upper tyre bead the mounting head must be positioned about
15 cm behind the valve in order to prevent damage to the wheel electronics.

• 

In the case of vehicles with RDK, for the lower tyre bead the mounting head must be positioned about
5 cm behind the valve.

• 

5. Put the assembly head on the rim flange. Position the assembly aid. The mounting lever is pushed into the

deep bed underneath the first tyre bead, and then guided over the assembly shoe and pushed down .

6. Lift the tyre bead out of the rim bed by turning the wheel to the right.

7. Position the assembly aid for the second tyre bead approximately 5 - 10 cm to the right of the

valve. Pull the tyre upwards and push it into the rim bed underneath the second tyre bead using the
mounting lever. Make sure that the mounting lever is guided correctly (see Item 5). Turn the wheel
to the right and remove the tyre.

Diagnostic system: reading out fault memory and activating systems

Removal

1254

Installation

Note

Check the mounting head adjustment (must correspond with rim size).

• 

The wheel electronics must not be treated with compressed air, mounting paste, cleaning agents or
any other solvents.

• 

Rims must not be cleaned with high pressure before tyres have been fitted.

• 

Do not scratch filter surface of wheel electronics clear! Remove soiling with a lint-free cloth. The
wheel electronics must be free of tyre mounting paste (observe when applying tyre mounting paste to
the rim).

• 

During fitting, ensure that the tyre bead is not pressed against the wheel electronics.

• 

1. Free the wheel from the abraded rubber particles and check for damage .

2. A new valve must always be fitted.

3. Coat the wheel and tyre with tyre mounting paste - TIP TOP Universal, order No. 593 0601 - or Contifix.

Make sure that the wheel electronics are free of tyre mounting paste.

4. Place the tyre in the correct position on the wheel. Push in mounting arm and position on top of the rim

flange. The assembly head must be offset from valve by 180°.

5. Push the first part of tyre bead (lower tyre bead) partly over rim flange. Adjust mounting head on rim

flange and pull lower tyre bead onto the rim.

6. Position mounting head approx. 15 cm to the right of valve and pull the second tyre bead (upper tyre

bead) onto rim.

Tyre filling cage

WARNING

If the tyre seating pressure is too high (max. 4 bar permissible), personal injuries due to possible tyre or
wheel destruction are possible.

→ Maximum tyre seating pressure 4 bar! This value must not be exceeded!

→ For tyre seating pressure over 3.3 bar (possible in the event that several unfavourable factors

should occur simultaneously / max. 4.0 bar permissible) use a tyre filling cage.

Diagnostic system: reading out fault memory and activating systems

Installation

1255

7. Remove entire wheel from tyre fitting unit. Without valve insert, fill tyre with air until tyre beads

slide over hump (to a maximum of 4.0 bar).

8. Screw in new valve insert and fill tyre to specified tyre pressure. Screw on valve cap.

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
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.

• 

Diagnostic system: reading out fault memory and activating systems

Installation

1256

 

 

 

 

 

 

 

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