Porshe 911 (997). Manual - part 283

 

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Porshe 911 (997). Manual - part 283

 

 

- Preliminary work
- General warning notes
- Removing front brake disc
- Installing
- Subsequent work

Tools

Designation

Type

Number Explanation

piston resetting
fixture

commercially available
tool

NR.144

Preliminary work

→ 440519 Removing and installing wheel

General warning notes

WARNING

Risk of accidents if brake pads and/or brake discs are not replaced in time.

Danger of injury and damage to vehicle if braking effect is impaired.

• 

→ The brake pads must be replaced when the brake pad warning indicator lights up, but no later than

when there is a residual pad thickness of 2 mm.

ATTENTION

1289

Increased risk of damage to brake discs when mounting/removing wheels.

The brake discs can be damaged.

• 

→ Use assembly aid (assembly pins) in order to exclude any possibility of heavy contact of the wheel

with the brake disc.

Removing front brake disc

WARNING

Risk of accidents if brake pads and/or brake discs are not replaced in time.

Danger of injury and damage to vehicle if braking effect is impaired.

• 

→ The brake pads must be replaced when the brake pad warning indicator lights up, but no later than

when there is a residual pad thickness of 2 mm.

Note

In order to gain better access for removal of the brake calliper, it is beneficial to turn the wheels fully
either to the right or the left.

• 

1. Release retainer for plug of wear indicator on wheel carrier.

2. Disconnect the speed sensor on the ABS sensor.

Pushing back brake pad

Diagnostic system: reading out fault memory and activating systems

General warning notes

1290

3. Push brake pads back slightly and evenly using piston resetting fixture NR.144, see Workshop

Equipment Manual, Chapter 2.4 -direction arrow- . Make sure that no brake fluid runs out of the
supply tank - if necessary, remove by suction.

4. Undo brake calliper on wheel carrier and hang it in a suitable place in the wheel well (do not open the

brake hydraulics!).

5. Remove brake disc after unscrewing the fastening screw. If necessary, remove the brake disc by tapping it

gently with a rubber hammer.

Installing

WARNING

Risk of accidents if brake pads and/or brake discs are not replaced in time.

Danger of injury and damage to vehicle if braking effect is impaired.

• 

→ The brake pads must be replaced when the brake pad warning indicator lights up, but no later than

when there is a residual pad thickness of 2 mm.

ATTENTION

Increased risk of damage to brake discs when mounting/removing wheels.

The brake discs can be damaged.

• 

→ Use assembly aid (assembly pins) in order to exclude any possibility of heavy contact of the wheel

with the brake disc.

Do not confuse right and left brake discs during assembly!
Distinguishing characteristic: Part No.! The flat surface of the brake discs is marked with R = right or L = left.

1. Check that all parts are in perfect condition and replace them if necessary.

2. Clean the levelling and centring surfaces on the brake disc and wheel hub. Then apply a very thin

coat of Optimoly TA to the centring surface on the wheel hub.

3. Fit the brake disc. Observe specified tightening torque. → 46 TW Tightening torques for brake mechanics -

Technical values

4. Fit the brake calliper. Replace the brake calliper fastening screws each time they are removed. Observe

specified tightening torque. → 46 TW Tightening torques for brake mechanics - Technical values

5. Install retainer for plug of wear indicator on wheel carrier.

6. Connect the speed sensor on the ABS

sensor.

7. Position disc brake pads by operating the brake several times.

Diagnostic system: reading out fault memory and activating systems

Removing front brake disc

1291

Brake system: checking fluid level

8. Check brake fluid level and correct if necessary. The brake fluid level must be between the

MAX-MIN marking. . → Brake system: checking fluid level → 470801 Checking brake fluid level

Subsequent work

→ 440519 Removing and installing wheel

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

• 

Diagnostic system: reading out fault memory and activating systems

Installing

1292

 

 

 

 

 

 

 

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