Audi A8 Workshop Manual page 170

Audi A6 2005 ➤ , Audi A8 2003 ➤
Servicing automatic gearbox 09E, four-wheel drive - Edition 12.2011
Checking inner surfaces of cylinder „C/D" for scoring by friction
plates
– Check inner surfaces of cylinder „C/D" for scoring by friction
plates.
• The friction plates must not catch in the scores.
If the scores caused by the friction plates are deeper than 0.5 mm:
– Renew cylinder „C/D".
Checking bearing bush in cylinder „C/D" for wear
– Check running surfaces of bearing bush -arrow- inside cylin‐
der „C/D" for wear.
• The running surfaces should not have any deep scoring and/
or blue discoloration.
If there are deep scores and/or blue discolouring:
– Renew cylinder „C/D".
• Proceed as follows if the running surfaces have no blue dis‐
coloration and there is only slight scoring:
– Rub down running surface one or two times with abrasive pa‐
per and oil (grain size 600).
– Clean running surface thoroughly with clean cloth and check
running surface.
• The running surfaces should now be in as-new condition.
If scoring is still present after this step:
– Renew cylinder „C/D".
166
Rep. gr.39 - Final drive - front differential
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