Audi A8 - Page 177

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8 - Clutch „E“ with annulus „I“
❑ Wear assessment of clutch „E“ ⇒ page 176
❑ Check teeth of annulus „I“; if teeth are damaged, renew cylinder „E“ and planet carrier „I“
9 - Axial needle bearing
❑ Perform visual check for damage: axial needle bearing and contact surfaces should be in as-new con‐
dition; renew if necessary.
10 - Inner plate carrier „E“ with intermediate shaft
❑ Checking running surfaces for wear ⇒ page 174
11 - Axial needle bearing
❑ Perform visual check for damage: axial needle bearing and contact surfaces should be in as-new con‐
dition; renew if necessary.
12 - Inner plate carrier „A“
❑ Check running surfaces of shaft for wear ⇒ page 174
Checking axial and radial clearance of planetary gears
– Check axial clearance of planetary gears -arrow A-.
• Wear limit (axial clearance): 0.4 mm
– Check planetary gears for radial clearance -arrow B-.
• The planetary gears must not have any noticeable radial clear‐
ance.
– Check shafts for planetary gears.
• Shafts must be properly secured (check peening)
• Make sure area around shafts has no blue discolouration.
– Renew planet carrier „I“ if necessary.
Checking rectangular section seals for wear
Note
Always renew rectangular section seals. Nevertheless, the wear
pattern on the rectangular section seals gives an indication of the
condition of the contact surface for the seals. For this reason it is
always advisable to check the rectangular section seals for wear.
If the axial wear -arrow 1- on the rectangular section seals is ex‐
cessive (slight wear on the outside corners is normal):
– Renew cylinder „E“ with annulus „I“ ⇒ Item 1 (page 176)
If the radial wear on the rectangular section seals exceeds 0.3
mm -arrow 2- (compare with thickness of new rectangular section
seal):
– Renew ATF supply unit with stator shaft.
Audi A6 2005 ➤ , Audi A8 2003 ➤
Servicing automatic gearbox 09E, four-wheel drive - Edition 12.2011
3. Assessment of wear on gearbox components 173