Defective Stator Shaft Bushes - Audi A8 Workshop Manual

♦ Fault rectification:
– Check following parts of ATF pump and contact surface of ATF
supply unit for scoring or seizure marks:
2 - ATF pump housing
3 - Annulus
4 - ATF pump gear
If seizure marks are visible:
– Renew ATF supply unit.
Procedure if ATF is severely contaminated
⇒ „3.1 Assessment of wear by checking ATF for colour and con‐
tamination", page 164 :
– Renew mechatronic unit
– Renew torque converter (cannot be cleaned).
Note
The mechatronic unit does not have to be renewed if the ATF is
only slightly contaminated.
– Dismantle and clean complete gearbox.
– Clean ATF lines and ATF cooler.
– Dismantle and check all clutches.
Note
If the clutches are OK the mechatronic unit does not have to be
renewed.
3.2

Defective stator shaft bushes

♦ Possible fault:
Brass bushes on stator shaft have seized, causing failure of clutch
„E".
♦ Fault rectification:
– Check brass bushes -arrows- for scoring and seizure marks.
If seizure marks are visible:
– Renew ATF supply unit with stator shaft.
– Check rectangular section seals and input shaft of clutch „E".
Servicing automatic gearbox 09E, four-wheel drive - Edition 12.2011
⇒ Item 15 (page 93) .
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Audi A6 2005 ➤ , Audi A8 2003 ➤
13
3. Common faults