Audi A8 Workshop Manual page 75

Adjusting clearance of clutch „B"
– Position clutch „B" onto compressor tool -T10285- .
– Place holding plate -T10281- on outer plate of clutch „B".
• The holding plate should not contact the studs on the outer
plate at any point.
– Fit centring pin of thrust piece -T10285/1- into drilling in holding
plate.
– Bring clutch „B" into correct position on base plate of com‐
pressor tool.
• Thrust piece must be positioned centrally below thrust plate of
spindle.
– Turn spindle of compressor tool downwards.
• The markings on the inspection hole of the thrust piece must
align -arrow-.
– Insert dial gauge -VAS 6080- into measuring bridge -VW
382/7- and secure with knurled nut.
– Position measuring bridge on upper rim of cylinder „B" as
shown in illustration.
– Check that measuring bridge is seated properly on rim of cyl‐
inder „B".
– Bring measuring tip into contact with outer plate and note value
obtained.
– Mark exact contact point on cylinder „B".
– Repeat measurement at two other points on outer plate (offset
by 120°) and mark measuring points.
– Determine average value from the three measurements under
load.
– Release spindle and remove holding plate.
– Use both hands to pull clutch pack upwards as far as stop in
clutch „B".
– With clutch pack pulled up as far as stop, measure distance
between upper rim of cylinder „B" and outer plate at one of the
points marked (second mechanic required).
– Repeat measurement at the two remaining markings on the
outer plate.
– Determine average value from the three measurements with
clutch pack pulled up as far as stop.
– Determine clearance using the following formula:
Mean value of measurements under load
(value 1 + value 2 + value 3) : 3
– Mean value of measurements with clutch pack pulled up
as far as stop
(value 1 + value 2 + value 3) : 3
= Clearance
– Subtract mean value of measurements with clutch pack pulled
up as far as stop from mean value of measurements under
load.
Clearance:
• Specification: 1.41 ... 1.86 mm
Servicing automatic gearbox 09E, four-wheel drive - Edition 12.2011
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Audi A6 2005 ➤ , Audi A8 2003 ➤
4. Dismantling and assembling clutch „B"
71