Audi A8 2003 Workshop Manual page 183

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
Special tools and workshop
equipment required
♦ Valve stem seal puller -
3364-
♦ Valve stem seal fitting tool -
3365-
♦ Removal and installation
device for valve cotters -
VAS 5161 A-
♦ Engine and gearbox sup‐
port - VAS 6095-
♦ Cylinder head tensioning
device - VAS 6419-
Procedure
– Remove camshafts
– Mark fitting location of roller rocker fingers for re-installation
and remove.
– Insert cylinder head tensioning device - VAS 6419- into engine
and gearbox support - VAS 6095- .
– Secure cylinder head in cylinder head tensioning device, as
shown in illustration.
– Connect cylinder head tensioning device to compressed air.
– Using lever -arrow-, slide air pad under combustion chamber
where valve stem oil seal is to be removed.
– Apply just enough compressed air to bring air pad into contact
with valve heads.
⇒ page 167 .
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Audi A8 2003 ➤
177
3. Servicing valve gear