Audi A8 2003 Workshop Manual page 97

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– Set drive lugs of vacuum pump so they engage in slots on
camshaft when pump is fitted -arrow-.
– Tighten union nuts on high-pressure pipes hand-tight initially.
– Ensure that high-pressure pipes are not under tension.
– To tighten union of high-pressure pipe at high-pressure pump,
use torque wrench - V.A.G 1331- with ratchet - V.A.G 1331/1-
and open end spanner insert AF 17 - V.A.G 1331/6- .
– To tighten unions of high-pressure pipes at rail elements, use
torque wrench - V.A.G 1331- with ratchet - V.A.G 1331/1- and
tool insert, AF 19 - V.A.G 1331/5- .
– Install control motor for exhaust gas recirculation - V339- (left-
side) ⇒ page 317 .
Note
Do not reuse coolant.
– Fill cooling system ⇒ page 216
Tightening torque
Component
Vacuum pump to timing chain cover
Connection for exhaust
gas recirculation to:
Coolant hose/pipe connection to connection for
exhaust gas recirculation
High-pressure pipe to:
.
Cylinder head
Connecting pipe 9
High-pressure
pump
Rail element 25
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with respect to the correctness of information in this document. Copyright by AUDI AG.
Nm
9
9
9
25
3. Servicing work on timing chain end
Audi A8 2003 ➤
91