Audi A8 2003 Workshop Manual page 136

Audi A8 2003 ➤
Brake system - Edition 03.2013
– Attach vacuum pump to flange and tighten bolts to 9 Nm.
– Fit new hose clip onto vacuum hose.
– Push vacuum hose -1- onto connection on vacuum pump.
– Close hose clip using suitable pliers.
Note
On some models the vacuum hose has to be secured at the vac‐
uum pump with a bolt.
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Caution
Take care not to damage the vacuum hose. The vacuum hose
must be renewed if it is damaged.
– Tighten union nuts on high-pressure pipes hand-tight initially.
– Make sure high-pressure pipes are seated without strain.
– Use torque wrench - V.A.G 1331- with ratchet - V.A.G 1331/1-
and tool insert (17 mm) - V.A.G 1331/6- to tighten high-pres‐
sure pipe connection at high-pressure pump.
– Use torque wrench - V.A.G 1331- with ratchet - V.A.G 1331/1-
and tool insert (19 mm) - V.A.G 1331/5- to tighten high-pres‐
sure pipe connections at rail elements.
– Install exhaust gas recirculation control motor - V339- (left-
side).
– Fill cooling system.
Tightening torque
Component
Vacuum pump to timing chain cover
EGR connection to:
Coolant connection to EGR connection
High-pressure pipe to:
130
Rep. gr.47 - Brakes - hydraulics
Cylinder head
Connecting pipe 9
High-pressure
pump
Rail element 25
Nm
9
9
9
25