Audi A8 2003 Workshop Manual page 131

– Disconnect vacuum hose -1- from vacuum pump.
Caution
Take care not to damage the vacuum hose. The vacuum hose
must be renewed if it is damaged.
– Remove bolts -2- and -3-.
– Take off vacuum pump.
Installing
Installation is performed in reverse sequence; note the following:
Note
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Renew O-rings
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ♦
with respect to the correctness of information in this document. Copyright by AUDI AG.
Secure all hose connections with the correct type of hose clips
♦
(same as original equipment) ⇒ Electronic parts catalogue .
– Set drive lugs of vacuum pump so they engage in slots in
camshaft when vacuum pump is installed.
– 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.
– Fasten hose clip using suitable pliers.
Note
On some models the vacuum hose has to be secured at the vac‐
uum pump with a bolt.
Caution
Take care not to damage the vacuum hose. The vacuum hose
must be renewed if it is damaged.
Tightening torque
Component
Vacuum pump to timing chain cover
Brake system - Edition 03.2013
Nm
10
11. Vacuum pumps for brake servo
Audi A8 2003 ➤
125