Audi A8 2003 Workshop Manual page 135

– Remove bolt -4- and detach coolant connection.
– Detach hoses -2- and -6-.
– Remove bolts -1-, -3- and -5- and detach connection for ex‐
haust gas recirculation.
– Detach coolant hose -arrow- in front of bulkhead.
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– 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- and take off vacuum pump.
Installing
Installation is performed in reverse sequence; note the following:
Note
Renew seals and O-rings.
♦
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 -arrows-.
Audi A8 2003 ➤
Brake system - Edition 03.2013
11. Vacuum pumps for brake servo
129