Audi A6 2005 Workshop Manual page 173

– Unplug connector -2-.
Note
Protect the plenum chamber against any brake fluid which es‐
capes.
– Disconnect brake line
– To remove reservoir, press down locking lug and at the same
time pull brake fluid reservoir out of sealing plugs.
– Disconnect brake lines -1- and -2- from brake master cylinder
and from hydraulic unit and remove after sealing with sealing
plugs.
– Unscrew securing bolts for brake servo -2-.
– Disconnect vacuum line -3-.
Note
Make sure that no dirt can enter the vacuum line opening.
– Remove brake servo with brake master cylinder.
– Unbolt securing nuts for brake master cylinder -1-.
– Carefully remove brake master cylinder from brake servo.
Installing
When installing, note the following points in particular:
♦ Before installing brake master cylinder, clean any residual
brake fluid off plenum chamber.
♦ When assembling brake master cylinder with brake servo unit,
make sure push rod is properly positioned in brake master
cylinder.
Attaching brake pedal to brake servo
– Hold ball head of push rod in front of mounting and push brake
pedal towards brake servo so that ball head audibly locks into
place.
– Adjust brake light switch
– Bleed brake system
⇒ page 50 .
⇒ page 154 .
Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
167
11. Brake servo