9 Exploded view - brake servo / brake
master cylinder
Note
♦
Brake master cylinders can no longer be dismantled, i.e. there
is no provision for servicing.
♦
Use only new brake fluid. Observe information on brake fluid
reservoir!
1 - Brake fluid reservoir
❑ Do not remove strainer
from brake fluid reser‐
voir
2 - Filler cap with seal
3 - Trunnion bolt, 10 Nm
4 - Pipe to master cylinder
5 - Tandem brake servo
❑ Adjusting ball head
⇒ page 161
❑ Function test: With the
engine turned off, firmly
depress the brake pedal
several times (this re‐
duces the vacuum
present in the servo
unit).
❑ Then hold brake pedal
in applied position em‐
ploying moderate force
and start engine. If the
servo unit is working
properly, the pedal will
give slightly under foot
(servo assistance be‐
comes activated).
❑ With bonded gasket
❑ Renew complete unit if
defective.
❑ Removing and installing
Audi A6 2005 ➤ , Audi A6 Avant 2005 ➤
Brake system - Edition 04.2019
160 Rep. gr.47 - Brakes - hydraulics