Exploded view - brake servo / brake master cylinder (all vehicles except TT RS) — AUDI

Exploded view - brake servo / brake master cylinder (all vehicles except TT RS)
Note
Complete master cylinder and brake servo can be replaced independently of each other.
2
Brake servo
On some vehicle types, the vacuum required is taken exclusively from the intake manifold
Vehicles with OHBV are fitted with brake servo vacuum sender -G483-
Chapter
Checking function
With the engine switched off, firmly depress the brake pedal several times (this reduces the vacuum present in the servo unit).
Depress brake pedal and hold.
Start engine.
If the brake servo unit is working properly, the pedal will give noticeably under the foot.
Separating from brake pedal
Chapter
Removing and installing
Chapter
Removing and installing (TT RS with 7-speed automatic gearbox)
Chapter
Removing and installing (TT RS with 6-speed manual gearbox)
Chapter
Note
On vehicles with TTS engine the sound generator must be removed and installed
Chapter
.
The sound generator is located in the engine compartment in front of the brake servo.
If faulty, renew complete.
1
Gasket
For brake servo
3
Seal
Renew
4
Brake master cylinder
With brake light switch attached
Item
Cannot be repaired.
If faulty, renew complete.
Removing and installing
Chapter
Removing and installing (TT RS)
Chapter
Note
On vehicles with TTS engine the sound generator must be removed and installed
Chapter
.
The sound generator is located in the engine compartment in front of the brake servo.
5
Heat shield
Allocation
the parts catalogue
6
Hexagon nut
Self-locking
Always renew if removed
20 Nm
7
Brake line
Brake master cylinder/secondary piston circuit to hydraulic unit
14 Nm
8
Brake line
Brake master cylinder/primary piston circuit to hydraulic unit
14 Nm
9
Sealing plug
Lubricate with brake fluid and insert into brake master cylinder
10
Brake fluid reservoir
Lubricate with brake fluid and insert in sealing plugs in brake master cylinder
With integrated warning contact for brake fluid level (gradual introduction)
Brake fluid reservoir must be removed before renewing warning contact
Press brake fluid reservoir into sealing plugs
Removing and installing
Chapter
11
Filler cap
With integrated float and warning contact for brake fluid level
12
Vacuum pipe
With non-return valve
13
Sealing plug
Checking inner bellows at brake servo
Remove storage compartment (driver side)
General body repairs, interior
Rep. gr.
68
Shelves/trim panels; Exploded view - dash panel cover (driver side)
.
Check that bellows has not slipped out of circumferential groove as shown in illustration.
WARNING
Before driving vehicle for the first time, make sure function of brakes is OK.