Volkswagen Golf / Golf GTI / Jetta. Manual — part 403

be
repaired.
If faulty,
replace
as
complete
unit

7 - Hex

nut,
self-
locking
20 Nm
(15 ft.
lb)

8 - Bolt, 8

Nm (70
in. lb)

Hydraulic unit, brake booster/master cylinder, overview

45-7

9 - Cap nut, 20

Nm (15 ft. lb)

10 - ABS/EDL

hydraulic
unit

11 - ABS control

module

Control

module
connector is
not
disconnected
before On
Board
Diagnostic
(OBD)

12 - Connection

for brake line

Hydraulic

unit to left
front brake
caliper

Page 45-9

13 - Connection

for brake line

Hydraulic

unit to right
rear wheel
cylinder/
brake
caliper

Page 45-9

14 - Connection

for brake line

Hydraulic

unit to left
rear wheel
cylinder/
brake
caliper

Page 45-9

15 - Connection

for brake line

Hydraulic unit, brake booster/master cylinder, overview

Hydraulic

unit to right
front brake
caliper

Page 45-9

16 - Brake line

Brake master

cylinder/pressure
rod piston circuit
to hydraulic unit

Page 45-9

Hydraulic unit, brake booster/master cylinder, overview

45-8

17 - Brake line

Brake master

cylinder/floating
piston circuit to
hydraulic unit

Page 45-9

18 - Hex nut,

self-
locking, 20
Nm (15 ft.
lb)

19 - Hex nut,

self-
locking, 20
Nm (15 ft.
lb)

20 - Seal

Always

replace

21 - Vacuum

hose

Install in

brake
booster

22 - Sealing

plug

23 - Hex nut,

self-
locking, 20
Nm (15 ft.
lb)

24 - Seal

For brake

booster

25 - Boot

Make sure

boot is
properly
seated or
suction
noises
may be

Hydraulic unit, brake booster/master cylinder, overview