Volkswagen Golf / Golf GTI / Jetta. Manual — part 415

45-47

Hydraulic
unit, brake
booster/brake
master
cylinder Mark
60, assembly
overview

Note:

Complete master
cylinder and brake
booster can be
replaced
independently of each
other

1 - Brake booster

For gasoline

engines, the
vacuum is
taken from
the intake
manifold.

Diesel

engines,
have a
vacuum
pump to
create the
required
vacuum.

With some

vehicles, a
brake system
vacuum
pump -V192
is installed.

Functional

check

Page 47-60

Removing
and installing

Page 47

Hydraulic unit, brake booster/brake master cylinder Mark 60, assembly overview

58

Application

See parts

catalog

Hydraulic unit, brake booster/brake master cylinder Mark 60, assembly overview

45-48

Functional

check

- With

engine
switched
off,
press
brake
pedal
firmly
several
times (to
exhaust
the
vacuum
in the
module).

- Now

depress
brake
pedal with
average
foot
pressure,
hold and
start
engine. If
the
booster
module is
working
properly,
the pedal
will be felt
to give
slightly
under foot
(booster
assistance
becomes
effective).

If faulty,

replace
complete

Non-
return
valve

Hydraulic unit, brake booster/brake master cylinder Mark 60, assembly overview

(in
vacuum
hose)

Page
47-49

Separating

from brake
pedal

Page 46-
79

Removing

and
installing

Page

47-84

Hydraulic unit, brake booster/brake master cylinder Mark 60, assembly overview