1997 BMW 328i engine mount

300-2



SUSPENSION,
STEERING
AND
BRAKES-GENERAL

Steering

INTEGRATED
SYSTEMS

The
steering
linkage
connects
the
rack-and-pinion
unit
through
tie
rodsto
the
steering
arms
.
The
tie
rod
ends
allow
the
wheels
to
pivot
and
react
to
suspension
travel
.

Rear
Suspension

The
rear
axle
carrier
is
the
main
mounting
point
for
the
final

drive
housing
and
the
rear
suspension
components
.

Trailing
arms
locatethe
rear
wheels
and
anchorthe
springs,

shocks
and
stabilizer
bar
.
Driveaxies
with
constant-velocity

(CV)
joints
at
both
ends
transfer
power
from
the
differential
to

the
road
wheels
.
The
differential
is
mounted
to
the
rearaxle

carrier
through
rubber
mountsand
bushings
to
hele
isolate

drivetrain
noise
and
vibration
.

Brakes

E36
cars
areequipped
with
power
disc
brakes
with
an
inte-
gral
antilock
brakes
(ABS)
.
The
parking
brake
is
a
dual-drum

system
integrated
with
the
rear
brake
rotors
.
See
Fig
.
3
.

Power
assist
is
provided
by
a
vacuum
booster
when
the
en-

gine
is
running
.
The
brakepedal
pushrod
is
connected
directly

to
the
master
cylinder,
so
failure
of
the
vacuum
booster
does

not
normally
result
in
total
brake
failure
.

0012124



Each
disc
brakeuses
a
caliper
with
a
single
hydraulic
cylin-
Fig
.
2
.



Front
suspension
control
arm
(arrow)
.



der
.
Brake
pads
in
the
left
front
and
right
rear
contain
wear

sensors
.
When
the
padsneed
replacement,the
sensors
illu-
The
front
suspension
is
designed
with
minimum
positive



minate
a
light
on
the
dashboard
.
steering
offset
.
This
geometry
contributes
to
stability
when

traction
is
unequalfrom
side
to
side
.
Suspension
travel
is
lim-



Tires
and
Wheels
ited
by
rubber
bump
stops
.

The
three
point
mounting
of
each
L-shaped
control
arm
ere-



Tiresize
is
critica¡
to
the
proper
operatíon
of
the
E36
ABS
or

cisely
controls
the
front-to-rear
and
side-to-side
position
of
the



ABS/AST
system
.
Severa¡
different
styles
of
wheels,
in
15,16

strut,
while
the
flexibility
of
the
joints
and
mounts
alsoallows



and
17
inch
diameters,
are
available
from
an
authorized
BMW

the
movement
necessary
for
suspension
travel
.
The
control



dealer
.

arm
mounting
points
are
designed
with
anti-dive
geometry
.

The
suspension
reduces
the
normaltendency
for
the
front
of



NOTE-
the
vehicle
to
dive
under
hard
braking
.



Aftermarket
wheelsshould
be
selected
wlth
care
.
Im-
properly
fitted
wheels
can
contact
anddamage
sus

Control
arm
position
is
fixed,
with
no
adjustment
provisions



pension,
brakeorbodycomponentsandmayadversely

on
the
control
arms
for
alter¡ng
front
wheel
al
ignment
.
A
stabi-



affect
vehicle
stability
.

lizer
bar
mounted
to
both
control
arms
heles
to
reduce
body
rol¡
whencomering
.



INTEGRATED
SYSTEMS

Antilock
Brake
System
(ABS)
is
standard
on
all
E36
cars
.

The
variable-assist
power
steering
system
consists
of
an



Standard
on
some
models
and
installed
as
optional
equipment
on

engine-driven
hydraulic
pump,
a
rack-and-pinion
type
steer-



others,
is
All
Season
Traction
(AST)
.

ing
gear,
and
connecting
linkage
to
the
road
wheels
.
TheE36
utilizes
an
engine-speed
dependent
variable
effort
steering



Antilock
Brake
System
(ABS)

system
.
At
low
speeds,
maximum
power
assist
is
provided
to
ease
parking
and
city
driving
.
Athigh
speeds,
assist
is
re-



The
electronically-controlled
ABS
maintains
vehícle
stabili
duced
to
ensure
stability
.



ty
and
control
during
emergency
braking
by
preventing
wheel
lock-up
.
ABS
provides
optimum
deceleration
and
stability
dur-

STABILIZER
BAR

Stabilizer
bar,
removing
and
installing

Stabilizer
bar
link
arrangements
differ
slightly
among
mod-

els
.
In
most
models
the
links
attach
lo
the
control
arms
near

the
outboard
end
.
OnM3
models
the
links
attach
lo
the
strut

assemblies
.

1
.
Raise
car
and
remove
both
front
wheels
.

WARNING
-
Make
sure
that
the
car
is
firmly
supported
on
jack
stands
desígned
for
the
purpose
.
Place
the
jack
stands
beneath
a
structural
chassís
point
.
Do
not

place
jack
stands
under
suspension
parts
.

uul

Fig
.
15
.
Disconnect
stabilizer
bar
connecting
link
at
bar
(arrow)
.
(3181

model
shown
.
M3
stabilizer
link
attaches
lo
strut
.)

FRONT
SUSPENSION



310-
9

14
.
Insta¡¡
a
new
grease
cap,
using
Loctite
©
638
sealant
or



3
.
Remove
two
stabilizer
bar
bushing
brackets
on
left
and

equivalent
.
Insta¡¡
wheel
and
lower
car
.



right
sides
.
Remove
bar
.

4
.
Installation
is
reverse
of
removal
.
Use
new
seif-lockíng

Tightening
Torque



núts
on
connecting
links
.

"
Brake
rotor
lo
wheel
hub
..........
16
Nm
(12
ft-Ib)



"
On
M3
models
:
When
attaching
stabilizer
link
lostrut

"
Collar
nut
lo
stubaxle
.
.........
290
Nm
(214
ft-Ib)



orlobar,
usea
thin
wrench
lo
hold
flats
on
link
parallel
"
Brake
caliper
losteering
arm
......



110
Nm
(81
ft-Ib)



lo
strut
.

"
Road
wheel
lo
hub
...
...
.
.
.
100±10
Nm
(74t7
ft-Ib)
NOTE-
Installation
of
the
stabilizer
bar
is
easiest
with
thecar
leve¡
(front
wheels
at
the
same
height),
and
as
near
to
normal
ride
height
as
possible
.

Tightening
Torques

"
Stabilizer
bar
bushing
brackets

lo
subframe
crossmember
...
..
.
..
.
22
Nm
(16
ft-Ib)

"
Stabilizer
bar
link
bracket
lo

control
arm
................
.
.
.
.
.
42
Nm
(31
ft-1b)

"
Stabilizer
bar
link
lo
stabilizer
bar
(M10)
.............
.
42
Nm
(31
ft-Ib)

"
Stabilizer
bar
link
lostrut
or
bar
(M3)
.
59
Nm
(44
ft-Ib)

SUBFRAME
CROSSMEMBER

The
subframe
crossmember
provides
rigid
mounting'poínts

2
.
Remove
stabilizer
bar
connecting
link
from
stabilizer



for
the
engine,
suspension,
and
steering
components
.
The

baron
left
and
right
sides
.
See
Fig
.
15
.



crossmember
is
not
normally
subject
lo
wear
and
should
ohly

be
replaced
if
structurally
damaged
.

Removing
the
subframe
crossmember
requires
engine
lift-

ing
equipment
lo
support
theweight
of
tfhe
engine
from
above

so
that
the
subframe
can
be
removed
from
below
.

WARNING-

Removal
or
replacement
of
the
subframe
cross-

member
may
affect
suspension
and
steering
geom-
etry,
including
front
wheel
afignment
.
Make
appropriate
matching
marks
during
removal
and
have
the
front
end
aligned
once
repairs
are
com-
plete
.

Subframe
crossmember,
removing
and
installing

1
.
Using
enginesupport
equipment,
raise
engine
until

weight
of
engine
is
supported
.
See
110EngineRe-

moval
and
Installation
.
See
Fig
.
16
.

2
.
Raise
car
andremove
front
wheels
.

WARNING-

Make
sure
that
the
car
is
firmly
supportedon
jack

stands
desígned
for
the
purpose
.
Place
the
jack
stands
beneatha
structural
chassís
point
Do
not

place
jack
standsundersuspension
parts
.

SUBFRAME
CROSSMEMBER

310-
1
0



FRONT
SUSPENSION

Fig
.
16
.
Supportequipment
used
to
support
engine
from
aboye
.

SUBFRAME
CROSSMEMBER

Fig
.
17
.
Right
side
crossmember-to
body
mounting
bolts
.

3
.
Working
beneath
car,
remove
left
and
right
nuts
from



10
.
Installation
is
reverse
ofremoval,
noting
the
followíng
:

engine
mounts
.



"
Make
sure
all
bolts,bolt
holes,
and
mating
surfaces
are

clean
to
ensure
proper
tightening
and
alignment
.
Use
4
.
Remove
control
arm
bushing
carrier
from
body
.
Refer
to



new
self-locking
nuts
or
bolts,
where
applicable
.
Fig
.
9
.



"
On
vehicles
produced
up
9-92
only
:
-Remove
paint
from
contact
surfaces
before
ínstall-
5
.
Remove
control
arm
ball
joint
from
crossmember
.
Sep-



ing
crossmember
.
arate
joint
with
a
plastic
hammer
.
Suspend
control
arm



-Install
4
new
toothed
lock
washersbetween
sub-from
chassis
using
stiff
wire
.



frame
and
chassis
(install
new
washers
regardless

of
whether
washers
were
originally
fitted)
.
WARNING-



-Replace
all
4
mounting
bolts
.
Do
not
allow
the
control
arm
to
hang
from
the
ball



-Lubrícate
suspension
crossmember
bolts
with
LM48
¡oint
.
This
can
damage
theball¡oint
.



paste
orequivalent
anti-seize
compound
before
ín-
stalling
.

6
.
Unbolt
steering
rack
from
subframe
.
See
320
Steering



"
Lower
engine
onto
enginemounts,
allowing
it
to
settle

and
Wheel
Alignment
.
Suspend
steering
rack
from



fully
before
tightening
engine
mount
bolts
.

chassis
using
stiff
wire
.
Using
a
transmission
jackor



"
When
thejob
is
completed
have
front
end
profession-

equivalent,
support
crossmember
from
below
.



ally
aligned
.

7
.
Remove
reinforcing
brace
below
oil
pan,
where
appli-
cable
.



Tightening
Torques

"
Subframe
crossmember
to
body
8
.
Unbolt
crossmemberfrom
body
on
both
sides
.
See
Fig
.



M12-8
.8
bolts
..................
.
77
Nm
(56
ft-Ib)
17
.



M12-10
.9
bolts
.................
110
Nm
(81
ft-Ib)
M12-12
.9
bolts
............
.
...
.
105
Nm
(77
ft-Ib)
9
.
Slowly
Lower
crossmember,
making
sure
all
electrical



"
Steering
gear
to
subframe
crossmember
teads,
suspension
components
and
heat
shields
are



(M10-10
.9
self-locking
bolts)
..
.
.
.
.
.
42
Nm
(31
ft-Ib)
clear
during
removal
.



"
Control
arm
balljoint
to
subframe
crossmember
...
.......
.
85
Nm
(62
ft-Ib)

"
Control
arm
bushing
carrier

to
body
..........
...
.
.....
.
..
..
47
Nm
(34
ft-Ib)

320
Steering
and
Wheel
Alignment

GENERAL
...
.
.
.
...
.
....
.
.
.
.
.
.
.
.
.
...
.
.
320-1



Outer
tie
rod
end,
replacing
.
...
.
.
.
.
.
.
.
...
.
320-4

Tie
rod,
replacing
.
.
.
.
.
.
.
.......
.
.
.
.
.
...
.
320-5

STEERING
WHEEL



320-1

Steering
wheel,
removing
and
installing
.....
320-1



WHEEL
ALIGNMENT
.
.
.
.........
.
.....
.320-5

POWER
STEERING
SYSTEM
.
.
.
.
.
.
.....
320-2



Front
Toe-in
and
Toe
Difference
Angle
.
.
...
.
320-6

Power
steering
pump,



Rear
Toe-in
.
.
.
.
.
.
.
...
.
................
320-6
removing
and
installing
..
.
.
.
.
.
.
.
.
.
.....
320-2



Wheel
Alignment
Specifications
.....
.
......
320-6

Power
steering
system,
bleeding
and
filling
.
.
320-3

STEERING
GEAR
.
.
.
.
...
.
.
.
.
.
.
.
.
.
.....
320-3

Steering
gear
rack,

removing
and
installing
.
...
.
..
.
..
..
..
.
..
.
320-3

GENERAL



STEERING
WHEEL

This
repair
group
covers
servicing
of
the
mechanical
and



The
BMW
E36
is
equipped
with
an
SRS
airbag
mounted
in

hydraulic
components
of
the
steering
system,
including
wheel



the
steering
wheel
.
Improper
handling
of
the
airbag
could
alignment
information
.



cause
serious
injury
.
The
airbag
is
an
explosivedevice
and

should
be
treated
with
extreme
caution
.
Always
follow
the
air-

The
variable-assist
power
steering
system
consistsof
an



bag
removal
procedure
as
outlined
in
721
Airbag
System

engine-driven
hydraulic
pump,
a
rack-and-pinion
steering



(SRS)
.

gear
assembly
with
an
integral
hydraulic
control
valve,
and

connecting
linkage
to
the
road
wheels
.



WARNING-

"
The
BMW
Supplemental
Restraint
System
(SRS)
At
lowspeeds,
maximum
power
assist
is
provided
to
ease



is
complex
and
special
precautions
must
be
ob-

parking
and
city
driving
.
At
high
speeds,
assist
is
reduced
to



served
when
servicing
.
Serious
injury
may
result

ensure
stability
.
The
power
steering
system
varies
assist



if
system
service
is
attempted
by
persons
unfa-

based
on
engine
speed
.



miliar
with
the
BMW
SRS
and
its
approved
ser-
vice
procedures
.
BMW
specifies
that
all

ING-



inspection
and
service
shouldbe
performed
by
WARN
an
authorized
BMW
dealer
.
"
Do
not
reuse
self-locking
nuts
.
They
are
de-signed
to
beused
only
once
and
may
failif
re-



"
BMW
Supplemental
Restraint
Systems
(SRS)
used
.
Always
replace
them
with
new
locking
nuts
.



are
equipped
with
a
back-up
power
supply
inside
the
SRS
control
module
.
A
10minute
waiting
"
Do
not
ínstall
bolts
and
nuts
coated
with
under-



shouldbe
observed
after
the
battery
cable
has
coating
wax,
as
correct
tightening
torque
cannot



been
disconnected
.
This
will
allow
the
reserve
be
assured
.
Always
clean
the
threads
with
sol-



power
supply
to
discharge
.
vent
before
installation,
or
install
new
parts
.

"
Do
not
attempt
to
weldor
straighten
any
steering
components
.
Always
replace
damaged
parts
.

NOTE-

For
information
on
steering
column-mounted
switches
and
the
ignition
lock,
see
612
Switches
and
Electrical
Accessories
.

STEERING
AND
WHEEL
ALIGNMENT



320-1

Caster
and
Camber
.
.
.
.
.
...........
.
....
320-5

TABLES

a
.
Front
Wheel
Alignment
Specifications
.
...
.......
320-6
b
.
Rear
Wheel
Alignment
Specifications
.
...
.......
320-6

Steering
wheel,
removing
and
installing

1
.
Center
steering
wheel
.
Make
sure
front
wheelsare

pointed
straight
ahead
.

2
.
Disconnect
negative
(-)
cable
from
battery
and
cover

terminal
with
insulating
material
.

CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
viii
.

STEERING
WHEEL

320-2



STEERING
AND
WHEEL
ALIGNMENT

3
.
Carefully
remove
airbag
from
front
of
steering
wheel
.

See
721
Airbag
System
(SRS)
.
Store
airbag
unit
in
a

safe
place
.

WARNING-

Improper
handling
of
theaírbag
could
cause
seri-
ous
ínjury
.
Store
theaírbag
with
the
horn
pad
facing
up
.
If
stored
facing
down,
accidental
deployment
could
propel
it
vlolently
into
the
air,
causíng
ínjury
.

4
.
Remove
steering
wheel
center
bolt
.
Lightly
punch
mark

or
scribe
position
of
steering
wheel
to
steering
column

shaft
.
See
Fig
.
1
.

0012687
Fig
.
1
.
Steering
wheel
center
bolt
(arrow)
.



Power
steering
pump,

removing
and
installing

POWER
STEERING
SYSTEM

5
.
Unlock
steering
wheel
by
turning
ignition
key
on
.
Re-
move
steering
wheel
.

WARNING-

The
SRS
contact
reel
ís
mounted
to
the
rear
of
the
steering
wheel
hub
.
The
contact
reel
ís
a
wound
coil
ofwirethat
ensures
continuous
electrícal
contact
for
the
air
bag
unit
Once
the
steering
wheel
mounting
nut
or
bolt
is
removed
the
contact
reel
is
locked
in
the
center
position
and
its
position
must
not
be
al-
tered
.

6
.
Insta¡¡
steering
wheel
while
aligning
matching
marks
.
Make
sure
airbag
contact
ring
locking
pin
engages
cutout
in
contact
reel
.
Insta¡¡
steering
column
center
nut
.
Do
not
over-torque
.
See
Fig
.
2
.

7
.
The
remainder
ofinstallation
is
reverse
of
removal
.
Carefully
install
airbag
from
front
of
steering
wheel
.
See
721
Airbag
System
(SRS)
.

Tightening
Torque

"
Steering
wheel
to
steering
column
spindle
...
..
..
.
..........
63
Nm
(46
ft-Ib)

Fig
.
2
.



Insta¡¡
steering
wheel
so
that
locking
pin
in
column
aligns
with
cutout
in
contact
reel
(arrow)
.
Contact
reel
on
late
model
steering
wheel
may
vary
from
that
shown
.

POWER
STEERING
SYSTEM

Power
assist
is
províded
by
a
belt-driven
pump
on
the
lower

left
front
of
the
engine,
just
below
the
alternator
.
The
power

steering
fluid
resenroir
is
located
on
the
lower
left
front
of
the
engine
.

1
.
Empty
power
steering
fluid
reservoir
usingclean
sy-

ringe
.
Do
not
reuse
fluid
.

2
.
Raise
front
of
car
.

WARNING

Make
sure
thecar
is
firmly
supportedon
jack
stands
designed
for
the
purpose
.
Place
the
jack
stands
be-
neatha
structural
chassis
point
.
Do
not
place
jack
stands
undersuspension
parts
.

3
.
Remove
fluid
hoses
frbm
pump
.
Plug
openings
in
pump
and
in
hose
ends
.

4
.
Remove
drive
belt
from
power
steering
pump
.
See
020
Maintenance
Program
.

5
.
Remove
pump
mounting
bolts
and
remove
pump
.
See
Fig
.
3
.

Fig
.
3
.



Power
steering
pump
and
pulley
mounting
bolts
.

6
.
Installation
is
reverse
of
removal,
noting
the
following
:

"
Make
sure
al¡
thread
bores,
bolts,
nuts,
fluid
couplings

and
mating
surfaces
are
clean,
and
that
inside
surface

of
multi-ribbed-belt
is
free
of
grease
and
dirt
.

"
Use
new
sealing
washers
when
reattaching
power

steering
pressure
lines
.

"
Make
sure
hoses
have
adequate
clearance
from
chas-

sis
.
Do
not
over-torque
banjo
bolts
.

"
Fill
and
bleed
power
steering
system
as
described
be-

low
.

Power
steering
system,

bleeding
and
filling

1
.
Wíth
engine
off,
fill
power
steering
fluid
reservoir
with

clean
fluid
.
Fill
levelto
MAX
mark
on
dipstick
.

STEERING
AND
WHEEL
ALIGNMENT



320-
3

STEERING
GEAR
A
cutaway
of
the
power-assisted
rack-and-pinion
power

steering
gear
is
shown
in
Fig
.
4
.
The
rack
is
designed
to
be

maintenance
free
.

Pinion

Fig
.
4
.



Cutaway
of
rack-and-pinion
steering
gear
.

Tightening
Torques

"
Hydraulic
hoses
to
power
steering
pump



?he
steering
gear
and
linkage
require
no
maintenance
oth-

M10
banjo
bolt
.........
..
.
...
...
.
12
Nm
(9
ft-Ib)



er
than
alignment
and
a
periodic
inspection
for
worn
compo

M14
banjo
bolt
..............
..
..
35
Nm
(26
ft-Ib)



nents
.

M16
banjo
bolt
..............
...
.
40
Nm
(30
ft-Ib)

"
Power
steering
pump
to
bracket



Steering
gear
rack,
removing
and
installing
(self-locking
nuts)
.............
..
.
22
Nm
(16
ft-Ib)

"
Power
steering
pump
bracket
to
engine



1
.
Empty
power
steering
fluid
reservoir
using
clean
sy-

block
or
oil
pan
(self-locking
nuts)
...
22
Nm
(16
ft-lb)



ringe
.
Do
not
reuse
fluid
.

2
.
Disconnect
negative
(-)
cable
from
battery
and
cover

terminal
with
insulating
material
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery

disconnection
cautions
given
at
the
front
of
this

manual
on
page
viii
.

2
.
Start
engine
.
Slowly
turn
steering
wheelfrom
lock
to

lock
a
minimum
of
two
times
.



3
.
Carefully
remove
airbag
from
frontof
steering
wheel
.
See

721
Airbag
System
(SRS)
.
Store
airbag
unit
in
a
sale

3
.
Turn
engine
off
and
check
fluid
leve¡,
adding
fluid
if
nec-



place
.

essary
.
4
.
Make
sure
front
wheelsare
pointed
straight
ahead
.

5
.
Remove
outer
tie
rod
ball
joínt
nuts,
thenseparate
outer

tie
rod
ends
from
steering
arms
using
appropriate

press
tools
.

6
.
Disconnect
power
steering
hose
from
fluid
reservoir
.

STEERING
GEAR

340-
8
BRAKES

Fig
.
10
.
Brake
fluid
linesat
master
cylinder
(arrows)
.

6
.
If
fluid
reservoir
was
removed,
install
it
carefully
using
new
sealing
grommets
.

7
.
Mount
master
cylinder
to
brake
booster
using
a
new
0-
ring
and
new
self-locking
nuts
.

CAUTION-

Use
cave
not
to
over-torque
the
master
cylinder
mounting
nuts
.
This
could
damage
the
brake
booster
and
prevent
proper
vacuum
build-up
.

0012164

8
.
Connect
all
brake
fluid
lines
.
Connect
hydraulic
clutch
hose
to
brake
fluid
reservoir
.

9
.
Reconnect
fluid
leve¡
sender,
and
bleed
entire
brake
systemas
described
earlier
.

BRAKE
BOOSTER

BRAKE
BOOSTER

The
brake
booster
is
mounted
to
the
bulkhead
on
the
driver
sideofthe
engine
compartment,
directly
behind
the
brake
master
cylinder
.
See
Fig
.
11
.

0015225
Fig
.
11
.
Brake
booster
(arrow)
.
A
is
vacuum
hose
from
intake
mani-
fold
.
B
is
one-way
valve
.
Intake
manifold
vacuum
acts
ona
large
diaphragm
in
the
brake
booster
to
reducebrake
pedal
effort
.

Brake
booster,
removing
and
installing

1
.
Disconnect
negative
(-)
cable
from
battery
.

CAUTION-

Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpage
vi¡¡
.

Tightening
Torque

"
Brake
master
cylinder
to



2
.
Using
a
clean
syringe,
empty
brake
(luid
reservoir
.

brake
booster
.....
..
.
..
.........
26
Nm
(18
ft-Ib)



WARNING-
"
Brake
fluid
hose
to
caliper
....
17-19
Nm
(13-14
ft-Ib)



Brake
fluid
is
highly
corroslve
and
dangerous
to
the
environment
.
Dispose
of
it
properly
.

3
.
Remove
brake
fluid
level
sender
connector
from
reser-
voir
cap
.

4
.
Disconnectbrake
fluid
lines
from
master
cylinder
.
Plug
openings
.

5
.
Disconnect
engine
vacuum
hose
from
brake
booster
.

6
.
Disconnect
ABS
electrical
connectors
.
Label
and
then

disconnect
brake
lines
from
hydraulic
brake
unit
.
Plug

openíngs
.
See
Fig
.
12
.

~
~
A
1/
B
'1v
C
~
F

lu
11
-ri
J
.

0013244
A
.
Right
front



F



Front
from
master
cylinder
B
.
Leftfront



R
.
Rear
from
master
cylinder
C
.
Rear

Fig
.
12
.
Brake
fluid
linesat
ABS
hydraulic
unit
.

WARNING
-

"
On
cars
with
All
Season
Traction
(AST),
special
BMW
service
equipment
is
required
to
properly
bleed
the
Antilock
Brake
System
(ABS)
.
Removal
of
the
ABS
hydraulic
unit
is
not
recommended
un-
less
this
equipment
is
available
.
For
safetyrea-
sons,
the
brake
system
on
cars
with
ABS
must

not
be
bled
using
the
procedures
described
inthis
repair
group
.

"
Do
not
mix
up
the
fluid
fines
at
the
ABS
hydraulic
unit
Label
all
connections
before
disconnecting
.

7
.
Remove
ABS
hydraulic
unit
from
engine
compartment
.

8
.
Working
inside
car,
remove
panel(s)
frombeneath

steering
column
to
access
pedal
assembly
.
See513
In-

terior
Trim
.

12
.
Make
sure
al¡
nuts,
fluid
couplings,
thread
bores
and

mating
surfaces
are
clean
.

BRAKES
340-
9

0011261

Fig
.
13
.
Brake
pedal
clevispin
and
retaining
clip
(A)
.
Brake
booster
mounting
nuts
shown
at
arrows
.

13
.
If
necessary,
mount
master
cylinder
to
vacuum
booster

using
a
new
O-ríng
and
newself-locking
nuts
.

CAUTION-

Do
not
over-torque
the
master
cylinder
mounting
bolts
.
This
could
damage
the
brake
booster
and
prevent
proper
vacuum
build-up
.

14
.
Installation
is
reverse
of
Rmoval
.

"
Bleed
brakes
as
described
earlier
.

"
Check
and,
if
necessary,
adjust
brake
light
switch

above
brake
pedal
.

Tightening
Torques

"
Brakemaster
cylinder
to

brake
booster
...........
.
..
..
...
26
Nm
(18
ft-Ib)

"
Brake
booster
to
bulkhead
.
.
..
..
...
22
Nm
(16
ft-Ib)

"
Brake
fluidline
to
master
cylinder
or

ABS
hydraulic
unit
.......
.
..
17-19
Nm
(13-14
ft-lb)
9
.
Remove
clip
and
clevis
pin
from
brake
booster
pushrod

and
disconnect
it
from
brakepedal
.
Remove
brake

booster
mounting
nuts
.
See
Fig
.
13
.
NOTE-

10
.
Working
in
engine
compartment,
remove
brake
booster



When
replacing
the
brake
booster
one-way
valve
or
together
with
master
cylinder
.



vacuum
hose,
install
the
valve
so
that
the
molded
arrow

is
pointing
toward
the
intake
manifold
.
Use
new
hose

11
.
If
booster
or
master
cylinder
O-ring
is
being
replaced,



clamps
.

disconnect
master
cylinder
from
brake
booster
.

BRAKE
BOOSTER