1993 BMW M3 wheel bolts

6
.
Remove
brake
pads
from
caliper
.
Where
applicable,
carefully
pry
pad
wear
sensor
from
pad
.
See
Fig
.
5
.

Fig
.
5
.



Removing
brake
pad
wear
sensor
.

7
.
Inspect
brake
caliper
for
signs
of
leakage
.
Check
that
the
caliper
piston
slides
smoothly
into
caliper
.
Replace
caliper
if
any
faults
are
found
.

CAUTION-

With
the
pads
removed,
residual
hydreulic
pres-
sure
may
cause
the
caliper
piston
to
slide
out
.
Use
a
wooden
block
to
hold
the
piston
in
place
.

8
.
fnsert
brake
pad
wear
sensor
into
cutout
in
new
pad

where
applicable
.

14
.
Place
inner
brake
pad
(with
locating
spring)
ontobrake
NOTE-



caliper
piston
.
Route
pad
wear
sensor
wiring
through
lf
the
brake
lining
indicator
light
illuminated
prior
to



caliper
opening
and
bleeder
dust
cap
.
brake
pad
replacement,
the
wear
sensor
should
be
re-
placed
.



15
.
The
remainder
of
installation
is
reverse
of
removal
.

"
Do
not
lubricate
guide
boits
.
9
.
Slowly
press
piston
back
into
caliper
.
Use
cace
not
to



"
Once
brake
assembly
is
installed
depress
brakepedal
damage
piston
dust
sea¡
.
See
Fig
.
6
.



severa¡
times
before
driving
vehicle
.

NOTE-

"
Open
caliper
bleeder
screw
when
pressing
piston



Tightening
Torques

back
into
caliper
.
Catch
expelled
fluidin
appropriate



"
Brake
caliper
to
brake
pad

container
.
This
procedure
is
highly
recommended
in



carrier
(guide
bolt)
..........
...
.
.
30
Nm
(22
ft-Ib)

the
case
of
cars
with
ABS
.



"
Road
wheel
to
hub



.....
.
..
100±10
Nm
(74±7
ft-Ib)

"
Open
the
bleeder
screw
only
when
applying
force
to
the
piston
.
Do
not
allow
airto
be
drawn
in
through
the
bleeder
screw
.

"
Pressing
the
caliper
piston
in
may
cause
the
brake
flu-
id
reservoir
to
overflow
.
To
prevent
this,
use
a
clean
syringe
to
first
remove
some
fluid
from
the
reservoir
.

BRAKES
340-
5

0012157
Fig
.
6
.



Brake
caliper
piston
being
pressed
into
caliper
to
make
room
for
new
pads
.
Usea
rag
toprotect
caliper
piston
and
seals
.

10
.
Thoroughly
clean
inner
and
outer
surfaces
of
brake
ro-
tor
.
Inspect
rotor
for
cracks,
signs
of
overheating
and
0012156
scoring
.

11
.
Measure
thickness
of
rotor
.
See
Table
b
.
If
rotor
does
not
pass
minimum
thickness
requirements,
or
is
dam-

aged,
replace
as
described
later
.

12
.
Thoroughly
clean
all
contact
points
on
caliper
and
brake
pad
carrier
.
Clean
guide
bolts
and
make
surethey
slide
freely

13
.
Lightly
coat
pad
contact
points
with
brake
anti-squeal
paste
.
Place
outer
brake
pad
onto
caliper
.
Applya
small
amount
of
grease
to
thetop
and
bottom
contact
points
where
the
caliper
contacts
the
pad
carrier
.

BRAKE
PADS,CALIPERS,
ANDROTORS

340-
6BRAKES

bolt~



Guide
bolt

caps
covers
Brake
caliper
Shoe
retaining
píns

Parking
brake
cable

Fig
.
7
.



Rear
brake
caliper
assembly
.

Caliper
guide



Brake



ad
bolts
,



Bleeder
valve



i
_
~wear
sénsor
®



and
dust
cap



(right
wheel
V
.
.,,,

Brake
caliper,
removing
and
installing

1
.
Raise
car
and
remove
wheel
.

WARNING
-

Make
sure
the
car
is
firmly
supported
on
jack
standsdesigned
for
the
purpose
.

2
.
Loosen
brake
hose
fitting
at
caliper
.
Do
not
remove
.

3
.
Remove
caliper
mounting
bolts
from
steering
arm
(Font

caliper)or
from
trailing
arm
(rear
caliper)
.
See
Fig
.
8
.

4
.
Press
piston
back
into
caliper
and
slide
caliper
off
brake

rotor
.
Spin
caliper
off
brake
hose
.

5
.
Inspect
brake
caliper
for
signs
of
leakage
.
Check
that
caliper
piston
slides
smoothly
into
caliper
.
Replace
cal-

iper
if
any
faults
are
found
.

6
.
Installation
is
reverse
of
removal
.
Bleed
entire
brake

system
before
driving
car
.
See
Bleeding
Brakes
.

Tightening
Torques

"
Front
brake
caliper
to
steering
arm
..
110
Nm
(81
ft-Ib)

"
Rear
brake
caliper
to
trailing
arm
....
67
Nm
(50
ft-Ib)

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

"
Road
wheel
to
hub



........
100±10
Nm
(74±7
ft-Ib)

BRAKE
PADS,CALIPERS,
ANDROTÓRS

Cover

Caliper



!



Brake
pad
Oringiston



carne
-
p

Circli

©
ot~
AV
~:
Z



1vo~
Spring
and
spring
retainer



uust
seas



~~



Aniráttle

j),
Brake



spring
Shoe
pads
_
_

adjuster



per
return

nf

MIL

Rotor
with
integrated
parking
brake
drum
6573

0011256

Fig
.
8
.



Front
brake
pad
carrier
mounting
bolts
(arrows)
.
Rear
caliper
mounting
bolts
are
similar
.

7
.
Turn
on
ignition
.
Check
that
light
comes
on
as
soonas



4
.
Remove
parkíng
brake
shoes
as
described
above
.

lever
is
pulled
up
.
5
.
Disconnect
cable
from
parking
brake
actuator
and
then

8
.
Install
parking
brake
lever
boot
.
Install
road
wheel
lug



remove
parking
brakecable
from
cable
holder
on
trail-

bolts
.



ing
arm
.
See
Fig
.
17
.

Tightening
Torque

"
Road
wheel
to
hub
.
..
......
100±10
Nm
(74±7
ft-Ib)

Parking
brake
shoes,

removing
and
installing

1.
Raise
rear
of
car
andremove
road
wheels
.

WARNING
-

Make
sure
the
car
is
firmly
supportedon
jack
stands

designed
for
the
purpose
.
Place
the
jack
stands
be-

neath
a
structural
chassis
point
.
Do
not
place
jack

stands
undersuspension
parts
.

2
.
Without
disconnecting
brake
fluid
hose,
remove
rear

brake
calipers
from
trailing
arms
.
Remove
rear
brake

rotors
.
See
Brake
Pads,
Calipers
and
Rotors
.

CA
UTION-

Do
not
let
the
brake
caliper
assembly
hang
from

the
brake
hose
.
Support
caliper
from
chassis
with
strong
wire
.

3
.
Unhook
upper
return
spring
from
brake
shoes
.
Remove

shoe
retainers
bypushing
them
in
and
rotating
1
/4turn
.

BMW
special
tool
no
.
344
000
can
beused
to
remove

retainers,
if
needed
.

4
.
Spread
shoes
apart
and
lift
them
out
.



7
.
Installation
is
reverse
of
removal
.
Adjust
parking
brake

as
described
earlier
.

NOTE-

When
removing
the
brake
shoes
the
shoe
expander
pivot
pin
in
the
brake
actuator
may
fall
out
.

Two
versions
of
the
Antilock
Brake
System
(ABS)
are
in-

5
.
Inspect
shoe
expander
to
make
sure
it
functions
prop-



stalled
onthe
cars
coveredby
this
manual
.
Early
cars
use
the

erly
.
Apply
a
thin
coat
of
grease
tosliding
parts
and



Teves
Mark
IV
G
ABS
.
Later
cars
use
the
Teves
Mark
20-I

pins
.



ABS
.
The
main
difference
between
the
two
systems
is
that
the

Mark
20-I
system
integrates
the
ABS
control
module
into
the

6
.
Installation
is
reverse
of
removal
.
Be
sure
to
adjust



hydraulic
unit
as
a
single
component
.

parking
brake
cables
as
described
earlier
.

ABS
is
designed
to
be
maintenance
free
.
There
are
noad
Parking
brake
cable,
replacing



justments
that
canbe
made
to
the
system
.
Repair
and
trouble-

shooting
of
the
major
ABS
components
requires
special
test

1
.
Raise
rear
of
car
and
remove
road
wheels
.



equipment
and
knowiedge
and
should
be
done
by
an
autho-

rized
BMW
dealer
.

2
.
Remove
rear
brake
caliper
and
rotor
.
See
Brake
Pads,

Calipers
and
Rotors
.

3
.
Working
inside
car,
lift
parking
brake
lever
boot
out
of

console
.
Remove
cable
adjusting
nut
.
Refer
to
Fig
.
15
.

Fig
.
17
.
Parking
brake
cable
insertion
point
in
rear
trailing
arm
(arrow)
.

6
.
Slide
cable
out
of
housing
.

NOTE
-

BRAKES
340-
1
1

On
some
models
it
may
be
necessary
to
remove
rear

muffler
to
access
the
brake
cabes)
.

ANTILOCK
BRAKE
SYSTEM
(ABS)

0013209

ANTILOCK
BRAKE
SYSTEM
(ABS)

GENERAL

This
repair
group
covers
replacement
of
the
front
fenders

and
removal
and
installation
of
the
engine
hood
.

NOTE-

The
body
is
painted
at
the
factoryafter
assembly
.
Re-
alignment
of
body
panels
may
expose
unpainted
metal
.

Paint
all
exposed
metal
once
the
work
fs
complete
.

FRONT
FENDERS

Front
fender,
removing
and
installing

1
.
Raise
hood
.
Raise
and
safely
support
front
of
vehicle
.

WARNING
-

"
When
raising
thecar
using
a
floor
jack
or
a
hy-

draulic
lift,
carefully
position
the
jack
pad
to
pre-

vent
damaging
thecar
body
.
A
suitable
liner
(wood,
rubber,
etc
.)
should
be
placed
between
the
jack
and
the
car
to
prevent
body
damage
.

"
Watch
the
jack
closely
.
Make
sure
it
stays
stable
and
does
not
shift
or
tilt
.
As
the
car
is
raised,
the

car
may
roll
slightly
and
the
jack
may
shift
.

2
.
Remove
front
wheel
.
Remove
inner
plastic
liner
from

wheel
well
.

3
.
Remove
front
bumper
.
See510
Exterior
Trim,

Bumpers
.

4
.
Working
atfront
corner
of
fender,
remove
front
grille

panel
bolts
(2
bolts
at
left
and
right)
.
See
Fig
.
1
.

FENDERS,
ENGINE
HOOD



410-1

410
Fenders,
Engine
Hood

GENERAL
...............
.
.
.
.
.
.
.
.
.
.
.
..
410-1



ENGINE
HOOD
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
...
.
.410-3

Hood,
raising
to
service
position
.
.
.
.
.
.
.
.
...
410-3
FRONTFENDERS
........
.
.
.
.
.
.
.
.
.
.
.
.
.410-1



Hood,
removin



and
installin



410-3

Front
Pender,
removing
and
installing
.
.
.
....
410-1



Hood,
aligning
...
.
.
.
.
.
.
.
.....
.
.
.
.
.
.
.
...
410-4

Hood
release
cable
and
latches,
adjusting
...
410-4

001
.145

Fig
.
1
.



Front
grille
panel
to
front
fender
retaining
bolts
(arrows)
.
Front

bumpershown
removed
.

5
.
Remove
front
turn
signalliens
assembly
from
applica-

ble
front
corner
.
Carefully
pryout
side
directional
from

fender
(later
cars
only)
.
See
630
Exterior
Lighting
.

6
.
Remove
fender
attaching
bolts
atfront
underside
of

fender
.
See
Fig
.
2
.

7
.
Remove
bolts
along
top
edge
of
fender
:
See
Fig
.
3
.

8
.
Open
front
door
and
remove
fender
mounting
bolts
in

door
jamb
.
See
Fig
.
4
.

9
.
Carefully
remove
fender
from
body
.

FRONTFENDERS

510-4



EXTERIOR
TRIM,
BUMPERS

Fig
.
8
.



Bumper
cover
retaining
screws
(arrows)
in
left
wheel
weil
.

7
.
Disconnect
harnessconnectors
at
outside
temperature



0013052

sensor
at
rear
of
left
side
of
bumperand
temperatura



Fig
.
9
.



Front
bumper
impact
absorber
mounting
nuts
(A)
and

switch
at
rear
of
right
side
of
bumper
(if
applicable)
.



bumper
bracket
hardware
(B)
.

8
.
Slide
bumper
straight
off
sida
brackets
.

9
.
Installation
is
reverse
of
removal,
notingthe
following
:



When
removing
and
installing
therear
bumper
or
its
compo-

"
Slide
side
brackets
on
bumper
and
body
carefully
to-



nents,
referto
Fig
.
10
.

gether
.

"
Make
sure
tabs
on
trim
strip
engage
slots
in
bumper



1
.
Raise
and
properly
support
vehicle
.

correctly
.

Tightening
Torque

"
Bumper
to
bumper

bracket
(M8
nut)
............
...
.
.
22
Nm
(16
ft-Ib)

2
.
Working
under
bumper,
remove
screws
or
expansion

Front
bumper
impact
absorber,replacing



rivetsat
corners
and
middle
of
lower
bumper
panel
.
Pull

panel
backward,
uncoupling
it
from
bumper
cover
.
See

Thebumper
mounting
bracket
and
impact
absorber
mount-



Fig
.
11
.

ing
hardware
are
accessible
with
the
Font
bumper
removed,
as
described
above
.
See
Fig
.
9
.



3
.
Remove
bumper
cover
expansion
rivets
and
screws
in-

side
left
and
right
rear
wheel
wells
.

NOTE
-

Install
the
bumper
bracket
boltwith
thread
locking
com-
pound
suchas
Loctite
8
270
or
equivalent
.

Tightening
Torques

"
Bumper
bracket
to
impact
absorber

(M10
nut)
.
..
.
...
.............:.
55
Nm
(41
ft-Ib)
"
Impact
absorber
to
chassis
(M6
nut)
...
9
Nm
(7
ft-Ib)

BUMPERS

Rear
bumper,
removing
and
installing

WARNING
-

Make
sure
that
the
car
is
firmly
supported
on
jack

stands
designad
for
the
purpose
.
Place
the
jack

stands
beneath
a
structural
chassis
point
.
Do
not

place
jack
stands
under
suspension
parts
.

4
.
Remove
left
and
right
bumper
bracket
mounting
bolts

and
remove
bumper
.
See
Fig
.
12
.

5
.
Installation
is
reverse
of
removal
.

NOTE-

Install
the
bumper
bracket
bolt
with
thread
locking
com-
pound
suchas
Loctite®270
or
equivalent
.

Dashboard,
removing
and
installing

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
terminal
with
insulating
material
.

CAUTION-

Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautionsgiven
at
the
front
of
this
manual
onpage
vi¡¡
.

2
.
Remove
center
console
as
described
earlier
.

3
.
Remove
glove
compartment
as
described
earlier
.

4
.
Remove
lower
left
dash
trim
piece
as
described
above
.
Remove
lower
right
dash
trim
panel
.
See
Fig
.
4
.

Fig
.
4
.



Lower
right
dash
trim
piece
retaining
screw
(arrow)
.

WARNING
-

Store
the
removed
airbags
in
a
safe
place
.
Position
the
airbags
facing
up
.

8
.
Remove
instrument
cluster
.
See
620
Instruments
.

5
.
Remove
driver
and
passenger
airbags
.
See
721
Air-

bag
System
(SRS)
.

6
.
Remove
steering
wheel
.
See
320
Steering
and
Wheel
Alignment
.

INTERIOR
TRIM



513-
3

Fig
.
5
.



Driver
side
knee
bolster
mounting
bolts
(arrows)
.

9
.
Remove
headlight
switch
.
Remove
turn
signal
and
windshield
wiper/washer
stalk
switches
.
See612
Switches
and
Electrical
Accessories
.

10
.
Remove
A/C
control
head
and
module
.
See
640
Heat-ing
and
Air
Conditioning
.

11
.
Remove
radio
.
See650
Radio
.

12
.
Remove
A-pillar
(windshield
pillar)
trim
on
left
and
right
sides
.
See
Fig
.
6
.

UU13156
Fig
.
6
.



A-pillar
(windshield
pillar)
trim
removal
.
Right
side
shown,
left
7
.
Remove
driver
side
knee
bolster
.
See
Fig
.
5
.



is
similar
.

DASHBOARD

721-
6



AIRBAG
SYSTEM
(SRS)

5
.
Carefully
lift
airbag
unit
off
steering
wheel
and
discon-



6
.
Installation
is
reverse
of
removal
.
Tighten
right
side
nect
orange
harness
connector
from
rear
of
airbag
unit
.



screw
on
airbag
first
(as
viewedfrom
driver's
seat),

See
Fig
.
10
.



then
left
side
screw
.

NOTE-



NOTE-

In
some
models,
theairbag
electrical
connection
to
the



If
there
is
no
electrical
harness
connector
between
the
steering
wheel
isvia
aplug
in
back
of
the
airbag
unit
.



airbag
and
the
steering
wheel,
be
sure
to
fit
the
push
There
is
no
wire
harness
to
disconnect
.



in
electrical
plug
in
back
of
the
airbag
finto
the
proper
re-
ceptacle
in
the
steering
wheel
.

Fig
.
10
.
Driver
sideairbag
unit
harness
connector
(arrow)
.

AIRBAGS

WARNING
-

"
Store
the
removed
airbag
unit
with
the
horn
pad
facing
up
.
If
stored
facing
down,
accidental
de-
ployment
couldpropel
it
violently
into
the
air,
causing
injury
.

"
Once
an
airbag
is
removed,
the
car
must
not
be
driven
.

"
Do
not
connect
the
battery
with
the
airbag
dis-
connected
.
A
fault
code
will
be
stored,
setting
off
the
SRS
warning
light
.
Special
tools
are
needed
to
reset
the
fault
memory
.

"
Special
instructions
apply
when
installing
an
air-
bag
equipped
steering
wheel
.
See
320
Steering
and
Wheel
Alignment
.

"
Once
the
airbag
unit
is
installnd
and
all
other
ser-vice
procedureshave
been
completed,
start
the
engíne
and
check
that
the
SRS
warning
light
goes
out
.
If
the
warning
light
stays
on,
the
SRS
system
will
not
function
as
designed
.
Have
the
system
diagnosed
and
repaired
by
an
authorized
BMW
dealer
.

0013184

Tightening
Torque

"
Airbag
unitto
steering
wheel
........
8
Nm
(71
in-lb)

Passenger
side
airbag,

removing
and
installing

1
.
Disconnect
negative
(-)
cable
from
battery
and
cover
negative
terminal
with
insulating
material
.

2
.
Remove
glove
compartment
.
See
513
Interior
Trim
.

3
.
Lift
cover
from
topof
passenger
sideairbag
on
dash-
board
.
See
Fig
.
11
.

0013108
Fig
.
11
.
After
removing
glove
compartment,
lift
out
passenger
side
air-
bag
cover
.
Note
airbag
mounting
bolts
(A)
and
airbag
electri-
cal
connector
(B)
.

4
.
Remove
passenger
sideairbag
mounting
bolts
.
Dis-
connect
electrical
harness
connector
from
rear
of
air-
bag
unit
and
remove
airbag
.

5
.
Installation
is
reverse
of
removal
.
Make
sure
wiring
har-
ness
is
not
pínched
when
installing
airbag
unit
in
dash-board
.