rear suspension BMW M3 1993 E36 Owner's Guide

Fig
.
11
.
Drive
flange
collar
nut
(arrow)
.

0012111

8
.
Support
trailing
arm
from
below,
using
a
transmission

jackorequivalent
.
Remove
shock
absorber
to
trailing

arm
bolt
.

WARNING
-

It
is
recommended
that
a
restraining
chain
be
in-
stalled
between
the
bottom
coil
of
the
coil
spring
and
the
upper
control
arm
to
retain
thespring
in
case
of
accidental
release
.
Personal
injury
can
re-
sult
if
the
compressed
coil
spring
is
not
released
slowly
and
carefully
.

REAR
SUSPENSION



330-
7

9
.
Lower
trailing
arm
sufficiently
to
gain
clearance
for
re-
moving
drive
axle
.
If
necessary
use
an
appropriate
puller
to
Rmove
drive
axle
from
wheel
bearing
housing
.
See
Fig
.
13
.

10
.
Installation
is
reverse
of
removal
.

Fig
.
13
.
Press
drive
axle
from
wheel
bearing
housing
using
puller
.

"
Apply
a
light
coating
of
oil
to
contact
face
of
collar
nut,
and
install
it
loosely
.

"
Install
road
wheel
and
lower
car
to
ground
.
"
With
an
assistant
applying
brakes,
tighten
drive
axle
collar
nut
to
its
final
torque
.

"
Install
a
new
collar
nut
retaining
plate
.

Tightening
Torques

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

"
Brake
rotor
to
drive
flange
.........
16
Nm
(12
ft-Ib)

"
Drive
axle
collar
nut
to

drive
flange
.
.
....
..
.
..........
250
Nm
(184
ft-Ib)

M3
......
.
.
.....
.
.
..........
300
Nm
(221
ft-Ib)

"
Drive
axie
to
final
drive
unit
mounting
flange
.
.
.
.....
M8
Torx
bolt
.
...
...
.
............
64
Nm
(47
ft-Ib)
M10
Torx
bolt
...
...............
100
Nm
(74
ft-Ib)

Road
wheel
to
hub100±10
Nm
(74t7
ft-Ib)
0012103



"
Shock
absorber
to
Fig
.
12
.
Drive
axle
to
final
drive
mounting
bolts
(arrows)
.



trailing
arm
.
.
...
...
.
............
77
Nm
(57
ft-Ib)

DRIVE
AXLES

330-
8



REAR
SUSPENSION

CV
boot,
replacing

NOTE-

"
The
outer
CV
joint
cannot
be
removed
from
the
axle
shaft
.
In
order
to
replace
the
outer
CV
boot,
it
is
nec-
essary
to
remove
the
inner
joint
and
boot
first
.

"
If
the
CV
joints
are
worn
or
defective,
acomplete
re-

built
axle
shaft
is
available
from
an
authorized
BMW
dealerparts
department
.

1
.
Remove
drive
axle
from
car
as
described
above
.

2
.
Remove
inner
and
outer
CV
boot
clamping
bands
and

cut
old
boots
off
joints
and
shaft
.
Clean
grease
from

joints
.

3
.
Lift
off
dust
cover
from
inner
CV
joint
and
remove
circlip



5
.
Clean
all
old
lubricantoff
shaftsplines
and
inner
joint's

retaining
joint
inner
hub
to
axle
shaft
.
See
Fig
.
14
.



splines
.

DRIVE
AXLES

-0
1
,
1
1,1
1
L
"I
C
OYA

Drive
axle-"
e
:>,



)



0006560

CV
joint

Fig
.
15
.
Support
CV
joint
at
inner
hub
duringpressing
operation
(ar-
rows)
.

NOTE-

To
inspect
a
CV
joint,
clean
away
the
grease
and
look
for
galling,pittihg
and
othersigns
of
wear
or
physical
damage
.
Polished
surfaces
or
visible
ball
tracks
alone

are
not
necessarily
cause
for
replacement
.
Discolora-

tion
due
to
overheating
indicates
lackof
lubrication
.

6
.
Place
new
clamping
bands
and
CV
boots
over
drive
ax-

le
.

NOTE-

When
replacing
CV
joint
boots,
usecomplete
CV
joint

boot
repair
kits
.
A
kit
will
include
a
new
boot,
clamping

bands,
special
lubricant,
and
anew
inner
CV
joint
cir-
clip
.
The
kit
is
available
from
an
authorized
BMW
dealer
parts
department
.

7
.
Apply
Loctite
®
270
or
an
equívalent
heavy-duty
lockíng

compound
to
drive
axlesplines
.
Position
new
CV
joint

on
shaft
so
that
raisedor
taller
side
of
hub
is
facing
shaft
.

WARNING
-

Fig
.
14
.
Dust
cover
shown
removed
from
inner
CV
joint
.
Clean
away



Do
not
let
the
locking
compound
contact
the
balls
in

grease
and
remove
circlip
(arrow)
from
shaft
end
.



the
joint
.
Apply
only
a
thin
coat
to
cover
the
splines
.

4
.
While
supporting
inner
hub,
press
axle
shaft
out
of
joint
.



8
.
While
supporting
axle
shaft,
press
inner
hub
of
CV
joint

See
Fig
.
15
.



onto
shaft
.
Install
new
circlip
.

NOTE-

Do
not
let
the
ball
hub
pivot
more
than
20°
in
the
outer
ring
of
the
joint
.
The
halls
will
fall
out
if
the
hub
ís
pivoted
too
far
.

9
.
Packeach
CV
joint
and
rubber
boot
with
specified



REAR
SUSPENSION
ARMS
amount
of
lubricant
supplied
.
Apply
adhesive
to
large
end
of
boot
and
mount
it
on
joint
.
Secure
boot
with
clamps
.



The
trailing
arms,
control
arms
and
their
mountingbushings
Apply
sealer
to
inner
CV
joint
dust
cover
and
instan
.



control
the
position
of
the
rear
wheels
.
A
damaged
suspen-
sion
arm
or
worn
bushings
will
change
the
rear
wheel
align
NOTE-



ment
and
may
adversely
affect
handling
and
stability
.
"
Before
installing
each
small
boot
clamp
be
sure
to
"burp"
the
boot
by
flexing
the
CV
joint
as
far
overas
it



WARNING
will
go
.
A
small
screw-driver
inserted
between
the



Do
notattempt
to
straighten
a
damaged
suspension
boot
and
the
axle-shaft
will
help
the
process
.



arm
.
Bending
or
heating
may
weaken
the
original
"
BMW
recommends
Bostil101513
or
EppleC4851
ad-



part
.
If
the
suspension
arm
shows
any
signs
of
hesive,
and
Epple®39
or
Curil©T
sealer



damage
or
excessive
corrosion,
it
must
be
re-
placed
.

CV
Joint
Lubricant
Capacity

"
Wheel
hub
end

ex
.
M3
..
..
.
....
.
.............
80
gram
(2.8
oz
.)
M3
..
...
.
..
.................
100
gram
(3
.5
oz
.)

"
Finaldrive
end
.................
85
gram
(3
.0
oz
.)

10
.
Install
drive
axle
as
described
earlier
.

1
.



Final
drive
carrier
2
.



Stabilizer
bar
3
.



Upper
control
arm4
.



Lower
control
arm5
.



Trailing
arm6
.



Trailing
arm
front
bracket

Fig
.
16
.
Rear
trailing
arms,
control
arms
and
final
drive
carrier
.

If
the
rear
brake
cine
is
disconnected
to
remove
a
trailing
arm,
the
complete
braking
system
must
be
bled
as
partof
the
installation
procedure
.

When
performing
repairs
to
rear
suspension
components,
refer
to
Fig
.
16
.

REAR
SUSPENSION



330-
9

0013112

REAR
SUSPENSION
ARMS

330-
1
0



REAR
SUSPENSION

Trailing
arm,
removing
and
installing

1
.
Raise
rear
end
of
car
and
remove
wheel
.

WARNING
-

Make
sure
that
the
car
is
firmly
supported
on
jack
standsdesigned
for
the
purpose
.
Place
the
jack
standsbeneatha
structural
chassis
point
.
Do
not
place
jack
stands
under
suspension
parts
.

2
.
Remove
drive
axle
as
described
earlier
.

3
.
Remove
brake
rotor
and
caliper
as
described
in
340

Brakes
.
Do
not
remove
brake
line
from
caliper
.
Hang

caliper
from
body
with
wire
.

4
.
Remove
parking
brakecable
frombrake
shoe
expand-

er
.
See
340
Brakes
.

5
.
Remove
rear
brake
line
bracket
from
trailing
arm
.
See

Fig
.
17
.

Fig
.
17
.
Brake
line
bracket
bolts
on
trailing
arm
(arrow)
.

WARNING
-

It
is
recommended
that
a
restraining
chain
be
in-
stalled
between
the
bottom
coil
of
the
coil
spring
and
the
upper
control
arm
to
retainthe
spring
in
case
of
accidentalrelease
.
Personal
injury
can
re-sult
if
the
compressed
coil
spring
is
not
released
slow1y
and
carefully
.

REAR
SUSPENSION
ARMS

6
.
Support
trailing
arm
from
below
with
a
transmission
jackorequivalent
.

7
.
Remove
shock
absorber
to
trailing
arm
bolt
.
See
Fig
.
18
.
Slowly
lower
suspension
until
coil
spring
can
be
safely
removed
.

0013220

Fig
.
18
.
Support
trailing
arm
before
removing
lower
shock
bolt
(ar-

row)
.

8
.
Unbolt
upper
and
lower
control
arms
from
trailing
arm,

as
described
later
.

9
.
Remove
ABS
wheel
speed
sensor
from
rear
wheel

bearing
housing
.
Unclip
sensor
wiríng
from
trailing
arm
.

If
removing
right
trailing
arm,
separate
brake
pad
wear

sensor
connector
.
See
Fig
.
19
.

0012104

Fig
.
19
.
Brake
pad
wear
sensor
and
ABS
wheel
speed
sensor
con-
nectors
(arrow)
.

10
.
Remove
three
bolts
holding
trailing
arm
front
bracket
to
body
.
See
Fig
.
20
.
Remove
trailing
arm
.

Fig
.
20
.
Trailing
arm
front
bracket
bolts
(arrows)
.

NOTE-

BMW-supplied
replacement
trailing
arms
come
with
the
bushings
installed
.
Anew
wheel
bearing
will
have
to
be
installed
.

0013222

11
.
If
trailing
arm
is
being
replaced,
transfer
trailing
arm
front
bracket
.
Transfer
attached
brake
system
compo-
nents
to
newarm
as
described
in
340Brakes
.
Insta¡¡
a
new
wheel
bearing
as
described
earlier
under
Rear
Wheel
Bearings
.

12
.
Installation
is
reverse
of
removal
.
"
Alwaysuse
new
self-locking
nuts
.
"
Have
car
professionally
aligned
when
job
is
complete
.

Tightening
Torques

"
Drive
axle
#o
final
drive
unit
mounting
flange
M8
Torx
bolt
......
.
...
.....
.
..
..
64
Nm
(47
ft-Ib)
M10
Torx
bolt
.....
...
.
....
.....
100
Nm
(74
ft-Ib)

"
Road
wheel
to
wheel
hub
.
...
100±10
Nm
(74t7
ft-Ib)

"
Shock
absorber
to
trailing
arm
......
77
Nm
(57
ft-Ib)
"
Trailing
arm
tofront
bracket
.......
110
Nm
(81
ft-Ib)

"
Trailing
arm
bracket
to
body
........
77
Nm
(57
ft-Ib)

"Trailing
arm
to
upper

or
lower
control
arm
(M12
bolt)
....
110
Nm
(81
ft-Ib)

REAR
SUSPENSION



330-
1
1

Trailing
arm
bushing,
replacing

NOTE-

When
replacing
any
bushing
in
the
rear
trailing
arm,
measure
and
recordthe
orientation
and
protrusion
of
the
bushing
from
its
boss
.
Press
in
new
bushing
to
match
the
positionof
theold
one
.

1
.
Remove
trailing
arm
as
described
above
.

2
.
Pressbushing
out
of
trailing
arm
using
appropriate
press
tools
.

3
.
Coat
new
bushing
with
Circolight
9
lubricant
or
equiva-
lent
.

4
.
Using
appropriate
press
tools,
draw
new
bushing
into
trailing
arm
until
previously
measured
protrusion
is
achieved
.

5
.
If
front
bracket
bushing
was
replaced,
alignfront
brack-
et
before
tightening
bolt
.
See
Fig
.
21
.

A

B=8mm
measured
upfrom
cast-
ing
mark
on
trailing
arm
.
0013237

Fig
.
21
.
When
installing
trailing
arm
front
bracketuising
8mm
bar
stock
.

6
.
Installation
is
reverse
of
removal
.

"
Have
car
professionally
aligned
when
job
is
complete
.

Tightening
Torques

"
Trailing
arm
tofront
bracket
.......
110
Nm
(81
ft-Ib)

"Trailing
arm
bracket
to
body
......
.
.
77
Nm
(57
ft-Ib)

REAR
SUSPENSION
ARMS

330-
1
2



REAR
SUSPENSION

Upper
control
arm,

removing
and
installing

1.
Raise
rear
end
of
car
and
remove
wheel
.

WARNING
-

Make
sure
that
the
car
is
firmly
supportedon
jack

stands
designed
for
the
purpose
.
Place
the
jack

stands
beneatha
structural
chassis
point
.
Do
not

place
jack
stands
under
suspension
parts
.

2
.
Remove
drive
axle
as
described
earlier
.

3
.
Remove
stabilizer
bar
link
fromupper
control
arm
.

4
.
Support
trailing
arm
from
below
with
a
transmission

jackorequivalent
.

WARNING
-

It
is
recommended
that
a
retaining
chain
be
in-

stalled
between
the
bottom
coil
of
the
coil
spring

and
the
upper
control
arm
to
retain
thespring
in

case
of
accidental
release
.
Personal
injury
can
re-

sult
if
the
compressed
coil
spring
ís
not
released
slowly
and
carefully
.

5
.
Remove
lower
shock
absorber
bolt
.
Refer
to
Fig
.
18
.

Slowly
lower
trailing
arm
until
coil
spring
is
fully
re-

leased
.
Remove
restraining
chain
and
remove
spring
.

7
.
Installation
is
reverse
of
removal
.

"
Always
use
new
self-locking
nuts
.

"
Have
car
professionally
aligned
when
job
is
complete
.

"
Insta¡¡
drive
axle
as
described
earlier
.

Tightening
Torques

"
Drive
axleto
final
drive
flange

M8
Torx
bolt
..........
..
.
..
....
64
Nm
(47
ft-Ib)

M10
Torx
bolt
.........
..
..
.
...
100
Nm
(74
ft-Ib)

"
Shock
absorber
to
trailing
arm
..
..
..
77
Nm
(57
ft-Ib)

"
Upper
control
arm

to
final
drive
carrier
(M12
bolt)
...
..
.
77
Nm
(57
ft-Ib)

"
Upper
control
arm

to
trailing
arm
(M12
bolt)
.........



110
Nm
(81
ft-Ib)

Lower
control
arm,

1
.
Raise
rear
end
of
car
and
support
it
securely
on
jack-

stands
.
Remove
rear
wheel
.

2
.
Remove
both
lower
control
arm
mounting
bolts
.

FINAL
DRIVE
CARRIER

3
.
Use
a
soft
hammer
to
tap
control
arm
out
of
its
mount-

ing
points
.

4
.
Installation
is
reverse
of
removal
.

NOTE-

Use
a
new
bolt
and
washer
assembly
at
the
final
drive

carrier
mountíng
point
forthe
control
arm
.

Tightening
Torque

"
Lower
control
arm

to
final
drive
carrier
(M12
bolt)
......
77
Nm
(57
ft-Ib)

"
Lower
control
arm

to
trailing
arm
(M12
bolt)
....
..
.
..
110
Nm
(81
ft-Ib)

FINAL
DRIVE
CARRIER

Final
drive
carrier,

removing
and
installing

1
.
Raise
rear
end
of
car
and
support
it
securely
on
jack

stands
.
Remove
rear
wheels
.

2
.
Remove
driveshaft
.
See
260
Driveshaft
.

3
.
Remove
both
drive
axles
as
described
earlier
.

6
.
Remove
both
upper
control
arm
mounting
bolts
.
Re-

move
control
arm
.



4
.
Disconnect
stabilizer
bar
from
upper
control
arms
.
Re-

move
stabilizer
bar
mounts
.

5
.
Disconnect
speedometer
harness
connector
on
final

drive
(where
applicable)
.

6
.
Remove
rear
section
of
exhaust
system
.
See
180
Ex-

haust
System
.

NOTE-

It
may
be
easier
to
remove
complete
exhaust
asonepiece
.
See
180
Exhaust
System
.

7
.
Remove
upper
and
lower
control
arms
as
described

earlier
.

8
.
Support
final
drive
carrierwith
transmissíon
jack
.
Re-

move
mounting
bolts
and
nuts
at
final
drive
carrier

bushing
mounts
.
See
Fig
.
22
.

9
.
Slowly
lower
final
drive
and
final
drive
carrier,
detaching

removing
and
installing



wire
harness
and
connectors
as
necessary
.

10
.
Finaldrive
may
now
be
unbolted
from
final
drive
carrier
.

GENERAL
......
.
.
.
.
.
.
.
.....
.
.
.
.
.
.
.
.
.
.
331-1



Final
Drive
Oil
Seals



.
.
...
.
.
.
.......
.
.
.
.
.
331-1

Finaldrive
flange
oil
sea¡,
replacing
....
.
.
.
..
331-2

FINAL
DRIVE
SERVICE
.
.....
.
.
.
.
.
.
.
.
.
.
331-1



Finaldrive
inputshaft
oil
seal,
replacing
.
.
.
.
.
331-3

Final
drive
oí¡,
draining
and
filling
.
.
.
.
.
.
.
.
.
.
331-1



Finaldrive
unit,
removíng
and
installing
.
.
.
.
.
.
331-3

GENERAL

This
repa¡r
group
covers
repair
operations
that
do
not
re-

quire
complicated
disassembly
of
the
final
drive
.
Internal
re-

pairs
and
final
drive
disassembly
are
not
covered
in
this

manual
.

FINAL
DRIVE
SERVICE

Al¡
final
drive
work
requires
some
method
of
raising
thecar

and
supporting
it
securely
while
the
work
is
performed
.
Jack

stands
and
a
floor
jack
can
easily
be
used,
but
use
extreme

caution
when
working
beneath
the
car
.
See010
Fundamen-

tais
for
the
Do-It-Yourself
Owner
.

NOTE-

Removal
of
final
drive
carrier
is
covered
in
330
Rear
Suspension
.

Final
drive
oil,
draining
and
filling

1
.
Drive
car
to
warm
final
drive
fluid
.

2
.
Raise
car
and
support
safely
.

WARNING
-

Make
sure
that
thecar
is
firmly
supported
on
jack
standsdesigned
for
the
purpose
.
Place
the
jack
standsbeneatha
structural
chassis
point
.
Do
not
place
jack
stands
under
suspension
parts
.

5
.
Fill
final
drive
with
appropriate
type
and
quantity
of
lu-

bricant
.
Insta¡¡
and
tighten
fill
plug
.

331
Final
Drive

0

Fig
.
1
.



Final
drivedrain
plug
(A)
and
fill
plug
(B)
.

D

NOTE-

The
final
drive
fluid
level
is
correct
when
the
fluid
begins
to
spill
from
the
fill
plug
.

Final
Drive
Oil
Seals

FINAL
DRIVE



331-1

0013113

Final
DriveDrain
and
Fill

"
Oil
specifications

w/o
limited
slip



.
.......
BMW
SAF-XO
Synthetic
Oil

with
limited
slip
.
......
BMW
SAF-XIS
Synthetic
Oil

"
Final
drive
oil
capacity

4-cylinder
.
.
.
...
................
1
.1
liters
(1
.2
qt)

6-cylinder
.
.
.
...
................
1
.7liters(1.8
qt)

3
.
Place
a
drain
pail
below
final
drive
andremove
drain

and
fill
plugfrom
final
drive
.
See
Fig
.
1
.



Low
oil
level
caused
by
faulty
oil
seals
may
be
the
cause
of

noisy
final
drive
operation
or
limited-slip
chatter
.
The
drive

NOTE-



flange
(side)
and
inputshaft
(front)
oil
seals
can
be
replaced

"
Use
a14
mm
alíen
bit
socket
to
remove
the
drain
plug
.



while
the
final
drive
is
installed
.

Alternatively,
cut
approximately
30
mm
(1
.2
in)
from

an
alíen
key
and
usea
box
end
wrenchon
the
key



NOTE-
stub
.
Do
not
mistake
leaking
CV
joints
for
flangeseal
leaks
.

4
.
Install
and
tighten
drain
plug
.



It
may
be
helpful
to
degrease
the
final
drive
to
pinpoint
the
source
of
the
leak
prior
to
replacing
seals
.

FINAL
DRIVE
SERVICE

331-2



FINAL
DRIVE

Make
sure
that
the
car
is
firm1y
supportedon
Tjack

.
.-



"
:
.-



:
.
n



-

2
.
Detach
drive
axle(s)
from
final
drive
.
See330
Rear

Suspension
.

CA
UTION-

Suspend
the
detached
drive
axlefrom
the
car
body
with
a
stiff
wire
hook
to
prevent
damage
to
the
outer
CV
joint
.

Fig
.
3
.



Drive
flange
snap
ring
(arrow)
to
be
removed
from
final
drive

3
.
Pry
drive
flange
from
final
drive
.
See
Fig
.
2
.



housing
.

Fig
.
2
.



Drive
flange
being
pried
off
.
For
leverage,
use
a
wooden
dowel
as
shown
.

4
.
Remove
wire(snap)
ring
from
final
drive
opening
.
See

Fig
.
3
.

NOTE-

Inspect
flangeat
the
point
where
the
oil
seal
rides
on
the
shaft
.
Replace
the
flange
assembly
if
there
is
agrooveworn
in
the
shaft

FINAL
DRIVE
SERVICE

9
.
Attach
drive
axle
and
tighten
bolts
.

10
.
Top
off
final
drive
with
ofl
.

B315

5
.
Pry
old
oil
sea¡
from
its
recess
using
a
hooked
seal
re-

moval
tool,
or
a
large
screwdriver
.
Use
pan
to
catch

draining
fluid
.

CA
UTION-

Be
careful
not
to
mar
the
final
drive
housing
when
removing
the
sea¡
.

6
.
Dip
new
seal
in
final
drive
lubricant
and
drive
seal
into

place
untilfully
seated
.

7
.
Insta¡¡
new
snap
ringin
groove
of
final
drive
housing
.

Make
sureboth
ends
ofring
are
fully
seated
in
groove
.

8
.
Insta¡¡
drive
flangeby
pressing
it
in
by
hand
until
snap
ring
engages
.
It
may
benecessary
to
turn
drive
flange

slightly
while
pushing
.

Tightening
Torque

"
Drive
axle
to
final
drive
flange

M8
Torx
bolt
..
..................
64
Nm
(47
ft-Ib)

M10
Torx
bolt
.
.................
100
Nm
(74
ft-Ib)

Final
driveinputshaft
oil
sea¡,
replacing

1
.
Raise
car
and
support
safely
.

2
.
Drain
final
drive
oil
as
described
earlier
.

3
.
Remove
driveshaft
from
final
drive
inputshaft
flange
.

See
260
Driveshaft
.

4
.
Make
matching
marks
on
input
shaft
and
inputshaft
collar
nut
.
See
Fig
.
4
.

Fig
.
4
.



Make
matching
marks
on
input
shaft
collar
nut
and
flange
.

5
.
Pry
lockplate
from
nut
.
Hold
input
flange
andremove

collar
nut
.
If
necessary,
usea
pullerto
remove
input

flange
.

6
.
Remove
final
drive
front
dust
cover
.

8
.
Install
new
final
drivefront
dust
cover
.

9
.
Lightly
lubricate
inputshaft
and
press
input
flange
back

on
.
Insta¡¡
collar
nut
and
slowly
tighten
until
matching

marks
line
up,
coming
as
close
aspossible
to
specified

torque
.

Tightening
Torques

"
Final
driveinputshaft
flange
to
pinion

with
4
bolt
side
covers
.



.........
175
Nm
(129
ft-Ib)

(or
until
match
marks
line
up)

"
Finaldriveinputshaft
flange
to
pinion
with
6
bolt
side
covers
...........
185
Nm
(137
ft-Ib)

(or
until
match
marks
line
up)

CA
UTION-

If
the
input
flange
nuttorque
is
exceeded,
or
the
nut
is
tightened
past
the
marks,
the
crushable
col-
lar
sleeve
behind
theflange
will
need
to
be
re-
placed
.
This
operation
requires
disassembly
of
the
final
drive
unit
.

10
.
Install
a
new
lockplate
and
refill
final
drive
with
lubri-

cant
.

11
.
Remaining
assembly
is
reverse
of
disassembly
.

Tightening
Torques

"
Driveshaftto
final
dríve
flange
...
See260
Driveshaft

"
Flex-disc
to
driveshaft
or
transmission
flange
...........
See260
Driveshaft

"
Finaldrivedrain
and
fill
plugs
...
.
..
.
70
Nm
(52
ft-Ib)

Final
drive
unit,

removing
and
installing

FINAL
DRIVE



331-
3

1
.
Raise
rear
end
of
car
and
support
it
securely
on
jack
stands
.
Remove
rear
wheels
.

2
.
Remove
driveshaft
from
final
drive
input
flange
.
See
7
.
Pry
faulty
sea¡
from
its
recess
using
a
hooked
sea¡
re-



260
Driveshaft
.
moval
toolor
a
large
screwdriver
.
Dip
new
sea¡
in
final

drive
lubricant
and
drive
it
into
position
.



3
.
Remove
both
drive
axles
from
final
drive
unit
.
Suspend

axle
using
stiff
wire
.
See
330
Rear
Suspension
.

CAUTION
-

ee
careful
not
to
mar
the
housing
when
removing



4
.
Disconnect
stabilizer
bar
from
upper
control
arms
.
Re-

the
seas
.



move
left
and
rightstabilizer
bar
mounts
.

5
.
Disconnect
speedometer
harness
connector
on
final

drive
(where
applicable)
.

6
.
Support
final
drive
with
transmission
jack
.
Remove

mounting
bolts
atfront
and
rear
.
See
Fig
.
5
.

7
.
Slowly
lower
final
drive
unit
and
remove
towards
rear
.

FINAL
DRIVE
SERVICE

Brake
rotor,
removing
and
installing
.
.
.
.
.
.
.
.
340-7

MASTER
CYLINDER
............
.
.
.
.
.
.
.340-7

Master
cylinder,
removing
and
installing
.
...
.
340-7

GENERAL



TROUBLESHOOTING

WARNING
-

"
Although
semi-metallic
and
metallic
Brake
friction
materials
in
Brake
pads
or
shoes
no
longer
con-
tain
asbestos,
they
produce
dangerous
dust
.
"
Brake
fluid
is
poisonous,
highly
corrosive
and
dangerous
to
the
environment
Wear
safety
glasses
and
rubber
gloves
when
working
with
Brake
fluid
.
Do
not
siphonBrake
fluid
with
your
mouth
.
Immediately
clean
away
any
fluid
spilled
on
painted
surfaces
and
wash
with
water,
asBrake
fluid
will
remove
paint
.

"
Always
use
new
Brake
fluid
froma
fresh,
un-
opened
container
.
Brake
fluid
will
absorb
mois-
ture
from
the
air
.
This
canlead
to
corrosion
problems
in
the
brakingsystem,
and
will
also
low-
er
the
Brake
fluid's
boiling
point
.
Dispose
of
Brake
fluid
properly
.

"
Do
notreuse
self-locking
nuts,bolts
or
fasteners
.
They
are
designed
to
be
used
only
once
and
may
failif
reused
.
Always
replace
them
with
new
self-
locking
fasteners
.

BMW
E36
models
areequipped
with
vacuum
power-assist-

ed
four-wheel
disc
brakes
with
an
integral
Antilock
Brake
Sys-

tem
(ABS)
.
Single-pistoncalipers
act
on
solid
or
vented
front
rotors
and
solid
rear
rotors
.
A
brake
pad
wear
sensor
for
each

axle
indicates
when
brake
padsneed
replacement
.
The
dual

drum-type
parking
brakesystem
is
integrated
with
the
rear
brake
rotors
.

NOTE-

M3
models
havevented
directional
Brake
rotors
on
the
rearaxle
as
well
ason
the
front
.

340
Brakes

BRAKES
340-1

GENERAL
.
.
.
.
.
.
.........
.
.
.
..........
340-1



BRAKE
BOOSTER
.........
.
.
.
.
.
...
.
.
.
.
340-8

TROUBLESHOOTING
.......
.
......
.
...
340-1



Brake
booster,
removing
and
installing
....
.
.
340-8

PARKING
BRAKE
.
.....
.
...
.
.
.
.....
.
.
.
340-10
BLEEDING
BRAKES
.
.
.
.
.
.
.
.
..........
340-3



Parking
brake,adjusting
.
.
.
.
.
.
.
.
.
.
.....
.
340-10
Pressure
bleeding
brakes



Parking
brake
shoes,
removing
and
installing
.
340-11(except
cars
with
AST)
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.340-3



Parking
Brake
cable,
replacing
.
.
.
.
.
.
.
.
.
.
.
.
340-11

BRAKE
PADS,
CALIPERS,



ANTILOCK
BRAKE
SYSTEM
(ABS)
.
.
.
.340-11
AND
ROTORS
..........
.
.......
.
.
.
.
.
.
.
340-3



ABS
System
Inspection
.
...
.
.......
.
.
.
..
340-12
Brake
pads,
replacing
............
.
.
.
.
.
.
.
340-4
ABS
wheel
speed
sensors,
replacing
.
.
.
.
..
340-12
Brake
caliper,
removing
and
installing
.
..
..
.
340-6

TABLES

a
.
Brake
System
Troubleshooting
.....
...
.
.
.....
.340-2
b
.
Brake
Rotor
Reconditioning
Specifications
.
.....
.340-7

Brakeperformance
is
mainly
affected
by
three
things
:
the
leve¡
and
condition
of
the
brake
fluid,
the
system's
abilíty
to
create
and
maintain
hydraulic
pressure,
and
the
condition
of
the
friction
components
.

Air
in
the
Brake
fluid
will
make
the
Brake
pedal
feel
spongy

during
braking
or
will
increase
the
Brake
pedalforce
required

to
stop
.
Fluid
contaminated
by
moisture
or
dirt
can
corrode
the

system
.
Inspect
the
Brake
fluid
inside
the
reservoir
.
Ifit
is
dirty
or
murky,
or
is
over
a
year
old,
the
fluid
should
be
replaced
.

Visually
check
the
hydraulic
system
startingat
the
master

cylinder
.
To
check
the
function
of
the
master
cylinder
hold
the

brake
pedal
down
hard
with
the
engine
running
.
The
pedal

should
feelsolid
and
stay
solid
.
If
the
pedal
slowly
falls
to
the

floor,
either
the
master
cylinder
is
leaking
internally,
or
fluid
is
leaking
externally
.
If
no
leaks
canbe
found,
the
master
cylin-
der
is
faulty
and
should
be
replaced
.
Check
all
Brake
fluid
lines

and
couplings
for
leaks,
kinks,
chafing
and
corrosion
.

Check
the
Brake
booster
by
pumping
the
Brake
pedal
ap-

proximately
10
times
with
the
engine
off
.
Hold
the
pedal
down
and
start
the
engine
.
The
pedal
should
fa¡¡
slightly
.
If
not,
check

for
any
visiblefaults
before
suspecting
a
faulty
brake
booster
.

Check
for
strong
vacuum
at
the
vacuum
hose
fitting
at
the

booster,
and
check
the
non-retum
valve
for
one-way
flow
.

Worn
or
contaminated
brake
pads
will
cause
poor
braking

performance
.
Oil-contaminated
or
glazed
pads
will
cause

stopping
distances
to
increase
.
Inspect
the
rotors
for
glazing,

discoloration
and
scoring
.
Steering
wheel
vibration
while

braking
at
speed
is
often
caused
by
warped
rotors,
but
can
also
be
caused
byworn
suspension
components
.

TROUBLESHOOTING