1993 BMW 325i Rela y

6
.
Before
installation,
make
sure
dust
guard
is
on
drive-



2
.
Pack
cavity
behind
centering
guide
with
heavy
grease
shaft,
and
then
press
center
mount
onto
driveshaft



until
grease
is
flush
with
bottom
edge
of
guide
.
flush
with
dust
guard
.

3
.
Insert
14
mm
(approximately
%z
in
.)
diameter
mandrel
7
.
Place
clamping
sleeve,
washer,
and
rubber
bushing
on



or
metal
rod
finto
guide
.
Strike
guide
with
hammer
to
front
driveshaft
section
.
Lubricate
splines
with
molyb-



force
centering
guide
out
.
denum
disulfide
grease
(Molykote
0
Longterm
2
or
equivalent)
and
then
reassemble
driveshaft
.



NOTE-

The
mandrel
should
fit
snugly
in
thecentering
guideso
NOTE-



that
the
greasecannot
escapearound
the
sides
of
the

Do
not
retighten
clamping
sleeve
until
driveshaft
is
in-



mandrel
.

stalled
.

4
.
Remove
old
greasefrom
driveshaft,
lubricate
new
cen

8
.
Insta¡¡
dríveshaft
.
See
Driveshaft,
installing
.



tering



guide



with



molybdenum



disulfide



grease
(Molykote
®
Longterm2
or
equivalent)
and
drive
it
finto

9
.
Tighten
clamping
sleeve
.



driveshaft
.

NOTE-
Tightening
Torque



The
sealing
lip
of
the
guide
should
face
outward
and
it
"
Clamping
sleeve
.....
...
.
..
......
10
Nm
(7
.5
ft-Ib)



shouldbe
driven
into
the
driveshaft
to
a
specified
depth
.
See
Fig
.
11
.

Front
centering
guide,
replacing

The
front
centering
guide
centers
the
driveshaft
in
relation
to
the
transmission
.
The
guide
is
press-fit
finto
a
cavity
in
the

frontof
the
driveshaft
and
slides
onto
the
transmission
output

shaft
.

No
specifications
are
given
for
wear
of
the
guide,
but
gener-

ally
theguide
should
fit
snugly
on
thetransmissionoutput

shaft
.

NOTE-

Some
driveshafts
have
a
dust
cap
installed
on
the
end

of
the
driveshaft,
over
thecentering
guide
.
The
dust

cap
may
become
bent
or
distorted
when
the
driveshaft
is
removed
or
installed
.
Damage
to
the
dust
capshould
not
affect
the
centering
guide
and
should
not
be
mistak-
en
for
guide
wear
.

1
.
Remove
driveshaft
.
See
Driveshaft,
removing
.

®RIVESHAFT
260-
7

~)I~
4
.5
mm

(
.177")
B313

Fig
.
11
.
When
installing
new
driveshaft
centering
guide,
drive
guide
in
until
its
protrusion
depth
is
as
shown
.

5
.
Install
driveshaft
.
See
Driveshaft,
installing
.

DRIVESHAFT
SERVICE

300-6



SUSPENSION,
STEERING
AND
BRAKES-GENERAL

BATTE
RY

KL
30

ECM
MAIN
C~
RELAY



KL
15

DSC
SWITCH

LF1
;1~lZZ~



nSLn

l'
z
sJ



WHEEL

RF

c_
.

LR

r_
.
>
RR

ELECTRONIC
BRAKE
LIGHT
SWITCH

SPEED

SENSORS

Fig
.
7
.



Schematic
of
AII
Season
Traction
(AST)
system
.

INTEGRATED
SYSTEMS

EDC

POWER
SUPPLY



SOLENOID
RELAY
GROUND
CONTROL

POWER
SUPPLY
I'
1
ABS
PUMP

GROUND
CONTROLÍ
F



f
iJ
RELAY

INLET
(4X)
wxxuw
OUTLET
(4X)



-=-=--



AST
AST
INTAKE
IHYDRAULIC
-
=-

SWITCHING
=---

!
99001
!J

WHEEL
SPEED
X
4

DME
II

000001
-
f



1
UNIT

AGS

IKE
&
DMEI
PARK
BREVE

771
SWITCH

M
ALTERNATOR



AUXILIARY
THROTTLE

r
`



INDICATOR



POSITION
MOTOR
(ADS)

ABSPUMP



DIAGNOSIS

RELAY



lu~~~b

0013027

310-
4



FRONT
SUSPENSION

Strut
assembly,

disassembling
and
assembling
-
Be
sure
upper
spring
pad
is
correctly
installed
to
upper

NOTE-



spring
plate
and
spring
end
is
correctly
seated
in
up-
Springs
andlor
struts
should
always
be
replaced
in



per
and
lower
spring
plates
.

pairs
.



"
Use
a
new
self-locking
top
(center)
nut
.
Tighten
nut
fui-
¡y
before
releasing
spring
compressor
.

Replacing
the
upper
strut
mount,
spring
and
strut
requires



"
Have
car
professionally
aligned
when
job
is
complete
.

that
the
strut
first
bedisassembled
.
For
a
guide
to
the
parts

during
strut
replacement,
see
Fig
.
5
.
Tightening
Torques

WARNING-



"
Upper
strut
mount
to
strut
shaft
(seif-locking
nut)

Do
not,attempt
to
disassemble
thestruts
without
a



shaft
with
external
hexagon
......
..
65
Nm
(48
ft-1b)

springcompressordesignedspecificallyforthisjob
.



shaft
with
interna¡
hexagon
.......
..
44
Nm
(32
ft-Ib)

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

1
.
Remove
strut
assembly
as
described
earlier
.
Place
in

secure
support
.
Ride
Height

2
.
Using
spring
compressor,
compress
spring
until
spring

force
onupper
mount
is
relieved
.



Ride
height
is
measured
from
the
lower
edge
of
the
wheel

arch
to
the
bottom
edge
of
the
wheel
rim
.
See
Fig
.
6
.

WARNING
-

Make
sure
the
spring
compressor
grabs
the
spring



lf
the
ride
height
is
outside
the
specification
listed,
new

fully
and
securely
before
compressing
it
.



springs
should
be
installed
.
Be
sure
to
have
theold
spring

code
number
on
hand
when
ordering
new
spring
.

3
.
Pry
protective
cover
off
top
ofstrut
assembly,
then
re-

move
top
(center)
nut
andwasher
whileholding
strut



NOTE-

shaftstationary



The
spring
part
number
is
stamped
near
the
end
of
the
spring
cofls
.

4
.
Remove
upper
strut
mount
and
related
components
.

5
.
Release
spring
compressor
carefully
and
evenly,
allow-

ing
spring
lo
expand
slowly

1
Self-locking
hex
nut



Absorber/

Flat
washer



bump
stop

Nut

Cover

Upper



~
strut
mount



Pin
Z



Piston
bellows

Flat
washer



r
i

t1



~



1
Upper
spring
plate

1



1



1

Upper
spring
pad



I



1
-



,



Lower
spring
pad

-
Í



0012136

Fig
.
5
.



Front
spring,
spring
plate
and
related
parts
.

SHOCKABSORBERS
AND
SPRINGS

6
.
Assembly
is
reverse
of
disassembly,
noting
the
follow-

ing
:

Table
a
lists
front
suspension
ride
height
specifications
.

These
specifications
apply
to
a
car
in
a
normally
loaded
posi-

tion
.
When
checking
ride
height
or
installing
suspension
com-

ponents
that
require
thecar
to
be
"normally
loaded,"load
the

car
as
follows
:

320-
4



STEERING
AND
WHEEL
ALIGNMENT

7
.
Remove
fluidline
banjo
bolt
from
steering
gear
.
See



9
.
Remove
steering
gearmounting
bolts
.
See
Fig
.
7
.
Re
Fig
.
5
.



move
steering
gear
from
subframe
crossmember
by

pulling
it
forward
.

CAUTION-

Plug
the
openings
in
the
pump
and
hoseends
to
prevent
dirt
from
entering
the
hydraulic
system
.

NOTE-
It
may
be
necessary
to
remove
other
components
to
gain
access
to
the
steering
gear
.

"
Make
sure
al¡
thread
bores,
bolts,
nuts,
splines
and
mating
surfaces
are
clean
.
Use
new
self-locking
nuts
wherever
applicable
.

"
Use
marks
made
during
removal
to
reassemble
steer-
ing
column
universal
jointto
steering
stub
shaft
.
Make
sure
wheels
are
straight
ahead
.

"
Use
a
new
sealing
washer
on
banjo
fitting
.
Do
not
over-

Fig
.
5
.



Fluid
hoses
and
banjo
bolts
at
steering
gear
(arrows)
.



torque
banjo
bolt
.
"
Install
airbag
to
the
steering
wheel
as
described
in
721
Airbag
System
(SRS)
.
8
.
Remove
lower
steeringshaft
universal
joint
pinch
bolt,



"
Fill
and
bleed
power
steering
system
as
described
ear-
then
pull
universal
joint
half
way
off
steering
gear
shaft
.



lier
.
Mark
relationship
between
shaft
and
universal
joint,



"
Have
thecar
professionally
aligned
.
then
remove
universal
joint
from
steering
gear
.
See
Fig
.
6
.

0013231
Fig
.
6
.



Steering
column
universal
joint
pinch
bolt
(arrow)
.
Mark
U-
joint
to
shaft
before
disconnecting
.
With
wheels
in
straight
ahead
position,
mark
on
steering
gear
(A)
should
align
with
split
seam
in
universal
joint
(B)
.

STEERING
GEAR

Fig
.
7
.



Steering
gear
mounting
bolts
(arrows)
.

Outer
tie
rod
end,
replacing

10
.
Installation
is
reverse
of
removal,
noting
the
following
:

Tightening
Torques

"
Outer
tie
rod
end
to
steering
arm
.
.
..
45
Nm
(33
ft-Ib)

"
Steering
column
universal
joint
to
steering
gear
shaft
(self-locking
nut)
....
..
..
19
Nm
(14
ft-Ib)

"
Steering
gear
to
subframe
crossmember
M10
bolt
..............
.
...
.....
42
Nm
(32
ft-Ib)

"
Steering
fluíd
lines
M10
banjo
bolt
..
..
..
........
.....
12
Nm
(9
ft-Ib)
M14
banjo
bolt
..
..
..
...
..
...
....
35
Nm
(26
ft-lb)
M16
banjo
bolt
..
.......
..
..
.....
40
Nm
(30
ft-Ib)

1
.
Raise
car,
remove
outer
tie
rod
ball
joint
nut,
and
press
out
outer
tie
rod
end
ball
joint
as
described
above
.

2
.
Make
a
reference
measurement
of
outer
tie
rod
end
to
tie
rod
.
See
Fig
.
8
.
Record
measurement
.

NOTE-
Accurate
measuring
of
the
tie
rod
end
in
reference
to
the
tie
rod
will
help
approximate
correct
wheel
align-
mentwhen
new
parts
are
installed
.

Fig
.
8
.



Measuring
tie
rod
end
position
(for
reference
only)
.

3
.
Loosen
outer
tie
rod
end
lock
nut
.
See
Fig
.
9
.

Lock
nut

4
.
Unscrew
tie
rod
end
from
steering
gear
.

0012143

"
Make
sure
all
threaded
parts
are
clean
.
Replace
self-

locking
nuts
and
inner
tie
rod
lockplate
.
"
Install
outer
tie
rod
end
to
new
tie
rod
using
reference

measurement
recorded
earlier
.

Fig
.
9
.



Outer
tie
rod
end
lock
nut
(arrow)
.



"
Have
car
professionally
aligned
.

5
.
Installation
is
reverse
of
removal
.
Make
sure
all
thread-

ed
parts
are
clean
.
Have
thecar
professionally
aligned
.

Tightening
Torques

"
Outer
tie
rod
end
losteering
arm
....
45
Nm
(33
ft-Ib)

"
Outer
tie
rod
end
lock
nut
..
.......
.
35
Nm
(26
ft-Ib)

Tie
rod,
replacing

1
.
Raise
car,
remove
outer
tie
rod
end
ball
jointnut,
and

press
out
outer
tie
rod
end
ball
joint
as
described

above
.

2
.
Make
a
reference
measurement
of
outer
tie
rod
end
to

tie
rod
.
See
Fig
.
8
.
Record
measurement

NOTE-
Accurate
measuring
of
the
tía
rod
end
in
reference
to
the
tie
rod
will
help
to
approximate
wheel
alignment

when
new
parts
are
installed
.

STEERING
AND
WHEEL
ALIGNMENT



320-
5

3
.
Loosen
rack
boot
bellows
clamp
and
slide
bellows

back
.
Inspect
boot
for
any
signof
damage
.
Replace
if

necessary
.

4
.
Unlock
inner
tie
rod
end
lockplate
using
pliers
.

5
.
Using
special
tool,
unscrew
inner
tie
rod
end
from

steeringrack
.
See
Fig
.
10
.

WHEEL
ALIGNMENT

Caster
and
Camber

Fig
.
10
.
Special
tool
(arrow)
installed
on
inner
tie
rod
end
.

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

Tightening
Torques

"
Outer
tie
rod
end
to
steering
arm
..
.
.
45
Nm
(33
ft-Ib)

"
Outer
tie
rod
end
lock
nut
..........
35
Nm
(26
ft-Ib)

"
Inner
tie
rod
to
steering
gear
.......
71
Nm
(52
ft-Ib)

Proper
handling,
stability,
tire
wear,
and
driving
ease
de-

pendupon
the
correct
alignment
of
al¡
four
wheels
.
The
front

axle
is
aligned
in
relation
to
the
rear
axie,
then
the
front
wheels

are
aligned
in
relation
to
one
another
.
This
is
known
as
a
four-

wheel
or
thrust-axis
alignment
.

The
BMW
E36
uses
a
sophisticated
multi-link
suspension

at
the
front
and
rear
of
the
car
.
Proper
alignment
requires

computerized
alignment
equipment
.

Front
and
rear
caster
and
Camber
are
both
fixed
by
the
de-

sign
of
the
car
.
Any
deviations
are
usually
the
result
of
worn
or

damaged
suspension
or
body
parts
.

WHEEL
ALIGNMENT

Rear
shock
absorber,

removing
and
installing

1.
Raisecar
and
remove
rear
wheels
.

WARNING
-

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

2
.
Remove
rear
speakers
.
See
650
Radio
.

3
.
Pryoutluggage
compartment
liner
retaining
clips
and
peel
back
liner
to
gain
access
to
upper
shock
absorber
mounting
nuts
.
See
Fig
.
3
.

Fig
.
3
.



Rear
shock
upper
mounting
nuts
(arrows)
in
luggage
com-
partment
.
Liner
hasbeen
peeled
back
.

NOTE-

On
convertible
models,
the
uppershock
absorber
mount
is
in
the
convertible
top
compartment
behind
the
rear
seat
.

4
.
Support
trailing
arm
from
below
using
a
transmission

jack
orequivalent
.
See
Fig
.
4
.
Remove
shock
absorber

uppermounting
nuts
.

CAUTION-

The
shock
absorber
prevenís
the
drive
axle
and
trailing
arm
from
drooping
too
far,
so
always
sup-port
the
trailing
arm
before
removing
the
shock
.
Damage
to
drive
axle
CV
joints
can
result
.

0013224

5
.
While
supporting
shock
absorber,
carefully
remove

lower
mounting
bolt
.
Lower
shock
absorber
out
of

wheel
well
.

Fig
.
4
.



Support
rear
trailing
arm
from
below
before
removing
upper
or
lower
(arrow)
shock
mounting
.

6
.
Transfer
shocktopmounting
plate,
dust
coverand
relat-

ed
components
to
new
shock
absorber
.
See
Fig
.
5
.

'
Protective
cap

Upper
mounting
nut
14
Nm
(10
ft-Ib)

1120



Shock
upper
mount
,~,--~to
body
nuts
(renew)



I
-



'



~



24
Nm
(17
ft-Ib)



I
1
-Gasket
(renew)



I
1
pper
mount



I



Rear
I
shock
I
absorber
I
I
---spacer

REAR
SUSPENSION



330-
3

Rubber
bumper

Dust
shield

Fig
.
5
.



Rear
shock
absorber
assembly
.

Lower
mounting
bolt
77
Nm
I



(57
ft-Ib)

i

I

I
1
I

0013220
0013236

SHOCKABSORBERS
AND
SPRINGS

TheE36
convertible
is
an
all-season
vehicle
with
a
high
lev-
e¡offunctionality,
excellent
interior
comfort,
and
acoustic
re-

finement
.
Interior
materials
and
colors,
the
soft
top
and
the

light-alloy
wheelshave
been
carefully
matched
.

Various
versions
of
manual
and
automatic
soft
tops
have
been
used,
with
the
fully
automatic
convertible
roof
being
in-

stalled
beginning
in
the
1997
model
year
.

A
hard-top
in
body
color
with
heated
rear
window
is
avail-

ableas
an
option
for
the
cold
season
.

BODY-GENERAL
400-
3

Coupe
Models



The
convertible
body
structure
includes
many
passive
safe-

ty
refinements
over
its
fixed-top
counterparts
.
Some
of
the
en-

TheE36
coupe
is
similar
to
the4-door
sedan,
but
has
a



hancements
include
:

more
stretched
and
sleeker
appearance
.
Thus,
with
the
same

wheelbase
and
identicallength,
it
looks
different
but
still
famil-



"
More
rígíd
underbody
.

iar
.



"
Transverse
seat
members
.

"
Reinforced
windshield
frame
with
bonded
windshield,

The
2-door
variant
differs
from
the
4-door
sedan
by
a
3
.12



and
tubular
door
reinforcements
.

inch
(8
cm)
longer
front
end,
a
flatter
hood
line
with
air
slits,



"
Rollover
protection
system,
which
is
tripped
into
position

and
a
roof
almost
1
.2
inches
(3
cm)
shorter
.
Additional
differ-



in
a
fraction
of
second
.
This
is
available
as
optional

ences
include
wider
doors
with
frameless
Windows,
glass-



equipment
(standard
on
the
1998
328iC)
and
may
be
fit-

covered
door-posts
(B-pillars)
and
a
shorter
and
lower
lug-



ted
to
earlier
convertible
models
.
With
this
feature,
two

gage
compartment
lid
.



bars
fully
independent
of
each
other
come
up
behind

each
rear-seat
backrest
when
the
vehicle
is
in
danger
of

Convertible
Models



turning
over
.

A
convertible
body
normally
flexes
and
vibrates,
transfer-

ring
oscillations
to
the
luggage
compartment
.
In
the
E36
con-

vertible,
BMW
utilizes
a
special
battery
in
the
luggage
compartment,
in
conjunction
with
a
unique
battery
tray,
asa

vibration
dampening
system
to
counteract
thisoscillation
.

CAUTION
-

The
E36
convertible
requires
a
specialbattery
which
is
designed
for
constant
vibration
.

Information
for
the
convertible
top
and
its
related
mecha-

nisms
can
be
found
541
Convertible
Top
.

BODYASSEMBLY

Ambient
temperaturelclock

MÍM
Aa
.Mi}rm
-Mil"
IMua~naa~u~itacar
"
za
.~

Central
Body
Electronics

0013028

Fig
.
4
.



Different
versionsof
Multi-information
Display(MID)
installed
in
E36
cars
.

The
E36
cars
are
equipped
with
a
sophisticated
centralized

body
electric/electronics
plan
.
The
system
is
self-diagnostic

and
incorporates
many
functions
into
a
single
control
module
.

The
consolidation
of
several
systems
into
a
single
control

module
minimizes
power
requirements
and
the
incorporation

of
the
diagnostic
link
results
in
more
efficient
and
accurate

troubleshooting
.

Self-diagnostic
codes
are
accessible
electronically
through

the
data-link
connector
in
the
engine
compartment
.
See610

Electrical
Component
Locations
.

BODY-GENERAL
400-
5

Two
versions
of
central
body
electronics
are
used
depend-

ing
on
model
year
.

1992
and
1993
models
are
equipped
with
a
central
locking

module
(ZVM)
which
incorporates
control
of
the
following
sys-

tems
:

"Interiorlighting
"
Central
locking
with
double
lock
feature

"
Output
relays
for
powerwindows
and
sunroof

"
Electronic
power
protection

E36
cars
since
the
1994
model
year
are
equipped
with
ZKE

IV
.
This
is
an
electronic
comfort
and
convenience
system
that

includes
the
following
additional
features
:

"
One
touch
up/down
power
window
operation

"
Power
window
and
sunroof
closure
from
driver
or
pas-

sengerdoor
lock

"
Vehicle
locking
or
unlocking
from
the
trunk
lock
.

Other
features
of
the
system
are
discussed
in
515
Central

Locking
and
Anti-Theft
.

Electronic
Immobilization
System

Beginning
in
model
year
1994,
all
E36
vehicles
incorporate

adriveaway
protection
system
regardless
of
whether
the
vehi-

cle
is
equipped
with
a
BMW
Alarm
System
or
an
On-Board

computer
.
Two
types
of
factory
systems
were
installed,
de-
pending
on
vehicle
production
date
.

On
the
early
system
(model
year
1994
up
to
January
1995),

the
ignition
and
fuel
injection
functions
are
disabled
whenever

the
vehicle
is
locked
in
the
double
lock
mode
.
This
is
referred

lo
as
EWS
or
EWS
I
.

Beginning
in
January
1995,
the
driveaway
protection
sys-

tem
was
upgraded
to
a
more
sophisticated
system,
called

EWS
II
.
This
system
uses
a
wireless
communication
link
be-

tween
a
transponder
chip
in
the
ignition
keyand
the
ring
an-

tenna
surrounding
the
ignition
switch
.
The
EWS
II
control

module
blocksthe
starting
of
the
vehicle
unlessthe
correct

coded
ignition
key
is
used
.

For
further
information
about
drive
away
protection
sys-

tems,
see
515
Central
Locking
and
Anti-Theft
.

INTERIOR
EQUIPMENT