1997 BMW 318i Final drive

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
.

Fig
.
22
.
Final
drive
carrier
mounts
(arrows)
.

11
.
Installation
is
reverse
of
removal
.

uu1J221

"
Check
and
adjust
parking
brake
as
described
in
340

Brakes
.

"
Alwaysuse
new
self-locking
fasteners
.
"
Have
car
professionally
aligned
when
job
is
complete
.

Tightening
Torques

"
Drive
axle
to
final
drive
flange

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

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

"
Driveshaft
to
final
drive
flange
...
See
260
Driveshaft

"
Final
drive
carrier
to
body
......
...
77
Nm
(57
ft-Ib)

"
Final
drive
to
final
drive
carrier
(M12
bolts)

Front
mount
.................
...
95
Nm
(70
ft-lb)

Rear
mounts
................
...
77
Nm
(57
ft-Ib)

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

"
Upper
or
lower
control
arm

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

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

331-
4



FINAL
DRIVE

FINAL
DRIVE
SERVICE

0013242
0013243

Fig
.
5
.



Final
drive
to
final
drive
carrier
rear
(A)
and
front
mounting
bolts
(B)
.

8
.
Installation
is
reverse
of
removal
.

"
Check
and
adjust
parking
brake
as
described
in
340
Brakes
.

"
Always
use
new
self-locking
fasteners
.

"
Have
car
professionally
aligned
when
job
is
complete
.

Tightening
Torques

"
Drive
axle
to
final
drive
flange

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

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

"
Driveshaft
to
final
drive
flange
...
See
260
Driveshaft

"
Final
drive
carrier
to
body
..
........
77
Nm
(57
ft-Ib)

"
Final
drive
to
final
drive
carrier
(M12
bolts)

Front
mount
.....
...
.
...
........
95
Nm
(70
ft-Ib)

Rear
mounts
.....
.......
.
.
.
..
...
77
Nm
(57
ft-Ib)

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

"
Upper
or
lower
control
arm

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

610-18



ELECTRICAL
COMPONENT
LOCATIONS

Tablea
.
E36
Component
Locations

Component



Model
Year



Location



Refer
to

Transmission
Control
Module



1992-1998



Right
rear
engine
compartment
behíndpanel



Fig
.
7
.

Transmission
Range
Switch
(Gear



1992-1998



Next
to
gear
shift
lever
in
center
console



Fig
.
29
.

Position/Neutra
l
Safety
Switch)

Transmission
Valve
Unít



1992-1993



In
transmission
oil
pan

Transmission
Valve
Unit



1994-1998



On
left
side
of
transmission

Trunk
Lid
Microswitch



1994-1998



In
trunk
lid

Trunk
Lid
Relay



1994-1998



Behind
glove
compartment
(convertible)



Fig
.
8
.
Fig
.
9
.

Trunk
Light
Switch



1992-1998



Left
underside
of
trunk
lid

TrunkLockMotor



1992-1998



Rear
of
luggage
compartment

UnloaderRelay



1992-1998



Inleft
splice
panel
behind
footwell
speaker
grille



Fig
.
5
.

Variable
Camshaft
Control
Module



1994-1996



I
Rear
right
side
of
engine
compartment

(VANOS)

Variable
Camshaft
Control
(VANOS)



1993-1998



Front
ofcylinder
head

Veh¡cle
Speed
Sensor



1992-1998



On
final
drive

Volume
Air
Flow
Sensor
(M42



1992-1995



Left
side
of
engine
compartment



Fig
.
7
.

Engine)

Washer
Fluid
Leve¡
Sensor



1992-1998



Right
frontof
engine
compartment

Washer
Pump



1992-1998



Right
side
of
engine
compartment
on
windshield
washer
reservoir



Fig
.
7
.

Wiper
Motor



1992-1998



Rear
engine
compartment

Wiper
Motor
Relay



1992-1998



Inleft
splice
panel
behind
footwell
speaker
grill



Fig
.
5
.

Wiper
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1992-1998



(
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I



Fig
.
8
./
Fig
.
9
.

Wiper/Washer
Module



1992-1993



Left
side
of
footwell
under
foot
rest
(early)

Wiper/Washer
Module



1993
(late)-



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glove
compartment



Fig
.
8
.
1998



1



Fig
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9
.

ZAE
Airbag
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Module



1
1994-1998



1
On
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rear
seat
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Control
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1994-1998



I
Behind
glove
compartment



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8
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