
170-6
RADIATOR
AND
COOLING
SYSTEM
Fig
.
6
.
Radiator
drain
plug
(arrow)
.
WARNING
-
Coolant
is
poisonous
.
Itis
especially
lethal
to
pets
.
Cleanup
spills
immediately
and
rinse
the
area
with
water
.
NOTE
-
The
block
drain
plug
is
located
on
the
exhaust
side
of
the
engine,
near
the
reas
of
the
engine
.
4
.
Reinstall
radiator
and
engine
block
drain
plugsusing
new
sealing
washers
.
Leave
heater
controis
on
full
warm
.
5
.
Using
a
coolantmixture
of
50%
antifreeze
and
50%
dis-
tilled
water,
fill
system
slowly
On
radiator
with
integral
expansion
tank,
bleed
cooling
system
as
described
be-
low
.
NOTE-
"
Tap
water
may
cause
corrosion
of
radiator,
engine
and
coolant
hoses
.
"
Coolant
can
often
be
reused
provided
itis
clean
and
less
than
twoyears
old
.
Do
not
reuse
coolant
when
re-
placing
damaged
engine
parts
.
Contaminated
coolant
may
damage
the
engine
or
cooling
system
.
Tabled
.
Cooling
System
Capacities
Engine
j
Capacity
4-cylinder
1
6
.5
liters
(6.9
qt)
6-cylinder
M50/M52
10
liters
(10
.6
qt)
S50US/S52US
10
.5
liters
(11
.1
qt)
COOLING
SYSTEM
SERVICE
Tightehing
Torques
"
Radiator
drain
plug
to
radiator
...
2-3
Nm
(18-27
in-lb)
"
Engine
block
drain
plug
to
block
.
.
..
25
Nm
(18
ft-Ib)
Cooling
system,
bleeding
(radiator
with
integral
expansion
tank)
NOTE
-
On
radiators
with
a
separate
expansion
tank,
ableed
screw
is
not
provided
.
The
cooling
system
with
sepa-
rate
expansion
tank
is
self
bleeding
via
the
vent
hose
on
the
expansion
tank
.
Air
maybecome
trapped
in
the
system
during
filling
.
Trapped
air
can
prevent
proper
coolant
circulation
.
Whenever
the
coolant
is
drained
and
filled,
the
system
should
be
bled
of
trapped
air
.
1
.
With
engine
cold,
add
coolant
to
expansion
tank
until
level
reaches
COLD
(KALT)
mark
on
tank
.
2
.
Loosen
bleed
screw
on
radiator
expansion
tank
.
See
Fig
.
7
.
0011976
Fig
.
7
.
Cooling
system
bleed
screwon
radiator
(arrow)
.
Note
cold
level
mark
on
expansion
tank
.
3
.
M3
models
:
Loosen
bleed
screw
on
thermostathous-
ing
.
4
.
Set
temperature
controls
in
passenger
compartment
to
fui¡
warm
and
turn
ignition
on
position
(do
not
start
en-
gine)
.

230-2
MANUAL
TRANSMISSION
Transmission
fluidleve¡,
checking
Checking
thetransmission
oil
level
involves
simply
remov-
ing
the
side
drain
plug
and
inserting
a
finger
into
the
holeto
check
the
fluid
leve¡
.
lf
the
fluid
leve¡
is
up
to
the
bottom
of
the
drain
hole
(finger
is
wetted
by
transmission
fluid),
the
leve¡
is
correct
.
Transmission
fluid,
replacing
NOTE-
Manual
transmission
fluid
type
should
be
printed
ona
label
on
the
side
of
the
transmission
.
If
in
doubt,
consult
an
authorized
BMW
dealer
for
the
up-to-dateinforma-
tion
on
operating
fluids
.
1
.
Drive
vehicle
for
afew
miles
to
warm
transmission
.
2
.
Raise
and
safely
support
vehicle
to
access
drain
plug
.
WARNING
-
"
When
raising
the
car
uslng
a
floor
jack
or
a
hy-
draulic
lift,
carefully
position
the
jack
pad
to
pre-
vent
damaging
the
car
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
shíít
or
tilt
.
As
the
car
is
raised,
the
car
may
roll
slightly
and
the
jack
may
shift
.
3
.
Place
a
drain
pan
under
transmission
andremove
drain
plug
at
bottom
of
transmission
.
See
Fig
.
1
.
Fig
.
1
.
Manual
transmission
fill
(1)
and
drain
plugs
(2)
.
TRANSMISSION
SERVICE
4
.
Install
and
torque
drain
plug
.
5
.
Remove
fill
plug
from
side
of
transmission
.
Slowly
fill
transmission
with
fluiduntilfluid
overflows
fill
hole
.
6
.
Install
and
torque
fluid
fill
plug
.
Fluid
Capacity
"
Getrag
transmission
...........
1
.0
liter
(1.1
US
qts)
"
ZF
transmission
.............
1
.2
liters(1
.3
US
qts)
Tightening
Torque
"
Transmission
drain
or
fill
plug
.......
50
Nm
(37
ft-Ib)
TRANSMISSION
SERVICE
Back-up
light
switch,
replacing
1
.
Raise
and
safely
support
vehicle
to
accessback-up
light
switch
.
NOTE-
"
The
back-up
light
switch
on
Getrag
transmissions
is
in
the
left
rearof
the
transmission
.
"
Theback-up
light
switch
on
ZF
transmission
isin
the
rightfront
of
thetransmission
.
2
.
Unscrew
switch
from
transmission
.
3
.
Install
new
switch
.
Tightening
Torque
"
Back-up
light
switch
to
transmission
..
..
.
.....
.
..
.....
20
Nm
(15
ft-ib)
4
.
Check
transmission
fluid
leve¡
before
lowering
vehicle
.

2
.
On
MS
270R/A4S
310R
transmissions
:
Remove
front
5
.
Installation
is
reverse
of
Rmoval
.
and
rear
oil
sump
mounting
bolts
andremove
sumps
"
Always
replace
sea¡
for
drain
plug
and
al¡
gasket(s)
andand
sump
gaskets
.
O-rings
.
"
Clean
sump
and
sump
magnet(s)
using
a
lint-free
NOTE-
cloth
.
The
MS
270
R/A4S
310
R
transmissions
may
be
fitted
"
On
MS
270R/A4S310R
transmissions
:
Use
new
bolts
with
ASE
(inch)
bolts
.
at
sump
and
tighten
bolts
in-line,
one
after
other
(do
nottighten
bolts
in
a
cross-wise
pattern)
.
3
.
On
A5S
310Z
transmission
:
Remove
oil
sump
mount-
"
On
MS
310Z
transmission,
be
sureto
instan
rounded
ing
bolts
and
brackets,
noting
position
of
brackets
.
Re-
sump
clamping
brackets
at
corners
of
sump
.
move
"
Fill
transmission
with
approved
fluid
.
sump
and
sump
gasket
.
"
Check
fluid
level
as
described
under
ATF
leve¡,
4
.
Remove
ATF
otra¡ner
mount¡ng
screws
and
remove
checking
.
strainer
together
with
gasket
orO-ring
.
See
Fig
.
4
or
Fig
.
5
.
Fig
.
4
.
A4S
270R/A4S310R
fluid
strainer
mounting
boits
(arrows)
.
Fig
.
5
.
A5S
310Z
fluid
strainer
mounting
boits
(arrows)
.
0013230
AUTOMATIC
TRANSMISSION
240-
3
NOTE-
Use
newsump
bolts
purchased
from
BMW
.
Alternative-
ly,
clean
old
bolts
and
coat
with
Loctite®
thread
locking
compound
or
equivalent
Automatic
Transmission
Fluid
Capacity
(refill
only)
"
MS
270R/A4S310R
Removal
of
large
sump
only
........
3
.0liters
(3.2
qt)
Removal
ofboth
sumps
...........
5
.0liters(5
.3
qt)
"
MS
310Z
..
..
..................
3
.3liters
(3.5
qt)
Tightening
Torques
"
ATF
drain
plug
to
ATF
sump
MS
270R/A4S
310R
..........
..
25
Nm
(18
ft-Ib)
MS
310Z(M10
plug)
..........
..
16
Nm
(12
ft-Ib)
"
ATF
fill
plug
to
ATF
sump
MS
270R/A4S
310R
..........
..
33
Nm
(24
ft-Ib)
MS
310Z(M30
plug)
.....
..
..
:.
100
Nm
(74
ft-Ib)
"
ATF
strainer
to
valve
body
MS
270R/A4S
310R
.....
..
.
...
.
20
Nm
(15
ft-Ib)
MS
310Z
..............
..
.
...
..
6
Nm
(53
in-lb)
"
ATF
sump
to
transmission
MS
270R/A4S
310R
(M6)
.
..
.
..
...
12
Nm
(9
ft-¡b)
MS
310Z
(M6)
..........
..
.
..
...
6
Nm
(53
in-¡b)
TRANSMISSION
SERVICE

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

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