1998 BMW 328i Cooler lines

14
.
Unbolt
power
steering
fluid
reservoir
from
íts
mounting
bracket
.
Use
stiff
wire
to
hang
reservoir
to
one
side
.
Do
not
disconnect
fluid
lines
.

15
.
Remove
power
steering
pump
drive
belt
and
remove
pump
from
its
mounting
bracket
.
Use
stiff
wire
to
hang
pump
from
body
.

16
.
On
cars
with
automatic
transmission
remove
front
and
rear
brackets
holding
automatic
transmission
cooler
linesto
engine
.

17
.
Remove
A/C
compressor
from
its
mounting
bracket
without
disconnecting
any
refrigerantlines
.
See
Fig
.
5
.

ENGINE
REMOVAL
AND
INSTALLATION



110-
3

21
.
Remove
front
exhaust
pipefrom
exhaust
manifold
.
See

Fig
.
6
.

22
.
Install
an
engine
lifting
device
and
raise
engine
until
its

weight
is
supported
.
Remove
nuts
and
ground
strap

from
left
and
right
engine
mounts
.

0011967

Fig
.
6
.



Front
exhaustpipe
to
exhaust
mounting
nuts
(arrows),
as
viewed
from
below
on
4-cylinder
engine
.

23
.
Carefully
raíse
engine
out
of
car,
checking
for
any
wir-
ing
harnesses,
fuel
lines,
or
mechanical
parts
that
might
become
snagged
as
engine
is
removed
.

24
.
Installation
is
reverse
of
removal,
noting
the
following
:

"
Replace
all
gaskets,
O-rings
and
seals
.

"
Change
engine
oil
and
filter
and
check
al¡
other
fluid
levels
.
See020
Maintenance
Program
.
"
Refill
and
bleed
cooling
system
.
See
170
Radiator
and
Cooling
System
.

"
Insta¡¡
the
front
exhaust
pipes
using
new
gaskets
and

self-locking
nuts
.
Use
copper
pasteon
threads
.
See

180
Exhaust
System
.

Tightening
Torques

"
Coolant
drain
plug
to
cylinder
block
.
25
Nm
(18
ft-Ib)

Fig
.
5
.
A/
C
compressor
mounting
bolts
(arrows)
.



"
Engine
mount
to
subframe

M8
......:...
..
..
..
......,:..
22
Nm
(17
ft
-
1b)
,

18
.
Move
A/C
compressor
out
of
way
without
distorting
or



M10
.
...
.



..
...
.
.
...........
45
Nm
(33
ft'-Ib)

damaging
any
lines
.
Support
compressor
by
hanging
it



"
Intake
manifold
to
cylinder
head

from
chassis
using
stiff
wire
.



M7
.....
.
..
...
..
..
...........
15
Nm
(11
ft-Ib)
M8
...
.
.
.
..
..
...
..
...........
22
Nm
(16
ft-Ib)

19
.
Disconnect
wiring
from
starter
and
alternator
.
Move



`
"
Radiator
cooling
fan
to
coolant
pump40
Nm
(30
ft-Ib)

wiring
harness
out
of
way
.
See
121
Battery,
Starter,



"
Radiator
drain
screw
to
radiator
...
2
.5
Nm
(22
in-lb)

Alternator
.



"
Wiring
to
alternator
(M8
nut)
........
12
Nm
(9
ft-1b)

"
Wiring
to
starter

20
.
Remove
oil
dipstick
guide
tube
.
Note
O-ring
at
base
of



M6
nut
..
.
..
..
...
..
...........
.
:5
Nm
(44
in-lb)

tube
when
removing
.



M8
nut
..
.
..
..
...
..
............
12
Nm
(9
ft-Ib)

ENGINE
REMOVAL
AND
INSTALLATION

110-
4



ENGINE
REMOVAL
AND
INSTALLATION

Engine,
removing
and
installing

(6-cylinder
engines)

Engineremoval
procedures
for
the
various
6-cylinder
en-

gines
arecovered
in
this
section
.
Most
steps
in
theproce-

dures
are
similar
or
the
same
for
al¡
engines
.
Specific

differences
that
apply
are
noted
at
the
beginning
of
each
step
.

Be
sure
to
cover
all
painted
surfaces
before
beginning
the

removal
procedure
.
As
an
aid
to
installation,
label
all
compo-

nents,wires,
and
hoses
before
removing
them
.
Do
not
reuse

gaskets,
O-rings
or
seals
during
reassembly
.

WARNING
-

Due
to
risk
of
personal
injury,
be
sure
the
engine
is
cold
before
beginning
the
removalprocedure
.

1
.
Disconnect
negative
(-)
battery
cable
in
luggage
com-

partment
.

CAUTION-

Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpage
vi¡¡
.

2
.
Remove
engine
hood
or
place
hood
in
service
position
.

See410
Fenders,
Engine
Hood
.

NOTE-

1t
is
not
necessary
to
remove
the
engine
hood,
but
it
is
helpful
and
will
make
engine
removal
and
installation
easier
.

3
.
Remove
splash
guardunder
engine,
if
applicable
.

4
.
Remove
transmission
from
car
.
See
230
Manual

Transmission
or
240Automatic
Transmission
.

5
.
Remove
vacuum
hosefrom
brake
booster
on
bulkhead
.

Cover
hole
in
booster
and
plug
hose
end
.

6
.
Remove
intake
air
plenum
panel
in
rear
of
engine
com-
partment
.
See
640
Heating
and
AirConditioning
.

7
.
Remove
ground
strap
from
timing
case
cover,
if
appli-

cable
.

8
.
Remove
top
enginecovers
and
disconnect
ignition
coil
harness
connectors
.
Working
at
fuel
injectors,
pry
open
small
wire
clipsat
each
injector
.
Remove
main
harness

hold-down
nuts
and
lift
completeharness
away
.
See
Fig
.
7
.

ENGINE
REMOVAL
AND
INSTALLATION

Fig
.
7
.



Remove
mainharnessfrom
top
engine
and
place
at
base
of

windshield
.

0012703

Fig
.
8
.



Mass
air
flow
sensor
connector
air
duct
hose
clamp,
and
air
cleaner
housing
mounting
bolts
(arrows)
.

9
.
Unbolt
andremove
complete
air
cleaner
housing
with



10
.
On
cars
with
automatic
transmission,
remove
front
and
mass
air
flow
sensor,
disconnecting
and
labeling
con-



rearbrackets
holding
transmission
cooler
linesto
side
nectors,
ducting
and
hoses
asnecessary
.
See
Fig
.
8
.



of
engine
.

8
.
Remove
air
plenum
from
rear
of
engine
compartment
.
See
640
Heating
and
Air
Conditioning
.

9
.
Release
drive
belt
tension
and
remove
alternator
drive
belt
.
Remove
A/C
compressor
drive
belt
.
See
Fig
.
6
.

B11143
Fig
.
6
.



To
remove
poly-ribbed
drive
belt,
pry
cover
from
front
of
ten-
sioner
.
Then
using
8
mm
hex
key,
turntensioner
clockwise
(arrow)
torelease
tension
and
slip
belt
off
pulleys
.

10
.
Unbolt
power
steering
reservoir
and
pull
reservoir
off
engine
mount
bracket
.

11
.
Without
disconnecting
fluid
lines,
remove
power
steer-
ing
bracket
(with
pump)
from
oil
panand
engine
block
.
See
Fig
.
7
.
Disconnect
fluid
lines
from
bracket
on
en-
gine
mount
.
Hang
pump
from
chassis
using
wire
.

12
.
Without
disconnecting
refrigerant
lines,
remove
A/C
compressor
from
engine
block
.
Hang
compressor
from
chassis
using
wire
.
See
640
Heating
and
Air
Condi-
tioning
.

13
.
Remove
oil
dipstick
guide
tube
mounting
bolt
and
re-
move
tube
.
See
Fig
.
8
.

NOTE-

The
guide
tube
is
sealed
in
the
oil
pan
with
an
O-ring
.
Check
that
the
O-ring
comes
out
with
the
tube
.
Use
anew
O-ring
when
installing
the
tube
.

14
.
On
cars
with
automatic
transmission,
remove
brackets
holding
ATF
cooler
linesto
oil
pan
and
cylinder
block
.

LUBRICATION
SYSTEM



119-
5

Fig
.
7
.



Power
steering
pump
mounting
bolts
(arrows)
.

Fig
.
8
.



Oil
dipstick
guide
tube
being
removed
.
Usea
new
O-ring
(arrow)
during
installation
.

15
.
Insta¡¡
engine
lifting
equipment
at
front
engine
lifting
point
and
raise
engine
just
until
its
weight
is
supported
.

16
.
Remove
nuts
at
bottom
of
left
and
right
engine
mounts
.
Remove
ground
wire
from
right
engine
mount
.
1-oosen
nuts
at
top
of
left
and
right
engine
mounts
(do
not
re-
move)
.

OIL
PAN

5
.
Remove
air
filter
housingcomplete
with
mass
air
flow
sensor
.
See113
Cylinder
HeadRemoval
and
Instal-
lation
.

6
.
Remove
oil
dipstick
guide
tube
mounting
bolt
.
Discon-
nect
oil
separator
hose
frombase
of
guide
tube
and
re-
move
tubefrom
oil
pan
(where
applicable)
.
See
Fig
.
10
.

NOTE-

The
guide
tube
is
sealed
in
the
blockusing
an
O-ring
.
Check
that
the
O-ring
comes
out
with
the
tube
.
Use
a
new
O-ring
when
installing
the
tube
.

Fig
.
10
.
Oil
dipstick
guide
tube
being
removed
.
Use
new
O-ring
(ar-
row)
during
installation
.

7
.
M50/S50US
engine
:
Using
a
clean
syringe,
remove
power
steering
fluid
from
fluid
reservoir
.
Disconnect
power
steering
fluid
lines
from
steering
rack
.
See
320
Steering
and
Wheel
Alignment
.

8
.
M52/S52US
engine
:
Unbolt
power
steering
reservoir
from
engíne,
then
tie
to
chassis
with
wire
.

9
.
Insta¡¡
engine
lifting
equipment
atfront
engine
lifting
point
and
raise
engine
approximately
5
mm
('/a
inch)
until
engineweight
is
supported
.
See
Fig
.
11
.

10
.
Workingbeneath
car,
separate
steering
column
shaft
from
steeringrack
at
universal
joint
.

"
Mark
steering
column
shaft
jointto
steering
rack
spin-

dle
.
Point
wheels
straight
ahead
before
disconnecting
shaft
from
rack
.
See
320
Steering
and
Wheel
Align-
ment
.

LUBRICATION
SYSTEM



119

Fig
.
11
.
Engine
lifting
equipment
shown
installed
acrossengíne
.

CA
UTION-

In
order
to
avoid
the
need
for
front-end
realign-
ment,
donot
unbolt
power
steering
rack
from
sus-
pension
crossmember
.

11
.
Support
suspension
crossmember
from
below
using
appropriate
jacking
equipment
.

12
.
Loosen
nuts
at
top
of
left
and
right
side
engine
mounts
.
Remove
nuts
from
bottom
of
left
and
right
side
engine
mounts
.

13
.
At
left
and
right
sides,
unbolt
control
arm
bushíng
carri-
ers
from
body
.
Disconnect
stabilizer
bar
links
fromcon-
trol
arms
.
Refer
to
Fig
.
3
.

14
.
Remove
bolts
from
left
and
right
sides
of
suspension
crossmember
and
lower
front
axle
as
far
as
possible
.

15
.
Remove
fuelline
clamping
brackets
from
oil
pan
.
On
cars
with
automatic
transmission,
remove
ATF
cooler
line
brackets
from
oil
pan
.

16
.
Remove
oil
pan
screws
.
Lower
and
remove
oil
pan
for-
ward
to
remove
.

CA
UTION-

If
the
oil
pan
does
not
separate
easily
from
the
en-
gine
cylinder
block,
a
few
taps
with
a
rubber
mallet
shouldbreak
it
free
.
Do
notpry
the
oil
pan
loose
.

OIL
PAN

Fig
.
19
.
Coolant
pump
being
removed
.
Thread
two
M6
bolts
(arrows)
in
evenly
to
withdraw
pump
.
(Thermostat
and
hoseshavebeen
removed
tor
visual
access
.)

8
.
Installation
is
reverse
of
removal
.

"
Be
sure
to
replace
O-ring
and
gaskets
.

"
Coat
O-ring
with
lubricant
during
installation
.

Tightening
Torque

"
Coolant
pump
to
timing
chaincover

M6
...
.
...................
..
.
.
10
Nm
(89
in-lb)

M8
.
..
.
....................
.
.
.
22
Nm
(17
ft-Ib)

"
Coolant
pump
pulley

to
coolant
pump
.................
10
Nm
(89
in-lb)

RADIATOR
SERVICE

Radiator,
removing
and
installing

1
.
Drain
radiator
as
described
earlier
.

WARNING
-

Allow
cooling
system
to
cool
before
opening
ordraining
system
.

2
.
Remove
primary
cooling
fan
(belt-driven
or
electric)
as

described
earlier
.

3
.
Disconnect
coolingfan
and
leve¡
sensor
harness
con-

nectors
from
bottom
of
radiator,
where
applicable

4
.
Disconnect
harness
connector
from
auxiliary
fandual

temperature
switch
.
See
Fig
.
20
.

5
.
Disconnect
all
coolant
hoses
from
radiator
.

RADIATOR
AND
COOLING
SYSTEM



170-11

0012500

Fig
.
20
.
Cooling
fan
dual
temperatura
switch
(arrow)
on
right
sido
of
radiator
.

6
.
Where
applicable,
disconnectautomatic
transmission
fluid
(ATF)
cooler
lines
from
radiator
.
See
Fig
.
21
.

Fig
.
21
.
Automatic
transmission
fluid
(ATF)
linos
at
radiator
.

7
.
Carefully
pryout
radiator
retaining
clips
from
top
of
ra-

diator
.
See
Fig
.
22
.

8
.
Pul¡
radiator
up
and
out
of
car
.

NOTE-

The
radiator
rests
ontwo
rubber
mounts
.
Check
that

the
mounts
do
not
stick
to
the
bottomof
the
radiator
.

RADIATOR
SERVICE

8
.
Disconnect
main
harness
connector
from
transmission

by
turning
its
bayonet
lock
ring
counterclockwise
.
Re-

move
wiring
harness
from
transmission
housing
.
See
Fig
.
8
.

Fig
.
8
.



Harness
connector
at
automatic
transmission
.

9
.
Where
applicable,
disconnect
harness
connector
from

speed
sensor
at
top
óf
transmission
.

10
.
Disconnect
transmission
cooler
line
clamps
from
en-

gine
.
Disconnect
lines
from
transmission
.

11
.
Support
transmission
with
transmission
jack
.
Remove

reinforcing
cross
brace
(if
applicable)
and
transmission

support
crossmember
.

NOTE-

Note
installation
positionof
support
crossmember
.

12
.
Remove
access
plug
in
cover
plate
on
right
side
of
en-

gine
block
and
remove
torqueconverter
bolts
.
Turn

crankshaft
to
access
boits
.
See
Fig
.
9
.

AUTOMATIC
TRANSMISSION



240-
5

Bellhousing
access
hole

Socket
wrench

Fig
.
9
.



Access
andremove
torque
converter
boits
through
hole
in
bellhousing
cover
.

0

A

fij
13
.
Remove
bellhousing-to-engine
mounting
bolts
.
See



Fig
.
10
.
Transmission-to-engine
Torx-head
mounting
bolts
.
Fig
.
10
.

0012592

TRANSMISSION
REMOVAL
AND
INSTALLATION

240-
6



AUTOMATIC
TRANSMISSION

14
.
Remove
transmission
by
pulling
back
and
down
.
Lower

jack
to
allow
transmission
to
clear
vehicle
.



Tightening
Torques

"
ATF
drain
plug
to
ATF
sump

CA
UTION-



MS
270R/A4S
310R
....
..
....
.
..
25
Nm
(18
ft-Ib)

Do
not
allow
the
torque
converter
to
fati
off
the



ASS
310Z(M10
plug)
..
..
..
.
.
..
.
..
16
Nm
(12
ft-Ib)

transmission
inputshaft
.



"
ATF
fill
plug
to
ATF
sump

MS
270R/A4S
310R
..
..
....
..
..
.
33
Nm
(24
ft-Ib)

15
.
Installation
is
reverse
of
removal,
noting
the
following
:



MS
310Z(M30
plug)
......
.
.
..
.
.
100
Nm
(74
ft-Ib)

"Blowoutofcoolerlineswithlow-pressurecompressed



"
ATF
cooler
lines
(A4S
270R/A4S
310R)

air
and
flush
coolerwith
clean
ATF
twice
before
reat-



Coupling
nuts
............
.
.
..
..
.
20
Nm
(15
ft-Ib)

taching
lines
to
transmission
.



Hollow
bolts
.........
.
.....
..
..
.
37
Nm
(28
ft-Ib)

"
Reinforcing
cross
brace

CAUTION-



to
chassis
(M10)
.............
.
..
.
42
Nm
(31
ft-Ib)

"
Wear
safety
glasses
when
working
with
com-



"
Torque
converter

pressedair
.



to
driveplate
(M10)
.........
..
.
..
45
Nm
(33
ft-Ib)

"
Transmissionsupport
crossmember
to
chassis

"
Do
not
reuse
ATF
after
flushing
.



M8
......................
22-24
Nm
(16-17
ft-1b)

M10
................
.
....
..
.
..
42
Nm
(31
ft-Ib)

"
Install
new
sealing
washers
on
hollow
bolts
.



"
Transmissíon
to
engine
(Torx-head
with
washer)

"
Insta¡¡
new
O-rings
on
transmission
cooler
lines,
where



M8
......................
..
.
..
21
Nm
(15
ft-Ib)

applicable
.



M10
.....................
..
..
.
42
Nm
(31
ft-Ib)

"
Inspect
driveplate
for
cracks
or
elongatedholes
.
Re-



M12
................
.
....
..
.
..
72
Nm
(53ft-Ib)

place
if
necessary
.

"
Check
to
be
sure
torque
converter
is
seated
correctly

in
transmission
during
final
installation
.

"
When
mounting
transmission
to
engine,
the
three

mounting
tabs
on
torque
converter
must
be
aligned

with
indentations
on
driveplate
.
Use
an
alignment

dowel
to
line
up
bolt
holes,
if
necessary
.
"
Fill
transmission
with
clean
ATF
until
oil
leve¡
is
even
with
fill
hole
.
Then
check
fluid
leve¡
as
described
ear-
lier
.

"
Adjust
gearshift
mechanism
.
See
250
Gearshift
link-

age
.

NOTE-

Torx-head
mounting
bolts
shouldalwaysbe
used
with
washers
to
prevent
difficult
removal
.

TRANSMISSION
REMOVAL
AND
INSTALLATION