
119-
6
LUBRICATION
SYSTEM
17
.
Raise
engine
as
much
as
possible
.
Check
carefully
for
22
.
Installation
is
reverse
of
removal
.
obstructions,
wiring
harness
clearance
and
pinched
hoses
or
lines
as
engine
is
raised
.
"
When
installing
oil
pan,
apply
a
b
d
of
non-hardening
sealing
compound
(3-Bond
1209
0
or
equivalent)
to
18
.
Remove
oil
pan
mounting
bolts
and
lower
oil
pan
to
front
and
rear
end
cover
seam
areas
on
block
.
subframe
crossmember
.
"
Position
oil
pump
pickup
tube
and
oil
pan
onto
block
and
install
pickup
tube
using
a
new
gasket
.
"
Be
sure
tab
on
gasket
faces
down
towards
intake
of
NOTE-
pickup
tube
.
If
the
oil
pan
does
not
separate
easily
from
the
engine
"
Tightenforward
oil
pan
screws
first,
then
tighten
rear
.
cylinder
block,
afew
taps
with
arubber
mallet
should
"
Fill
engine
with
oil
as
described
in
020
Maintenance
break
it
free
.
Do
not
pry
the
oil
pan
loose
.
Program
.
"
After
adding
engine
oil,
start
and
run
engine
.
Raise
en-
19
.
Remove
oil
pump
sprocket
mounting
nut
.
See
Fig
.
9
.
gine
speed
to
2,500
rpm
until
oil
pressure
warning
Lift
sprocket
off
together
with
drive
chain
.
lampgoes
out(about
5seconds)
.
Fig
.
9
.
Oil
pump
sprocket
mounting
nut
(left-hand
thread)
on
6-cylin-
OII
pan,
removing
and
installing
derengine(arrow)
.
(6-cylinder
engine,
1993
and
later
modeis)
NOTE-
The
oíl
pump
sprocket
nut
has
left
hand
threads
.
20
.
Unbolt
oil
pump
pickup
tubefrom
oil
pump
.
Unbolt
oil
pump
from
engine
block
.
See
Oil
pump,
removing
and
installing
(6-cylinder
engine)
.
21
.
Remove
oil
pan
from
rear
.
Tightening
Torques
"
Engine
mount
to
suspension
crossmember(M10
nut)
..
42
Nm
(31
ft-Ib)
"
Oil
pan
to
engine
block
(M6
bolt)
8
.8
grade
....
..
.
...
...
.
........
10
Nm
(89
in-lb)
10
.9
grade
.
.
..
.
..
...
.
.
.
.
.
.....
12
Nm
(106
in-lb)
"
Oil
pump
to
engine
block
.
...
...
.
..
22
Nm
(16
ft-Ib)
"
Oil
pump
sprocket
to
oil
pump
shaft
(M1
0x1
left-hand
thread)
...
..
.
.
..
.
25
Nm
(18
ft-Ib)
"
Power
steering
pump
to
bracket
(self-locking
nuts)
.....
.
....
..
.
...
22
Nm
(16
ft-lb)
"
Power
steering
pump
bracket
to
engine
block
or
oil
pan
(self-locking
nuts)
.
..
22
Nm
(16
ft-Ib)
NOTE-
Cars
built
after
9/92
use
a
different
suspension
cross-
member
¡han
earfier
productíon
cars
.
Oil
pan
removal
procedure
on
the
later
cars
requíres
that
the
engine
be
supported
from
aboye
and
the
front
suspension
cross-
member
be
unbolted
and
loweredfrom
the
chassis
.
1
.
Raisecar
and
place
securely
on
jackstands
.
2
.
Remove
splash
shield
fromunder
engine,
if
applicable
.
3
.
Drain
engine
oil
as
descríbed
in
020
Maintenance
Pro-
gram
.
4
.
Remove
alternator
cooling
duct
from
alternator
and
ra-
diator
support
.

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

119-
8
LUBRICATION
SYSTEM
17
.
Installation
is
reverse
of
removal
.
"
Thoroughly
clean
all
old
gasket
material
from
mating
surtaces
anduse
a
new
gasket
.
"
Applya
small
amount
of
non-hardening
sealer
(3-Bond
1209
0
or
equivalent)
to
oil
pan
gasket
directly
below
joints
for
and
cover
and
front
timing
case
cover
.
See
Fig
.
12
.
"
Tighten
oil
pan
bolts
starting
at
front
first,
working
to-
wardback
(transmission)
end
.
"
Fill
engine
with
oil
as
described
in
020
Maintenance
Program
.
"
After
addingengine
oil,
start
and
run
engine
.
Raiseen-
gine
speed
to
2,500
rpm
until
oíl
pressure
warning
lampgoes
out
(about
5seconds)
.
OIL
PUMP
applied
(arrows)
.
Apply
a
bead
3
mm
wideby
2
mm
high
.
WARNING
-
"
Always
use
new
bolts
when
mounting
the
sub-
frame
to
the
body
.
The
one-time
only
bolts
should
be
replaced
any
timethey
are
removed
.
"
Special
installation
instructions
apply
when
in-
stalling
the
front
suspension
crossmember
to
the
body
.
See
310
Front
Suspension
for
fastener
specifications
and
tightening
torques
.
Fig
.
12
.
Joint-mating
areas
at
oil
pan
gasket
where
sealer
should
be
Center
the
steering
spindle
to
the
steering
rack
before
in-
stalling
the
steering
column
shaft
.
See
320
Steering
and
Wheel
Alignment
for
more
specific
procedures
.
Tightening
Torques
"
Control
arm
bushing
carrier
to
body
(M10
bolt)
...............
47
Nm
(35
ft-Ib)
"
Engine
mount
to
suspension
crossmember(M10
nut)
..
42
Nm
(31
ft-Ib)
"
Oil
pan
to
engine
block
(M6
bolt)
8
.8
grade
...........
.......
....
10
Nm
(89
in-lb)
10
.9
grade
...........
..
...
...
.
12
Nm
(106
in-lb)
"
Stabilizer
bar
link
to
control
arm
(M10
nut)
.......
....
42
Nm
(31
Ib-ft)
"
Steering
column
universal
joint
to
steering
rack
spindle
(M8
bolt)
....
19
Nm
(14
ft-Ib)
"
Suspensíon
crossmember
to
body
...
...
.
...
..
.
.
See
310
Front
Suspension
OIL
PUMP
Oil
pump,
removing
and
installing
(4-cylinder
engine)
Oil
pressure
on
M42
and
M44
engines
is
generatedbya
gear-type
pump
mounted
to
the
rear
of
the
front
engine
cover
(timing
chaincase)
.
The
pump
is
gear-driven
off
the
front
of
the
crankshaft
.
NOTE-
Oil
pump
removal
requires
lowering
of
the
front
sus-
pension
and
removal
of
the
oil
pan,
as
well
asremoval
of
the
timing
chain
assembly
.
1
.
Disconnect
negative
(-)
battery
cable
from
battery
.
CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
paga
vÍii
.
2
.
Drain
engine
oil
as
described
in
020
Maintenance
Pro-
gram
.
3
.
Withengine
cold,
drain
coolant
.
See
170
Radiator
and
Cooling
System
.
4
.
Remove
top
cover
from
oil
filter
housing
to
allow
engine
oil
to
drain
into
oil
pan
.
Remove
oil
pan
as
described
earlier
.
Reinstall
oil
filter
cover
.
5
.
Remove
alternator
.
Unbolt
power
steering
pump
from
bracket,
then
remove
alternator
mountíng
bracket
.
See
121
Battery,
Starter,
Alternator
.
6
.
Remove
crankshaft
vibration
damper
andhub
.
Then
re-
move
upper
and
lower
timing
chain
covers,
complete
timingchain,
chain
sprockets
and
chain
guides
.
See
117
Camshaft
Tíming
Chain
.

7
.
Unbolt
timing
chain
casefrom
frontof
engine
.
See
Fig
.
13
.
9
.
Installation
is
reverse
of
removal
.
Fig
.
13
.
Timing
chain
case
mounting
bolts
(arrows)
on
M44
engine
.
8
.
Remove
cover
from
oil
pump
on
rear
of
timing
chain
case
.
See
Fig
.
14
.
Inspect
oil
pump
gears
and
oil
pump
cavity
in
timing
chain
case
for
wear
andlor
scoring
.
Fig
.
14
.
Oil
pump
cover
mounting
bolts
(arrows)
on
M44
engine
.
LUBRICATION
SYSTEM
119-
9
"
Replace
al¡
gaskets
and
O-rings
.
"
Install
a
new
rubber
sea¡
(profile
gasket)
between
top
of
timing
chain
case
and
cylinder
head
.
"
Be
sure
to
thoroughly
clean
sealing
surfaces
.
-Use
3-Bond
1209
orequivalent
sealant
on
both
sides
of
sea¡
before
installing
.
10
.
Protect
profile
gasket
using
thin
sheet
metal
(BMW
special
tool
no
.
11
2
330)
when
installing
timing
chain
case
.
See
Fig
.
15
.
"
Applya
thin
coating
of
grease
to
both
sides
of
sheet
metal
tool
and
to
top
surface
of
profile
gasket
.
"
Placesheet
metal
between
gasket
and
cylinder
head
and
carefully
slíde
upper
chain
cover
into
position
.
"
Tighten
al¡
mounting
bolts
and
then
carefully
withdraw
sheet
metal
.
Install
timing
chain
as
described
in
117
Camshaft
Timing
Chain
.
Fig
.
15
.
Use
thin
sheetmetal
(arrow)
toprotect
profile
gasket
during
installation
of
timing
chain
case
.
Carefully
withdraw
sheetmetal
after
tightening
fasteners
.
Tightening
Torques
"
Timing
chain
case
to
engine
block
M6
..
.
...
...
.
..
.............
.
.10
Nm
(7
.5
ft-Ib)
M8
........
.
..
..
..............
22
Nm
(16
ft-Ib)
"
Thermostathousing
to
upper
timing
chain
cover(M6)
............
10
Nm
(89
in-lb)
"
OH
filter
cover
to
oil
filter
housing
(M8)
.
.
.........
25
Nm
(18
ft-lb)
"
Oil
pump
cover
to
timing
chain
case
(M6)
...
..
.......
10
Nm
(89
in-lb)
"
Oil
pan
to
engine
block
(M6
bolt)
8
.8
grade
.........
.
.
..
.........
10
Nm
(89
in-lb)
10
.9
grade
............
.
.......
12
Nm
(106
in-lb)
"
Alternator
to
alternator
bracket
.....
43
Nm
(32
ft-Ib)
OIL
PUMP

119-
1
0
LUBRICATION
SYSTEM
Oil
pump,
removing
and
installing
(6-cylinder
engine)
Oil
pressure
on
the
6-cylinder
engines
is
generated
by
a
gear-type
pump
bolted
to
the
bottom
of
the
engine
block
.
The
oil
pump
is
chain
driven
off
the
front
of
the
crankshaft
.
NOTE-
Oil
pump
removal
requires
raising
the
engine
(cars
built
up
to
9-92)
or
lowering
the
front
suspension
crossmem-
ber
(cars
built
from
9-92)
to
remove
the
oil
pan
.
1.
Drain
oil
as
described
in
020
Maintenance
Program
.
2
.
Remove
oil
pan
as
described
earlier
.
3
.
Remove
oil
pump
sprocket
mounting
nut
(left-hand
thread)
.
See
Fig
.
16
.
Lift
sprocket
off
together
with
drive
chain
.
Fig
.
16
.
Oil
pump
sprocket
mounting
nut
(left-hand
thread)
on
6-cylin-
der
engine
(arrow)
.
4
.
Remove
mounting
bolts
from
oil
pump
and
oil
pump
pickup
tube
.
Withdraw
pump
.
NOTE-
Note
any
spacers
between
pump
and
engine
block
.
See
Fig
.
17
.
"
Note
position
of
locating
dowels
.
OIL
PUMP
811186
0011952
Fig
.
17
.
Oil
pump
mounting
points
(1)
and
pickup
tube
mountíng
points
(2)
.
5
.
Remove
coverfrom
oil
pump
and
check
for
wear
or
scoring
.
Spin
oil
pump
shaft
and
check
that
gears
turn
smoothly
.
Replace
pump
if
gears
spinwith
difficulty
or
any
wear
is
present
.
6
.
Installation
is
reverse
of
removal,
noting
the
following
:
"
Align
sprocket
splines
to
oil
pump
shaft
splines
before
tightening
sprocket
nut
.
Tightening
Torques
"
Oil
pump
to
engine
block
(M8)
......
22
Nm
(16
ft-Ib)
"
Oil
pan
to
engine
block
(M6
bolt)
8
.8
grade
..
...
.
...
...
.
.........
10
Nm
(89
in-lb)
10
.9
grade
.
...
.
..
....
.
........
12
Nm
(106
in-lb)
"
Oil
pump
sprocket
to
oil
pump
shaft
(M1
0x1
left-hand
thread)
..........
25
Nm
(18
ft-Ib)

Alternator
brushes,
STARTER
SERVICE
inspecting
and
replacing
Regulator
brushesarenot
available
as
replacement
parts
from
BMW
.
Replacement
brushes
may
be
available
from
af-
termarket
sources,
however
.
1
.
Remove
voltage
regulator
as
described
above
.
2
.
Clean
brush
contact
sürfaces
and
measure
brush
pro-trusion
.
See
Fig
.
7
.
Check
for
battery
voltage
at
terminal
50
of
the
starter
motor
Fig
.
7
.
Regulator
brush
protrusion
(A)
.
with
the
key
in
the
start
position
.
See
Fig
.
8
.
If
voltage
is
not
present,
check
the
wiring
between
the
ignition
switch
and
the
starter
terminal
.
If
voltage
is
present
and
no
other
visible
wir
Voltage
Regulator
ing
faults
can
be
found,
the
problem
is
most
likely
interna¡in
"
Brush
protrusion
(minimum)
.......
.
..
5
mm
(
1
/4
in
.)
the
starter
motor
.
3
.
To
replace
brushes,
carefully
and
as
quickly
as
possi-
ble,
unsolder
brush
lead
from
brush
holder
termina¡,
withdrawing
brush
from
holder
at
same
time
.
4
.
Remove
any
traces
of
solder
frombrush
holder
termi-
nal
using
solder
wick
.
5
.
Fit
spring
into
brush
holder
and
inserí
new
brush
.
6
.
Guide
brush
lead
into
terminal
and
solder
into
place
.
Check
for
free
movement
of
brushes
when
solder
cools
.
7
.
Check
brush
slip
rings
in
alternator
for
wear
.
Lightly
clean
slip
rings
using
fine
abrasive
cloth
.
BATTERY,
STARTER,
ALTERNATOR
121-
7
Starter
Troubleshooting
If
the
starter
tucos
the
engine
slowlyor
fails
to
operate
when
the
ignition
isin
the
start
position,
check
the
battery
first
.
In-
spect
the
starter
wires,
terminals,
and
ground
connections
for
good
contact
.
In
particular,
make
sure
the
ground
connections
between
the
battery,
the
body
and
the
engine
are
completely
clean
and
tight
.
If
no
faults
can
be
found,
the
starter
may
be
faulty
and
should
be
replaced
.
NOTE
-
"
Starting
in1194,
a
factory-installed
drive-away
protec-
tion
system,
alsoreferred
to
as
EWS
or
EWS
11,
was
used
on
all
E36
cars
.
This
system
prevenís
operation
of
the
starter
when
the
system
is
engaged
.
See
515
Central
Locking
and
Anti-theft
.
"
On
cars
with
automatic
transmission,
a
starter
relay
and
a
neutral
safetyswitchare
used
to
present
theen-
ginefrom
starting
in
gear
positions
other
than
park
or
neutral
.
ff
voltage
is
not
present
atterminal
50
with
the
key
in
the
startposition,
check
these
components
To
make
the
most
accurate
check
of
the
battery
cables
and
starterwiring,
make
a
voltage
drop
test
on
the
cables
and
wir-
ing
as
described
in
600
Electrical
System-General
.
Terminal
30
'
\
/
Terminal
30h
0012518
8
.
Reinstall
regulator
and
alternator
.
Fig
.
8
.
Typical
starterwiring
terminal
identification
.
Large
wireat
ter-
minal
30
is
direct
battery
voltage
.
Smaller
wire
at
terminal
50
operates
starter
solenoid
via
ignition
switch
.
STARTER
SERVICE

u0
I
.[
Ia
Fig
.
21
.
Air
flow
sensor
harness
connector
terminal
identification
.
4
.
Replacing
air
flow
sensor
:
"
Remove
large
band
clamp
attaching
air
boot
to
sensor
.
"
Remove
airfiltertop
cover,
then
remove
airflow
sensor
mounting
nuts
inside
cover
.
"
Reconnect
air
boot
and
harness
connector
.
Engine
coolant
temperature
(ECT)
sensor,
testing
and
replacing
The
engine
coolant
temperature
(ECT)
sensor
sends
con-
tinuous
engine
coolant
temperature
information
to
the
ECM
.
As
temperature
increases,
sensor
resistance
decreases
.
"
With
harness
connector
disconnected,
check
resis-
tance
across
sensor
terminals
.
"
Compare
tests
results
to
values
in
Table
d
.
FUEL
INJECTION
130-
1
5
0011984
Fig
.
22
.
M42
engine
coolant
temperature
(ECG
sensor
(arrow)
.
Table
d
.
Engine
Coolant
Temperature
Sensoror
Intake
Air
TemperatureSensor
Test
Values
(DME
1
.7)
Test
temperatures
Resistance
(k
ohms)
',
14±2°F(-10t1°C)
7-11
.6
68±2°F
(20
t
1
°C)
2
.1
-2
.9
176
±
2°F
(80
t
V
C)
0
.27-0
.40
The
ECT
sensor
is
located
under
number
one
intake
run-
'
ner
.
See
Fig
.
22
.
NOTE-
1
.
Check
ECM
referente
voltage
to
sensor
:
The
test
values
listed
represent
only
three
test
points
from
a
continuous
resistance
NTC
sensor
.
Check
the
"
Disconnect
harness
connectorfrom
ECT
sensor
.
full
linear
response
to
increasing
temperature
as
the
"
Turn
ignition
key
on
.
engine
warms
up
.
"
Check
for
5
volts
between
supply
voltage
(brown/red)
wire
of
harness
connector
and
ground
.
3
.
If
ECT
sensor
fails
these
tests,
it
is
faulty
and
should
be
"
Turn
ignition
key
off
.
replaced
.
If
no
faults
are
found,
reconnect
electrical
"
If
voltage
is
not
present
or
incorrect,
check
wring
from
harness
.
ECM
and
check
ECT
sensor
reference
voltage
output
at
ECM
.
See
Table
h
.
NOTE-
2
.
Check
ECT
sensor
resistance
:
Use
a
new
copper
sealing
washer
when
installing
sen-
sor
.
Reptace
any
lost
coolant
.
WARNING
-
Do
not
replace
the
ECT
sensor
unlessthe
engine
is
cold
.
Hot
coolant
can
scald
.
Tightening
Torque
"
ECT
sensor
to
cylinder
head
.....
..
13
Nm
(10
ft-Ib)
BOSCH
DME
M1
.7
COMPONENT
TESTS
AND
REPAIRS

160-2
FUEL
TANK
AND
FUEL
PUMP
0011943
1
.
Filler
pipe
10
.
Fuel
compensating
siphon
pump
and
hose
assembly
2
.
Filler
pipe
grounding
tab
(models
built
from
1/95)
3
.
Vent
pipe
11
.
Fueltank
4
.
Threaded
collar
12
.
Tank
support
strap
5
.
Rubber
ring
seal
13
.
Bolt-tighten
to
23
Nm
(17
ft-Ib)
6
.
Fuel
pump
14
.
Fuel
expansion
tank
7
.
Left
side
fuel
leve¡
sender(models
built
from
1/95)
15
.
Fuel
tank
pressure
sensor
(OBD
II)
8
.
Right
side
fuel
leve¡
sender9
.
Left
side
fuel
leve¡
sender
with
fuel
compensating
siphon
pump
(models
built
up
to
1/95)
Fig
.
1
.
E36
fuel
tank
assembly
.
FUEL
TANK
AND
LINES
Fuel
tank,
draining
The
plastic
fuel
tank
is
mounted
beneath
the
center
of
the
car
(beneath
rear
seat)
.
Mounted
in
the
fuel
tank
are
the
fuel
pump
and
fuel
leve¡
sending
units
.
Connecting
lines
for
the
evaporative
emission
control
systemand
expansion
tank
are
also
attached
to
the
tank
.
When
performing
the
procedures
that
follow,
refer
toFig
.
1
.
Fuel
tank
capacity
for
E36
modeis
"All
ex
.
1996
M3
(3
.0
L)
.....
.
..
..
65
liters
(17
.0
gal)
"
1996
M3
(3.0L)
modeis
.
...
.
..
.
.62
liters
(16
.4
gal)
FUEL
TA
NKAND
LINES
The
fuel
tank
should
be
drained
into
an
approved
storage
unit
or
another
car's
fuel
tank
.
WARNING
-
"
Before
removing
the
tank,
be
sure
that
afl
hot
components
such
as
the
exhaust
system,
are
completely
cooled
down
.
"
Fuel
may
be
spilled
.
Do
not
smoke
or
worknear
heaters
or
other
Pire
hazards
.
1
.
Disconnect
negative
(-)
cable
from
battery
.
CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
paga
vi¡¡
.