1996 BMW 318i Oil pan
[x] Cancel search: Oil panPage 78 of 759
113-12
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
18
.
Working
from
underside
of
intake
manifold,
disconnect
21
.
Detach
oil
dipstick
guide
tube
from
manifold
.
Disconharness
connectors,
vent
hoses,
and
air
bypass
nectvent
hose
at
base
of
dipstick
.
hoses)
.
22
.
Remove
intake
manifold
from
engine
byremoving
sev-19
.
Working
at
rear
of
intake
manifold,
label
and
disconnect
en
mounting
nuts
from
above
andtwo
support
bracket
fuel
supply
and
fuel
return
lines
.
Remove
fuelline
hold
bolts
from
below
.
See
Fig
.
32
.
down
bracket
to
free
lines
.
See
Fig
.
31
.
NOTE-
On
M52IS52US
engines,
a
special
fitting
is
used
to
re-tain
the
fuel
fines
to
the
fuel
rail
.
Use
BMW
special
tool
no
.
16
1
050
to
expand
the
locking
clip
inside
the
end
of
the
fuellíne
fittings
.
WARNING
-
"
The
fuel
system
is
desígned
to
retan
pressure
even
wheh
the
ignition
is
off
.
When
working
with
the
fuel
system,
loosen
the
fuel
lines
slowly
toal-
low
residual
fuel
pressure
to
dissipate
gradually
.
Avoid
spraying
fuel
.
"
Fuel
is
highly
flammable
.
When
working
around
fuel,
do
not
disconnect
any
wires
that
could
cause
electrfcal
sparks
.
Do
not
smoke
orwork
near
heaters
or
other
fire
hazards
.
"
Always
unscrew
the
fuel
tank
cap
to
release
pres-
sure
in
the
tank
before
working
on
the
tank
or
lines
.
20
.
Remove
mountingscrews
and
release
wiring
harness
duct
at
rear
bulkhead
and
move
aside
.
Remove
wiring
harness
brackets
frombulkhead
.
CYLINDER
HEAD,
6-CYLINDER
Fig
.
32
.
Intake
manifoldnuts
and
support
bracket
bolts
(arrows)
.
CAUTION-
Stuff
clean
rags
into
the
open
intake
ports
topre-
001269s
vent
any
ports
from
falfing
into
the
engine
.
Fig
.
31
.
Fuel
lines
at
intake
manifold
on
M52/S52
engine
.
Use
BMW
special
tool
16
1
050
to
release
locking
fittings
at
ends
of
fuel
enes
.
1
Timing
chains,
uncoupling
23
.
Remove
VANOS
unit
from
frontof
cylinder
head
.
See
VANOS
section
in
117
Camshaft
Timing
Chain
.
24
.
Setengine
to
approximate
TDC
by
rotating
in
normal
operating
direction
until
camshaft
lobes
at
cylinder
no
.
1
are
facing
each
other
.
Arrows
on
camshaft
sprockets
should
be
pointing
up
.
NOTE-
To
confirm
that
the
crankshaft
is
set
to
the
TDC
posi-
tion,
check
that
the
OIT
mark
(0°
TDC)on
the
front
low-
er
timing
chain
cover
ís
aligned
with
the
víbration
damperSee
Fig
.
33
.
25
.
Lock
crankshaft
at
TDC
.
"
Insert
BMW
special
tool
no
.
11
2
300
through
transmis-
sion
bellhousing
and
finto
hole
in
flywheelor
drive
plate
.
See
Fig
.
34
.
Page 101 of 759
M42
Engine
CL
(EM
Fig
.
11
.
Two
versionsof
hydraulic
chaintensioners
.
Original
chain
ten-
sioner
on
M42
engine
(top)
canbe
disassembled
.
Chain
ten-
sioner
on
M44
engine
(bottom)
cannot
be
disassembled
.
Note
differences
in
outer
sleeve
.
Also,
the
M42
tensioner
de-
tent
ring
groove
is
visible
when
tensioner
is
extended
(arrow)
.
Outer
sleeve
Spring
0013024a
Detent
ring
9
.
On
M44
engines
:
Clamp
tensioner
piston
in
vice
(soft
jaws)
and
squeeze
oil
from
it
.
Slowly
compress
piston
only
up
to
end
círclip
.
Repeat
procedure
twice
to
ensure
al¡oil
is
expelled
.
See
Fig
.
13
.
10
.
Insta¡¡
hydraulic
chain
tensioner
lo
cylinder
head
.
Usea
new
sealing
washer
on
tensionerplug
when
installing
.
Tightening
Torque
"
Chain
tensioner
to
cylinder
head
....
40
Nm
(30
ft-Ib)
11
.
On
M42
engines
:
Release
early-style
chain
tensioner
by
pressing
chain
guide
against
tensioner
until
it
un-
locks
and
expands
out
.
CAMSHAFT
TIMING
CHAIN
117-
5
0012507
Fig
.
13
.
When
reinstalling
chain
tensiones,
oil
in
tensioner
piston
must
first
be
expelled
by
compressing
piston
in
vise
.
When
com-
pressing
piston,
only
compress
up
to
and
circlip
(arrow)
.
Tightening
Torque
"
Chain
sprocket
lo
camshaft
flange
(M6)
..
.
..
.............
.
..
10
Nm
(89
in-lb)
13
.
Remove
crankshaft
locking
tool
from
bellhousing
and
camshaft
locking
tool
from
rear
of
cylinder
head
.
14
.
Install
lower
timingchain
cover
:
"
Insta¡¡
new
crankshaft
oil
seal
in
cover
.
"
Use
new
gaskets
when
installing
cover
.
"
Thoroughly
clean
profile
gasketgroove
and
all
gasket
sealing
surfaces
on
lowerchaincover
.
"
Apply
a
small
bead
of
silicon
sealer
(3-Bond
1209
or
Snap
equivalent)
lo
joint
corners
where
chaincover
meets
ring
0013024
head
and
block
.
See
Fig
.
14
.
"
Tap
cover
into
position
to
engage
locating
dowels
.
Fig
.
12
.
Disassembled
early-style
chain
tensioner
usadon
M42
en-
"
Tighten
cover
mounting
bolts
alternately
and
in
stages
.
gine
.
12
.
Check
that
chain
is
now
free
of
siack
.
Tighten
down
sprocket
mounting
bolts
.
where
chain
cover
meets
head
and
block
(arrows)
.
Fig
.
14
.
Apply
sealer
(3-Bond
1209
0
or
equivalent)
to
joint
corners
CAMSHAFT
TIMING
CHAIN,
4-CYLINDER
Page 102 of 759
117-
6
CAMSHAFT
TIMING
CHAIN
15
.
Insta¡¡
upper
timing
chaincover
:
17
.
Remove
crankshaft
locking
tool
from
transmission
bell-
"
Thoroughly
clean
profile
gasketgroove
and
all
sealing
housing
and
camshaft
locking
tool
from
rear
of
cylinder
surfaces
.
head
.
"
Applya
small
bead
ofsilicon
sealer
(3-Bond
1209®
or
equivalent)
to
upper
and
lower
joint
comers
where
18
.
Turn
engine
over
by
hand
in
direction
of
rotation
at
least
chaincover
meets
cylinder
head
.
two
full
rotations
.
Reinstall
camshaft
and
crankshaft
"
Insta¡¡
new
profile
gasket
to
groove
in
lowerchain
cover
.
locking
tools
to
check
engine
timing
.
Repeat
cam
timing
"
Protect
top
of
profile
gasket
using
thin
sheetmetal
procedure
if
tools
do
not
fit
easily
into
position
.
Remove
(BMW
special
tool
no
.
11
2
330
or
equivalent)
.
See
locking
tools
.
Fig
.
15
.
"
Attach
new
gaskets
to
cover
with
light
dabs
of
gasket
19
.
Install
cylinder
head
cover
as
described
in
113
Cylin-
sealant,
hold
gaskets
in
placeusing
cover
mounting
der
HeadRemoval
and
Installation
.
screws
.
"
Place
upper
timing
cover
into
position
.
Snug
down
al¡
NOTE-
screws,
without
tightening
.
Carefully
slide
out
sheet
OnM44
engines,
note
oil
supply
O-ring
and
replace
ff
metal
.
necessary
.
"
Temporarily
install
cylinder
head
cover
without
gasket
.
Insta¡¡
and
tighten
at
least
two
cylinder
head
cover
mounting
bolts
to
seat
upper
timing
chaincover
.
"
Tighten
all
upper
timing
cover
screws
.
Tightening
Torque
"
Remove
valve
cover
.
"
Cylinder
head
cover
to
cylinder
head
(M6
screws)
...
..
.
.
10
Nm
(89
ín-Ib)
-
CAMSHAFT
TIMING
CHAINS,
Fig
.
15
.
When
installing
upper
timing
chain
cover,
use
thin
sheetmetal
6-CYLINDER
(arrow)
to
protect
profile
gasket
when
installing
uppercover
.
Tightening
Torque
"
Upper
timing
chaincover
to
engine
block
or
cylinder
head
(M6
screws)
....
.
..
10
Nm
(89
in-lb)
16
.
Install
vibration
damper
while
aligning
woodruff
key
.
Hold
crankshaft
stationary
and
tighten
mounting
bolt
.
Tightening
Torques
I
CAUTION-
"
Pulley
to
vibration
damper
..
.
.
.
....
22
Nm
(17
ft-Ib)
lf
the
camshaftsare
not
properly
timed,
the
1
pis-
tons
can
contact
thevalves
.
"
Vibration
damper
tocrankshaft
M16
stretch
bolt
(always
replace)
.
330
Nm
(244
ft-Ib)
CAMSHAFT
TIMINGCHAINS,
6-CYLINDER
20
.
Installation
of
remaining
parts
is
reverse
of
removal
.
When
installing
thermostat,
make
sure
arrow
or
vent
hole
faces
up
.
Refill
cooling
system
as
described
in
170
Radiator
and
Cooling
System
.
Tighteníng
Torques
"
Coolant
drain
plug
to
cylinder
block
.
..
.
.
.
...
.
..
.....
25
Nm
(18
ft-Ib)
"
Radiator
cooling
fan
to
coolant
pump
.
..
.
...
...
..
.....
40
Nm
(30
ft-Ib)
"
Radiator
drain
screw
to
radiator
....
2
.5
Nm
(22
in-lb)
Camshaft
timing
chainremovalon
6-cylinder
engines
re-
quires
that
you
Rmove
the
engine
oil
pan
by
raising
the
en-
gine
and/or
lowering
the
front
suspension
crossmember
.
Special
BMW
service
tools
are
needed
for
timing
chain
re-
moval
and
installation
procedures
.
The
special
tools
assure
proper
timing
of
the
valvetrain
.
Precise
marks
to
setthe
timing
on
the
camshafts
arenot
provided
for
reassembly
.
Read
the
procedures
through
before
beginning
thejob
.
Page 103 of 759
Camshaft
timing
chains,
removing
(6-cylinder
engines)
1
.
Disconnect
negative
(-)
cable
from
battery
.
CA
UTION-
Disconnecting
the
battery
may
erase
fault
codes)
stored
in
control
module
memory
.
Check
for
fault
codes
using
special
BMW
diagnostic
equipment
.
2
.
Drain
engine
coolant
.
Drain
engine
block
by
removing
block
drain
.
Remove
radiator
cooling
fan
shroud
and
cooling
fan
.
See170
Radiator
and
Cooling
System
.
.
WARNING
-
Allow
the
engine
to
cool
before
openingor
draining
the
system
.
CAUTION-
Radiator
fan
has
left
hand
threads
.
NOTE-
The
block
drain
plug
is
located
on
the
exhaust
side
of
the
engine,
below
cylinder
no
.
4
.
3
.
Drain
engine
oíl
andremove
oil
pan
.
See
119
Lubrica-
tion
System
.
4
.
Remove
alternator
cooling
duct
.
5
.
Remove
two
large
coolant
hoses
from
thermostat
housing
.
Remove
engine
lifting
bracket
and
thermostat
housing
from
front
of
cylinder
head
.
6
.
Loosen
bolts
for
coolant
pump
pulley
.
Then
remove
drive
belts
for
alternator
andA/C
compressor
.
See
020
Maintenance
Program
.
Remove
coolant
pump
pulley
.
Fig
.
16
.
NOTE-
OnM50
engines
with
a
two-roller
drive
belt
tensioner,
remove
the
upper
rollerto
access
thetensioner
mount-
ing
bolts
.
NOTE-
Make
note
of
the
arrangement
of
the
rubber
insulators
when
removing
the
cylinder
head
cover
mounting
bolts
.
CAMSHAFT
TIMING
CHAIN
117-
7
Fig
.
16
.
Drive
belt
tensioner
mounting
bolts
(arrows)
.
B11055
7
.
Remove
drive
belt
tensioner
from
front
of
engine
.
See
Fig
.
17
.
1992-1995
M50
engine
speed
sensor
on
timing
cover
(ar-
row)
.
10
.
Unclip
andremove
baffle
cover
from
above
intake
cam-
shaft
.
See
Fig
.
18
.
11
.
On
1992
engines
:
Remove
upper
timing
chain
cover
from
front
of
cylinder
head
.
See
Fig
.
19
.
8
.
Remove
engine
speed
sensor
from
lower
timing
chain
12
.
Loosen
spark
plugs
.
See
120
Ignition
System
.
cover,
if
applicable
.
See
Fig
.
17
.
13
.
Set
engine
to
approximate
TDC
by
rotating
in
normal
9
.
Remove
cylinder
head
cover
.
See
113
Cylinder
Head
operating
direction
until
camshaft
lobes
at
cylinder
no
.
Removal
and
Installatíon
.
1
are
facing
each
other
.
See
Fig
.
20
.
14
.
Set
engine
to
TDC
by
aligning
"0/T'
mark
(0°TDC)on
front
vibration
damper
with
cast
bosson
lower
timing
chain
cover
.
See
Fig
.
21
.
15
.
Remove
vibration
damper
mounting
bolts
and
remove
vibration
damper
and
pulley
.
See
Fig
.
22
.
CAMSHAFT
TIMING
CHAINS,
6-CYLINDER
Page 107 of 759
9)
B11126
Fig
.
29
.
Lower
timing
chain
cover
mounting
bolts
(arrows)
anddowel
locations
(A)
.
Coolant
hose
fitting
B
is
replaced
by
coolant
pipe
pressure
fitting
in
later
models
.
28
.
Remove
remaining
Torx
bolt
from
timing
chain
guide
.
See
Fig
.
30
.
Fig
.
30
.
Timing
chainguide
mounting
bolt(A)
.
CAMSHAFT
TIMING
CHAIN
117-
11
29
.
Lift
primary
chain
sprocket
off
exhaust
camshaft
and
remove
chain
.
NOTE-
"
If
any
of
the
sprockets
are
being
replaced
due
to
wear,
the
chain
should
also
be
replaced
.
"
If
the
crankshaft
sprocket
requires
replacement,
the
oil
pump
drive
sprocket
and
chain
must
be
removed
as
described
under
119
Lubrication
System
.
Camshaft
timing
chains,
installing
(6-cylinder
engines)
Inspecttiming
chainsprockets
.
Sprockets
that
haveworn
or
missing
teeth
should
be
replaced
.
Inspect
guide
rail
and
ten-
sioner
rail
for
deep
grooves
caused
by
chain
contact
.
Replace
any
parí
that
is
worn
.
The
procedure
outlined
below
assumes
that
the
camshafts
and
the
crankshaft
are
locked
in
the
TDC
installation
position
with
special
tools
(shown
earlier
in
Fig
.
23
and
Fig
.
24)
.
NOTE-
NOTE-
On
pre-VANOS
engines
(engines
built
up
to
8-92),
the
"
The
timing
chain
cover
can
be
removed
with
the
cool-
camshaft
locking
tool
(Fig
.
24)should
be
raised
upon
ant
pump
installed
.
eitherside
by
3mm
(use
feeler
gauge
or
dril¡
bits)
.
Be
sure
the
clamping
bolts
on
tool
are
loose
and
thecenter
"
Use
care
when
removing
the
chain
cover
from
the
of
the
tool
is
contacting
the
cylinder
head
surface
.
This
coolant
pipe
or
hose
at
the
rearof
the
cover
.
service
campaign
helps
improve
idle
characteristics
by
reducing
valve
overlap
.
1
.
Install
primary
timing
chain
to
crankshaft
sprocket
and
tie
it
up
through
cylinder
head
opening
.
2
.
Using
new
gaskets
and
coolant
pipe
O-ring
;
insta¡¡
low-
ertiming
chain
cover
:
"
Drive
timing
cover
doweis
inuntil
they
just
protrude
slightly
from
sealing
surface
.
"
Apply
a
small
bead
of
silicon
sealer
(3-Bond
1209
©
or
equivalent)
to
corners
of
cylinder
head
where
timing
cover
meets
cylinder
head
and
engine
block
.
"
Tap
cover
into
position
to
engage
doweis
.
"
Install
mounting
bolts
hand
tight,
including
two
outer
Torx
bolts
from
above
.
"
Drive
doweis
in
flush
to
front
of
cover
.
"
Tighten
cover
mounting
bolts
alternately
and
in
stages
.
Tightening
Torque
"
Lower
timing
cover
to
cylinder
block
M7
................
...
..
.
.....
15
Nm
(11
ft-Ib)
M8
.............
.
.
...
.........
20
Nm
(15
ft-Ib)
3
.
Insta¡¡
oil
pan
using
a
new
gasket
.
See
119
Lubrication
Systern
.
CAMSHAFT
TIMINGCHAINS,
6-CYLINDER
Page 110 of 759
117-
1
4
CAMSHAFT
TIMING
CHAIN
22
.
Installation
of
remaining
parts
is
reverse
of
removal,
When
theengine
is
running,
the
piston
housing
is
supplied
noting
the
following
:
with
pressurized
engine
oil
.
At
idie,
the
solenoid
isin
the
off
"
When
installing
thermostat,
make
sure
arrow
or
vent
position
(de-energized)
and
valve
timing
is
maintained
in
the
hole
faces
up,
if
applicable
.
normal
position
:
When
the
solenoid
is
energized,
the
gear
cup
"
Refill
cooling
systemas
described
in
170
Radiator
piston
moves
forward
to
advance
the
camshaftby
a
maximum
and
Coming
System
.
of
12
.5
.
"
Install
oil
pan
as
described
in
119
Lubrication
Sys-
tem
.
"
Fill
engine
with
oil
and
install
a
new
oil
filter
as
de-
scribed
in
020
Maintenance
Program
.
"
Insta¡¡
ground
wires
at
cylinder
head
cover
mounting
studs
and
at
front
of
cylinder
head
and
thermostat
housing,
where
applicable
.
VANOS
system
operation,
testing
Tightening
Torques
There
are3
special
tools
required
to
check
VANOS
opera-
"
Coolant
drain
plugto
cylinder
block
.
.
25
Nm
(18
ft-Ib)
tion
;
an
electricaltest
lead
(BMW
special
tool
no
.
12
6
410),
an
"
Radiator
cooling
fan
to
coolant
pump
.
40
Nm
(30
ft-Ib)
air
line
fitting
(BMW
special
tool
no
.
11
3
450),
and
a
crank-
"
Radiator
drain
screw
to
radiator
...
.
2
.5
Nm
(22
in-Ib)
shaft
TDC
locking
tool
(BMW
special
tool
no
.
112
300)
.
"
Upper
timing
chaincover
to
cylinder
head
The
test
leal
is
used
to
power
the
solenoid,
simulating
the
M6
nut
...
.....
.............
..
.
10
Nm
(89
in-lb)
ground
signal
from
the
DME
control
unit
.
The
air
line
fitting
M8
bolt
.....
....
.
.
.............
22
Nm
(17
ft-Ib)
takes
the
place
of
the
oil
supply
line
fitting
to
simulate
oil
Ares-
"
VANOS
control
unit
to
cylinder
head
sure
.
The
locking
tool
positions
and
locks
the
crankshaft
at
M6
nut
.........
..
..
.
..........
10
Nm
(89
in-lb)
TDC,
cylinder
no
.
l.
M8
bolt
........
...
.............
22
Nm
(17
ft-Ib)
"
VANOS
oil
supply
pipe
to
VANOS
control
unit
1
.
Remove
alternator
cooling
air
duct
.
banjo
bolt
.......
..
..
.
..........
32
Nm
(24
ft-Ib)
VANOS
(VARIABLE
VALVE
TIMING)
3
.
Remove
top
plastic
enginecovers
.
Disconnect
ignition
coil
harness
connectors
fromcofs
.
Remove
ignition
1993
and
later
6-cylinder
engines
are
equipped
with
a
vari-
coils
.
able
valve
timing
system
called
VANOS
.
This
system
is
con-
trolled
by
the
engine
management
system
and
dynamically
4
.
Remove
cylinder
head
cover
mounting
bolts
and
re-
adjusts
intake
camshaft
timing
based
on
engine
load,
engine
move
cylinder
head
cover
.
Unclip
andremove
oil
baffle
speed
and
engine
temperature
.
cover
from
above
intake
camshaft
.
See
113
Cylinder
Head
Removal
and
installation
.
The
main
components
of
the
VANOS
system
are
the
control
unit
with
piston
housing
and
integral
spool
valve,
and
the
mod-
ified
intake
camshaft
.
See
Fig
.
35
.
VANOS
(VARIABLE
VA
LVE
TIMING)
Fig
.
35
.
VANOS
control
unit
with
modified
intake
camshaft
.
B11001
WARNING
-
Special
BMW
service
tools
are
required
to
check
and
repair
the
VANOS
System
.
Read
theproce-
dures
through
before
beginning
the
job
.
2
.
Disconnect
crankcase
ventilation
hose
fitting
from
cyl-
inder
head
cover
.
NOTE-
Note
the
arrangement
of
the
cylinder
head
cover
bolt
insulators
and
gaskets
during
removal
.
5
.
Set
engine
to
approximate
TDC
by
rotating
in
normal
operating
direction
until
camshaft
lobes
at
cylinder
no
.
1
are
facing
each
other
.
See
Fig
.
20
.
6
.
Set
engine
to
TDC
by
aligning
"0/T"
mark
(0°TDC)on
front
vibration
damper
withcast
boss
on
lower
timing
chain
cover
.
See
Fig
.
21
.
7
.
Lock
crankshaft
in
position
by
inserting
BMW
special
tool
no
.
11
2
300
through
transmission
bellhousing
and
into
hole
in
flywheelor
driveplate
.
See
Fig
.
36
.
NOTE-
Confirm
that
the
locking
tool
has
been
correctly
in-
stalled
by
trying
to
rotatethe
crankshaft
.
Page 114 of 759
117-
1
8
CAMSHAFT
TIMING
CHAIN
CAUTION-
It
is
crítical
that
the
exhaustcamshaft
sprocket
be
turned
only
the
mínimum
amount
necessary
to
engage
the
gear
cup
.
If
this
procedure
is
done
ín-
correctly,
the
VANOS
system
may
not
function
throughout
íts
full
range
.
NOTE-
As
the
control
unit
isinstalled,
the
secondary
sprockets
will
rotate
in
the
counterclockwise
direction
.
It
may
be
necessary
to
guide
sprockets
counterclockwise
as
the
control
unit
is
installed
.
8
.
On
cars
built
from3/95
:
Use
a
spanner
tool
(See
Fig
.
39
.),
turn
exhaust
sprocket
counterclockwise
(as
víewed
from
front
of
engine)
only
enough
to
mesh
gear
cup
splines
with
camshaftgear
.
Slowly
push
VANOS
control
unit
towards
camshaft
until
it
is
fully
seated,guiding
chains
in
counterclockwise
direction
.
CA
UTION-
Ensure
that
the
first
available
tooth
engages
.
9
.
Install
and
tightencontrol
unit
nuts
and
bolt
.
10
.
Connect
harness
connector
to
VANOS
solenoid
.
Using
new
seals,
insta¡¡
oil
line
fitting
.
Tightening
Torques
"
VANOS
control
unitto
cylinder
head
M6
nut
.....
..
..
.
.
.............
10
Nm
(89
in-lb)
M8
bolt
.....
.
.
.
.
..
.............
22
Nm
(17
ft-Ib)
"
VANOS
oil
supply
line
to
control
unit
.
32
Nm
(24
ft-Ib)
11
.
Slowlyunlock
and
release
secondary
chain
tensioner
.
12
.
Preloadprimary
chain
by
tightening
BMW
special
tool
no
.
112
240
(dummy
chain
tensioner)
to
1
.3
Nm
(11
in-
lb)
.
Then
tighten
exhaust
camshaft
sprocket
mounting
bolts
alternately
in
two
stages
.
Tightening
Torque
"
Secondarytiming
chain
sprockets
to
camshafts
(Tora
boits)
Stage
1
..
...............
...
.
.
...
5
Nm
(44
in-lb)
Stage
2
..
...............
...
.
.
..
22
Nm
(17
ft-Ib)
VANOS
(VARIABLE
VALVE
TIMING)
13
.
Remove
flywheel
locking
tool
from
transmission
bell-
housing
.
Remove
camshaft
locking
tool
from
rear
of
cylinder
head
.
14
.
Turn
engine
over
by
hand
at
least
two
fui¡
crankshaft
ro-
tations
.
Reinstall
camshaft
locking
tool
and
flywheel
locking
toolto
make
sure
all
adjustments
are
correct
.
If
settings
are
correct,
remove
locking
tools
.
15
.
Remove
BMW
special
tool
112
420
(dummy
chain
ten-
sioner)
from
side
of
cylinder
head
.
Install
primary
chain
tensioner
so
that
cutout
in
tensioner
piston
engages
chain
rail
.
See
Fig
.
34
.
Using
new
seals,
install
and
tighten
access
plugs
in
VANOS
control
unit
.
Tightening
Torque
"
Access
plugs
to
VANOS
control
unit
.
..
.
.....
.
..
...
50
Nm
(37
ft-lb)
"
Primary
timing
chain
tensioner
plug
to
tensioner
sleeve
M50/S50USengine
.
.
..
.
.
...
.
...
..
50
Nm
(37
ft-Ib)
M52/S52US
engine
...
..
...
...
...
40
Nm
(30
ft-Ib)
16
.
Install
oil
baffle
cover
above
intake
camshaft
.
Install
three
cylinder
head
covermounting
studs
to
rear
of
head
.
Instali
cylinder
head
cover
.
Tightening
Torque
"
Cylinder
head
cover
to
cylinder
head
(M6
screws)
......
10
Nm
(89
in-Ib)
17
.
Installationof
remaining
parts
is
reverse
of
removal
.
NOTE-
Be
sure
to
install
the
ground
wíres
at
the
cylinder
head
cover
mounting
studs
and
at
the
front
of
the
cylinder
head,
if
applicable
.
Page 115 of 759
119
Lubrication
System
LUBRICATION
SYSTEM
119-1
GENERAL
.
.
.
.
.
.
...
.
.
.
.
.
.
.
...,
,
...
.
.
.
.
119-1
OH
pan,
removing
and
installing
(6-cylinder
engine,
1992
models)
.
.
.
.
.
.
.
.
.
119-4
TROUBLESHOOTING
.
.
.
.
.
.
...
.
.
.
.....
.
119-1
Oil
pan,
removing
and
installing
Oil
pressure,
checking
.
.
.
.
.
.
...
.
.
.
.
.
.
.
.
.
119-1
(6-cylinder
engine,
1993
and
later
models)
.119-6
Oil
pressure
warning
system,
testing
.
.
.
.
.
.
.
119-2
OIL
PUMP
.
.......
.
.............
.119-8
OIL
PAN
.
.
.
.
.
.....
.
.
.
.
.
......
.
.
.
.
.
.
.
..
119-2
Oil
pump,
removing
and
installing
Oil
pan,
removing
and
installing
(4-cylinder
engine)
.
.
.
...
.
..........
.
.
.119-8
(4-cylinder
engines)
.
.
...
.
....
.
.
.
.
.
.
.
..
119-2
Oil
pump,
removing
and
installing
(6-cylinder
engine)
.
.
.....
.
.........
.
.119-10
GENERAL
Oil
pressure,
checking
The
oil
pan
and
the
oil
pump
can
be
removed
with
theen-
gine
installed,
although
engine
liftinglsupport
equipment
is
necessary
.
NOTE-
Oil
change
procedure
and
oil
filter
replacement
are
covered
in
020
Maintenance
Program
.
Al¡
engines
are
equipped
with
an
oil
pressure
warning
sys-
tem
to
help
prevent
engine
damage
.
Other
safety
features
in-
clude
:
"
A
filter
bypass
to
provide
lubrication
should
the
oil
filter
become
clogged
.
"
An
oil
pump
pressure
relief
valve
to
prevent
excessive
system
pressure
.
TROUBLESHOOTING
The
lubrication
warning
system
consists
of
an
oil
pressure
switch
mounted
in
the
oil
circuit
and
an
instrument
panel
warn-
ing
light
.
CAUTION-
If
the
red
oil
pressurewarning
light
comes
on
or
flashes
on
while
driving,
always
assume
that
the
oil
pressure
is
low
.
To
perform
an
oíl
pressure
test,
BMW
specifies
special
tools
that
attach
to
thetop
of
the
oíl
filter
housing
.
The
following
pro-
cedure
works
well
using
standard
automotive
oil
pressure
testing
equipment
attached
to
the
oil
pressure
switch
port
in
the
engine
.
In
some
engines,
however,
access
tothis
port
may
be
extremely
restricted
.
1
.
Disconnect
harness
connector
from
oil
pressure
switch
andremove
switch
.
See
Fig
.
1
.
NOTE-
Thoroughly
clean
around
the
oil
pressure
switchbefore
removing
it
.
Fig
.
1
.
Oil
pressure
switch
location
on
M50
engine
(arrow)
.
TROUBLESHOOTING