wheel bolts BMW 318i 1997 E36 Workshop Manual
[x] Cancel search | Manufacturer: BMW, Model Year: 1997, Model line: 318i, Model: BMW 318i 1997 E36Pages: 759
Page 7 of 759
Please
read
these
warnings
and
cautions
before
proceeding
with
maintenance
and
repair
work
.
WARNING-
"
Friction
materials
(such
as
brake
pads
or
shorts
or
clutchdiscs)
contain
asbestos
fibers
or
other
friction
materials
.
Do
notcreate
"
See
also
Cautionson
page
viü
dustby
grinding,
sanding,
orby
cleaning
with
compressed
air
.
"
Some
repairs
may
be
beyond
your
capability
.
If
you
lack
the
Avoid
breathing
dust
.
Breathing
any
friction
material
dust
can
lead
skills,
tools
and
equipment,
or
a
suitable
workplace
for
any
proce-
to
serious
diseases
and
may
result
in
death
.
duredescribed
in
this
manual,
we
suggestyou
leave
such
repairs
"
Batteries
give
off
explosive
hydrogen
gas
during
charging
.
to
an
authorized
BMW
dealer
service
department
or
other
quali-
Keep
sparks,
lighted
matches
and
open
flame
away
from
the
top
fied
shop
.
of
the
battery
If
hydrogen
gas
escaping
from
the
cap
vents
is
"Do
not
re-use
any
fasteners
that
are
worn
or
deformed
in
normal
ignited,
it
will
ignite
gas
trapped
in
the
cells
and
cause
the
battery
use
.
Many
fasteners
are
designed
to
be
used
only
once
and
to
explode
.
become
unreliable
and
may
fail
when
used
a
second
time
.
This
"
Connect
and
disconnect
battery
cables,
jumper
cablesora
bat-
includes,
but
is
not
limited
to,
nuts,
bolts,
washers,
self-locking
nuts
or
bolts,
circlips
and
cotterpins
.
Always
replace
these
fasteners
with
new
parts
.
"Do
not
quick-charge
the
battery
(for
boost
starting)
for
longer
"
Never
work
under
a
lifted
car
unless
it
is
solidly
supportedon
than
one
minute
.
Wait
at
least
one
minute
before
boosting
the
bat-
stands
designed
for
the
purpose
.
Do
not
support
a
car
on
cinder
tery
a
second
time
.
blocks,
hollow
tiles
or
other
props
that
may
crumble
under
contin-
uous
load
.
Never
work
under
acar
that
is
supported
solely
by
a
"Do
not
allow
battery
charging
voltage
to
exceed
16
.5
volts
.
If
the
jack
.
Never
work
under
thecar
while
the
engine
is
running
.
battery
beginsproducing
gas
or
boiling
violently,
reduce
the
charg-
ing
rate
.
Boosting
a
sulfated
battery
at
a
high
charging
rate
can
"
If
you
are
going
to
work
under
acar
on
the
ground,
make
sure
cause
an
explosion
.
that
the
ground
is
level
.
Block
the
wheels
to
keep
the
carfrom
roll-
ing
.
Disconnect
the
battery
negative
(-)
terminal
(ground
strap)to
"
The
air-conditioning
system
is
filled
with
chemical
refrigerant,
prevent
others
from
starting
thecar
while
youare
under
it
.
which
is
hazardous
.
TheA/C
system
should
be
servicedonly
by
trained
technicians
using
approved
refrigerant
recovery/recycling
"
Never
run
the
engine
unless
the
work
area
is
well
ventilated
.
equipment,
trained
in
related
safetyprecautions,
and
familiar
with
Carbon
monoxide
kills
.
regulations
governing
the
discharging
and
disposal
of
automotive
"
Finger
rings,
bracelets
and
other
jewelry
shouldbe
removed
so
chemical
refrigerants
.
tery
charger
only
with
the
ignition
switched
off,
to
prevent
sparks
.
Do
not
disconnect
the
battery
while
the
engine
is
running
.
that
theycannot
cause
electrical
shorts,
get
caught
in
running
"
Do
not
expose
any
partof
the
A/Csystem
to
high
temperatures
machinery,
or
be
crushed
by
heavy
parts
.
suchas
open
flame
.
Excessiveheat
will
increase
system
pressure
"
Tie
long
hair
behind
your
head
.
Do
not
wear
a
necktie,
a
scarf,
and
may
cause
the
system
to
burst
.
loose
clothing,
or
a
necklace
when
you
work
near
machine
tools
or
"
Some
aerosol
tire
inflators
are
highly
flammable
.
Be
extremely
running
engines
.
If
your
hair,
clothing,
or
jewelry
were
to
get
caught
cautious
when
repairing
a
tire
that
may
havebeen
inflated
using
in
the
machinery,
severe
injury
could
result
.
an
aerosol
tire
inflator
.
Keep
sparks,
open
flame
or
other
sources
"
Do
not
attempt
to
work
onyourcar
if
you
do
not
feel
well
.
You
of
ignition
away
from
the
tire
repair
area
.
Inflate
and
deflate
the
tire
increase
the
danger
of
injury
toyourself
and
others
if
you
are
tired,
at
least
four
times
before
breaking
the
bead
from
therim
.
Com-
upset
or
have
takenmedication
or
any
other
substance
that
may
Pletely
remove
the
tire
from
the
rim
beforeattempting
any
repair
.
keep
you
from
being
fully
alert
.
"
Illuminate
your
work
areaadequately
but
safety
.
Use
a
portable
safety
light
for
working
inside
or
under
thecar
.
Make
surethe
bulb
is
enclosedbya
wire
cage
.
The
hot
filament
of
an
accidentally
bro-
ken
bulb
can
ignite
spilled
fuel
or
oil
.
"
Catch
draining
fuel,
oil,
orbrake
fluid
in
suitable
containers
.
Do
not
use
food
or
beverage
containers
that
mightmislead
someone
into
drínking
from
them
.
Store
flammable
fluids
away
from
fire
haz-
ards
.
Wipe
up
spills
at
once,
but
do
not
store
the
oily
rags,
which
can
ignite
and
burn
spontaneously
.
"
Always
observe
good
workshop
practices
.
Wear
goggles
when
youoperate
machine
tools
or
work
with
battery
acid
.
Gloves
or
other
protectioeclothing
should
be
worn
whenever
thejob
requires
working
with
harmful
substances
.
"
Greases,
lubricants
and
other
automotive
chemicals
contain
toxic
substances,
many
of
which
are
absorbed
directly
through
the
skin
.
Read
the
manufacturer's
instructions
and
warnings
carefully
.
Use
hand
andeye
protection
.
Avoid
direct
skin
contact
"
Cars
covered
by
this
manual
are
equipped
with
a
supplemental
restraint
system
(SRS),
that
automatically
deploys
an
airbag(s)
in
theevent
of
a
frontal
ímpact
.
The
airbag(s)
is
inflated
byan
explo-
sive
device
.
Handled
improperly
or
without
adequate
safeguards,
can
be
accidently
activated
and
cause
serious
injury
.
"
The
ignition
system
produces
high
voltages
that
can
be
fatal
.
Avoid
contact
with
exposed
terminals
and
use
extreme
care
when
working
ona
car
with
the
engine
running
or
the
ígnition
switched
on
.
"
Place
jack
stands
only
at
locations
specified
bymanufacturer
.
The
vehicle
lifting
jacksupplied
with
the
vehicle
is
intended
for
tire
changes
only
.
A
heavy
duty
floor
jack
shouldbe
used
to
lift
vehicle
before
installing
jack
stands
.
See
010
Fundamentals
for
theDo-
.
it-Yourself
Owner
.
"
Battery
acid
(electrolyte)
can
cause
severeburns
.
Flush
contact
area
with
water,
seek
medical
attention
.
"
Aerosolcleaners
and
solvents
may
contain
hazardous
ordeadly
vapors
and
are
highly
flammable
.
Use
only
in
a
wellventilated
area
.
Do
not
use
on
hot
surfaces
(engines,
brakes,
etc
.)
.
"
Disconnect
the
battery
negative
(-)
terminal
(Ground
strap)
"
Do
not
remove
coolant
reservoir
or
radiator
cap
with
theengine
whenever
you
work
on
the
fuel
system
orthe
electrical
system
.
Do
hot
.
Danger
of
bums
and
engine
damage
.
not
smoke
or
work
near
heaters
or
other
fire
hazards
.
Keep
an
approved
fire
extinguisher
handy
.
continued
on
next
page
vii
Page 19 of 759
Fig
.
16
.
Multimeter
or
Digital
Volt/Ohmmeter
(DVOM)
.
BMW
Special
Tools
FUNDAMENTALS
FOR
THE
DO-ITYOURSELF
OWNER
010-11
0012223
Some
of
the
more
challenging
repairs
covered
in
this
manual
cal¡
for
the
use
of
BMW
special
tools
.
This,
however,
does
not
automatically
mean
that
thejob
is
too
complicated
or
out
of
reach
of
thenovice
.
Many
of
the
BMW
special
tools
mentioned
in
this
manual
are
simplythe
best
thing
to
use
to
do
thejob
correctly
.
In
these
cas-
es,
the
tool
is
identified
with
a
BMW
part
number
.
See
your
au-
thorized
BMW
dealer
parts
department
for
information
on
how
to
order
special
tools
.
There
are
some
jobs
for
which
expensive
special
tools
are
essential,
and
not
a
cost-effective
purchase
for
one-time
repair
by
the
do-it-yourself
owner
.
This
manual
includes
such
repairs
for
the
benefit
of
these
with
the
necessary
experience
and
ac-
cess
to
tools
.
For
the
do-it-yourselfer,
the
need
for
special
tools
is
noted
in
the
text,
and
whether
or
not
BMW
dealer
service
is
recommended
.
EMERGENCIES
Changing
a
Tire
Stop
thecar
onas
flat
a
surface
as
possible,
in
a
place
where
you
canbe
easily
seen
by
other
drivers
.
Avoid
stopping
just
over
the
crest
of
a
hill
.
Turnon
the
emergency
flashers,
and
set
out
(lares
or
emergency
markers
well
behindthecar
.
Chock
the
wheel
(wheel
chock
located
in
trunk)
diagonally
opposite
to
the
one
being
changed
.
Passengers
shouldgetout
of
thecar
and
stand
well
away
from
the
road
.
Remove
the
spare
tire
from
the
spare
tire
storage
tray,
as
described
later
.
WARNING
-
If
a
tire
goes
fíat
while
drtving,
pull
well
off
the
road
.
Changing
a
tire
ona
busy
street
or
highway
is
very
dangerous
.
If
necessary,
drive
a
short
distance
on
the
fíat
tire
to
get
to
a
sale
place
.
tt
is
much
better
to
ruin
a
tire
or
rim
than
to
risk
being
hit
.
Take
the
jack
and
tools
from
the
tool
area
beneath
the
trunk
mat
.
Remove
the
spare
tire
from
the
tire
storage
tray
.
Loosen
the
wheel
bolts
while
the
car
is
on
the
ground,
but
leave
them
a
little
snug
.
Placethe
jack
in
the
lifting
point
nearest
the
wheel
beingchanged,
lifting
points
are
shown
in
Fig
.
1
and
Fig
.
2)
.
Use
a
board
to
provide
a
firm
footing
for
the
jack
if
the
ground
is
soft
.
Raise
the
car
only
lar
enough
so
that
the
wheel
is
fully
off
the
ground
and
then
remove
the
wheel
nuts
and
the
wheel
.
Insta¡¡
the
spare
wheel
.
Install
the
wheel
nuts
and
tighten
them
by
hand,
then
lower
the
car
.
With
all
wheelson
the
ground,
fully
tighten
the
nuts
in
a
crisscross
pattern
.
Torque
the
wheel
nuts
when
installing
the
wheel
.
Check
the
inflation
pres-
sure
of
the
spare
tire
.
Tightening
torques
"
Wheel
to
wheel
hub
.....
100
t
10
Nm
(74
t
7
ft-Ib)
Car
Will
Not
Start
If
the
engine
tucos
over
slowly
or
not
at
all,
especially
on
cold
mornings,
the
battery
may
not
be
sufficiently
charged
.
Jump-
starting
the
battery
from
another
car
may
help
.
WARNING
-
On
carswith
manual
transmisston,
push
starting
(or
tow
starting)
acar
ts
not
recommended
by
BMW
.
NOTE-
Be
sure
to
read
the
cautions
underJump
Starting
Car
prior
boosting
a
low
battery
.
Fatlure
to
followthe
cau-
tions
may
result
in
damage
to
the
electronic
compo-
nents
in
the
car
.
If
the
engine
is
turning
over
at
normal
speed
with
the
starter
motor,
the
battery
and
starter
are
fine
.
Check
to
make
sure
that
there
is
fuel
in
the
tank
.
Do
not
rely
on
the
fuel
gauge,
it
may
be
faulty
.
Instead,
remove
the
gas
filler
cap
and
rock
thecar
.
If
there
is
gas
in
the
tank,
you
should
hear
a
sloshing
sound
at
the
filler
neck
.
lf
there
is
plenty
offuel
in
the
tank,
see100
Engine-
General
for
in-depth
diagnostics
and
troubleshootingproce-
dures
.
EMERGENCIES
Page 27 of 759
Table
b
.
Inspection
I
Service
MAINTENANCE
PROGRAM
020-5
ad
d
d
ID
a
r
c
d
a~
;v
a
:
Q~
wE
y
a
r
E
R
:
L-
0
Maintenance
ítem
1
z
3
~
c
d
Engine
compartment
maintenance
Change
oil
and
oil
filter
.
Check
brake/clutch
fluid
leve¡
Check
battery
acid
leve¡
and
correct
asnecessary
.
Repair
Group
121
Check
engine
coolant
level
and
anti-freeze
protection
and
addasnecessary
.
Inspect
for
cooling
system
leaks
.
Repair
Group
170
Lubricate
throttie
linkage
Under
car
maintenance
Check
transmission
for
externa¡
leaks
.
Check
manual
transmission
oil
leve¡
andadd
asnecessary
.
Repair
Group
230
Check
final
drive
lubricant
and
addasnecessary
.
Check
fue¡
tank,
fuel
lines,
and
all
connections
for
leaks
.
Inspect
exhaust
system
.
Repair
Group
180
Check
steeringrack
and
steeringlinkages
.
Check
power
steering
system
for
leaks
.
Check
(luid
leve¡
.
Repair
Group
320
Inspect
brake
system
for
damaged
hoses
and
fines,
leaks
or
damage
.
Remove
calipers
and
check
brake
pad
wear
.
Check
brake
rotors
for
scoring
damage
.
Repair
Group
340
Check
parking
brake
operation,
adjust
cable
if
necessary
Repair
Group
340
Inspect
front
and
rear
suspension,
including
wheel
bearings,
for
play
.
Repair
Group
320/330
Inspect
wheelsand
tires,
including
spare,
check
tire
pressure
and
condition
Body
and
Interior
Maintenance
Lubricate
door
hinges
and
hood
latch,
hood
hinges
Check
headlight
and
driving
light
aiming
and
adjust
as
necessary
.
Check
operation
of
headlights,
parking
lights,
back-up
fights,
licenseplate
lights,
interior
lights,
glove
box
light,
engine
compartment
light,
trunk
light,
instrument
panel
lights,
turnsignals,
emer-gency
flashers,
stop
fights,
horas,
headlight
flasher
and
dimmer
switch
Replace
ventilation/A/C
micro-filter
.
Check
functionof
air
conditioning
.
Repair
Group
640
Check
function
of
seat
belts
.
Repair
Group
720
Check
tightness
of
mountfng
screws
on
airbag
front
crash
sensors
(Airbag
I)
.
Repair
Group
721
Check
windshield
washer
fluid
leve¡
and
concentration,
add
as
necessary
Check
operation
of
washer
system
.
Check
condition
of
wiperblades
.
Repair
Group
611
Tighten
nuts
and
bolts
for
door
locks
and
striker
plates
Replace
batteries
for
alarm/remote
control
in
masterkey(where
applicable)
.
Road
Test
Check
braking
performance,
steering,
HVAC,
manual
or
automatic
transmission,
and
mirrors
Service
Interval
Reset
Reset
service
indicator
using
specialreset
tool
.
MAINTENANCE
TALES
Page 70 of 759
113-4
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
20
.
Disconnect
main
engine
wiring
harness
connector
.
La-
bel
and
disconnect
harness
connectors
for
crankshaft
and
camshaft
sensors
.
See
Fig
.
8
.
0012504
Fig
..
Crankcase
vent
valve
(A),
camshaft
and
crankshaft
sensor
harness
connectors
(B),
locating
bushings
(C),
main
engine
wiring
harnessconnector
(D)
.
M44
engine
shown
.
NOTE-
Early
engines
do
not
havea
maín
disconnect
at
the
lower
intake
manifold
harness
.
lf
necessary,
remove
the
cable
ducting
bolts
and
set
harness
ducting
aside
.
21
.
Remové
lower
section
of
intake
manifold
.
"
Remove
Y
shaped
supportbracket
from
underside
of
manifold
.
(See
Fig
.
6
.)
"
Unbolt
support
brackets
from
alternator
and
starter
.
"
Remove
nuts
holding
manifold
to
cylinder
head
and
pull
manifold
back
until
harness
connectors
for
oil
pressure
switch
and
coolant
temperature
sensorare
accessible
.
Label
and
disconnect
connectors,
then
re-
move
manifold
and
set
aside
.
Timing
chains,
uncoupling
26
.
Lock
crankshaft
in
TDC
position
by
insertíng
BMW
spe-
22
.
On
M42
engines,
remove
thermostat
housing
from
up-
cial
tool
no
.
11
2
300
through
bore
and
into
hole
infly-
per
timing
chaincover
.
wheel
or
driveplate
.
See
Fig
.
11
.
23
.
On
late
M44
engines
(January
1997
and
later),
remove
NOTE-
secondary
air
injection
check-valve
from
front
of
engine
"
If
necessary,
remove
plug
from
locating
bore
in
lower
and
lay
aside
.
edge
of
bell
housing
to
insert
locking
tool
.
24
.
Remove
cylinder
identification
sensor
from
upper
tim-
ing
chaincover
.
Remove
upper
timing
chaincover
.
See
Fig
.
9
.
25
.
Set
engine
to
approximate
TDC
by
rotating
in
normal
operating
direction
until
camshaft
lobes
at
cylinder
no
.
1
are
facing
each
other
.
See
Fig
.
10
.
CYLINDER
HEAD,
4-CYLINDER
Fig
.
9
.
Upper
timing
chain
cover
bolts
(arrows)
.
Remove
secondary
air
injection
check
valve
fromhose
(A)
on
M44
engine
.
Re-
move
cylinder
identification
sensor
from
chaincover
(B)
.
0011998
Fig
.
10
.
Engine
set
to
approximate
TDC
.
Cylinder
no
.
1
camshaft
lobes
face
in
and
arrows
on
sprockets
poínt
up
(arrows)
.
"
Confirm
that
the
locking
tool
has
been
correctly
in-
stalled
by
trying
to
rotate
the
crankshaft
.
27
.
Lock
camshafts
at
TDC
by
mounting
BMW
specíal
tool
no
.
113
240
over
square
ends
of
camshafts
.
See
Fig
.
12
.
NOTE-
Check
that
tool
is
squarely
seated
on
cylinder
head
gasket
surface
.
If
necessary,
rotate
camshafts
slightly
using
an
open-end
wrench
at
hex
oncamshafts
.
Page 71 of 759
Fig
.
11
.
BMW
special
tool
no
.
11
2300
installed
through
bellhousin
and
finto
flywheel
(arrow)
tolockcrankshaft
at
TDC
.
Fig
.
12
.
BMW
special
tool
no
.
11
3
240
installed
on
rear
of
camshafts
tohold
them
at
TDC
.
(M44
engine
shown
.
Other
engínes
are
similar
.)
CAUTION-
The
camshafts
must
be
locked
in
the
TDC
position
using
the
special
service
tool,
or
equivalent,
be-
fore
removing
the
timing
chaín
.
The
tool
holds
the
camshafts
parallel
to
each
other
and
perpendicu-
larto
the
valve
covergasket
surface
.
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
113-5
6011966
28
.
Remove
hydraulic
chain
tensiones
from
right
side
ofcyl-
inder
head
.
See
Fig
.
13
.
Fig
.
13
.
Hydraulic
chain
tensioner
(arrow)
.
NOTE-
It
is
not
necessary
to
remove
the
cam
sprockets
from
the
chainuntessthese
parts
are
being
reptaced
.
tire
tie
each
sprocket
to
the
chain
to
keep
the
sprockets
timed
to
each
other
.
Keeping
the
sprockets
timed
will
símplífy
instaftation
.
uu
11999
Fig
.
14
.
Chainguide
and
guide
adjusting
sleeve
(arrow)
.
Allen-head
retaining
screwhasbeen
removed
.
Use
slotted
screwdriver
to
loosen
adjusting
sleeve
.
29
.
Remove
mounting
bolts
from
left
and
right
camshaft
sprockets
.
Then
remove
camshaft
sprockets
from
cam-
_
Cylinder
head
assembly,
removing
shafts
.
On
M44
engines,
note
orientation
of
sensor
31
.
Remove
crankshaft
locking
tool
(BMW
special
tool
no
.
wheel
.
11
2
300)
.
Usingthe
crankshaft
vibration
damper
bolt,
30
.
Remove
upper
bolt
from
left
chainguide
.
Loosen
chain
turn
engine
opposite
its
normal
direction
of
rotation
guide
adjusting
sleeve
approximately
two
turns
.
See
(counterclockwise
asviewed
from
the
front)
approxi
Fig
.
14
.
mately
45°
.
This
prevents
accidental
contact
between
valves
and
pistons
during
installation
.
CYLINDER
HEAD,
4-CYLINDER
Page 73 of 759
7
.
Lightly
lubricate
new
cylinder
head
bolts
.
Loosely
instan
bolts
and
their
washers,
then
thread
them
in
until
they
are
finger
tight
.
NOTE-
Check
that
all
washers
for
the
cylinder
head
bolts
are
in
place
before
installing
the
bolts
.
8
.
Tighten
cylinder
head
bolts
in
correct
sequence
.
See
Fig
.
17
.
UU125U2
Fig
.
17
.
Cylinder
head
bolt
tightening
sequence
for
4-cylinder
en-
gines
.
Note
oil
supply
tube
seal
(arrow)
on
M44
engine
.
WARNING
-
The
bolts
should
be
tightennd
in
three
stages
as
líst-
ed
below
.
The
final
stages
require
the
use
of
a
spe-
cial
tool
(BMW
tool
No
.
11
2
110)
ora
suitable
protractor
to
tighten
the
bolts
to
a
specified
torqueangle
.
See
Fig
.
18
.
Tightening
Torques
"
Cylinder
head
to
engine
block
(Torx
El2
M10
bolts)
Stage
1
.
.
.....
.
.
.............
30
Nm
(22
ft-Ib)
Stage
2
.
...
...
.
.
...................
..
.
+90°
Stage
3
.....
...
.
..
...................
..
+90°
9
.
Carefully
rotate
crankshaft
in
direction
of
engine
rota-
tion
and
lock
it
at
TDC
by
inserting
BMW
special
tool
no
.
11
2
300
through
transmission
bellhousing
.
See
Fig
.
19
.
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
113-
7
Fig
.
18
.
Protractor
and
pointer
being
used
to
tighten
bolts
to
specified
torqueangle
(6-cylinder
engine
shown)
.
Fig
.
19
.
BMW
special
tool
11
2
300
inserted
through
bellhousing
hole
and
finto
flywheel
(arrow)
to
lockcrankshaft
at
TDC
.
10
.
Turn
left
chainguide
adjusting
sleeve
in
until
it
just
con-
tacts
the
cylinder
head
(See
Fig
.
14
.)
.
Insert
chain
guide
retaining
screw
and
tighten
.
CAUTION-
11
.
Placechain
sprockets
with
chains
oncamshaftsso
that
Be
sure
timing
chain
does
not
bind
oncrank
gear
when
turning
crankshaft
.
arrowson
sprockets
point
up
and
elongated
holes
in
sprocketsare
centered
to
tapped
holes
in
camshafts
.
See
Fig
.
20
.
CYLINDER
HEAD,
4-CYLINDER
Page 74 of 759
113-8
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
IW?
-
L
'/~f
W
~
4r
"
-
"
;,s
1
12
.
On
M44
engine
:
Place
sensor
wheel
on
intake
cam-
shaft
sprocket
so
that
arrowon
sensor
wheel
points
up
.
13
.
Instan
and
hand-tighten
sprocket
mounting
bolts
.
CAUTION-
Different
hydraulic
chaintensioners
were
used
during
manufacture,
depending
onengine
type
.
See
Fig
.
21
.
Note
that
the
late
style
tensioner
can
be
retrofitted
to
the
earlier
engine,
so
be
sure
to
identify
the
version
of
tensioner
installed
as
insta-lation
instructions
vary
between
the
two
.
14
.
On
M42
engine
:
Disassemble
chain
tensioner
by
strik-
ing
outer
sleeve
against
a
solid
object
.
This
will
release
snap
ring
and
tensioner
will
separate
.
See
Fig
.
22
.
M42
Engine
up
and
camshaft
threaded
holes
centered
in
siotted
holes
.
CYLINDER
HEAD,
4-CYLINDER
0013024a
Outer
sl
eve
Detent
ring
Spri
g
Fig
.
22
.
Disassembled
chain
tensioner
for
M42
engine
.
15
.
On
M42
engine
:
Clamp
tensioner
piston
in
vice
(soft
jaws)
.
Slowly
compress
piston,
making
sure
detent
ring
fits
into
taper
of
outer
sleeve
.
If
necessary,
press
ends
of
detent
ring
together
.
Slowly
continuepressing
ten-
sioner
together
until
snap
ring
audibly
clicksinto
outer
sleeve
.
Measure
overall
lengthof
tensioner
to
confirm
correct
assembly
:
68
.5
mm
(2.7
in
.)
.
NOTE-
i
Snap
ring
/0
.13024
The
late-style
tensioner
on
the
M44
engíne
canbe
ret-
rofitted
to
the
M42
engine
.
Tightening
Torque
"Chain
tensioner
plug
to
cylinder
head
.....
.-~
..........
40
Nm
(30
ft-Ib)
16
.
On
M44
engíne
:
Clamp
tensioner
píston
in
vice
(soft
jaws)
and
squeeze
oil
from
it
.
Slowly
compress
piston
only
up
to
end
circlip
.
Repeat
procedure
twice
to
ensure
all
oil
is
expelled
.
See
Fig
.
23
.
17
.
Instan
hydraulic
chain
tensioner
to
cylinder
head
.
Use
a
new
sealing
washer
on
tensioner
when
installing
.
18
.
On
M42
engine
:
Unlock
chain
tensioner
by
pressing
chain
rail
against
tensioner
until
it
expands
out
.
19
.
Check
that
chain
is
free
of
slack
.
Tighten
sprocket
mounting
bolts
.
Fig
.
21
.
Two
versions
of
hydraulic
chain
tensioners
.
Original
chainten-
sioner
on
M42
engine
(top)
can
be
disassembled
.
Chain
ten
sioner
on
M44
engine
(bottom)
cannotbe
disassembled
.
Tightening
Torque
Note
differences
in
outer
sleeve
.
Also,
the
M42
tensioner
de-
"
Chain
sprocket
to
camshaft
flange
.
..
10
Nm
(89
in-lb)
tent
ring
groove
(arrow)
is
visible
when
tensioner
is
extended
.
20
.
Remove
crankshaft
locking
tool
from
bellhousing
and
camshaft
locking
tool
from
rear
of
cylinder
head
.
Page 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 83 of 759
Fig
.
44
.
Secondary
chain
sprockets
and
chain
being
installed
.
Attachsprockets
with
arrows
pointing
upand
elongated
holes
cen-
tered
.
CYLINDER
HEAD
REMOVAL
AND
INSTALLATION
113-17
Spring
17
plate
0012543
Fig
.
45
.
VANOS
spring
plate
and
thrust
washerson
later
engines
.
14
.
Insta¡¡
BMW
special
tool
no
.
11
3
390
into
primary
tim-
ing
chain
tensioner
sleeve
.
Thread
tool
in
finger
tight
until
siack
is
removed
from
chain
.
NOTE-
BMW
special
tool
no
.
11
3
390
is
a
dummy
primary
chain
tensioner
and
simulatesthe
function
of
the
ten-
sioner
.
15
.
Insta¡¡
VANOS
unit
as
described
in
117
Camshaft
Tim-
ing
Chain
.
CAUTION-
Special
ínstallation
instructions
apply
when
mounting
the
VANOS
unit
to
the
cylinder
head
.
Be
sure
to
follow
the
procedurefound
in
117
Cam-
shaft
Timing
Chain
.
16
.
Slowlyuniock
and
release
secondary
chain
tensioner
.
17
.
Preloadprimary
chain
by
tightening
BMW
special
tool
no
.
11
3390
(dummy
chain
tensioner)
to
1.3
Nm
(11
in-
lb)
.
Then
tighten
exhaust
secondary
camshaft
sprocket
mounting
bolts
in
two
stages
.
Tightening
Torque
"
Secondary
timing
chain
sprocket
to
exhaust
camshaft
(Torx
bolts)
Stage
1
.
.............
..
..
.
...
5
Nm
(44
in-lb)
Stage
2
..............
..
..
.
,
.
..
22
Nm
(17
ft-1b)
18
.
Remove
flywheel
locking
tool
from
transmission
bell-
housing
.
Remove
camshaft
locking
tool
from
rear
of
cylinder
head
.
19
.
Turn
engine
over
by
hand
at
least
two
fui¡
crankshaft
ro-
tations
.
Reinstall
camshaft
locking
tool
and
flywheel
locking
toolto
make
sure
al¡
adjustments
are
still
cor-
rect
.
lf
settings
are
correct,
remove
locking
tools
.
20
.
Remove
BMW
special
tool
11
3390
(dummy
chain
ten-
sioner)
from
side
of
cylinder
head
.
CAUTION-
Mountintake
camshaft
sprocket
so
thatcollar
side
21
.
Insta¡¡
primary
chain
tensioner
so
that
cutout
in
tension-
of
the
sprocket
faces
camshaft
.
er
piston
engages
chain
rail
.
See
Fig
.
46
.
Using'new
seals,
install
and
tighten
access
plugs
in
VANOS
con
13
.
Install
and
tighten
exhaust
camshaft
sprocket
mounting
trol
unit
.
boits
finger
tight
only
.
Tighten
intake
camshaft
sprocket
mounting
nuts
to
specified
torque
.
Tightening
Torques
"
Access
plugs
Tightening
Torque
to
VANOS
control
unit
.
..
.
.
........
50
Nm
(37
ft-Ib)
"
Intake
camshaft
sprocket
"
Primary
camshaft
timing
chain
tensioner
mounting
nuts
(M6)
..............
10
Nm
(89
in-lb)
to
tensioner
sleeve
..
...
.
.
........
50
Nm
(37
ft-Ib)
CYLINDER
HEAD,
6-CYLINDER
Page 88 of 759
116-
4
CYLINDER
HEAD
AND
VALVETRAIN
NOTE-
"
The
camshaft
bearing
caps
are
coded
with
a
letter
anda
number
.
Forexample,
'541"is
the
exhaustcam-
shaft
bearing
cap
at
the
front
of
the
engine,
and
`El"
is
the
intake
camshaft
bearing
cap
at
the
front
of
the
engine
.
"
Camshafts
are
stamped
with
a
code
letter-'E"
for
the
intakeside
and
A"
for
the
exhaust
side
.
"
"E"
isfor
Einla3,
(German
for
intake)
and
A"
is
for
Auspuff,
(Germen
for
exhaust)
.
"
The
front
of
the
engine
is
at
the
front
of
the
car
.
8
.
Camshaft
installation
is
reverse
of
removal,
noting
the
following
:
"
Prior
to
installation,
check
all
components
for
wear
as
described
below
underCylinder
Head
and
Val-
vetrain
Reconditioning
.
"
Lubricate
camshafts
prior
to
installation
.
"
Reinstall
timing
chain
sprockets
and
tensioner
and
set
valve
timing
before
reinstalling
rocker
arms,as
spe-
cifically
described
in
117
Camshaft
Timing
Chain
.
"
Be
sure
corresponding
camshaft
lobe
is
pointing
up
before
installing
rocker
arms
.
Note
that
each
rocker
arm
angles
away
from
corresponding
spark
plug
hole
.
See
Fig
.
4
.
"
Wait
at
least
10
minutes
for
hydraulic
cam
followers
to
fully
compress
before
cranking
engine
over
with
start-
er
for
the
first
time
.
Tightening
Torques
"
Camshaft
bearing
caps
to
cylinder
head
(M7)
.............
15
Nm
(11
ft-Ib)
"
Cylinder
head
cover
to
cylinder
head
(M6)
.............
10
Nm
(89
in-lb)
"
Primary
timing
chain
tensioner
plug
to
cylinder
head
.
................
40
Nm
(30
ft-lb)
(sea
117
Camshaft
Timing
Chain)
"
Spark
plugs
(M12)
.............
...
23
Nm
(17
ft-lb
Timing
chaincover
(upper)
to
cylinder
head
M6
.....
.
.
...
................
.
10
Nm
(7
.5
ft-Ib)
M7
....
..
.
.
........
.
.....
.
...
.
15
Nm
(11
ft-Ib)
"
Timing
chain
sprockets
to
camshaft
M6
....
.
.
..
..............
.
..
..
10
Nm
(7
.5
ft-Ib)
M7
....
....
..............
.
..
..
.15
Nm
(11
ft
.lb)
(sea
117
Camshaft
Timing
Chain)
Camshafts,
removing
and
installing
(6-cylinder
engine)
Camshafts
on
6-cylinder
engines
can
be
removed
with
the
cylinder
head
mounted
on
the
engine
.
The
first
step
is
to
re-
move
the
cylinder
head
cover
.
See
113
Cylinder
Head
Re-
moval
and
Installation
.
CYLINDER
HEAD,
DISASSEMBLYAND
ASSEMBLY
Fig
.
4
.
Correct
installation
position
ofrocker
arms
(arrows)
on
M44
engine
.
Special
BMW
service
tools
should
always
be
used
to
re-
move
and
instan
the
camshafts
.
Removal
of
camshafts
with-
outthe
special
tools
can
result
in
personal
injury
and/or
cylinder
head
damage
.
WARNING
-
The
processof
evenly
loosening
the
camshaft
bear-
ing
cap
nuts
is
NOT
en
acceptable
method
of
re-
moving
the
camshafts
.
Special
tools
shouldalways
be
used
lo
remove
the
camshafts
.
Be
sure
to
read
the
procedure
through
before
starting
ajob
.
1
.
Disconnect
negative
(-)
battery
cable
.
CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpaga
viii
.
516
2
.
Setengine
to
TDC
and
lock
into
position
by
installing
BMW
special
tool
11
2
300
through
transmission
bell-
housing
and
into
hole
in
flywheel
or
drive
platea
See
Fig
.
5
.
NOTE-
Arrows
on
camshaft
sprockets
shouldbe
pointing
up
.
Sea
117
Camshaft
Timing
Chain
.
3
.
Remove
VANOS
control
unit
from
cylinder
head
.
Re-
move
timing
chainsprockets
from
camshafts
.
See117
Camshaft
Timing
Chain
.
4
.
Remove
sparkplugs
and
insta¡¡
BMW
special
tool
11
3
260/11
3
270
to
cylinder
head
.
Tighten
tool
retaining
bolts
in
spark
plug
holes
.
Do
not
ovar-tighten
bolts
.
See
Fig
.
6
.