Crank bearing BMW 318i 1997 E36 Workshop Manual
[x] Cancel search | Manufacturer: BMW, Model Year: 1997, Model line: 318i, Model: BMW 318i 1997 E36Pages: 759
Page 35 of 759
Accelerator
and
Throttle
Linkage
The
accelerator
and
throttie
linkage
should
be
lubricated
pe-
riodically
.
Use
a
general
purpose
oil
on
the
joints
and
bearings
of
the
linkage
.
Use
a
multipurpose
grease
on
the
bearing
points
of
the
throttie
plate
.
Engine
Drive
Belts
Drive
belts
and
pulleys
transfer
power
from
theengine
crank-
shaft
to
various
accessories
.
See
Fig
.
13
.
Depending
on
model
and
model
year,
engine
driven
accessories
are
driven
by
V-
belts,
poly-ribbed
(serpentine)
belts,
or
a
combination
of
the
two
.
For
example,
early
4-cylinder
engines,
usetwo
V-belts
and
one
poly-ribbed
belt
.
Inspect
drivebelts
with
the
engine
off
.
lf
the
belt
shows
signs
of
wear,
cracking,
glazing,
or
missing
sections,
it
should
be
re-
placed
immediately
.
V
belt,
replacing
(4-cylinder
engines
built
up
to
1194)
0012472
Fig
.
13
.
Drive
belt
and
tensioner
assembly
for
late
4-cylinder
engine
wíth
poly-ribbed
drive
belt
.
V-belts
should
be
inspected
during
regular
maintenance
in-
tervais
.
Incorrect
tension
can
decrease
the
life
of
the
belt
and
the
component
it
drives
.
The
V-belt
tension
is
adjusted
through
a
toothed-rack
mechanism
.
Inspect
belts
with
the
engine
off
.
Twist
the
beltto
inspect
its
sidewalls
and
bottom
.
Beltstructural
damage,
glazed
or
shiny
sidewaljs
caused
by
a
loose
belt,
orseparation
are
al¡
reasons
to
replace
a
belt
.
Replacement
of
the
V-belts
every
four
years
is
recommend-
ed
.
Loosen
the
mounting
bolts
and
adjust
the
belt-driven
unit
until
the
belt
tension
is
as
loose
aspossible
.
Remove
the
belt
by
slipping
it
over
the
pulleys
.
In
some
cases
it
may
be
necessary
to
removeone
V-belt
to
get
to
another
.
Use
a
torque
wrench
and
a
crowfoot
wrench
to
turn
the
tensioning
gear
bolt
and
set
belt
tension
.
Hold
the
wrench
steady
and
tighten
the
locknut
on
the
rear
of
the
tensioning
gear
bolt
.
Tighten
al¡
other
mounting
nuts
.
MAINTENANCE
PROGRAM
020-
1
3
NOTE-
"
For
the
most
accurate
check,
V-belt
tension
should
be
checked
using
a
V-belt
tension
gauge
.
"
Belt
squealing
is
normally
caused
by
loose
beltten-sion
.
Belt
dressings
should
not
be
used
.
Tightening
Torques
"
Tensioning
gear
(alternator
belt
tensioning)
.
.
.
...............
7
Nm
(62
in-lb)
"
Tensioning
gear(power
steering
belt
tensioning)
...
..
...
8
to
8
.5
Nm
(71
to
75
in-lb)
"
Tensioning
gear
locking
nut
.......
24
Nm
(18
ft-Ib)
NOTE-
When
belts
are
replaced
with
new
ones,
store
the
old
set
in
the
luggage
compartment
for
emergency
use
.
When
installing
a
new
belt,
gently
pry
it
over
the
pulleys
.
Too
much
force
may
damage
the
belt
or
the
accessory
.
Tension
the
belt(s),
runthe
engine
for
a
few
minutes
(at
least
1500
rpm),
then
recheck
the
belt
tension
.
CAUTION-
Do
not
over
tighten
the
V-belts
.
Overtightening
will
cause
shaft
bearings
to
fail
prematurely
.
Poly-ribbed
belt,
replacing
(4-cylinder
engines
buiit
from
1194
and
all
6-cylinder
engines)
An
automatic
belt
tensioner
is
used
to
keep
the
belts
ten-
sioned
properly
.
Unless
the
tensioner
mechanism
malfunc-
tions,
the
poly-ribbed
belts
do
not
require
tension
adjustment
.
To
reduce
the
chance
ofbelt
failure
while
driving,
replace-
ment
of
the
belts
every
four
years
is
recommended
.
Mark
drive
belt
rotationdirectíon
if
removing
and
reusing
an
old
belt
.
To
remove
the
belt,
it
is
necessary
toretract
the
self-tension-
er
.
Using
a
breaker
bar
or
other
long
socket
assembly,
rotate
the
tensioner
to
loosenthe
belt
.
See
Fig
.
14
or
Fig
.
15
.
On
4-cyl-
inder
engines,
it
will
benecessary
to
remove
the
A/C
compres-
sor
belt
to
remove
the
main
drive
belt
.
WARNING
-
Observe
care
when
replacing
the
belt
.
Personal
in-
jury
could
result
if
the
tensioner
springs
back
into
position
uncontrollably
.
With
the
belt
removed
from
the
pulleys,
inspect
the
pulleys
for
wear
or
damage
that
may
cause
early
failureof
the
new
belt
.
This
is
also
a
good
opportunity
to
inspect
the
belt-driven
acces-
sories,
checking
for
bearing
wear
and
excess
play
.
Drive
belt
routing
is
shown
in
Fig
.
16
and
Fig
.
17
.
ENGINE
COMPARTMENT
MAINTENANCE
Page 43 of 759
GENERAL
.
.....
.
.
.
.
.
.
.
...
.
.
.
.
.
.
.
.
.
...
100-1
Cylinder
Block
and
Crankshaft
.
.
.
.
.
.
.
.
.
...
100-1
Connecting
Rods
and
Pistons
.
.
.
.
.
.
.
.
.
.
.
.
.
100-1
Cylinder
Head
and
Valvetrain
.
.
.
.
.
.
.
.
.
.
.
.
.
100-2
VANOS
(Variable
Valve
Timing)
.
.
.
.
.
.
.
.
...
100-2
DISA
(Dual
Resonance
Intake
System)
.
.
.
.
.
100-3
Engine
Management
System
.
.
.
.
.
.
.
.
.
.
.
.
.
100-3
Ignition
......
.
.
.
.........
.
.
.
.
.
.
.
.
.
.
.
.
100-5
Fuel
Delivery
..
.
.
.
.....
.
...
.
.
.
.
.
.
.
.
.
.
.
.
100-5
Cooling
System
.
...........
.
.
.
.
.
.....
.
.
100-5
Lubrication
System
.........
.
.
.
.
.
.
.
.
.
.
.
.
100-5
MECHANICALTROUBLESHOOTING
.
.
.
.
100-5
Warnings
and
Cautions
..
.
...
.
.
.
.
.
.
.
.
.
.
.
.
100-5
Cylinder
compression,
checking
.
.
.
.
.
.
.
.
.
.
.
100-6
EngineMechanical
Troubleshooting
Table
.
.
.
100-7
DRIVEABILITY
TROUBLESHOOTING
...
100-8
GENERAL
There
are
various
engíne
configurations
used
in
the
1992-
1998
E36
cars
.
See
Table
a
.
On
both
four-
and
6-cylinder
engines,
the
cylinder
block
is
cast
¡ron
with
integral
cyiinders
.
The
cyiinders
are
exposed
on
all
sides
to
circulating
coolant
.
The
fully
counterweighted
crankshaft
rotates
in
replaceable
split-shell
main
bearings
.
Oiiways
drilled
into
the
crankshaft
pro-
vide
bearing
lubrication
.
O¡I
seals
pressed
into
alloy
sea¡
hous-
ings
are
installedat
both
ends
of
the
crankshaft
.
100
Engine-General
Tablea
.
Engine
Specifications
ENGINE-GENERAL
100-1
On-Board
Diagnostics
(OBD)
...
.
.
.
.
.
.
.
.
.
.
.
100-8
Basic
Requirements
....
.
.
.
...
.
.
.
.
.
....
.100-11
Preventive
Maintenance
......
.
.
.
.
.
.....
100-11
Basic
Engine
Settings
..
.
.....
.
.
.
.
.
.....
100-11
Oxygen
Sensors
.
.
.
...
.
.
.
...
.
.
.
.
.
....
.100-11
Air
Flow
Measurement
and
Vacuum
Leaks
.
.100-12
Battery
Voltage
.
.
...........
.
.
.
.
.
.....
100-12
Wiring
and
Harness
Connections
.
.
.
.
.....
100-13
Ground
Connections
...
.
.....
.
.
.
.
.
.....
100-13
Fue¡
Supply
....
.
...........
.
.
..
.....
.100-14
TABLES
a
.
Engine
Specifications
...
...
...........
.
..
..
.100-1
b
.
Engine
Management
Systems
..
..
...........
..
100-5
c
.
Engine
Mechanical
Troubleshooting
..........
.
.
100-8
d
.
OBD
1
Fault
(Blink)
Codes
(1992-1995
models
only)
.
...
..
..
..........
..
.100-9
e
.
Engine
Driveability
Troubleshooting
...........
.100-15
Model
Engine
code
No
.
of
Dispiacement
Compression
Horsepower
cyiinders
liters
(cu
.
in
.)
ratio
SAE
net
@
rpm
318i/is/¡C
1992-1995
M42
4
1
.8
(109
.6)
10
.0
:1
100
@
6000
1996-1998
M44
4
1
.9
(115
.6)
~
10
.0
:1
103
@
6000
323ís/iC
1998
M52
6
2
.5
(152
.2)
10
.5
:1
168
@
5,500
325i/is/iC
1992-1995
M50
6
2
.5
(152
.2)
10
.0
:1
110
@
5,900
328i/is/iC
1996-1998
M52
6
2
.8
(170
.4)
10
.2
:1
190
@
5,300
M3
1995
S50US
6
3
.0
(182
.5)
10
.5:1
240
@
6,000
1996-1998
S52US
6
3
.2
(192
.3)
10
.5:1
240
@
6,000
Cylinder
Block
and
Crankshaft
Connecting
Rods
and
Pistons
The
forged
connecting
rods
use
replaceable
split-shell
bearings
at
the
crankshaft
endand
solid
bushings
at
the
pis-
ton
pin
end
.
The
pistonsare
of
the
three-ring
typewith
two
up-
per
compression
rings
and
a
lowerone-piece
o¡i
scraper
ring
.
Fui¡-floating
piston
pins
are
retained
with
circlips
.
GENERAL
Page 50 of 759
100-8
ENGINE-GENERAL
Symptom
1
Probable
cause
and
correctiveaction
1
.
Engine
will
not
start
or
run
.
Starter
cranks
a
.
No
fuel
reaching
engine
.
Check
forfuelin
tank
.
engine
at
normal
speed
.
Fuel
pump
notoperating
.
Repair
Group
160
b
.
No
spark
.
Check
ignition
system
.
Repair
Group
120
c
.
Incorrect
valve
timing
.
Check
timing
chain
.
Repair
Group
117
2
.
Check
Engine
warning
light
illuminated
.
a
.
DME
engine
management
system
self-diagnostic
fault
detected
.
Sea
an
authorized
BMW
dealer
or
other
qualified
shop
for
OBD
II
fault
code
diagnosis
.
See
also
On-
board
Diagnostics(OBD),
given
later
inthis
repair
group
.
3
.
White
exhaust
smoke
(steam)
.
a
.
Failed
cylinder
head
gasket
(probably
accompanied
bylowcompression
readings)
.
Replace
gasket
and
resurface
cylinder
head
if
necessary
.
Repair
Group
113
4
.
Blue-gray
exhaust
smoke
and
oily
spark
a
.
Contaminated
or
gasoline-diluted
engine
oil
.
Change
engine
oil
and
replace
oil
filter
.
plugs
.
Indicates
oii
burning
in
combustion
.
Repair
Group
020
b
.
Faulty
valve
guide
seals
or
valve
guides
.
Replace
valve
guide
oil
seals
or
overhaul
cylinder
head
.
Repair
Group
116
5
.
Pinging
or
rattling
when
under
load,
a
.
Ignition
timing
too
advanced
.
Ignition
knocksensors
faulty
(CheckEngine
light
traveling
uphill,
or
accelerating,
especially
illuminated)
.
Repair
Group
120fromlow
speeds
.
Indicates
pre-ignition
or
b
.
Fuel
octane
leve¡
toolow
.
detonation
.
c
.
Engine
running
too
hot
or
overheating
.
Check
cooling
system
.
Repair
Group
170
6
.
Light
metallic
tapping
that
varies
directly
with
engine
speed
.
Oil
pressure
warning
light
not
illuminated
.
7
.
Light
metallic
knock
that
varies
directly
with
enginespeed
.
Oil
pressure
warning
light
blinking
or
fully
illuminated
;
may
be
most
noticeable
during
hard
stops
or
cornering
.
8
.
Screeching
or
squealing
under
load
that
a
.
Loose,worn,
or
damaged
drive
belt
.
Inspect
belt(s)
.
Repair
Group
020
goesaway
when
coasting
.
9
.
Growling
or
rumbling
that
varieswith
engine
a
.
Remove
drive
belt(s)toidentifyfaulty
component
.
Check
for
play,
bearing
roughness,
rpm
.
Indicates
abad
bearing
or
bushing
in
and
loose
mountings
.
Refer
to
appropriate
repair
group
for
repair
procedures
.
an
engine-driven
accessory
.
DRIVEABILITY
TROUBLESHOOTING
On-Board
Diagnostics
(OBD)
On-Board
Diagnostics
is
incorporated
into
al¡
engine
man-
Two
generations
of
OBD
are
usedon
thecars
covered
by
agement
systems
used
on
the
cars
covered
by
this
manual
.
this
manual
:
Therefore,
checking
for
fault
codes
should
be
the
first
step
in
troubleshootinga
driveability
problem
.
For
additional
informa-
On-Board
Diagnostics
tion
on
engine
management
and
repair
see130
Fuel
Injec-
tion
.
"
1992-1995models
....
.
..
....
.
..
.......
OBD
I
"
1996-1998models
.
....
..
.
.
.
..
.
........
OBD
II
DRIVEABILITY
TROUBLESHOOTING
Tablec
.
Engine
Mechanical
Troubleshooting
b
.
Warped
or
cracked
cylinder
head
.
Resurface
or
replace
cylinder
head
.
Repair
Group
113
c
.
Cracked
cylinder
block
.
Replace
engine
or
short
block
.
c
.
Worn
piston
rings
.
Overhaul
or
replace
engine
.
d
.
Failed
cylinder
head
gasket
.
Replace
gasket
.
Repair
Group
113
d
.
Air/fuel
mixture
too
lean
(Check
Engine
light
illuminated)
.
Repair
Group
130
a
.
Valveclearances
excessive
.
Check
hydraulic
valve
adjusters
.
Repair
Group
116
b
.
Low
oil
pressure
orpossibly
defective
warning
light
circuit
.
Check
oil
pressure
andwarning
light
circuit
.
Repair
Group
119
c
.
Dirty
oil
.
Change
oil
.
Repair
Group
020
.
a
.
Low
oil
leve¡
.
Check
and
correct
oil
leve¡
.
b
.
Low
oil
pressure/worn
or
faulty
oil
pump
.
Oil
pump
pickup
restricted/clogged
.
Check
oil
pressure
.
Repair
Group
119
The
OBD
system
detects
emissions-related
engine
manage-
ment
malfunctions
and
tucos
on
the
Check
Engíne
lightin
the
in-
strument
cluster
.
TheCheck
Engine
light
will
stay
on
until
the
code(s)are
called
up
and
the
memory
is
erased
.
When
faulty
are
detected,
the
OBD
system
stores
a
Diagnostic
Trouble
Code
(DTC)
in
the
system
ECM
.
In
addition,
the
Check
Engine
warn-
ing
light
will
come
on
if
an
emissions-related
fault
is
detected
.
Page 86 of 759
116-2
CYLINDER
HEADAND
VALVETRAIN
3
.
Remove
timing
chain
sprockets
and
timing
chains
from
7
.
Slowly
release
pressure
oncamshaft
bearing
capsby
camshafts
.
Remove
upper
timing
chain
guidefrom
cyl-
turningeccentric
shaft
.
Remove
bearing
caps
and
inder
head
.
See117
Camshaft
Timing
Chain
.
camshaft
.
Repeat
procedureon
remaining
camshaft
.
NOTE-
It
is
not
necessary
lo
remove
the
lower
timing
chain
cover
.
4
.
Remove
spark
plugs
and
instaf
BMW
special
tool
11
3
260
to
cylinder
head
.
Tighten
tool
retaining
bolts
in
spark
plug
holes
.
Do
not
over-tighten
bolts
.
See
Fig
.
1
.
6
.
Remove
bearing
cap
mounting
nuts
.
0013033
5
.
Turn
eccentric
shaft
on
special
tool
until
pressure
is
ap-
plied
to
camshaft
bearing
caps
.
See
Fig
.
2
.
Fig
.
2
.
Special
tool
(eccentric
shaft)
being
turned
to
apply
pressure
to
camshaft
bearing
caps
.
CYLINDER
HEAD,
DISASSEMBLYAND
ASSEMBLY
CAUTION-
Camshaft
bearing
caps
mustbe
reinstalled
intheir
original
locations
.
NOTE-
"
The
camshaft
bearing
caps
are
coded
wíth
a
letter
anda
number
.
Forexample,
"Al
"ís
the
exhaust
cam-
shaft
bearing
cap
at
the
front
of
the
engíne,
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"forthe
exhaust
side
.
"
"E"
isforEinlal3,
(German
for
íntake)
and
A"
isfor
Auspuff,
(German
for
exhaust)
.
"
The
front
of
the
engine
is
at
the
front
of
thecar
.
8
.
Camshaft
installation
is
reverse
of
removal,noting
the
following
:
"
Prior
to
installation,
check
al¡
components
for
wear
as
described
below
underCylinder
Head
and
Va¡-
Fig
.1
.
Special
BMW
tool
no
.
11
3
260
.
Tool
mounting
bolts
(arrows)
vetrain,
Reconditioning
.
thread
into
spark
plug
holes
.
"
Crankshaft
must
be
at
least
45°
away
from
TDC
before
installing
camshafts
to
cylinder
head
.
"
Lubricate
camshafts
prior
to
installation
.
Tightening
Torque
"
Install
camshafts
into
cylinder
head
with
lobes
for
cyl-
"
BMW
special
tool
11
1
260
inder
no
.
1
pointing
up
and
towards
each
other
.
to
cylinder
head
.
...
.
.
...........
23
Nm
(17
ft-Ib)
"
After
installing
camshafts),observe
specified
waiting
time
for
hydraulic
cam
followers
to
fully
compress
be-
fore
bringing
crankshaft
back
to
TDC
.
Page 87 of 759
Camshaft
installation
waíting
times
"
Ator
above
68°F
(20°C)
............
.
..
10
minutes
"
50-68°F
(10-20°C)
................
..
.
30
minutes
"
32-50°F
(0-10°C)
.
.......
.
.........
..
.
75minutes
"
Reinstall
timing
chain
sprockets
and
tensioner
as
spe-
cifically
described
in
117
Camshaft
Timing
Chain
.
i
"
Wait
at
least
10minutes
before
cranking
engine
over
with
starter
motor
for
the
fi+
1
1/
/~~
.0
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-Ib)
(see
117
Camshaft
Timing
Chain)
"
Spark
plugs
(M12)
..
.
.............
23
Nm
(17
ft-Ib
"
Timing
chain
cover
(upper)
to
cylinder
head
..
.
.
...
..........
10
Nm
(89
in-lb)
"
Timing
chainsprockets
to
camshaft
M6
........
.
...
.
..
.
..........
10
Nm
(7.5
ft-Ib)
M7
............
.
..
..
...........
15
Nm
(11
ft
.lb)
(see
117
Camshaft
Timing
Chain)
Camshafts,
removing
and
installing
(M44
engine)
Special
BMW
service
tools
should
always
be
used
to
remove
and
install
the
camshafts
.
Removal
and
installation
of
the
cam-
shafts
without
the
special
tools
can
result
in
camshaft
and
val-
vetrain
damage
.
1.
Disconnect
negative
(-)
battery
cable
.
CAUTION-
Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
on
page
vi¡¡
.
CYLINDER
HEAD
AND
VALVETRAIN
116-
3
2
.
Remove
spark
plugs
.
See
1201gnition
System
.
3
.
Rotateengine
until
a
pair
of
camshaft
lobes
are
point-
ing
up
.
Using
BMW
special
tool
115
130,
depresseach
valve
and
valve
spring
enough
to
remove
rocker
arms
.
Rotate
engine
for
the
next
pair
of
rocker
arms
.
See
Fig
.
3
.
cover
.
Fig
.
3
.
BMW
special
tool
no
.
11
5130
(arrow)
being
used
to
depress
valve
stem
to
remove
rocker
arm
.
WARNING
-
Removed
rocker
arms
must
be
reinstalled
in
the
same
locations
.
4
.
Remove
primary
timing
chain
tensioner
from
right
side
of
cylinder
head
.
The
camshafts
can
be
removed
with
the
cylinder
head
5
.
Remove
upper
timing
chaincover
.
mounted
onthe
engine
.
The
first
step
is
to
remove
the
cylinder
head
cover
.
See
113
Cylinder
HeadRemoval
and
Installa-
NOTE-
tion
.
lt
is
not
necessary
to
remove
the
lower
timing
chain
6
.
Remove
timing
chain
sprockets
with
timing
chains
from
front
of
camshafts
.
See
117
Camshaft
Timing
Chain
.
Remove
upper
timing
chain
guide
from
cylinder
head
.
WARNING-
7
.
Remove
camshaft
bearing
caes
and
remove
cam
The
process
of
evenly
loosening
the
camshaft
bear-
shafts
.
ing
cap
nuts
is
NOT
an
acceptable
method
of
re-
moving
the
camshafts
.
Be
sure
to
read
the
CAUTION-
procedure
through
before
starting
the
job
.
Camshaft
bearing
capsmust
be
reinstalled
intheir
original
locations
.
CYLINDER
HEAD,
DISASSEMBLYAND
ASSEMBLY
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
.
Page 90 of 759
116-
6
CYLINDER
HEAD
AND
VALVETRAIN
9
.
Camshaft
installation
is
reverse
of
removal,noting
the
following
:
"
Prior
to
installation,
check
al¡
components
for
wear
as
described
below
under
Cylinder
Head
and
Val-
vetrain
Reconditioning
.
"
Crankshaft
must
be
at
least
45°
away
from
MC
before
installing
camshafts
to
cylinder
head
.
"
Lubricate
camshafts
prior
to
installation
.
"
Insta¡¡
camshafts
into
cylinder
head
with
lobes
for
cyl-
inder
no
.
1
pointing
up
and
towards
each
other
.
See
Fig
.
8
.
"
After
installing
camshaft(s),
observe
specified
waiting
time
for
hydraulic
cam
followers
to
fully
compress
be-
fore
bringing
crankshaft
back
to
TDC
.
Fig
.
8
.
Camshaft
correctly
positioned
for
reassembly
so
thatcylinder
no
.
1
lobes
(arrows)
face
each
other
.
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
chaintensioner
to
cylinder
head-see
117
Camshaft
Timing
Chain
"
Spark
plugs
(M12)
.............
.
.
23
Nm
(17
ft-Ib)
"
Timing
chain
sprocket
to
camshaft
flange
(M6)-see
117
Camshaft
Timing
Chain
CYLINDER
HEAD,
DISASSEMBLYAND
ASSEMBLY
Valves,
removing
and
installing
1
.
Remove
cylinder
head
as
described
in
113
Cylinder
HeadRemoval
and
Installation
.
Remove
exhaust
manifold(s)
.
2
.
Remove
camshafts
using
special
tools
as
descríbed
earlier
.
3
.
On
M42
and
al¡
6-cylinder
engines
:
Remove
camshaft
carriers
by
pulling
them
straight
up
off
mounting
studs
.
CAUTION-
"
Do
not
let
the
hydraulic
cam
followers
fa¡¡
out
as
the
camshaft
carrier
is
removed
.
Special
suction
cupsare
available
from
BMW
to
hold
the
hydrau-
lic
cam
followers
in
place
during
carrier
removal
.
Camshaft
installation
waiting
times
"
at
or
above
68°F
(20
0
C)
....
..
.
..
......
10
minutes
"
50-68°F
(10-20°C)
...
.
..
....
.
..
......
30
minutes
"
32-50°F
(0-10°C)
....
.
..
....
.
..
......
75
minutes
4
.
On
M44
engines
:
Remove
all
hydraulic
valve
adjusters
.
See
Hydraulicvalve
adjusters,
checking
and
re-
"
Reinstall
timing
chainsprockets
and
tensioner
as
spe-
placing
(M44
engine),
later
in
this
section
.
cifically
described
in
117
Camshaft
Timing
Chain
.
"
Waít
at
least
10
minutes
before
cranking
engine
over
CAUTION-
withstarter
motor
for
the
first
time
.
Hydraulic
valve
adjusters
should
be
stored
in
an
upright
position
.
lf
necessary,
use
amagnetic
tool
to
aid
in
removal
of
the
adjusters
.
"
Hydraulic
cam
followers
shouldbe
stored
in
an
upright
position
.
5
.
Remove
valves
using
a
valve
spring
compressor
.
NOTE-
"
The
M44
cylinder
head
has
recessed
valve
stems
.
This
requires
the
use
of
a
special
valve
spring
com-
pressor
tool
.
"
Label
each
valve
assembly
as
it
is
removed
so
it
can
be
installed
in
its
original
position
.
6
.
Remove
and
discard
valve
stem
oil
seals
from
valve
guides
.
See
Valve
stem
oil
seals
later
in
this
section
.
7
.
Valve
installation
is
reverse
of
removal
.
"
Reinstall
exhaust
manifold(s)
with
new
gaskets
.
Use
Molycote
HSC'
5
or
equivalent
anti-seize
thread
com-
pound
on
fasteners
.
Tightening
Torque
"
Exhaust
manifold
to
cylinder
head
M7
............
..
...
....
.
...
..
20
Nm
(15
ft-Ib)
Page 217 of 759
Fig
.
3
.
Clutch
master
cylinder
mounting
bolts
.
Clutch
slave
cylinder,
replacing
0012589
Tightening
Torques
"
Clutch
master
cylinder
to
bulkhead
..
22
Nm
(17
ft-Ib)
"
Fluid
line
to
master
cylinder
orslave
cylinder
.................
16
Nm
(12
ft-1b)
The
clutch
slave
cylinder
is
mounted
on
the
left
side
of
the
transmission
.
CLUTCH
MECHANICAL
1
.
Remove
brake
fluid
reservoir
cap
.
Using
a
clean
sy-
ringe,
remove
brake
fluid
from
reservoir
.
2
.
Disconnect
fluid
hose
from
slave
cylinder
.
Place
a
pan
under
hose
to
catch
any
excess
fluid
.
3
.
Unbolt
slave
cylinder
from
transmission
.
See
Fig
.
4
.
4
.
Installation
is
reverse
of
removal,
noting
the
following
:
"
Check
for
wear
on
pushrod
.
Any
other
wear
except
on
tipis
caused
by
misalignment
of
clutch
components
.
"
Lightly
coat
pushrod
tip
with
molybdenum
disulfide
grease
(Molykote
0
Longterm
2
or
equivalent)
.
"
During
installation
be
sure
pushrod
tip
engages
recess
in
clutch
release
lever
.
"
Fill
fluid
reservoir
with
clean
fluid
.
"
Bleed
clutch
hydraulics
as
described
earlier
.
CLUTCH
210-
3
Fig
.
4
.
Clutch
slave
cylinder
mounting
bolts
(arrows)
.
Tablea
.
ClutchDisc
Diameter
Model
Diameter
3181/is/iC
215
mm
(8
.46
in)
325i/is/iC
228
mm
(8
.98
in)
323is/iC
328i/is/iC
240
mm
(9
.45
in)
M3
0012715
Tightening
Torques
"
Clutch
slave
cylinder
to
transmission
.
.
................
22
Nm
(17
ft
lb)
"
Fluid
line
to
slave
cylinder
......
.17
Nm
(10-12
ft
lb)
The
transmission
must
be
removed
from
the
engine
to
ac-
cess
the
clutch
mechanical
components
.
It
is
recommended
that
the
clutch
disc,
pressure
plate
and
release
bearing
be
re-
placed
duringa
clutch
overhaul
.
Be
sure
to
check
the
bottom
of
the
bellhousing
for
oil
.
If
engine
oil
is
found,
check
for
a
faulty
rear
crankshaft
oil
seal
.
CLUTCH
MECHANICAL
Page 219 of 759
Clutch,
inspecting
and
installing
1
.
Inspect
clutch
disc
for
wear,
cracks,
loose
rivets,
con-
tamination
or
excessive
runout
(warping)
.
Replace
if
necessary
.
2
.
Inspect
flywheel
for
scoring,
hot
spots,
cracks
or
loose
or
worn
guide
pins
.
Replace
flywheel
if
any
faults
are
found
.
WARNING
-
If
flywheel
is
removed
from
vehicle,
use
new
bolts
duríng
installation
.
The
old
stretch-typebolts
should
not
be
reused
.
3
.
Inspecttransmission
pilot
bearing
in
end
of
crankshaft
.
The
bearing
should
rotate
smoothly
without
play
.
If
nec-
essary,
replace
as
described
later
.
4
.
Inspect
and
clean
releasebearing
lever
.
Apply
a
thin
coat
of
grease
to
releasebearíng
lever
contact
points
.
See
Fig
.
9
.
Also,
lightly
lubricate
clutch
disc
splines
and
transmission
inputshaft
splínes
.
5
.
Install
pressure
plate
and
clutch
disc
.
Do
not
fully
tight-
en
bolts
.
6
.
Center
clutch
disc
on
flywheel
using
centering
tool
(BMW
special
tool
no
.
21
2
130
or
equivalent)
.
Refer
to
Fig
.
7
.
NOTE-
Be
sure
clutchdísc
is
facing
the
correct
way
.
The
new
disc
should
bemarked
engine
sfde
or
transmission
side
.
See
Fig
.
10
.
7
.
Tighten
each
bolt
one
turn
at
a
time
until
pressure
plate
is
fully
seated,
and
then
torque
to
specification
.
8
.
Remove
clutch
disc
centering
tool
.
Remove
flywheel
locking
tool
.
Fig
.
9
.
Clutch
release
lever
lubrication
points
(arrows)
.
CLUTCH
210-
5
Clutch
Clutch
pressure
disc
plate
0012026
Fig
.
10
.
Clutch
assembly
Note
clutch
disc
hub
position
during
instal-
lation
.
CLUTCH
MECHANICAL
Page 220 of 759
210-
6
CLUTCH
9
.
Clean
and
inspectrelease
bearing
guide
sleeve
on
transmission
.
Install
release
lever
and
release
bearing
.
See
Fig
.
11
.
A
0011582
Fig
.
11
.
Clutchrelease
bearing
correctly
installed
on
guide
sleeve
(A)
.
Bearing
tabs
(B)
align
with
contact
points
(C)
on
release
lever
.
10
.
Insta¡¡
transmission
.
See230
Manual
Transmission
.
Tightening
Torques
"
Flywheel
to
crankshaft
(use
new
bolts)
M42/M44
engines
....
.
..
...
....
120
Nm
(89
ft-Ib)
All
others
..........
..
.
..
......
105
Nm
(77
ft-Ib)
"
Pressure
píate
to
flywheel
M8
8
.8
grade
......
...
.
.
........
24
Nm
(18
ft-Ib)
M8
10
.9
grade
.....
..
..
..
.......
34
Nm
(25
ft-Ib)
CLUTCH
MECHANICAL
Transmission
pilot
bearing,
replacing
1
.
Remove
clutch
as
described
earlier
.
2
.
Remove
transmission
pilot
bearing
from
end
ofcrank-
shaft
using
BMW
special
tool
no
.
11
2
340,
or
equiva-
lent
.
3
.
Press
new
bearing
finto
placeusing
BMW
Specíal
Tool
no
.
11
2
350,or
equivalent
.