remove seats BMW 323i 1993 E36 Workshop Manual
[x] Cancel search | Manufacturer: BMW, Model Year: 1993, Model line: 323i, Model: BMW 323i 1993 E36Pages: 759
Page 85 of 759
GENERAL
CYLINDER
HEAD,
DISASSEMBLY
AND
ASSEMBLY
CYLINDER
HEAD
AND
VALVETRAIN
116-1
116
Cylinder
Head
and
Valvetrai
n
GENERAL
.
.....
.
.
.
...
.
.
.
.
.
.
.
.
.
.......
116-1
Hydraulic
cam
followers,
checking
and
replacing
(M42
and
al¡
6-cylinder
engines)
.
...
.....
.
..
116-9
CYLINDER
HEAD,
Valve
guides
.
.
.
...
.
.
.
.
.
.
...
.
.
.
.
.
.
.
.
.
.
116-10
DISASSEMBLY
AND
ASSEMBLY
...
.
...
116-1
Valves
.
.
.
.
.
.
.
.
.
.
.
.
.
...
.
...
.
.
.
.
.
...
.
.
116-11
Camshafts,
removing
and
installing
(M42
engine)
....
.
....
.
.
.
.
.
.
.
.
.
.....
.
.
116-1
Valves,
leak
test
.
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.
.
.
.
.
.
116-11
Camshafts,
removing
and
installing
Valve
stem
oil
seals
.
.
.
.......
.
.
.
.
.
...
.
.
116-11
(M44
engine)
.........
.
.
.
.
.
.
.
.
.
.......
116-3
Valve
seats
.
.
.
.
.
.
.
.
.
...
.
...
.
.
.
.
.
...
.
.116-12
Camshafts,
removing
and
installing
Valve
springs
.
.
.
.
.
.
.
.
...
.
...
.
.
.
.
.
.....
116-12
(6-cylinder
engine)
.....
.
.
.
.
.
.
.
.
.
.......
116-4
Valves,
removing
and
installing
........
.
....
116-6
TABLES
CYLINDER
HEAD
AND
VALVETRAIN,
a
.
Cylinder
Head
Height
........
....
.
..
..........
116-7
RECONDITIONING
.
...
.
.
.
.
.
.
.
.
.
.......
116-7
b
.
Camshaft
Specifications
.......
..
.
..
........
.116-7
Cylinder
head
...
.
.
.
...
.
.
.
.
.
.
.
.
.
....
.
..
116-7
c
.
Valve
Guide
Specifications
....
...
.
..
........
116-10
d
.
Valve
Specifications
...........
..
.
..
........
116-11
Camshaft
.
.
.
.
.
.
.
.
.
.
.
.
.
.
...
.
.
.
.
.
.......
116-7
e
.
Valve
Seat
Dimensions
.........
.
..
..
......
.116-12
Hydraulic
valve
adjusters,
checking
and
replacing
(M44
engine)
..
.
.
.
116-8
Camshafts,
removing
and
installing
(M42
engine)
This
repair
group
covers
cylinder
head
and
valvetrain
ser-
vice
and
repair
.
Most
of
the
repairs
described
here
require
that
The
camshafts
can
be
removed
with
the
cylinder
head
the
cylinder
head
first
be
removed
as
described
in
113
Cylin-
mounted
on
the
engine
.
The
first
step
is
to
remove
the
cylinder
der
HeadRemoval
and
Installation
.
head
cover
.
See
113
Cylinder
HeadRemoval
and
Installa-
tion
.
NOTE-
Special
BMW
service
tools
should
always
be
used
to
remove
"
For
timing
chain
and
VANOS
repair
information,
see
and
install
the
camshafts
.
Removal
and
installation
of
the
cam-
117
Camshaft
Timing
Chain
.
shafts
without
the
special
tools
can
result
in
camshaft
and
valve
"
If
it
is
determined
that
the
cylinder
head
will
require
train
damage
.
significant
reconditioning
work,
a
remanufactured
cyl-
inder
head
may
bea
good
alternative
.
Remanufac-
WARNING-
tured
cylinder
heads
are
available
froman
authorized
The
process
of
evenly
loosening
the
camshaftbear
BMW
dealer
.
ing
cap
nuts
is
NOT
an
acceptable
method
of
re-
moving
the
camshafts
.
Be
sure
to
read
the
The
information
given
in
this
repair
group
is
organized
ac-
procedure
through
before
starting
the¡ob
.
cording
to
engine
code
.
For
engine
applicationinformation,
see100
Engine-General
.
1
.
Disconnect
negative
(-)
battery
cable
.
CAUTION-
Prior
to
disconnectiog
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manualonpage
viii
.
BMW
special
tools
are
required
for
most
cylinder
head
ser-
2
.
Remove
radiator
cooling
fan
shroud
and
cooling
fan
.
vice
described
in
this
repair
group
.
Many
of
these
tools
areex-
See
170
Radiator
and
Cooling
System
.
pensive
and
only
available
through
an
authorized
BMW
dealer
.
If
the
special
tools
are
not
available,
one
altematve
is
to
remove
the
cylinder
head
and
have
it
disassembled
byan
authorized
CAUTION-
BMW
dealer
.
Be
sure
to
read
each
procedure
thoroughlybefore
Radiator
fa
n
has
left
hand
threads
.
starting
a
job
to
determinewhich
special
tools
and
equipment
will
be
necessary
.
CYLINDER
HEAD,
DISASSEMBLYANDASSEMBLY
Page 91 of 759
CYLINDER
HEAD
AND
VALVETRAIN,
RECONDITIONING
Thís
section
provides
the
specifications
and
special
recon-
ditioning
information
necessary
to
repair
the
cylinder
heads
covered
by
this
manual
.
If
machine
shop
services
are
not
readily
available,
one
al-
ternative
is
to
install
a
remanufactured
cylinder
head
froman
authorized
BMW
dealer
.
Cylinder
head
NOTE-
When
replacing
the
cylinder
headon
engines
with
re-
movablecamshaft
carriers,
be
sure
to
check
the
cam-
shaft
carrier
bearing
surfaces
for
warpage
.
4-cylinder
1
140
.0
mm
(5
.512
in)
1
139
.55
mm
(5
.494
in)
6-cylinder
1
140
.0
mm
(5
.512
in)
1
139
.7
mm
(5
.500
in)
CYLINDER
HEAD
AND
VALVETRAIN
116-
7
A
The
disassembled
cylinder
head
should
be
inspected
for
Fig
.
9
.
Front
víew
of
cylinder
head
showing
minimum
resurfacing
di-
warpage
and
cracks
.
Check
the
valve
guides
and
valveseats
mension
(A)
.
for
wear
before
machining
a
warped
head
.
Always
decarbon-
ize
and
clean
the
head
before
inspectiog
it
.
A
high-quality
Camshaft
straíght
edge
can
be
used
to
check
for
warpage
.
Camshaft
wear
is
usually
caused
by
insufficient
lubrication
.
Visually
inspect
the
cylinder
head
for
cracks
.
If
acracked
Visually
inspect
the
camshaft
lobes
and
journals
for
wear
.
cylinder
head
is
suspected
and
no
cracks
are
detected
Camshaftwear
specifications
are
given
in
Table
b
.
through
the
visual
inspection,
have
the
head
further
tested
for
cracks
byan
authorized
BMW
dealer
.
A
cracked
cylinder
head
Table
b
.
Camshaft
Specifications
must
be
replaced
.
4-cylinder
engines
Axialplay
M42
engine
0
.065-0
.150
mm
(0
.0025-0
.0059
in)
M44
engine
0
.065-0
.150
mm
(0
.0025-0
.0059
in)
Radial
play(Plastigage)
0
.020-0.061
mm
(0
.0008-0
.0024
in)
M42
engine
M44
engine
0
.040-0
.082
mm
(0
.0016-0
.0032
in)
6-cylinder
engines
A
warped
cylinder
head
can
be
machined
provided
no
Axial
pla
y
more
than
0
.3
mm
(0
.012
in)
of
material
is
removed
.
If
further
All
0
.020-0.054
mm
(0
.0008-0
.0021
in)
machining
is
required,
the
head
should
be
replaced
.
Remov-
Radial
play(Plastigage)
0
.150-0.330
mm
(0
.006-0.013
in)
ing
more
than
this
amount
will
reduce
the
size
of
the
combus-
All
tion
chamber
and
adversely
affect
engine
performance
.
A
0
.3
mm
thicker
gasket
is
available
from
an
authorized
BMW
parts
department
for
machined
heads
.
NOTE-
-
On
M44
engines,
check
the
oil
sprayer
tube
in
the
top
Before
machining
the
head
to
correct
for
warpage,
measure
of
the
cylinder
head
coverand
the
tubesea¡
in
the
cyl-
the
total
height(thicknessof
the
cylinder
head)
.
See
Fig
.
9
.
inderhead
.Acloggedsprayertubeoradefectiveseal
Minimum
height
specifications
are
given
in
Table
a
.
will
reduce
oil
flowto
the
camshaft
.
See
Fig
.
10
.
-
If
the
camshaft
is
being
replaced
due
to
cam
lobe
Table
a
.
Cylinder
Head
Height
wear,
the
corresponding
rockerarms
orcam
followers
Engine
New
Minimum
height
shouId
also
be
replaced
to
avofd
damaglng
the
new
(dimension
A)
camshaft
.
CYLINDER
HEAD
AND
VALVETRAIN,
RECONDITIONING
Page 318 of 759
411-
4
DOORS
6
.
Disconnect
radio
speaker
harness
connector
.
Fig
.
7
.
Door
panel
being
unclipped
from
door
.
Pull
panel
retaining
clips
off
one
at
a
time
.
7
.
Installation
is
reverse
of
removal,
noting
the
following
:
"
Replace
any
damaged
plastic
parts
orclips
.
"
Renew
vapor
barrier
ifit
is
damaged
.
"
Use
new
mounting
bolts
when
reinstalling
the
side-im-
pactairbag
to
the
door
(where
applicable)
.
"
When
installing
door
panel,
align
metal
retainers
on
window
sill
with
openingsontop
of
door
panel
.
See
Fig
.
8
.
"
Check
door-lock
mechanism
and
window
for
ease
of
movement
.
"
If
battery
was
disconnected,
re-initialize
window
regu-
lator
motors
as
described
in
512
Door
Windows
.
373
Fig
.
8
.
Metal
retainers
at
base
of
window
should
be
in
position
to
mate
with
openings
in
door
trim
panel
.
DOOR
PANELS
Reardoor
trimpanel,
removing
and
installing
1
.
Open
door
and
pry
out
power
window
switch
.
Discon-
nect
harness
connector
.
2
.
Remove
ash
tray
.
3
.
Pry
off
trim
cover
from
inside
door
handle
.
4
.
Pry
off
concealing
plugs
from
armrest
.
Remove
door
panel
retaining
screws
.
See
Fig
.
9
.
Fig
.
9
.
Pry
off
plugs
(arrows)
andremove
screws
.
5
.
Unscrew
door
locking
knob
.
6
.
Unclip
panel
from
door
perimeter,
starting
at
thetop
of
the
door
.
7
.
Installation
is
reverse
of
removal
.
"
Replace
any
damaged
plastic
parts
or
clips
.
"
Renew
vapor
barrier
ifit
is
damaged
.
"
Align
metal
retainers
on
window
sill
with
openings
in
trim
panel
.
Refer
to
Fig
.
8
.
"
Check
door-lock
mechanism
and
window
for
ease
of
movement
.
Rear
side
trim
panel,
removing
and
install-
ing
(coupe
models)
1
.
Remove
rear
seat
cushion
.
Remove
rear
backrest
side
section
.
See
520
Seats
.
2
.
Pull
off
edge
trimat
bottom
of
rear
side
window
.
See
Fig
.
10
.
3
.
Gently
unclip
trim
panel
andremove
.
4
.
Installation
is
reverse
of
removal
.
"
Replace
any
damaged
plastic
parts
or
clips
.
Page 361 of 759
GENERAL
This
repair
group
covers
removal
and
installation
of
the
front
and
rear
seats
.
FRONT
SEATS
The
front
seats
installed
in
E36
cars
come
in
either
manual
or
electrically
powered
versions
.
Cloth,vinyl
and
leather
ver-
sions
are
offered
.
M3
sport
seats
have
extra
bolsters
on
the
sides
of
the
sean-back,
a
thigh
support
bolster,
and
extra
con-
trols
for
sean
inclination
.
Seat
removal
and
installation
is
similar
for
all
versions
.
Seat
disassembly
differs
in
details
among
the
many
models
of
seats
.
Front
seat,
removing
and
installing
1
.
Move
seat
to
fui¡
forward
position
and
raise
it
as
far
as
possible
.
Remove
two
mounting
bolts
at
rear
of
sean
rails
.
See
Fig
.
1
.
2
.
Move
seat
to
fui¡
rear
position,
keeping
it
raised
.
3
.
Disconnect
negative
(-)
cable
from
battery
.
Fig
.1
.
Frontseat
rear
mounting
bolts
(arrows)
.
CAUTION-
Prior
to
disconnecting
the
battery,
read
the
battery
disconnection
cautions
given
at
the
front
of
this
manual
onpage
viii
.
520
Seats
SEATS
520-1
GENERAL
...
.
.
.
.
.
.
.
.
.
..............
.
.
520-1
Rear
seat
cushion
and
backrest,
removing
and
installing
FRONT
SEATS
.
.
.
.
.
.
......
.
.
.
...
.
.
.
.
.
.
520-1
(fixed
seat
back
models)
......
.
.
.
...
.
...
520-5
Front
seat,
removing
and
installing
...
.
.
.
..'
520-1
Rear
seat
cushion
and
backrest,
Manual
Front
Seat
Assembly
.............
520-3
removing
and
installing
fold-downsean
back
models
(
)
..
.
.
..
..
.
...
520-5
Power
Fronf
Seat
Assembly
..
.
.....
.
.
.
.
.
;
520-4
Rear
seat
backrest
side
section,
REAR
SEATS
.
.
.
.
.
.
.
.
.
............
.
...
520-5
removing
and
installing
(fold-down
seat
back
models)
..
.
.....
.
..
.520-6
4
.
Remove
plastic
caps
from
front
mounting
nuts,
and
then
remove
mounting
nuts
.
See
Fig
.
2
.
WARNING
-
Deactivate
front
seat
belt
lock
tensioners
before
proceeding
to
next
step
.
See720
Seat
Belts
.
NOTE-
Use
a
blanket
to
protect
door
sill
from
scuffing
bysean
rail
during
seatremoval
.
FRONT
SEA
TS
Page 363 of 759
Manual
Front
Seat
Assembly
The
non-power
seat
in
E36
cars
is
shown
disassembled
in
Fig
.
4
.
Component
replacement
is
possible
once
theseat
has
been
removed
from
the
vehicle
as
described
earlier
.
Fig
.
4
.
Construction
of
non-power
front
seat
.
SEATS
520-
3
1.
Backrest
padding
4
.
Seat
adjustment
controis
7
.
Seatframe2
.
Backrest
frame
5
.
Seat
adjustmentcables
8
.
Seat
cushion
3
.
Backrest
release
lever
(two-door)
6
.
Seat
tilt
control
(M3
only)
9
.
Knee
bolster
(M3
only)
FRONT
SEA
TS
Page 364 of 759
520-
4
SEATS
Power
Front
Seat
Assembly
The
power
seat
in
E36
cars
is
shown
disassembled
in
Fig
.
5
.
Component,
actuator
and
drive
cable
replacement
is
possi-
ble
once
theseat
has
been
removed
from
the
vehicle
as
de-
scribed
earlier
.
FRONT
SEA
TS
Fig
.
5
.
Construction
of
power
front
seat
.
1
.
Backrest
frame
6
.
Lumbar
support
(to
9/94)
11
.
Seat
track
2
.
Seatframe
7
.
Vertical
adjustment
(rear)
12
.
Seat
tilt
motor3
.
Backrest
release
lever
(two-door)
8
.
Backrest
adjustment
gearbox
13
.
Tilt
motorgearbox4
.
Backrest
release
lever
cable
9
.
Backrest
adjustment
motor
14
.
Forward/backward
driveshafts
5
.
Lumbar
support
(from9/94)
10
.
Wiring
harness
15
.
Forward/backwardmotor
Page 365 of 759
REAR
SEATS
Rear
seat
cushion
and
backrest,
removing
and
installing
(fixed
seat
back
modeis)
1
.
Pull
front
of
bottomcushion
up
and
out
of
clips
.
NOTE-
Remove
rear
headrests,
if
equipped
.
2
.
Fold
down
center
armrest
andremove
belts
from
be-
hind
arm
rest
.
3
.
Slide
seat
backup
off
holders
.
Then
slide
to
side
lo
clear
seat
belts
.
See
Fig
.
6
.
Rear
seat
cushion
and
backrest,
removing
and
installing
(foid-down
seat
back
modeis)
1
.
Pullfront
of
bottom
cushion
up
and
out
ofclips
.
NOTE-
Remove
rear
headrests,
if
equipped
.
Fig
.
6
.
To
remove
rear
seat,
remove
bottom
cushion
.
Remove
belts
(A)
behindcenter
armrest
.
Slide
seat
back
up
off
holders,
then
forward
.
SEATS
520-
5
2
.
Remove
bottom
seat
belt
anchor
belts
.
See
Fig
.
7
.
NOTE-
Be
sure
to
note
relative
positions
of
metal
belt-end
an-
chors
in
order
to
reassemble
correctly
.
00131b!
Fig
.
7
.
Rearseat
belt
anchor
bolt
under
rear
seat
cushion(arrow)
.
3
.
Tilt
backrests
forward
and
unclip
plastic
cover
.
See
Fig
.
8
.
t
;
Fig
.
8
.
Rear
seat
back
mountingcover
plate
at
base
ofseat
back
.
REA
R
SEA
TS
Page 366 of 759
520-
6
SEATS
4
.
Push
spring-loaded
lock
back
and
unclip
seat
back
.
See
Fig
.
9
.
Fig
.
9
.
Push
spring-loaded
clip
back
(arrow)
.
UU13117
5
.
Installation
is
reverse
of
removal
.
Make
sure
backrest
locks
at
top
seat
belt
connection
.
REA
R
SEA
TS
Rear
seat
backrestside
section,
removing
and
installing
(foid-downseat
back
modeis)
1.
Pull
front
of
cushion
up
and
out
of
clips
.
2
.
Fold
down
rear
seat
backrest
.
3
.
Lift
backrest
side
section
up
and
out
.
See
Fig
.
10
.
4
.
Installation
is
reverse
of
removal
.
0013175
Fig
.
10
.
Remove
backrest
sidesection
by
lifting
out
(A)
and
up
(B)
.
1#=am
Page 456 of 759
640-10
HEATING
AND
AIR
CONDITIONING
i
El
Radio
Antenna
Rear
.
,
si,-
Left
side
I
d
1
.
Rear
vents
2
.
Fresh
air
3
.
Face-level
vents
4
.
Recirculation
5
.
Footwell
vents
0013017
Fig
.
28
.
Location
oflate
production
air
distribution
motors
in
heater
box(shown
in
rear,
side
and
top
views)
.
Heater
andA/C
air
distribution
motor,
replacing
(rotary-knob)
1
.
Toaccess
left
side
motors
(dash
vent
mixing
or
recircu-
lation
flap),
remove
lower
dash
panel
and
knee
bolster
on
driver
side
.
See
513
Interior
Trim
.
2
.
To
access
right
side
motor
(fresh
air
flap),
remove
glove
compartment
.
See513
Interior
Trim
.
3
.
Each
motor
can
be
removed
after
its
electrical
wiring
harness
connector
has
been
removed
.
Squeeze
plastic
clip
to
release
motor
.
See
Fig
.
29
.
Fig
.
29
.
A/
C
air
distribution
motor
plastic
retaíning
clip
(arrow)
.
Re-
lease
clip
and
tilt
motor
out
of
housing
.
Rear
Window
Defogger
0011877
The
rear
window
defogger
switch
is
integrated
with
the
heating
andA/C
control
head
.
HEATER
AND
CONTROLS
Fig
.
30
.
Wiring
diagram
of
rear
window
defogger
and
radio
antenna
.
Rear
Window
Blower
(Convertible
Models)
A
blower
fan,
fitted
into
the
rear
seatback,
defogs
therear
window
.
It
will
only
operate
with
the
engine
nunning
and
the
top
raised
.
A
microswitch
behindthe
rear
seats
provides
the
signal
that
thetop
is
raised
.
To
access
the
blower
fan
motor,
it
is
necessary
to
remove
four
screwsfrom
the
center
seat
back
.
Remove
the
wiring
har-
ness
connector
and
motor
mounting
boits,
then
remove
motor
by
pulling
it
down
and
forward
.
See
Fig
.
31
.
ri
Suppressor
filter
1
0013005
Fig
.
31
.
Rear
window
blower
in
center
of
rear
seat
back
(arrow)
.
The
electric
rear
window
defogger
is
integrated
with
the
ra-
dio
antenna
.
See
Fig
.
30
.
y
/f
0013014
Page 472 of 759
720-2
SEAT
BELTS
WARNING
-
"
For
maximum
protection
from
injury,
seat
belts
should
be
replaced
as
a
set
(including
all
hard-
ware),
if
they
are
subject
to
occupant
loading
in
a
collision
.
"
Seat
belts
should
not
be
modified
or
repaired
.
The
seat
belt
anchorage
points
should
not
be
changed
or
modified
.
"
Do
notbleach
or
dye
seat
belt
webbing
.
Webbing
that
is
severely
fadedor
re-dyed
will
not
meet
the
strength
requirements
of
a
collision
and
must
be
replaced
.
"
Seat
belts
shouldbe
periodically
inspected
for
webbing
defects
suchas
cuts
or
pulled
threads
.
FRONT
SEATBELT
ASSEMBLY
Automatic
Front
Seat
Belt
Lock
Tensioners
The
procedure
for
disabling
the
mechanical
spring
tension-
er
used
on
early
cars
is
covered
below
.
On
cars
with
thepyro-
technic(explosive
device)
tensioners,
the
orange
harness
connectorshould
be
removed
from
the
tensioner
any
time
the
seat
is
removed
.
WARNING
-
Both
the
mechanical
and
the
pyrotechnictensioners
are
powerful
devíces
and
shouldbehandled
with
extreme
care
.
Mechanical
spring
tensioner,
disarming
1
.
Remove
front
seat
.
See
520
Seats
.
2
.
Disarm
tensioner-electrically
adjustableseats
:
"
Working
at
side
of
seat,
turn
activating/deactivating
screw
clockwise
until
display
changes
from
green
to
red
.
See
Fig
.
2
.
"
Before
reinstalling
seat,
turn
screw
until
display
chang-
esback
to
green
.
NOTE-
Green
is
armed
.
Red
is
disarmed
.
3
.
Disarm
tensioner-manually
adjustable
seats
:
"
Cut
wíre
tie
next
to
tab
on
bowden
cable
.
See
Fig
.
3
.
"
Turn
and
lift
tabto
disengage
cable
housing
from
seat
bracket
.
"
Disconnect
cable
end
from
seat
lever
.
"
When
reinstalling,
correctly
engage
tab
end
of
cable
into
seat
bracket
and
fasten
in
position
using
new
wíre
tie
.
FRONT
SEATBELT
ASSEMBLY
0012737
Fig
.
2
.
Electrically
adjustable
front
seat
.
Turn
screw
(A)
to
disarm
me-
chanical
tensioner
.
Display
B
tucos
from
green
to
red
.
F19
.3
.
Manuallyadjustablefrontseat
.Turnandlifttab(arrow)todis-