heating BMW 318i 1998 E36 Service Manual

BMW 318i 1998 E36 Service Manual 318i 1998 E36 BMW BMW https://www.carmanualsonline.info/img/1/2800/w960_2800-0.png BMW 318i 1998 E36 Service Manual

Page 447 of 759

BMW 318i 1998 E36 Service Manual 
GENERAL

E36
cars
are
equipped
with
integrated
automatic
heating

and
air
conditioning
systems
.
Many
of
the
procedures
given
in

this
repair
group
require
that
the
A/C
refrigerant
charge
be

evacuat

Page 448 of 759

BMW 318i 1998 E36 Service Manual 
640-2

	

HEATING
AND
AIR
CONDITIONING

3
.
Remove
wiring
harness
retaining
clip
at
bulkhead
.
Re-

move
screws
retaining
wiring
harness
cover
and
pull

cover
forward
.
See
Fig
.
2
.

0012529

Fig
.

Page 449 of 759

BMW 318i 1998 E36 Service Manual 
9
.
Release
blower
motor
retaining
strap
andremove
blow-
er
motor
and
fans
fromcowl
opening
.

NOTE-

Twist
and
rotate
blowermotor
assembly
to
facilítate
re-
moval
from
opening
.
If
the
blower
motor

Page 450 of 759

BMW 318i 1998 E36 Service Manual 
640-4

	

HEATING
AND
AIR
CONDITIONING

Heater
box,
removing
and
installing

The
heater
box,
located
underneath
thecenter
of
the
dash-

board,
houses
theheater
core,
the
A/C
evaporator,
and
asso-

ci

Page 451 of 759

BMW 318i 1998 E36 Service Manual 
Fig
.
12
.
Mounting
bolt
for
A/C
refrigerant
line
flange
(arrow)
.

001Suu7

Fig
.
13
.
A/
C
control
module
(A)
behind
center
console
.
Arrows
pointto
electrical
harness
connectors
to
be
disconnected

Page 452 of 759

BMW 318i 1998 E36 Service Manual 
640-6

	

HEATING
AND
AIRCONDITIONING

Heater
core,replacing

1.
Drain
engíne
coolant
.
See170
Radiator
and
Cooling

System
.

WARNING
-

Allow
the
cooling
system
to
cool
before
opening
or
drainíng

Page 453 of 759

BMW 318i 1998 E36 Service Manual 10
.
Pul¡
heater
core
up
and
backward,
away
from
heater
box
.
If
necessary,
remove
left
and
right
reinforcing
bracket
bolts
.
See
Fig
.
20
.

CAUTION-

Replace
coolant
flange
O-rings
and
tighten
fas-

Page 454 of 759

BMW 318i 1998 E36 Service Manual 
640-8

	

HEATING
AND
AIR
CONDITIONING

0012649

Fig
.
22
.
A/
C
control
head
faceplate
screwson
rotary
knob
version
(ar-
rows)
.
Once
screws
are
removed,
faceplate
must
be
un-
clipped
from
control
h

Page 455 of 759

BMW 318i 1998 E36 Service Manual 
Sensor

fan

Fig
.
25
.
Digital
display
A/C
control
head
components
.

2
.
Unscrew
left
and
right
screws
retaining
control
head
to
control
module
.
Press
retaining
clips
and
release
front
plate
from

Page 456 of 759

BMW 318i 1998 E36 Service Manual 
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