Datsun C210 series Manual page 503

VACUUM CHECK
VALVE
REMOVAL
AND
INSTALLATION
Check valve is located
in
vacuum
line
near
blower Always install
it
with
M mark facing intake mani
fold
INSPECTION
Blow air
through ports
of
vacuum
check valve
to
make
sure
air
flow
is
moving
in
one
direction
only
AIR INTAKE DOOR
ACTUATOR
REMOVAL AND
INSTALLATION
Disconnect battery ground cable
2 Remove dash face finisher and
glove
box
3 Disconnect
vacuum
tube
from
actuator
4 Disconnect
return
spring from
blower assembly
5 Remove
screws
attaching
actua
tor
6 Remove
screw
attaching
air in
take door lever
7
Remove
actuator
with
air
intake
door lever and return
spring
8
Installation
is in
the
reverse
order
of removal
Note Make
sure
that air intake door
shuts off outside air
oompletely
Air int ake door
actua C
1
2 Returri
p
g r
3 Air in tab d t 1e
r
AC049A
Fig
AC
54J
Remouing
Air Intake
Door Ac
mator
Air
Conditioning
INSPECTION
Start
engine
2 Make
sure
that
actuator
rod oper
ates
when
air
control lever
is set in
BI LEVEL HEAT
or
DEF
position
If
it
does
not
operate and
a vacuum
is
present
at actuator
side of air intake
door solenoid valve replace
air
intake
door actuator
AIR
INTAKE
DOOR
SOLENOID VALVE
REMOVAL AND
INSTALLATION
Disconnect
battery ground
cable
2 Remove dash face fmisher
on
passenger
s
seat
side
3 Disconnect
vacuum
hose and lead
wires from
air
intake door solenoid
valve
at connector
4
Remove
screws
retaining
solenoid
valve
to
blower
case
and then
remove
solenoid
valve
AC064A
Fig
AC 55
Removing
Air Intake Door
Solenoid Value
S Installation
is in the
reverse
order
of removal
INSPECTION
I
Check
relay
for
continuity
be
tween
yellow
green
and black leads
using ohmmeter
or
test
lamp
2
Apply
12V DC
voltage
between
yellow green and black leads
a
click is
heard Then make
sure
that airflow
is
felt
around
one
of solenoid
valve
vacuum ports
when the other
vacuum
port
is
sucked back
orally
AC 32
DELAY
RELAY
REMOVAL AND
INSTALLAnON
I Disconnect battery ground cable
2 Remove
dash face finisher
on
passenger s
seat
side
3
Disconnect lead
wires
from delay
relay at connector
4
Remove
screw
retaining delay
relay to
blower
case
and then
remove
delay relay
s
Installation
is in
the
reverse
order
of removal
INSPECTION
Check
delay relay
for
continuity
using ohmmeter or
test
lamp
1
Connect
test
lamp
to
terminal
00
and
connect
the other end of
lamp
to negative
terminal of DC l2V
power
source
2 Connect terminal ofDC 12V
to
terminal CD
terminal
of DC
l2V
to
terminal
ID
@ or@
and
make
sure
that
test lamp
lights
after
1
5 seconds
B
Fig
AC 56
Delay
Re oy
AIR INTAKE DOOR
SOLENOID
REMOVAL
AND
INSTALLATION
Disconnect
hattery ground
cable
2 Remove dash face finisher
on
passenger
s
seat
side
3
Disconnect lead wires from
air
intake door solenoid
at connector
4
Remove
screws
retaining
solenoid
to
blower
case