air conditioning DATSUN 210 1979 Service Manual

Erigine
crankcase

EI
gine
cooling
system

Transmission
case

Final
drive
case

housing

Steering
gear
box

Fuel
tank

Air

conditioning
system

Refrigerant

Compressor
oil

f
tl

It
J

4
i

1

protect
the

catalytic

cop
verter
froitr

contamination
t
n
General
Information

APPROXIMATE
REFILL
CAPACITIES

Without
oil
filter
AI4

Al5

w

Al5

M
T

AfT

MiL

A
T
Liter

US
measure

3
2
3

qt

2
8
3

qt

3

7

llLgt

33
3

qt

5
2
5

qt

5
0
5Y

qt

5
9
6
Y
at

57

6qt

1
3
2
Y

ot

1
2
2

pt

53
5

qt

0
9
1

pt

0
25

pt

50
13
Y
I

0
8
tol

Okg
1

8
to
2
2
1b

0
237

8
0
floz
Withoil

Without
heater

With

heatfr

MaDllal
soeed

5

spee

Automatic
1

1
Includes
2
7

liters
2

US

qt
2

Imp
qt
for

torque
converter

RECOMMENDED
FUEL

Use
an
unleaded
or
low
lead

gaso

line
with
a
minimum
octane

rating
of

91

RON
Research
Octane
Number
For

cars

equipp
d
with
the

Cataly

tic

converter
California
and
FU
mod

els
use

only
unleaded

gasoline
to

RECOMMENDED

Lubricant

GasOline
engine
oil

Gear
oil
Transmission

and

steering

Differential

Au
omatic

TIM
fluid

Multi

purpose
grease

Brake
and
clutch
fluid

Anti
freeze
L
NDED

LUBRICAN

COMMENDED

i

I
VISCOSITY
NUMBER

t1

NGON
0

L
J

I
j
H

I

IlL
I

t

l

I
lc
30
ItM
7

l
t

U

I
ItM
I

L
L
tJ

30

I

I
fu

JIl
inld

do

o

II

L
liOwl

1
I
I
1

10

I
I

I
I
t

I

I

j
r

I

I
J
1

21
l
1
I
71

c

DIUt
I2lItMOl
UGIIII
FI

R

NIl
I
01
a
Specifications
Remarks

APISE

API
GL4
Further
details
refer
to

recommended
SAE

viscosity
chart

API
GL
5

Type
DEXRON

NLGI
No
2
Lithium

soap
base

DOT
US
FMVSS
No
116

Ethylene
glycol
base

GI
5
Imp

meas4re

2

qt

2

qt

3Y

qt

2

it

4

qt

4

q

5Y

qt

5

qt

2Y

pt

2

pt

4

qt

I

pt

pt

II

gal

1
8
to
2
2
lb

83f1
oz

Ji

j

j

2
Loosen

belt
then
remove
fan

blade
from

torque
coupling
and

torque
coupling
and

pulley
from

hub

Air

conditioning
system
equipped

models

only

4
Remove

pump
assembly
and

gas

ket
from
front
cover

C0051

Fig
CO
3

Removing
Water

Pump

INSTALLATION

1
Be
sure
to
clean
the

gasket
sur

faces
in
contact
with

pU
flP
and
front

cover

Always
use
new

gaskets
when

installing
pump
assembly
Be

sure
to

tighten
bolts

i
l
Tightening

torque

Water

pump

securing
bolts

0
9
to
1
4

kg
m

6
5
to
10
1
ft
Ib

2
Fill

cooling
system
and

check
for

leaks
at

pump

3

InstaD
fan

pulley

spacer
or

torque

coupling
and

fan
blade

and

tighten
attaching
bolts

securely
Install

belt

and

adjust
for

specified
tension

4

Operate
the

engine
at

fast
idle

and

re

Check
for
leaks

S

Install
fan

shroud

Note

Ensure
that
clearance
between

shroud
and
fan
even
at

any

place

DISASSEMBLY

Water

pump
should
not
be
disas

sembled
Cooling

System

INSPECTION

Inspect
pump
assembly
for
the

following
conditions
and

replace
if

necessary

I

Badly
rusted

or
corroded

body

assembly
and
vane

2
Excessive
end

play
or

roughness

of

bearings
in

operation

Note
If

excessive
mechanical
seal

squeak
occurs
when

engine
is
mn

ning
use
suitable
water

pump
seal

lubricant
to

prevent
squeak

ADJUSTMENT

Check
belt
deflection
between

alternator
and

fan

pulley
by
a

force
of

10

kg
22
Ib

Fan
belt
deflection

8
to
12

mm

0
31
to
0
47
in

If

adjustment
is

necessary
loosen

bolt

retaining
alternator

adjusting
bar

to
alternator
Move
alternator
toward

or

away
from

engine
until
the

correct

tension
is

obtained

TORQUE
COUPLING

The

torque
coupling
keeps
the
fan

speed
at
2
900

rpm
rated

or
below
to

conserve

horsepower
at

high

engine

speed
It
also

helps
reduce
fan
noise
to

a
minimum

during
high
speed
opera

tion

This
unit
is
filled
with
a

special

silicone
oil
used

as
a
fluid

coupling

which
controls
the

fan

speed
Silicone

oil

can
not
be

replenished

The

torque
coupling
is
installed

only
on
the
model

equipped
with
the

air

conditioning
system
In
this
case

use
7
x
350
mm

13
78
in
diam

eter

cooling
fan

CO
3
C0052
t
Wheel

2
Disc

3

Bearing

Fig
CO

4

Torque
Coupling

REMOVAL

Lousen
fan

belt

2
Remove

fan
blade
from

torque

coupling

3
Remove

torque

coupling
from

pulley
and
water

pump
hub

by
re

moving
securing
nuts

INSTALLATION

I
InstaD
the

torque
coupling
in
the

reverse
order
of
removal

2
Install
belt
and

adjust
belt

ten

sian

DISASSEMBLY

The

torque
coupling
is
so

designed

that

it
can
not
be

disassembled

INSPECTION

Inspect
torque

coupling
for
oil

leak

age
If

necessary
replace

Cooling
System

TEM
COUPLlNG

Non
Califomia

model

equipped
with
air

conditioning

Tem
coupling
is

a

type
of
fan

coupling
which
is

provided
with
a

temperature
control

system

The
conventional

coupling
always

slips
the
fan
at

a

high

speed
under
a

constant

ratio

regardless
of
the

engine

cooling

requirement

The

slipping
ratio
of
the
Tem

coupling
however
is

properly
changed

with
the

cooling
requirement

ON
denotes
that

cooling
is

required
and
the
fan

operates
up
to

about
2

900rpm
When

high
cooling
is

not

required
during
cold
season
with

the

engine
warmed

up
etc
the

oper

ation

is

placed
under
OFF
condition

and
the
fan

slips
at
about
2

050

rpm

The
coiled
bimetal
thermostat

installed
on
the
front
center

portion
of

the
Tem

coupling
detects

temperature

of
air

passing

through
the
radiator

The
air

temperature
is

directly

relative

to
the

engine
coolant

tempera

ture

and
the
inside
slide
valve

is

opened
or

closed
as

required
and
thus

the
ON
OFF
control
is

performed

When
the
air

temperature
rises

the

bimetal
is

expanded
and
the
valve
is

opened
silicone

oil
is
forwarded

to
the

groove
that

transmits

torque
and
the

system
is

placed
under
ON

con

dition

When

the
valve
closes
silicone
oil
is

not

supplied
to
the

groove
oil
in

the

groove
is
accumulated

on
the
Tem

coupling
periphery
due
to
the
centrifu
1
Bi
metal

thermostat

2

Slide
valve

3

Reserve
chamber

fOl
OFF

4

Bearing

5

Coupling
part
labyrinth

6
Driven

part

C0130

Fig
CO
5

Tem

coupling

gal
force
and
led
into

the
reserve

chamber
Now
oil
is
eliminated
from

the

groove
and
the

system
is

placed

under
OFF
condition

With
this

system
when
fan

cooling

is

not

required
the

output
loss

IS

miniinized
and
noise
can
be
far

reduced

Q

i
tionalCOUPling

WATER
PUMP

SPEED

Q

ON

OFF

Tem
coupling

WATER
PUMP

SPEED

C0029

Fig
CO

6
Characteristic

of

Tern

coupling

I

SPECTION

Check
Tem

coupling
for

oil

leakage

or
bend
of
bimetaL

If

the
above

symptoms
are
found

replace
it

with
a
new
one
as
an

assembly

CO
4
THERMOSTAT

REMOVAL
AND

INSTALLATION

I
Drain

cool
nt

partiaUy

2

Disconnect

upper
radiator

hose
at

water

outlet

3

Disconnect
air

hose
for

air

injec

tion

systein
at
check
valve

Fxcept

FU

models

4

Loosen
belt

for
air

injechon

system
by
loosening
idler

pulley
se

curing
nut

and

adjusting
bolt

Except

FU
models

CD
@
ID

I

2

3
C0053

Idler

pulley

Nut

Water
outlet

Fig
CO
7

Disconnecting
Air
Hose
and

Loosening
Belt

Except
FU
models

5
Loosen
bolts
and
remove
idler

pulley
bracket

Except
FU
models

6
Disconnect
air

induction

pipe

FU
models

7
Remove

bolts
and
remove
water

outlet

gasket
and
thermostat
from

thermostat

housing

I

Thermostat

2
Air
check
valve

Except
FU
models

3
Water
outlet

Fig
CO

Removing
Thennostat

8

After

checking
thermostat
rein

stall
with
a
new

housing
gasket
in

place

9
Reinstall
water
outlet

Front
Axle
Front

Suspension

SERVICE
DATA
AND
SPECIFICATIONS

GENERAL
SPECIFICATIONS

COIL

SPRING

Models

equipped
with
air

conditioning
Models
not

equipped
with

air

conditioning

10
5
x
100
x

375

0
413
x
3
94
x
1476

1
62
90
7

Spring
constant
kg
mm

Ib
in
10
8
x

100
x

375

0
425
x
3
94
x
1476

1
65
92
4
Dimension
A
x

C
x

L

AxCxL

Wire
diameter
mm

in
x

Coil
diameter
mm
in
x
Free

length
mm
in

STRUT
ASSEMBLY

Shock
absorber
type

Piston

rod
diameter
mm

in

Piston
diameter
mm
in

Stroke
nun
in

Damping
force
at
0
3
m
1
0
ft
sec

Expansion
kg
Ib

Compression
kg
Ib
Double

acting
hydraulic

20
0
79

30
1
18

164
6
46

30
to
40
66
to
88

17
to
23
37
to

51

STABILIZER
BAR

Bar
diameter

Identification
mark
mm

in
20
0
79

Red

INSPECTION
AND
ADJUSTMENT

WHEEL
ALIGNMENT
Unladen
1

Kingpin
inclination

Turning

angle
of
front
wheel

Inside

Outside
mm
in

degree

degree
0
to
1030

j040
to
3010

1055
t9
3025
2

I
to

3
0
04
to
0

12

6
30
to

13

70
SO
to
9020
Camber

Caster
degree

degree

Toe
in

degree

degree
380
to
420

31
io
to
35
i0

I
Tankful
of
fuel
radiator
coolant
and

engine
oil

Spare
tire

jack
hand
tool
and
mats
in

designed
position

2
For

Wagon
only

FA
13

DATSUN

210
Model

8310
Series

SECTIONAC

AIR
CONDITIONING

CONTENTS

DESCRIPTION

OUTLINE
OF
AIR
CONDITIONER

REFRIGERATION
SYSTEM

AIR
FLOW

VACUUM
SYSTEM

ELECTRICAL
CIRCUIT

GENERAL
SERVICE

REFRIGERANT
R
12

COMPRESSOR
OIL

MAINTENANCE

GENERAL
SERVICE
INSTRUCTIONS

SAFETY
PRECAUTIONS

EVACUATING
AND

CHARGING
SYSTEM

CHECKI
NG
FOR
LEAKS

REFRIGERANT
LEVEL
CHECK

COMPRESSOR
OIL
LEVEL
OHECK

PERFORMANCE
TEST

REFRIGERANT

LEAKS

SERVICE
PROCEDURES

FAST
IDLE
ACTUATOR

IDL
E
PULLEY
AND
COMPRESSOR

DRIVE
BELT

COMPR
ESSOR

CONDENSER

RECEIV
ER

DRIER

REFRIGERANT
LINES
I

COOLING
UNIT

EXPANSION
VALVE

THERMOSTAT

MAIN
RELAY

HEATER
UNIT

WATER
COCK
AC
2

AC
2

AC
3

AC
5

AC
6

AC
7

AC
9

AC
9

AC
9

AC
9

AC
9

AC
9

AC

1

AC14

AC15

AC
17

AC17

AC17

AC18

AC1B

AC19

AC19

AC
20

AC
20

AC
21

ACc21

AC
22

AC
22

AC
23

AC
23

AC
23
BLOWER
MOTOR

RESISTOR

AIR
CONDITIONER

CONTROL

FAN
SWITCH

MICROSWITCH

LOW
PRESSURE
SWITCH

MAGNET
VALVE

FUSE

REPLACEMENT

VACUUM
HOSE
DIAGRAM

WIRING
DIAGRAM

COMPRESSOR
MODEL
SC206

PRELIMINARY
CLEANING

COMPRESSOR
CLUTCH

SHAFT
SEAL

CYLINDER
HEAD

AND
VALVE
PLATE

DISCHARGE
AND
sU
CTiON

CONNECTORS

TROUBLE
DIAGNOSES
AND

CORRECTIONS

AIR

CONDITIONER
DIAGNOSES

BLOWER
MOTOR
DIAGNOSES

COMPRESSOR
DIAGNOSES

COMPRESSOR
CLUTCH
DIAGNOSES

VACUUM
SYSTEM
DIAGNOSES

PERFORMANCE
TEST

DIAGNOSES

PERFORMANCE
CHART

SERVICE
DATA
AND

SPECIFICATIONS

GENERAL
SPECIFICATIONS

INSPECTION
AND
ADJUSTMENT

TIGHTENING
TORQUE

SPECIAL
SERVICE
TOOLS
AC
23

AC
23

AC
23

AC
23

AC23

AC
24

AC
24

AC24

AC
24

AC
25

AC
26

AC
27

AC
27

AC
28

AC30

AC30

AC32

AC
32

AC
33

AC34

AC35

AC36

AC37

AC
41

AC
42

AC
42

AC
42

AC
43

AC
44

Air

Conditioning

DESCRIPTION

OUTLINE
OF
AIR

CONDITIONER
level
and

ventilation
functions
Its

control

system
consists

of
a
mechani

cal

system

using
cables
and

engine

vacuum
and
electric

system

The

component
units

of
the
air

conditioner
are
installed
in
the

engine

and

passenger
compartments
the
compressor
and
condenser
in

the
for

mer

and
the
unit

comprising
the

evaporator
heater
and
blower
and
i

Is

control
in
the

latter
The

units
in

the

passenger
compartment
aTe
summa

rized
as
foUows
Th

ipr
conditio
er
isa

combine4

unit

of
an

evaporator
heater
and

blower
and

provides
heating
and
cool

lng
functions
In

addition
it

has
hi

I

1
Heater
unit

2
Ventilation

door

3

Air
mix
dom

4

Air
intake
door

5

Cooling
unit

6
E

r
or

7
Blower
motor

8
Floor
door

AC377A

Fig
AC
1
Air

Conditioning
Unit
and
Air
Flow

AC
2

REFRIGERATION

SYSTEM

If

you
were
to

paint
your
rmger

with
alcohol

your
finger
would
feel

cold
This
is

because
the

liquid
alcohol

takes
heat

away
from

your

rmger

while
it

evaporates
If

a

quickly
evapo

rating
liquid
such

as
alcohol
is

placed

in
a
container
inside
a
box
the
tern
Air

Conditioning

perature
inside
the
box

will

drop
This

is

because
the

alcohol
is

evaporated

absorbing
the
heat

from
the
air

inside

the
box

If
the

gaseous
alcohol
is

collected
and
cooled

with
cold
water

it

will
be

changed
back
into
a

liquid
by

absorption
of
its
heat

by
the
cold

water

The
cooler

operates
on
this

princi

1
r
I

Outside
air

U

Condenser

r
lf
P

9

n

U

Receiver
drier

AC378A

The

operation
of
the
five
devices
of

the

refrigeration

system
are
described

below

EVAPORATOR

The
heat
of
the
inside
air
which
is

force
irculated

by
the
blower
motor

is

absorbed
by

vaporizing
the

liquid

refrigerant
passed
through
the

evapora

tor
This
cools
the
air
l

t
High
pressure

gas

I
High
pressure

liquid

Compressor

Jj

COMPRESSOR

The

compressor
is
installed
to
the

side
of
the

engine
and
is
driven

by

crank

pulley
through
a
belt
The

refrig

erant

gas
leaving
the

evaporator
is

forced
out
to
the
condenser

by
com

pressor
and
the

low

pressure
refriger

ant

gas
is

compressed
to
a

high

pres

sure
and

high

temperature

AC3
pie
The

liquid
used
is

the

refrigerant

R
12
The
heat
inside
the

passenger

compartment
is
absorbed

by
changing

the

refrigerant
from
a

liquid
to
a

gas

and

then

dissipated
to
the
outside

by

changing
the

refrigerant
from
a

gas

back
to
a

liquid

The

refrigeration
system
is
shown

in

Fig
AC
2

Low

pressure

liquid

C
J
Low
pressure

gas

Inside
air

v

n

Blower

1f
motor

Cooled
air

Fig
AC
2

Refrigeration
Cycle

CONDENSER

The
condenser
is

installed
to
the

front
of
the
radiator
The
heated
and

compressed
refrigerant

gas
from
the

compressor
condenses
to
a

liquid
by

being
cooled

by
air

passing
between

the
fins
of
the
condenser

Air

Conditioning

RECEIVER
DRIER

The
receiver

drier
rves
the

pur

pose
of

storing
tl
e

liquid
refrigerant

The
amount

of
the

liquid
refrigerant

flowing
through
the

system
varies

with

the

operating
condition
of
the
air

conditioner
To
be

accurate
the

receiver

drier
stores
excess
amount

of

refrigerant
when
the

heat
load
is

low

ered
It
also
releases

stored

refrigerant

when
additional

cooling
is
needed

thus

maintaining
the

optimum
flow
of

refrigerant
within
the

system

The
receiver

drier
includes
a
strain

er

and
desiccant

They
have
the

job
of

removing
moisture
and

foreign
parti

cles
as
the

refrigerant
circulates
within

the

system

The

pressure
relief
valve
is

installed

beside

the

sight
glass
of
the
receiver

drier

The

purpose
of
the
valve
is

to

release

preSsurized

refrigerant
vapor

into

the

atmosphere
in

the
event
of

excessive

pressure
build

up
in

the

high

pressure
line

The

pressure
relief

valve

opens

automatically
at
a

pressure
of
about

38

kg
cm2
540

psi

EXPANSION
VALVE

The

expansion
valve
restricts
the

flow
of

liquid
refrigerant
as
it

passes

through
it
and

delivers

sprayed
refrig

erant
to
the

evaporator
for

faCilitating

refrigerant

evaporation

The

refrigerani
within

the

sensing

bulb

changes
in

pressure

through
the

super
heat
condit
ion

of

vaporized
re

frigerant
gas
which
comes

out
of

the

evaporator
causing
the

deflection
of

the

diaphragm
The
lift
of
the
ball

valve

attached
to
the

diaphragm
is

changed
by
the
deflection
of

the
dia

phragm
thus

controlling
the

amount

of

refrigerant
passing
the

orifice

AC
4
To

expansion

valve

rl
From
condenser

L
J

C
d

f

@

J

f

J
4
4

1

u

lc

AC167A

1

Pressure
relief
valve

2

Sight
glass

3
Suainer

4
Desiccant

Fig
AC
3
Receiver
Drier

JD

v
t

I

Sensing
bulb

2

Diaphragm

3

Eq
ualizer
line
From
receiver
drier

4

Orifice

5
Valve
ball
To
evaporator

Fig
A
C
4

Expansion
Valve
AC423

Air

Conditioning

AIR
FLOW

Air
control
lever

1M
l

r

I
1
all
IC
1T
I

tCliO

ar

afH
7

Sidedefrostcr

duct
Defroster
nozzle

L
Jf
SOd
Fan
switch

1

7
l

t
I
Air
intake
door

r

If

Ftont
seat
flOO

i
f

t
I

J

Heater

outlet
nside
air

l

Front
seat

floor

Evaporator

i

Side
outlet

D
I
I

IIll
91
i

Side
outlet

Center
udet

r2
D

I

Air
control
Air
mix

door

Ventilation

Blower
Compressor

Air
intake
door

and
Floor
door
and

lever

Water
cock
door
motor

F
1
actuator

OFF
OFF

AIC
Inside
air
100

Open
Closed
ON

VENT
Outside
air
100

Open
Closed
OFF

B
L

Outside
air
100
Controlled

by

0

Open
Open
OFF

temperature
ON

HEAT
Outside
air
100

lever
Closed

Open
OFF

DEF

Outside
air
100

Closed
0

Open
OFF

REC
HEAT
Inside
air
100
Closed

Open
OFF

AC379A

Fig
AC
S
Air
Flow

AC
5

VACUUM
SYSTEM

MAGfilET
VALVE

The

magnet
valve
is

located
be

tween
the

fast
idle
actuator
and

the

intake
manifold
vacuum

con

nector

Valve

cloaed

When
current
to
the
coil
is
inter

rupted

passage
on
the
intake
mani

fold
side

closes

leaving
the

actuator

side

line

open
to
the

atmosphere

Actuator

side

j

I

i

r
1
Filter

2
Return

spring

3
Coil

AC175A
4

Valve

Intake
manifold
side

Fig
AG
6

Magnet
Valve

Glosed

Velve

open

While
the

magnet
valve
coil
is

energized
by
an
electric
current
it

holds
the
valve
needle
in
the

raised

position
and
vacuum
is

imposed
on

the

vacuum
actuator
from
the
intake

manifold
Air

Conditioning

Actuator
side

AC176A
Intake
manifold

side

Fig
AG
7

Magnet
Valve

Open

FAST
IDLE
CONTROL

DEVICE
F
I
C
D

FAST

IDLE
ACTUATOR

The
fast

idle
control
device
in

creases

engine
idle

speed
so
that
the
air

conditioner
continues
to
cool
the

pas

senger
compartment
even
when
the

car

is
at
a

standstill

The
device
is
a
vacuum
actuator

and
is

equipped
with
a

diaphragm
The

diaphragm
deflects
when
vacuum

pres

sure
is

applied
and
as
a
result
the

operating
wire
attached
to
it
is
moved

The

operating
wire
is
connected
with

the
carburetor
throttle
lever
When

the

vacuum

pressure
acting
on
the
dia

phragm
is
lost
the

diaphragm
is

reo

turned
to
its

original
position

AC
6
1

Adjusting
screw

2
Lock
nut

3

Diaphragm

AC266A

Fig
AG

B
FlUI
Idle

Actuator

INTAKE
ACTUATOR

The
intake
actuator
is

actuated

by

the

intake
vacuum
or
the

atmospheric

air
introduced

by
turning
on
or
off
the

vacuum
switch

thereby
opening
or

closing
the
intake

door
The
intake

port
for

atmospheric
air
is

located
on

the
vacuum

switch

The

check
valve

is

a
one

way
valve

and
it

prevents

negative
pressure
from

passing
through
it

except
when
the

pressure
at
the
actuator
side
is

higher

than
at
the

intake
manifold
side

thus

eliminating
the
variation
in

opening
or

closing
the
intake
door

due
to
the

variation
in
the

engine
manifold
vacu

urn