1979 DATSUN 210 Transmission

REFRIGERANT
R
12

The

refrigerant
used
in
the
air

conditioner
is

generally
called
Re

frigerant
12
R
12
No
other

refrig

erant
than
the
above

refrigerant
should

be
used

Note
Exercise

care
when

handling
re

frigerant
as
it
is

stored
under

high

pressure

COMPRESSOR
OIL

The

SUNISO
5GS

refrig
ration

lubricant
should
be
used
to
assure
the

successful

compressor
operation
Use

of
oils
other
than

recommended
or

mixing
of

the
oil
with

other
oils
would

cause
chemical
reaction

or
lead
to

lowered

viscosity
or

deficient
lubrica

tion

The
oil

absorbs
moisture

as
it
con

tacts
the
air

This

points
out
the
need

for

care
not
to

expose
it

to
atmos

phere
for

an
extended

period
of
time

MAINTENANCE

The

following
checks
and
main

tenance
are

especially
important
to
the

air
conditioner

I

Check

refrigerant
level

2
Check

refrigerant
leaks

3
Check

compressor
drive

belt
for

proper
deflection

4

Even
in

the
off
season
turn
the

compressor
for
10
minutes

at
least

once
a
month

by

running
the

engine
at

1

500

rpm

GENERAL

SERVICE

INSTRUCTIONS

If
dirt
water
or
air
enters

the
air

conditioner

system
it

will
be

seriously

affected
Be

sure
to
observe

the

following

I

Always
keep
the

working
place

clean

and

dry
and
free
from
dirt
and
Air

Conditioning

GENERAL
SERVICE

dust

Wipe
water
off
from
the
line

fittings
with
a

clean
cloth
before
dis

connecting

2

Have
all

necessary
tools

in

prepar

ation
beforehand

and
have
tools
clean

and

dry

3

Handling

plug
when

the

system

line
is

disconnected

4

Handling

compressor
oil

For
details
refer
to
each

descrip

tion
in
this

manual

SAFETY

PRECAUTIONS

WARNING

1
Since
direct
contact
of
the

liquid

refrigerant
with

your
skin

will

cause
frostbite

always
be
carelul

when

handling
the

refrigerant

Always
wear

goggles
to

protect

your

eyes
when

working
around

the

system

2
The

refrigerant
service
container

has
a
safe

strength
However
if

handled

incorrectly
it
will
ex

plode
Therelore

always
follow

the
instructions
On
the

label
In

particular
never
store
it
in
a
hot

location
above
520e

1260F

or

drop
it
from
a

high
height

3
The

refrigerant
gas
is
odorless

and
colorless
and

breathing

may

become
difficult
due
to
the
lack

of

oxygen
Since
the

relrigerant

gas
is
heavier
than
air
and

will

lay
close

to
the
floor

be

espe

cially
careful
when

handling
it
in

small
confined

spaces

4
The

refrigerant
itself

is
nonflam

mable
However

a
toxic

gas

phosgene
gas
is

produced
when

it

contacu
fire
and

special
care
is

therefore

required
when
check

ing
for

leaks
in
the

system
with
a

halide
torch

5
Do
not
steam
clean
On
the

sys

tem

especially
condenser
since

excessively
high
pressure
will

build

up
in
the

system
resulting

in

explosion
of
the

system

The

above

precautions
are
essen

tial

in

handling
of

Refrigerant

12
and
their
strict
observation

AC
9
requires
sufficient

training

Therefore
it
is
of
first

impor

tance
that

any
other

personnel

than
a
well
trained
serviceman

should
not
be

allowed
to
handle

the

refrigerant

EVACUATING
AND

CHARGING

SYSTEM

During

servicing
use
caution
to

keep
air

from

getting
into

refrigerant

When
air

enters
the

system
all

refriger

ant
must
be
evacuated

from

system

prior
to

charging
new

refrigerant
Air

in

refrigerant
has
the

following
delete

rious
effects

1
Since
the
condensation

tempera

ture
of

the
air
is

extremely
low
the
air

will
not

be
condensed
when

refrigerant

gas
is
condensed
in
the
condenser

and

the
air

will
thus
remain
in

gaseous

fonn

Consequently
the
effective

thermal
transmission
area
of
condenser

for

refrigerant
gas
will

be
reduced
and

refrigerant
gas
to
be

condensed
will

be

reduced
The

pressure
rise
will
become

proportional
to
the
volume

of
the
air

in

system

2
When
air
and

refrigerant
are

r
tixed
in

system
a

chemical
reaction

will
be

produced
and

hydrochloric

acid
which
will

adversely
affect
the

aluminum

copper
iron
and
other

materials
in

system
may
be

generated

HANDLING
MANIFOLD

GAUGE

The

pressure
at
the

high
and
low

sides
of

system
should
be
measured

when

evacuating
and

charging

refrig

erant
and
when

diagnosing
trouble
in

the

system
The
manifold

gauge
is
used

for
these

purposes
A

manifold

gauge

has
two

pressure

gauges
a
low

pressure

gauge
and
a

high
pressure

gauge
These

gauges
are

connected
to
the

high
and

low
side
service

valves
of

system

through
flexible

charging
hoses
The

construction

of
manifold

gauge
is

for
Leaks
Here
is

how
leaks

are

stopped

I

Check

torque
on

the
connection

fitting
and
if
too
loose

tighten
to
the

proper
lorque
Check
for

gas
leakage

with
a
leak
detector
Air

Conditioning

2
If

leakage
continues

ven
after

the

fitting
has
been

retightened
dis

charge
refrigerant
from

system
disc
on

net

the

fittings
and

check
its

seating

face

for

damage

Always
replace
even

if

damage
is

slight
J

Check

compressor
6il

and
add
oil

if

required

4

Charge

refrigerant
and
recheck

for

gas
leaks

If

no
leaks
are
found

evacuate

and

charge
system

SERVICE
PROCEDURES

FAST
IDLE

ACTUATOR

ADJUSTMENT
OF

IDLE
SPEED

Engine
model

Transmission
When

A
C
is
OFF
When
A
C
is
ON

F

LCD
is

actuated

Manual

700

rpm
800

rpm

A14
A15

Automatic
650

rpm
800

rpm

at
D

position
at
N

position

The
fast
idle

control
device
is
used

on

cars

equipped
with

an
air

condi

tioner
to
raise
the

idle

speed
auto

matically

Use
the

following
procedures
when

adjusting

1
Run

engine
until
it

reaches

oper

ating

temperature

2

With
air
conditioner
in

OFF

when

compressor
is
not

operated

make

sure
that

clearance
e
between

levers
A
and

8
is

more
than

J
mm

0
12
in

If
clearance
C
is

less
than

J

mm
0
12
in

loosen
cable
lock

screw
and

push
down

on
lever
A

so

that
clearance
C
is

more
than
J
mm

0
12
in

3
Make
sure

that

engine
is
at
cor

rect
idle

speed

4

With
air

conditioner
in

ON
when

F

LC
D
is
actuated

set

engine
speed

to
800

rpm
using

following
procedures

as
a

guide

I
Turn

adjusting
screw
until
en

gine
speed
is
800

rpm

On
cars

equipped
with
automatic

transmission

make
this

adjustment

with
shift
control
lever
in

N

posi

tion
2
If

engine
speed
cannot
be

adjust

ed

properly
with

adjusting
screw

check
and

adjust
clearance
e

again

3

Depress
and
release
accelerator

pedal
several
times
and
make

sure
that

engine

speed
reduces
to
800

rpm
as

pedal
is

released

If
correct

adjustment
is
not
made

repeat

steps
I
to
3
above
until

engine
speed
is

800

rpm
at

idling

1

FlCD

adjusting
screw

2
Lever
A

3
Lever
B

4

Cable
lo
k

screw
Clearance

e

AC381
A

Fig
AC
24
Fast
Idle
Actuotor

AC
18
REMOVAL
AND

INSTALLATION

Remove

vacuum
hose
from
actua

tor

2

Remove
air

cleaner

assembly

3

Remove
cotter

pin
and

pin
and

disconnect

actuator
from
F

LC
D

lever
connected

to
throttle
shaft

4

Remove

actuator

attaching
nuts

then
remove
actuator

5
Install

actuator
in

the
reverse

order
of
removal

6
After

installing
adjust
actuator

Refer
to

Adjustment
of

Idle

Speed

r

Air

Conditioning

SERVICE
DATA
AND

SPECIFICATIONS

GENERAL

SPECIFICATIONS

Compressor

Model

Type

Displacement

Cylinder

Bore
x

stroke
cc
ell
in

rev
SC206

Yoke

100
6
10

mm
in

47

6
x
28
1

1
874
x
1
106

Clock
wise

View
from
drive
end
Direction
of
rotation

Lubrication

oil

Type

Capacity
in

refrigeration

system
cc
US
11

OZ

Imp
11
oz
SUNISO
5GS

237
8
0
8
3

Refrigerant

Type

Capacity
kg

lb
R
12

0
8
to
1
0
1

8
to
2
2

INSPECTION

AND
ADJUSTMENT

Belt

tension

mm
in

kg

lb

Fan

belt

applied
pressure
8
to
12

0
31
to
0
47

10
22

8
to
12

0
31
to
0
47

10
22
A
C

compressor
belt

applied
pressure

F
I
C
D

adJustment

Automatic
700

rpm

650

rpm

at
Du

position
When

AlC
is

ON

F

LC
D
is

actuated

800

rpm

800

rpm

at
Nu

position
Engine
model
Transmission
When

AlC
OFF

Manual

AI4
AI5

Clutch
hub
to

pulley
clearance
mm
in

0
4
to
0

6
0

016
to
0
024

AC
42

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