1979 DATSUN 210 check engine light

4
Bolt
converter
to

drive
plate

Note

Align
chalk
mark

painted
a

cro5S
both

parts
during
disas

sembling
p

S
After
converter
is

installed
rotat

r
nkshait
veral
turns
and

check
to

be

sure
that
transmission

rotates
freely

without

binding

6

Pour
recommended
automatic

transmission
fluid

up
to
correct
level

through
oil

charge
pipe

7
Connect
manual
lever
to
shift

rod

Operation
should
be
carried
out

with
m
mual
and
selector
levers
in

N

8

Connect
inhibitor
switch
wires
Automatic
Transmission

NOte

a
Refer

to

page
AT40
for

Checking

and

Adjusting
Inhibitor
Switch

b

Inspect
end

edjust
switch
as

abo

whe
ever
it
has

to
be
removed
for

servi
e

9

Check
inhibitor

switch
for

op

eration

Starter
should
be

brought
into

op

eration

only
when
selector
lever
is
in

P
and
N

positions
it

should
not

be
started
when
lever
is
in

D
n

and
Ru

positions

Back

up

lamp
should
Iso

light

when
selector
lever
is

placed
in
R

position

10
Check
level
of
oil
in

transm

sion
For
detailed

procedure
see

page

AT39

AT

26
II
Move

selector
leve

through
all

positions
to
be

sure
that
transmission

operates
correctly

With
hand

brake

applied
rotate

engine
at

idling
Without

disturbing

the
above

seUlng
move
selector

lever

through
N

to
D
to
2

to
I

and
to

R
A

slight
shock
should
be

reU

by

handgripping
selector

each

time
transmission

is
shifted

Note
See

page
AT40
for

Checking

Engine
Idling
Revolution

12
Check

to
be
sure
that

line

pres

sure
is

correct
To
do
this
refer
to

page
AT
43
for
Line
Pressure
Test

13

Perform
stan
test
as
described
in

page
AT41

Place
the
vehicle
in
a

pit
and

by

sampling
the
lealeed
oil
deiermine
if
it

is
the

torque
converter
oil
The

torque

converter
oil
has

a
color
like
red
wine

so
it
is

easily

distinguished
from

engine

oil
or

gear
oil

Wipe
off
the

lealeing
oil
and

dust

and
detect
the

spot
of
ill

lell8e

nonflammable

organic
solvent
such
as

carbon
tetrachloride
for

wiping

Raise
the
oil

tcmperature
by

op

erating
the

engine
and
shift
the
lever

to
D

to
increase
the
oil

pressure

The
sp

Q
of
o
1

1I8
u

J1en
be

found
more

easily

Note
As

oil

leakage
from
the
breath

er
does
not
talee

place

except
when

running
at

high
peed
it

iSimpos

sible
to
ate
this

lealcage
with

vehicle

stationary

CHECKING
ENGINE
IDLING

REVOLunON

The

engine

idling
revolution
should

be

properly
adjusted

If
the

engine
revolution
is

too
low

the
e

gine
does
not

operate
smoothly

and
if
too

high
a

strong
shocle
or

creep
develops
when

changing
over

from
ON
to

Dn
or
R

CHECKING
AND

ADJUSTING

KICK

WN

SWITCH

AND

DOWNSH
FT

SOLENOID

When
the
Ieickdown

operation
is

not
made

properly
or
the

speed

chang

ingpoint
is
too

high
check
the
kick

down
switch
downshift
solenoid

and

wiring
between
them
When
the

igni

tion

Ieey
is

po
iti
ned
at
the
1st

stage

and
the
accelerator

pedal
is

depressed

deeply
the
switch

contact
hould

be

closed
and
the
solenoid
should
clicle
If

it
does

not
click
it

indicates
a
defect

Then
check
each

part
with
the

testing

inatrumen15
Auto
lT1atic

Transmissiqn

Fi
J
A
T
84
Down

ltift

Sole
id

Note
Watch
for
oil

leekage
from

tnnsmission
case

INSPECTION
AND

ADJUSTMENT
OF

MANUAL

LINKAGE

The

adjustmcnt
of
manual

linkage

i

equany
important
as

Inspection
of

Oil
Level
for
the
automatic
transmis

sion
Therefore

great
care

should
be

cxercised
oecause

incorrect

adjustment

will
result
in
the

breakdown
of
the

transmission

Inspection

pun
the
selector
lever
toward

you

and
turn
it
as
far
as
p
to

range

where
clicks
will
be
ell

by
the
hand

This
is
the

detent
of
manual
valve
in

the
valve

body
and
indicates
the

corrett

position
of
the
lever

Inspect
whether
the

pointer
of

selector
dial

corresponds
to
this

point

and
also
whether
the
lever
comes
in

alignment
with
the

stepping
of

posi

iion

plate
when
itis
released

CHECKING
AND
ADJUSTING

INHIBITOR

SWITCH

The
inhibitor
switch

lights
the

re

verse

lamp
in
the

range
R

of
the

transmission

operation
and
also
rotates

the

starter
motor
in

the

ranges
N

and
P

AT
40
i

j

tI

IlV

@

@

AT

I

Inhibitor
switch

2
Manual
shaft

3
Washer

4

Nut

5
Manual

plate

Fi
J
AT
85
Comtruction

of
Inhibitor

Switch
6
Nut

1

Washer

8

Inhibitor
wilch

9

Ran
q
Iect
lever

Check
w

ethcr
he
leverse

lal
1p

and

the
starter
motor

operate
nonnal

Iy
in
these

ranges
If
there
is

any

trouble
first
check
the

inkage
If
no

defect
is

fo
nd
in

the

Ii
leage
check

tlie

inhibitor
Swi
ch

Separate
the
manual

lever
from
the

remote
control
selector
rod
and
turn

the

range
select
lever
to
N

Note
In
the

position
N

the
slot
of

the

manual
shaft
is
vertical

Using
the
tester
check
the
two

black

yellow
BY
wire

from
the
in

hibitor
switch
in

the

ranges
N
and

p
and
the
two
red
blacle
RB
wires

in

the

lange
R
for

continuity
Turn

range
select
lever
in

both
directions

from
each
lever

set

position
and
check

each

continuity
range
It
is

normal
if

the

electricity
is
on
while
the
lever
is

within
an

angle
of
about
30

on
both

sides
from
each
lever
set
line
How

ever
if
its

continuity
range
is

obvioUs

ly
u
nequal
on

both
sides

adjustment
is

required

If

any
malfunction
is

found
un

screw
the

fastening
nut
o
the

range

selector
lever
and

two

fastening
bolts

of
the
switch

body
and
then

remove

the
machine
screw

under
the
switch

body
Adjust
the
manual

shaft
correct

Iy
to
the

position
N

by
means
of

the

selector

leVer

When
the
slot
of
the

shaft
becomes
vertical
the
detent

worles
to

position
the
shaft

correctly

with
a

clicking
sound

Move
the
switch

slightly
aside

so

that
the

scie
hole
will
be

aligned

Engine
Control
Fuel

Exhaust

Systems

8

Remove
front

exhaust
tube

from

exhaust
manifold

NON
CALIFORNIA
MODELS

EXCEPT
FU
MODEL

I

Temporarily
loosen
nuts

securing

front
exhaust
tube

assembly
to

ex

haust
manifold

2
Remove

front
exhaust
tube

as

sembly
from
exhaust

mounting
brack

et

3

Temporarily
loosen
bolts

securing

exhaust

mounting
insulator

to

body

and
remove
bolts

securing
muffler

lower

clamp
and
muffler
to

muffler

upper
clamp

4
Remove
exhaust
tube

clip

5
Break
sealant
off
the
front

tube

to

rear
tube
connection

Note
A

sealant
is

applied
to
the

tube

connections
to
eliminate
the
leak

age
of
exhaust

gases
Observe
the

procedures
outlined
later
in
this

section
as
a

guide

6
Remove
front
tube
from
exhaust

manifold

then
remove
rear
tube

from

car
Refer
to

California
Models
and
FU

Model
for

removal

When

disconnecting
the

exhaust

tube
connections
observe
the

follow

ing
parts

I
Break
old

sealant
off
the

con

nection

by
lightly
tapping
around
the

tube

with
a

hammer
and

twisting

muffler

F

E630

Fig
FE
11

Breaking
Sealant

Fig
FEd
2
2

Using
a
rubber
hammer

tap
on

the

front
end
of
the
muffler
while

pushing
it

toward
rear
The
muffler

assembly
can
then
be
taken
out

FE632

Fig
FE
13

Tapping
Muffler
with

a
Rubber
Hammer

INSPECTION

I
Check

pre
muffler
muffler

as

sembly
and
tubes
for

cracks

damage

or
corrosion

Replace
if

necessary

2

Replace
bracket
and

mounting

rubber
that

are
cracked

fatigued
or

sweated

INSTALLATION

Install
exhaust

system
which
has

been
removed
as
an

assembly
in
re

verse
order
of
removal
Observe
the

following

CALIFORNIA

MODELS

AND
FU
MODEL

1Jl

Tightening
torque

Exhaust
manifold
to

front
tube
nuts

2
0
to
2
6

kg
m

14
to
19
fHb

U
bolt

housing
clamp
to

gusset
bolt

3
2

to
4
3

kg
m

23
to
31
ft
bl

U
bolt

clamp
securing
nuts

1
6
to
2
1

k
l
m

12
to
15
ft

bl

Exhaust

mounting
bracket
to

transmission

nuts

0
8
to

1
2

kg
m

5
8
to
8
7
ft

Ibl

Exhaust

mounting
bracket
to

front
tube
bolt

3
2
to
4
3

k
l
m

23
to
31
ft
Ib

FE
9
CatalytiC
converter
to
front

tube
bolts

3
2
to
4
3

kg
m

23

to
31
ft

Ibl

Catalytic
converter
to

rear

tUbe
bolts

3
2
to
4
3

kg
m

23
to
31
ft

Ibl

Exhaust
tail

mounting
bracket

to

body
bolts

0
8
to
1
2

kg
m

5
B
to
8
7
ft
Ibl

Exhaust

mounting
insulator

to
exhaust
tail

mounting

bracket
nut

0

8
to
1
2

kg
m

5
8
to
8
7
ft
Ib

Exhaust

mounting
insulator
to

rear
tube
nut

O
B
to
1
2

kg
m

5
8
to
8
7
ft
Ib

Catalytic
converter
shelter
bolts

O
B

to
1
2

kg
m

5
8
to
B
7
ft
Ib

Rear
exhaust
tube
shelter
bolts

0
3

to
0
5

kg
m

2
2
to
3
6

ft
bl

Installation

precautions

I

When

assembling
be
careful
not

to
let

gas
leak
from
around
connec

tions
of

exhaust

system
components

Evenly
tighten
nut

securing
exhaust

manifold
to
front
exhaust
tube

2

Always
maintain
sufficient
clear

ance
between
heat
shield
insulators

and

adjacent
parts
See

Fig
FE

I7

3
Be
sure
to
install
new

gaskets
and

bolts
after

removing
following
parts

Front
tube

Catalytic
converter

Rear
tube

4
Install

mounting
parts
as
sub

assembly
on
car

body

I

Always
locate
mounting
rubbers

in
such

way
that

preload
applied
to

them
is

kept
to
minimum

f

Do
not

apply
excessive
load

I

F

E289

Fig
FE
J4

Mounting
Rubbe

m
c
n
to
l
l

I
g
iF
0
1
To
side
marker
lamp
L
H

2
To
headlamp
L
H

3
To
horn
L
H

4
To
front
combination
lamp
L
H

5
To
cooler
co
pressor
Air
Con
models

6
To
oil
pressure
switch

7
To
condenser

8
To
horn
R
H

9
To
front
combination
la
t11p
R
H

10
To
side
marker
lamp
R
H

11
To
headlamp
R
H

12
To
body
earth

13
To
fusible
link

14
To
inhibitor
relay
AfT
model

15
To
aut6
choke
relay

16
To
ignition
coil

17
To
condenser

18
To
washer
motor

19
To
engine
harness
No
2
@

20
To
alternator

21
To
starting
motor

22
To
throttle
opener
solenoid
Except
FU
models

23
To
fuel
cut
solenoid
Except
FU
models

24
To
throttle
switch
FU
models

25
To
fuel
cut
solenoid
FU
models

26
To
auto
choke

27
To
VC
cut
solenoid
M
T
and
Calif
AfT
models

28
To
distributor

29
To
thermal
transmitter

30
To
body
harness

31
To
low
pressure
switcn
Air
Con
models

32
To
rear
window
washer
motor

33
To
FICO
solenoid
Air
Con
models

34
To
room
lamp
harness

35
To
cooling
unit
Air
C
on
models

36
To
heater
motor
37
To
engine
revolution
switch
FU
models

38
To
rear
wiper
switch

39
To
wiper
motor

40
To
brake
level
switch

41
To
belt
timer

42
To
horn
relay

43
To
stop
lamp
switch

44
To
kickdown
switch
AfT
model

45
To
hazard
flasher
unit

46
To
turn
signal
flasher
unit

47
To
ignition
switch

48
To
steering
lock

49
To
wiper
switch

50
To
turn
signal
and
hC
rn
switch

51
To
lighting
switch

5i
To
hazard
switch

53
To
belt
switch

54
To
door
switch
L
H

55
To
hand
brake
switch

56
To
automatic
transmission
control
indicator

AfT
models

57
To
instrument
harness

58
To
check
connector
I
0
i
a

z
Z
G
z

tIl
tIl
a
Z
Il
I
to

o
Co
m
16

n
n
OJ
1
3

B6

Y
Electrica

System

f
EIIII
I
I
I
11111111
111

777
Rea

window

1

j
glass

W
777
n
1
r7

U
u
T
t
I
I
I

j
T

cD

t
ID

3
BE537

Method
2

Start

engine
and

turn
on
window

defroster

system
With
a
direct
current

voltmeter

setup
as
shown
in

Fig

BE

51
check
each
heat

wire
for

dis

continuity
lfmeter

indic
ates
12

Y9lts

or
0

on
a

specific
wire
that

line
is

broken
Normal
indication
6

volts

Break
in

that
line
can
then
be

detected

by
moving
positive
lead

of

meter

along
line

until
an

abrupt
varia

tion

in
meter

indication
is

encoun

teredo

Fig
BE

51

Method
3

With
an
ohmmeter

setup
as
shown

in

Fig
BE
52

place
one
lead
at
one

end

of
a

heat
wire

and
the
other
in

the

middle
section
of
that
wire
If
meter

registers
on
a

specific

grid
line
a
value

twice
as

much
8S
on

any
other
line

that
line
is

broken

A

break
in
tha
t
line
can
then

be

located

by
an

abrupt
variation
in

meter
indication

as
test
lead

moves

along
broken
heat

wire
Defogged
area

Broken
heat
wire

Fogged
area

Fig
BE
50
Broken
Filament

n

I

I

SE539

Fig
BE
52

Checking
for
Broken

Filament
with

phmmder

FILAMENT

MAINTENANCE

Repair
equipment

I

Conductive
silver

composition

Dupont
No
4817

2

Ruler
30
em
12
in

long

3

Drawing
pen

4

Heat

gun

5
Alcohol

6
Cloth

Repair
procedure

I

Wipe
broken
heat
wire

and
its

surrounding
area
clean

with
a

cloth

dampened
in

alcohol

2

Apply
a

small

amount
of
conduc

tive
silver

composition
to

tip
of

draw

ing

pen

Note
Shake
silver

composition
con

tainer
before

use

3
Place
ruler

on

glass

along
broken

line
to
be

repaired

Deposit
conductive

silver

composition
on

break
with
draw

ing
pen

Slightly
overlap
existing
heat

wire
on

both
sides

preferably
5

mm

0
20
in

of
the

break

BE
22
88

N
N

cci

4

r
reak

Heat
wire

I

I
L
r

GJ

I
Ruler

BE540
Ora

wing
pen
Unit
mm

in

Fig
BE
53

Pmitioning
Ruler

4

Wipe
clean
silver

composition

from

tip
of

drawing
pen

5
After

repair
has
been

completed

check

repaired
wire

for

continuity

This
check
should
be
conducted
10

minutes
after
silver

composition
is

deposited

Note
Do
not
touch

repaired
area

while
test
is

being
conducted

Drawing
pen

Rear

window

1

Heat
wire

2

Silver

composition

3
Ruler
@

iI

aE541

Fig
BE

54

Depositing
Silver

Compo
ition
in
Place

6

Apply
a

consla11t
stream
of
hot

air

directly
to
the

repaired
area
for

approxUnately
20
minutes

with

a
heat

gun
A
minilnum

distance
of
3

em
1
2

in

should
be

kept
between

repaired

area
and
hot
air
outlet
If

a
heat

gun
is

not
available
let
the

repaired
area

dry

for
24
hours

After

repair

Wipe
repaired
area
clean

with
a

soft
clean
cloth

Note
Do
not
use
a

cleaning
solvt
nt

containing
much

soapy
water

Body
Electrical

Sy
tem

Oil

pr
re
charg
and
brake

warillng

Condition

Lamp
does
not

glow

when

ignition
switch

is

turned
ON
with

out

running
engine

Door
and

charge

warning
lamps
do
not

go
out
when

engine
is

started

Charge
waming
amp

Lamp
does
not

go
out

when

engine
is
started

Oil

pressure
warning

lamp

Lamp
does
not

light

when

ignition
switch

is

set
to

ON

Lamp
does
not

go
out

while

engine
is

being

operated

Brake

warning
lamp

Lamp
does
not

go
out

Door

warning
lamp

Lamp
does
not

glow

with
door

opened
and

engine
running
Probable
cause

Burnt
bulb
or

loo
ebulb

Loose
or

poor
connection

Faully
bulb
check

relay
or
alternator

Faully
charging
system

Faully
oil

pressure
switch

or
loose

switch

terminal
connection

When
lead
wire
connected
to

switch
is

grounded
warning
lamp
lights

Lack
of

engine
oil

Oil

pressure
too
low

Faully
oil

pressure
switch

Faulty
hand
brake

switch

When
hand
brake

lever
is

released

Faully
brake

fluid
level
switch

When
brake

fluid
level
is
normal

Faully
door

switch

BE
46
Corrective
action

Replace
bulb
or
correct

Correct

connector
terminal

contacts

Correct

adjust
or

replace

Inspect
charging
system

Replace
or

correct
connection

Check
oil
level
and
add
oil

as

required

Inspect
engine
oil

pressure
system

Replace

Replace

Replace

Replace

HALIDE
LEAK
DETECTOR

Since
the

propane
leak
detector
and

butane
leak
detector
are
the
same
in

respect
to
their

operation
this
section

describes
the

operation
of
the

propane

leak
detector

The

copper
screen
is
heated

by
the
Air

Conditioning

burning
of

propane
Refrigerant
gas

decomposes
to
color
the

flame
when
it

contacts
the
heated

screen
The

gas
to

be
checked
is
drawn
into
the

sampling

tube
and

sent
out
to
the
burner
A

refrigerant
leak
can
clearly
be

detected

by
variations
in
the
color
of
the

flame

1

Copper
reaction

plate

2
Flame

adjusting
lines

3
Burner

4

Sampling
tube

5
Strainer

6
Gas
bomb

7

Flame

adjuster

AC010

Fig
AC
22
Checking
for
Leaks
4

The
flame
will
be

almost
colorless

when
there
is
no

refrigerant
gas
being

burned
When
there
is

a
small

refriger

ant

gas
leak
the
flame
will
be

green
or

yellowgreen
When

refrigerant
gas
leak

age
is

large
the
flame

will
be
brilliant

blue
or

purple
Since
the

color
of
the

flame
will
be

yellow
when
dust
is

being
burned

or
there
is

aging
scale
on

copper
reaction

plate
always
keep
the

strainer

of

sampling
tube
and
reaction

plate
clean

5

Major
check

points

l
Compressor

Compressor
shaft
seal

rotate
the

compressor
by
hand

Flexible
hose

connections

Front
and
rear

head

gaskets

Service
valve

2
Condenser

Condenser

pipe
fitting

Condenser
inlet
and

outlet

pipe

connections

3
Refrigerant
lines

Flared
section
of

high

pressure
and

low

pressure
flexible
hoses

Une

connections

4

Evaporator
housing

Inlet
and
outlet
line
connections

Expansion
valve

Propane
type
Butane

type

ELECTRIC
LEAK
DETECTOR

NO
LEAK

Greenish
blue
Pale

blue

For
the

operational
procedures

SMALL
LEAK
Yellow

Bright
blue
refer

to
the
instructions
furnished
with

LARGE
LEAK

Purple
Vivid

green
each
electric
leak
detector

Discharge
refrigerant
in
one
or

two
seconds

to
ascertain

that

system

has

a
sufficient

pressure
needed
for

leak
detection

Charge
with
0
4

kg
0
9

Ib
of

refrigeranl
if

necessary

2

Light
leak
detector

Adjust
the

height
of
the
flame
between

flame

adjusting
lines
at
the

top
and
bottom

of
combustion
tube

A
reaction

plate

will

immediately
become
red
hot

3
Place
the
end
of

sampling
tube

near
the

point
of
the

suspected
leak
in

system

Note

a
Since

refrigerant
gas
is

heavier
than

air
small
leaks

can
be

easily
detect

ed

by

placing
sampling
tube
direct

ly
below
the
check

point
b
Suitable
ventilation
is

required
If

refrigerant
gas
is

mixed
with
the

surrounding
air
leak
detector
will

always
indicate
a

response
and

detection
of
the
actual
leak
will
be

difficult

c
Never

hold
leak
detector
at
an

angle

WARNING

a
Never
inhale
the
fumes

produced

by
combustion

of

refrigerant
gas

since

they
are
toxic

b
Never
use
halide
torch
in
a

place

where
combustible
or

explosive

gas
is

present

AC
15
REFRIGERANT

LEVEL
CHECK

SIGHT

GLASS

Sight
glass
is

provided
at
the

top
of

receiver

drier
One

guide
for
whether

there
is

enough
refrigerant
in

syst
m
is

given
by
observing
refrigerant
flow

through
sight
glass
However
this

method
is
unsuitable
for

judging
the

aJTlount
of

refrigerant
The
correct

refrigeranl
level
can
be

judged
by

measuring
the

system
pressures
in

ac

cordance
with
the

procedures
as
de

scribed
in
Performance
Test

1

Start
the

engine
and
hold

engine

speed
al
1

500

rpm

2

Set
AIR
lever
to

AlC

position

I

I

3
Set

temperature
lever
to
max

imum

cold

position
Air

Conditioning

4

Sefblower
to
maximum

speed

S

Check

sight
glass
after

the

lapse

Almost
no

refrigerant

Check
item

Temperature
of

high
prenure

and
low

pressure
lines
Almost
no
difference

between

high
presswc

and

lowpressufC
side

temperature

State
in

sight
gl
ltS3
Bubbles
flow
continu

ously
Bubbles
will

disappear
and
some

thing
like

mist
wiD

flow
when

rerrigel
l
llt

is

nearly

gone

AC256

Pressure
of

system
High
pressure
side
is

abnormally
low

Repair
Stop
compressor
and

conduct
an

overall

check

Note

a
The
bubbles
seen

tbrough
the

sight

glass
are
influenced

by
the
ambient

tempemture
Since
the
bubbles
are

bard
to
show

up
in

comparatively

low

tempemtures
below
200C
680

F
it
is

possible
that
a

slightly

larger
amouot
of

refrigemot
would

be
filled
if

supplied
according
to

tbe

sight
glass
Be

sure
to
recheck

the
amount
when
it

exceedS
20
C

680F
In

higher
tempemture
tbe

bubbles
are

easy
to
show

up
Insufficient

High
pressure
side
is

warm
and

low

pressure

side
is

fairly
cokt

The
bubbles
are
seen

at
intervals
of
1
2

seconds

AC257

Both

pressures
on

high

and
low

pressure
sides

are

slightly
low

Check
for
gas

leakage

repair
as

required
re

plenish
and

chaxge

system

b
Wben
the
screen
in
tbe
receiver

drier
is

clogged
tbe
bubbles
wiD

appear
even
if
the
amount
of

refrig

erant
is

nonnaL
In
this
case
tbe

outlet
side

pipe
of
tbe
receiver
drier

becomes

considembly
cold

AC
16
of

abOut
five
rilintJtes

Jullgeaccording

to
the

following
table

Suitable
Too
much

refrigerant

High
pressure
side
is

hot
and
low

pressure

side

is
cold
High
pressure
side
is

abnormally
hot

Almost
transparent

Bubbles

may
appear

when

engine
speed
is

raised
and
lowered
No
bubbles
can
be
seen

No
clear
difference
exists
these
two

conditions

nl

AC258

Both

pre55ures
on

high

and
low

pressure
sides

are

normal
Both

pressures
on

high

and
low

pressure
sides

are

abnonnally
high

Discharge
refrigerant

from
service
valve
of

low

pressure
side

PERFORMANCE
TEST

Check
for
the
amount
of

refrigerant

in
the

system
can
be
made

by
meas

uring
pressure
on

discharge
side

The
correct
amount
of

refrigerant
is

in

the

system
if

pressure
on
the

discharge
side
i
within
the

specified

range
For
details
refer
to
Trouble

Diagnoses
and
Corrections
for

per

fannance
test

Overcharging
will
show

up
in

higher

presstJre
on

discharge
side