change time DATSUN 210 1979 Service Manual

PRECAUTION

Before

assembling

engine
observe

following
precautions

I
Clean

all

disass
mbled

parts
with

clean
solvent
All
611
holes
in
crank

shaft

camshaft
valve

rocker
shaft
etc

should

be

thoroughly
cleaned
to
re

move
all

traces
of

grinding
chips
or

lint

Always
use
clean
solvent

2
In

general
used

gaskets
packings

and
oil

seals
should
be

replaced

3

Under
no
circumstances

should

lockwashers

be
reuse
d

4

Place
bolts

nuts
and
woshers

back
in

their

original
parts
or
from

which

they
were
removed

5
MOst

packing
Serve
best
when

liquid

packing
is

applied
to

sealing

surfaces
When

desigiiated
use
suitable

liquid
packing
to

eliminate

possibility

of
water
oil
and

gas
leak

6
Prior

to

assemQling
all

sliding

surfaces
should
be

lioerally
oiled

7

Proper

tightening
is
essential
to

successful

performanCe
of
all
car
re

pairs
It
is

also

important
to
follow

correct

tightenig
sequence
in

pulling

up
cylinder
head
Be

on
alert
at
all

times

to
amount
of

clearance

per

mitted

8
Cleanliness
of
tools
or

parts
such

as
work

bench
used
jn

making
a

repai

is
essential

When

setting
up
a

job

every
precaution
should
be
taken
that

tools
or

parts
are
free
of

dirt
mud
and

oil
Do

not
work

in
dust

and

grit
for

they
are

primary
cause
of
wear
in

any

engine

CYLINDER

HEAD

I

Install
valve

spring
seat
Install

valve
oil
seal

by
lightly

tapping
its

head
with

a

plastic
hammer

through

Valve

Lip
Seal
Drift
KVI0104800
Engine
Mechanical

ENGINE
ASSEMBLY

m

f

if
@

@

4

1
Valve

2

Lip
seal

3
Valve

guide

4
Valve

spring
seat
EM688

Fig
EM
52

tailing
Valve

Lip
Seal

2
Insert

valve
into

valve

guide

Note
Use
care
when

inserting
valve
so

as
not
to
scratch

lip
of
oil
seal

3
Install

valve

spring
and

valve

spring
retainer

Compress
valve

pring

with

Valve
Lifter
STl2070000
and
fit

valve
collets
in

place
Release
Valve

Lifter

slowly

EM462

Fig
EM

53

Inatalling
Valve

Note

8
Do

not

interchange
valves

between

cylinders
for
their

sliding
or

seating

surfaces
have

undergone

wearing
in

or
have

been

lapped
at

assembly

forming

specific
contact
with
mat

ing

parts

b
Check
to
be

sure
that
valves

are

properly
seated
on
valve
seats

with

out

foreign

particles
stuck

in
be

tween

c
Valve

spring
is
an

uneven

pitch

type
Install

spring
facing
Wte

painted
side
to

cylinder
head

sur

face

EM

12
p

lOted

l
rJF
t
A
J

il
j

j
Wide

pilCh
l

Nallow

pitch

I

EM489

Fig
EM
54
Valve

Spring

PISTON
AND

CONNECTING

ROD

I

Assemble

pistons
piston

pins
and

connecting
rods

on
the

designated

cylinder

EM103

Fig
EM

55

Installing
Piston
Pin

EM157

Fig
EM

56

Arranging
Piaton
and

Connecting
Rod

Note

3

Piston
is

pressed
into

connecting

rod

Fitting
force
is

from
1
to

3

tons

and
aid
of
Piston

Pin
Press

Stand
KVI

01
05300
is

necessary

When

pressing
piston

pin
in

connec

ting
rod

apply
engine
oil
to

pin
and

small
end

of

connecti
8
rod

b

Arrange
so
oil

jet
hole
of

connect

ing
rod

big
end
is

directed

toward

right
side
of

cylinder
block

c

Be
Sure
to
install

piston
in

cylinders

with
notch
mark

of

piston
head

toward
front
of

engine

EF053A

Fig
EF

50

Removing
JWrneu

of

Solenoid
valve

2

Connect
rubber
hose

between

vacuum

gauge
and
intake
manifold

Note
A

quick
response
type
boost

gauge
such

as
Bourdon
s

type
is

recommended
a

mercury
type

manometer
should
not
be

used

3
Warm

up
engine
until
it

reaches

operating

temperature
Then

confirm

that

engine
idling

speed
is

specified

valve

Engine

idling
speed

Manual

transmission

700

rpm
Engine
Fuel

Automatic
transmission

in
0

position

650rpm

Note

On
automatic

transmission

models
never

race

engine
when

gearshift
lever

is
in
0

position

4
Run

engine
under
no

load
In

crease

engine
speed
to
3

000

to
3
500

rpm
then

quickly
close
throttle
valve

S
At
the
time
manifold

vacuum

pressure
increases

abruptly
to

600

rnmHg
23
6

inHg
or
above
and

then

gradually
decreases
to
the
level

set
at

idling

a

Maximum

negative
pressure

b

Operating
pressure

c

Idling
pressure

Nega
ive

pressure

EC502

Time

Fig
EF

52
Characteristic
Curve

of

T
O
C
S

6
Check
that
the
T

O
C
s

operating

pressure
is

within
the

specified
pres

sure

Specified

pressure
0
m

sea
level

end
760

mmHg
30

inHgl
atmOs

pheric
pressure

Non
Califomia

models

520
20

mmHg

20
47
0
79

inHg

California
models

560
20

mmHg

22
05

9
79

inHgl

7

I

If
it
is
lower

than
the

specified

level

turn
the

adjusting
screw
or

nut

in
the

following
direction

until
correct

adjustment
is

made

Adjusting
nut

Clockwise

2
If
it
is

higher
than
the

specified

levei
turn
the

adjusting
screw
or

nut

in
the

following
direction
until
correct

adjustment
is

made

EF
20
Adjusting
nut

Counterclockwise

Note

When

adjusting
T

O
C
S
turn

adjusting
nut
in
or
out
with
lock

spring
in

place
Always
set
lock

spring
properly
to

prevent
changes

in

set

pressure

Vo

1

Adjusting
nut

2
Lock

spring

n

EC802

EF055A

Fig
EF
53

Adjusting
Ope
llting

Pre
3ure

Note
The

operating

pressure
varies
in

proportion
to
altitude

a
When

atmospheric

pressure
is

known

operating
pressure
will
be

found

by
tracing
the

arrow
line

A
When

altitude
is

known

op

erating

pressure
will
be

found

by

tracing
the

arrow
line

B

b

When

checking
T

O

C
S

operating

pressure
note

atmospheric
pressure

and
above
sea

level
in
which

check

EC173A

Fig
EC

95

Disconnecting
Vacuum

Switching
Valve
Connector

3

Apply
parking
brake
and

keep

brake

pedal
fully

depressed

4

Check

continuity
between
two

specified
terminals
ai

function
test

connector
with

gearshift
lever
in
R

or
N

position

The

top
detecting
switch
is

func

tioning
properly
if
the

continuity
is

as

following
table

If
not

replace
the
switch

N

position
No

R

position
Yes

Note
At

idling

CAUTION

Never

race
the

engine
or
car
will

creep

r

q

EC329A

Fig
EC
96

Checking
Top

Detecting

Switch

Arr
model
Emission
Control

System

Entire

system

Non
California
AfT
models

except
Canada

1

Ensure
that
vacuum

hoses
are

properly
connected
to

their

positions

And

confirm
that

gearshift
lever
is
in

P

position

2
Disconnect

vacuum
hose
atdis

tributor

vacuum
controller

3

While

engine
cooling
wat
r

is
be

low
SOoC

1220F
race

engine
and

check
vacuum
for
distributor
If
vacu

um
is
felt
check

thermal
vacuum
valve

3

port
type

4

After

engine
is

sufficiently

warmed

up
repeat
the
above

opera

tion

In

this
case
vacuum
should
be
felt

If
not
check
thermal

vacuum
valve

Vacuu
m

switching
valve

If

spark
timing
does
not

vary
at
all

in

checking
entire

system
check
vacu

um

switching
valve
i
follows

I
Warm

up
engine

sufficiently

2

Disconnect

vacuum

switching

valve

lead
wires

3

Set

timing
light
and

keep
engine

speed
at

approximately
1

600

rpm
On

AfT
models

geaishiftlever
should

be

in

N
or
P

4

Apply
l2V

battery
voltage
to

one
of
two

lead
wires

from
vacuum

switching
valve
Then
connect
the

other
lead
wire

to

ground

At

this
time

spark
timing
should

change

appioximately
by
50

If
it
does
not

replace
vacuum

switching
valve

EC175A

Fig
EC

97

Checking
Vacuum

Switching
Valv

Thermal
vacuum
valve

3
port

type
U
s
A
models

except
FU

model

Remove

thermal
vacuum

valve
from

engine
Inhale
air
from

port
of

spark

EC32
timing
amttol

systetn
andcheck
to

sure
that

thermal
vacuum
valve

opens

or
closes
in

response
to
its

tempera

ture

Thermal

vacuum
walye

closing

temperature

Above
50
to

63
c

122
to
1450
F

Below
5
to

1SoC

41
to

64
Fl

J

EC161A

Fig
EC
98

Checking
Thermal

Vacuum

Valv

CAUTION

Do

not
allow

water
to

get
inside

the

thenna

vacuum
valve

Top
detecting
switch

M
T
models

To

check

top
detecting
switch
for

proper
ON
OFF

operation
contact

leads
of

an
ohmmeter

with
swiich

lead

wires
and
shift
transmiosion

from

TOP
to
other
forward

gear
and

vice

versa
If

switch
does
not

operate
prop

erly
replace

Continuity
of

top
detecting
switch

should
be

a
follows

Other
than

4th
and
5th
No

4th

and
5th

Yes

Note
In

checking

continuity
oCthe

switch

keep
the

ignition
switch

OFF
Otherwise
the

circuit
tester

will

get

damaged

WARNING

Never
touch

positive
and

negative

terminals
at
the
same
time
with

are
hands
Th

l
Il
d
result
in

injury

CHECKING

ELECTROLYTE
LEVEL

Remove
six
vent

plugs
and
check

for

electrolyte
level
in
each
cell

If

necessary
pour
distilled
water

CHECKING

SPECIFIC

GRAVITY

Specific

gravity
of

battery
electro

lyte
is
tested

by
a

hydrometer
If
the

state
of

charge
of

battery
is
below

70

battery
must
be

recharged
or

battery
electrolyte
concentration
ad

justed

EE473

Fig
EE
l

Charging
Condition
Engine
Electrical

System

BATTERY

The

gravity
of

electrolyte

changes

0

0007
for

every
loe

I
80F

temper

ature
Converted

specific
gravity
at

200e

680F
can
then
be
made

by

using
the

following
form
la

S20
St
0

0007
t
20

Where

St

Specific
gravity
of

electrolyte

at
tOe

S20
Specific
gravity
of

electrolyte

corrected
al
200e
680

F

t

Electrolyte

temperature

For

example
A

hydrometer
read

ing
of
1
260
at
300e
860F
would
be

1
267
corrected
to
200e
680F
indi

cating
fully
charged
battery
On
the

olher

hand
a

hydrometer
reading
of

1
220
at
lOoe

I40F
would
be

I

199
corrected
to
200e
680F
indi

cating
a

partially
charged
battery

The
state
of

charge
of

battery
can

e
determined

by
the

following
table

if
the

specific
gravity
of

electrolyte
is

known
Before

checking
be
sure
that

cells
are
filled
to
correct
level
Converted

specific

gravity
S20

l
301

l

Z
L2

I

1

2
I

Ii

8
1

24

E

1

22

2
t
2e

u

1

18

c

i
1
161

1
141

2
1
12

Q

1
10

I

to

0

to
20
30

40
50

14
32

50
68
86
104
122

EEOO3

Electrolyte

temperature
Oc
OF

Fig
EE
3
Conversion

of
Specific

Gravity

BATTERY

FREEZING

Battery
electrolyte

freezing
point

varies
with
acid
concentration
or
its

specific
gravity
A

battery
with
an

insufficient

charge
will
freeze
al
lower

temperatures
If

specific
gravity
of
a

battery
falls
below
1
I

this
is

an

indication
that

battery
is

completely

discharged
and
will
freeze

readily

when

temperat
res
fall

below
freezing

Note

Use
extreme
caution
to
avoid

freezing
battery
since

freezing
will

generally
ruin
the

battery

1

u
B
I

r
eleYel
60
76

Ji
I
k

E

I
I
d

8
70
94

80
112
I

I
f

1

Thermal

gauze

1
00
1

08
1
16

1
24

1
32

2

Hydrometer
1

04

1
12
1
20
1
28

EE001

Specific
gravity
of

electrolyte

EE004

Fig
EE
2

Checking
Specific
Gravity
Fig
EE
4

Freezing
Point

of
Electrolyte

EE
2

Condition

Clutch

slips

Clutch

drags
Clutch

TROUBLE

DIAGNOSES
AND

CORRECTIONS

Probable

cause
and

testing
Corrective
action

Slipping
of
clutch

may
be
noticeable

when

any
of
the

following
symptoms
is

encountered

during
operation

I
Car
will
not

respond
to

erigine
speed
during
acceleration

2
Insufficient

car

speed

3
Lack
of

power

during
uphill

driving

Some
of
the

above
conditions

may
also
be
attributable
to

engine
problem
First
determine

whether

engine
or
clutch
is

causing
the

problem

If

slipping
clutch
is

left
unheeded
wear

and
or

overheating
will
occur
on
clutch

facing
to
such

an
extent
that
it
is

no

longer
serviceable

TO

TEST
FOR
SLIPPING
CLurCH

proceed
as
follows

During
upgrade
havelling
run

engine
at

about
40
to
50

km
h
25
to
31
MPH

with

gear
shift

lever
in

3rd
speed
position
shift
into

highest

gear
and
t
the
same
time

rev

up
engine
If
clutch

is

slipping
car
willnot

readily
respond
to

depression
of
accelerator

pedal

Clutch

facing
warn

excessively

Oil
or

grease
on
clutch

facing

Warped
clutch

cover
or

pressure
plate
Replace

Replace

Repair
or

replace

Dragging
clu

tch
is

particularly
noticeable

when

shifting

gears
especially
into

low

gear

TO
TEST
FOR

DRAGGING
CLurCH

proceed
as
follows

I
Start

engine

Disengage
clutch
Shift
into

reverse

gear
and
then
into
Neutral

Gradually

increase

engine

speed
and

again
shift
into
reverse

gear
If
clutch
is

dragging
gear
grating

is
heard
when

shifting

gears
from
Neutral
into

Reverse

2

Stop
engine
and
shift

gears
Conduct
this
test
at
each

gear
position

3
In

step
2

gears
are
shifted

smoothly

except
1st

speed
position
at

idling

a
If

dragging
is

encountered

at
the
end
of

shifting
check
condition
of

synchro

mechanism
in

transmission

b
If

dragging
is
encountered
at
the

beginning
of

shifting
proceed
to

step
4

below

4

Push

change
lever
toward
Reverse
ide

depress
pedal
to
check
for
free

travel
of

pedal

a
If

pedal
can
be

depressed
further
check
clutch
for

condition

b
If

pedal
cannot
be

depressed
further

proceed
to

step
5

below

5
Check

clutch
control

pedal
height
pedal
free

play
free

travel
withdrawal
lever

play
etc

If

any
abnormal

condition
does
not
exist
and
if

pedal
cannot
be

depressed
further
check

clutch
for

condition

Clutch
disc

runout
or

warped

Wear
or
rust

on
hub

splines
in

clutch

disc

Diaphragm
spring
toe

height
out
of

adjustment
or
toe

tip
worn

Worn

or

improperly
installed

parts
Replace

Clean
and
lubricate

with

grease
or

replace

Adjust
or
replace

Repair
or

replace

CL12

COMPRESSOR

OIL
LEVEL
CHECK

The
oil
used
to
lubricate

compres

sor
circulates
into

system
from
the
oil

sump
while

compressor
is

operating

Therefore
to

correctly
measure
com

pressor
oil
the
amount
of
oil

flowing

to

system
must
be
considered
If
a

considerable
amount
of

leakage
of

refrigerant
gas
happens
the

leakage
of

compressor
oil
is
also

considered

There
will
be
no

compressor
oil
leak

age
from
a

completely
sealed

system

When

system
operates
under

satisfying

condition
the

compressor
oil
level

check
is

unnecessary

When

checking
the
level
of
com

pressor
oil

or
when

replacing
any

component
part
of
the

system
use
the

following
service

procedure
This

facio

litates
to

return
oil
to

compressor

1

Operate
compressor
at

engine

idling
speed
I
OOO

rpm
or
below

with

controls
set
for

maximum

cooling

and

high
blower

speed
for
10
to
15

minutes
in
order

to
return
com

pressor

oil
to

compressor

2

Stop
the

engine
and

discharge

refrigerant
of

system
and
then

remove

compressor
from
the

car

3

Remove

compressor
filler

plug

Drain

compressor
oil
from

compres

sor
oil

sump
and
measure
the
amount

AC742

Fig
AC
23
Filler
Plug

4

Compressor
oil
is

satisfactory
if

the

following
amount
of
oil
remains
in

the

compressor

Residual
oil

140
to
220
cc

4
7

to
7
4
US
fl
oz

4
9
to
7
7

Imp
fl
oz
Air

Conditioning

5
Check
the

cleanliness
of
the

oil
If

the
oil
contains

chips
or
other

foreign

material
clean

oil

sump
with
new
oil

6
Discard
the
used
oil
and
fill
with

the
same

amount
of

new
oil
Add

oil
if

found
less

than
above
amount

If

compressor
is

inoperative
due

to

faulty
compressor
or

heavy
loss
of

refrigerant
remove

compressor
and

repair
as

necessary
Then

pour
oil

up

to

correct
level
and
install
on

engine

After
above

steps
have
been

com

pleted
recheck

oil
level
drain
oil

to

correct
level

if
level
is

excessively
high

CAUTION

a
The
oil
should
not
be
transfused

from
a
container
into
another
as

the
failure
will

possibly
cause

moisture
to
mix
with
the
oil

b
The
used
oil
should
not
be
returned

into

a
container

c
The
oil
should
not
be
used
if
its

state
of

preservation
is
not
clear

enough

PERFORMANCE
TEST

The

cooling

per
ormance
of
the

air

conditioner

changes
considerably
with

changes
in

surrounding
conditions

Testing
must
be

performed
using
the

correct
method
This
test
is
used
to

judge
whether

system
is

operating
cor

rectly
and

can
also
be
used

as
a

guiqe

in

checking
for

problems

1
Park
the

car
indoors
or
in
the

shade

2

Open
all
the
windows

of
the
car

fully
However
close
the
doors

3

Open
the
hood

4
Connect

manifold

gauge
to

high

and
low

side
service
valves
of
the

system
Refer
to

Handling
Manifold

Gauge

5

Set
air
lever
to

AIC

position

6
Set

temperature
lever
to
maxi

mum
cold

position

7

Set
blower
to
its

highest

speed

8
Start
the

engine
and
hold

engine

speed
at
1
500

rpm

9
After
the
air
conditioner
has
been

operated
for
about
10
minutes
meas

ure

system
pressures
at

high
pressure

discharge
side
and
low

pressure
suc

tion

side

10
Measure
the

temperature
of
dis

AC
17
charge
air
at
the

center
outlet

grille

11
Measure

the

temperature
and

humidity
of
the

evaporator
in
take
air

at

the

recirculating
air
inlet

of
the

evaporator

12
Measure
the

temperature
and

humidity
of
the
ambient
air
at
a

point

I
m
3
3
ft

front
of

condenser

However
a

dry
bulb

and
wet
bulb

must
not
be

placed
in

direct
sunlight

13

Check
for

any
abnormalities
by

comparing
the
test
results

with
stand

ard

pressure
Refer
to

Performance

Chart

Note

a

The

pressure
will

change
in
the

following
manner
with

changes
in

conditions

When

blower
speed
is
low
dis

charge
pressure
will

drop

When
the
relative

humidity
of
in

take
air
is
low

discharge
pressure

will

drop

b

The

temperature
will

change
in
the

following
manner

with

changes
in

conditions

When
the
ambient
air

temperature

is
low
the
outlet
air

temperature

will
become
low

If
the
test
reveals
that

there
is

any

abnormality
in

system
pressure
isolate

the

cause
and

repair
Refer
to
Trouble

Diagnoses
and
Corrections

REFRIGERANT

LEAKS

If
leaks
are

noticeable
leaky
parts

should
be

repaired
Then
system

should

be
fIlled
with

refrigerant

CAUTION

00

not

operate
compressor
with

refrigerant
level

excessively
low

If
this
caution
is

neglected
a
burnt

compressor
will
result
since

heavy
loss

of

refrigerant
usually
indicates

heavy

loss
of

compressor
liil

I

f

system
has
been

exposed
to

atmosphere
for

an
extended

period
of

time

I
receiver

drier
must
be

replaced

If
leaks
are

slight
and

no
air
is

present

in

system
add

refrigerant
as

necessary

To
detect
leaks

refer
to

Checking