1979 DATSUN 210 diagram

5

Fit
insert

ensuring
that
it

seats
on

bottom
face
of
its

recess

6

Newly
fitted
valve
seat
should
be

cut
or

ground
with
suitable
seat
cutter

or

grinding
stone

7

Apply
smalliunount
of
fine

grind

ing
compound
to
valve

contacting
face

and

put
valve
into

guide
Lap
valve

against
its
seat
ntil

proper
valve
seat

ing
is

obtained

Remove
valve
and
clean
valve
and

valve
seat

VALVE
ROCKER
ARM

1

AND
SHAFT

I

Check
rocker

arm
bore
and
shaft

for
scores
or
scuffs

2
Check
clearance

between
each

rocker
arm
and
shaft

by
measuring

inner
diameter
of

rocker
arm
bore
and

outer
diameter
of
shaft

If
either
clearance
is
not
within

spec
ification

replace
rocker
arm

and
or
shaft

3
Check
valve
end
contact
surface

of
rocker
arm
for
abnormal
wear
or

scuffs

VALVE
LIFTER
AND

PUSH

ROD

I
Check
valve
lifter
for

wear
or

scuffs
Check
bottom
end
of
valve

lifter
to
make
sure
it
has
a

slight

convex

Replace
valve
lifters
that
are

scored
worn
or
have
unsmooth
bot

tom

2
Check
clearance
between
lifter

hole
on

cylinder
block
and
valve
lifter

Replace
valve
lifter
if
clearance

ex

ceeds
wear
limit

3

Check

push
rod
for

bending
and

damage

Check
end
of

push
rod
for

rough

ness
or
excessive
wear

CAMSHAFT
AND

CAMSHAFT
BEARING

CAMSHAFT

BEARING

CLEARANCE

Journal
diameters
should
be
check

ed
with
a
micrometer
and

bearings

with
an
inside
dial

gauge
Measure

ments
should
then
be

compared
to
Engine
Mechanical

determine
whether

bearings
are
worn

If
worn

beyond
0
15

mm
0
0059
in

replace
using
Camshaft

Bearing
Drift

STl6Il0000
In

press
fitting
a
new

bearing
make
certain
that

oil
holes
in

block
and

bearing
are

properly
aligned

EM474

Fig
EM
27

Measuring
Camshaft

Bearing
Inner

Diameter

CAUTION

a

After

replacing
all

bearings
finish

bearing
inner
diameters

by
line
bor

ing

b
I
nstall
welch

plug
into

cylinder

block

applying
sealant

EM475

Fig
EM
28

Replacing
Cam
haft

Bearings

CAMSHAFT
ALIGNMENT

I

Check
camshaft
camshaft

journal

and
earn
surface
for

bending
wear
or

damage
If
fault
is

beyond
limits

replace
affected

parts

2
A

bend
value
is
one

half
of
the

reading
obtained
when
camshaft
is

turned

one
full
revolution
with
a
dial

gauge
applied
to
the
cen
ter

journal

Camshaft
bend

Total
indicator

reading

Less
than

0
10

mm
0

0039
in

EM
7
s

EM476

Fig
EM
29

Checking
Cam

haft
Bend

3

Camshaft
end

play
can
be
check

ed

by
installing
camshaft
camshaft

locating
plate
and
camshaft

sprocket

in

thier

respective
p
sitions

End

play

can
then
be

checked
with
a

dial

guage

or

feeler

gauge
If
end

play
exceeds
the

specified
limit

replace
locating
plate

Max

tolerance
of
camshaft

end

pley

0
10
mm
0

0039
in

EM477

Fig
EM
3D

Checking
Cam

haft
End

Play

VALVE
TIMING

This

diagram
applies
to
all

cyl

inders

If

any
valve
is
found

beyond

specifications
one

possibility
is

that

earn
lobe
is

worJ
1
or

damaged
exces

sively
calling
for

replacement
of
cam

shaft

CYLINDER
BLOCK

I

Visually
check

cylinder
block

for

cracks
or

flaws

2

Measure

top
of

cylinder
block

cylinder
head

mating
face
for

warp

age
If

warpage
exceeds
limits
correct

it

Warpage
of
cylinder
block

surface

Less
than

0
10
mm
0

0039
in

1

Ignition
switch

2

Amplifier

3

Speed
switch
Note

a

Tightening
torque
is
1
8

to
2
2

kg
m
13
to
16
ft
Ib

b
After

replacement
start

engine
and

check
to
be
sure
that
fuel
is
not

leaking
and
that
anti
dieseling
sole

noid
i

in

good
condition

EFOSOA

Fig
EF47
Checking
Anti
dieaeling

Solenoid

l
SJ
Engine
Fuel

THROTTLE
OPENER

CONTROL
SYSTEM

When

idling
speed
is
too

high
and

does
not

drop
to

idling
speed
the

throttle

opener
control

system
should

be

checked

Manual
transmission
models

I

Check
for

continuity
between
A

and
8
terminals

specified
in
function

check

connector
with

ignition
switch

OFF

If

continuity
does
not
exist

sole

noid

may
be

faulty
Replace
throttle

opener
control
valve

assembly

e

1J
3

o
0

5

4

Solenoid

5
F
nction

check

connector

EF434A

Fig
EF
48
Circuit

Diagram
for
Throttle

Opener
Control
System
MIT

2

Turn
on

ignition
switch
and

check

voltage
across
terminals
A
and

8
l2V

battery
voltage
should

appear

in

this

step

If
not

check
fuse
or

amplifier

3

Keep
ignition
switch
ON

remove

speedometer
cable
from
combination

meter
Then

spin
speedometer
in

com

bination
meter
with

fingers
and
con

firm
that
the

speedometer
pointer

indicates
more
than
16
km

h

10

MPH

temporarily
Voltage
between

A

and
8
terminals
should
be

chang

ed

as
follows
More
than
10

miles
OV

Less
than
10
miles
12V

If

not

amplifier
or

speed
detecting

switch

may
be

faulty
replace
parts

with

new
ones

Automatic
transmission
models

I
Check
for

continuity
between
A

and
8

terminals

specified
in
function

check

connector
with

ignition
switch

OFF

EF
19
If

continuity
does

not
exist
sole

noid

may
be

faulty
Replace
throttle

opener
control
valve

assembly

If
t

r

If

I

Inhibitor
switch

N
p

ON

2
Solenoid

3
Function
check

connector
EF43SA

Fig
EF

49
Circuit

Diagram
for

Throttle

Opener
Control

System
AfT

2
Turn

ignition
switch
ON
check

voltage
across
A

and
8
terminals

Voltage
between
two
terminals

should
be

changed
as
follows

If
not

replace
inhibitor
switch

N
or
p

position
OV

Other
than

N

and
p

position
l2V

THROTTLE
OPENER

OPERATING
PRESSURE

I
Remove
harness
of
solenoid
valve

DESCRIPTION

The

ignition
circuit
consists

of

igni

tion

switch
Ie

ignition
unit
dis

tributor

winng

ipark
plugs
and

battery

The

distributor
is

of
the

contactless

type
and
is

equipped
with
a

pick
up

coil
which

electrically
detects
the

igni

tion

timing
signal
in

place
of
the

ircuit

I
rea
r

of
the
conventional

distributor
The
IC

ignition
unit
is

a

new
addition

which

generates
the

signal
required
for
the

make
and
break

of
the

primary
current
for
the

ignition

coil

The

primary
current
is

supplied

by
the

battery
or
alternator
and

flows

through
the

primary
circuit

It
consists

of
the

ignition
switch

primary

winding
of
the

ignition
coil

IC

ignition
unit

and
all

connecting
low

tension

wiring

The

secondary
current
is

produced

by
the

ignition
coil
and
flows

through

the

secondary
circuit

resulting
in

high

voltage
spark
between

the
electrodes

of

the

spark

plugs
in

engine
cylinders

This
circuit

contains
the

secondary

winding
of
the

ignition
coil
distribu

tor

high
tension

cables
to

coil
and

spark

plugs
distributor

rotor
and

cap

When
the

ignition
switch
is

turned

on
and
the

distributor

reluctor
rotates

the

primary
current
flows

through
the

primary

winding
of
the

coil
and

through
IC

ignitionu
nit

to

ground

When
the

primary
circuit
is

opened

by
circuit

of
IC

ignition
unit

the

magnetic
field
built

up
in

the

primary

winding
of
the
coil

moves

through

the

secondary
winding
of
the

coil
in

ducing
high

voltage
This

high

voltage

is

produced

every
time

the

primary

circuit

opens
EngineElect
ical

System

IGNITfON

CIRCUIT

The

secondary
current

flows

through
the

high
tension

cable
to
the

distributor

cap
then

the
rotor

distributes
the
current
to

one
of
the

spark
plug
terminals
in
the

distrubutor

cap

Then
the

spark
occurs

while
the

secondary
current

jumps
the

gap
be

tween
the
insulated
electrode
and
the

ground
side
electrode
of
the

spark

plug
This

process
is

repeated
for
each

power
stroke

of
t

e

engine

The

spark
plug
should
be

inspected

cleaned
and

regapped
at

tune

up

Spark

plugs
should
also
be

replaced

periodically
as

specified
in

the

Maintenance
Schedule

The
remainder

of
the

ignition

component
parti
should
be

inspected

Battery

letink

Primary

winding

1

Ignition
coil

Secondary
winding
J
for

only
their

operation
air

gap
of

distributor

tightness
of

electrical

terminals
and

wiring
condition

Apply
grease
NLGI

consistency

No
I

containing
MaS
or

equivalent

to
distributor
rotor

shaft
as

required

WARNING

When
current
is

flowing
never

touch
with
bare

hand

high
tension

cables
or

any
other

parts
with

high

vollage
If

parts
are
moist

touching

them
could
cause
an
electric
shock

even
if

they
are
insulated

Always

wear

dry
well
insulated

gloves
or

wrap
affected

parts
with

dry
cloth

before

handling

To
starter

EE
20
Ro

or
head

Ul

J

r

Spark
plugs

EE743

Fig
EE
56

Ignition
System
Circuit

Diagram

Engine
Electrical

System

Battery
Ignition
switch

CG

1

e
@

P
L
JO

L
J

Ignition
coil

r

Spark
timing

signal

I

oni
1oring

Clfcwt

0
R

Lock

Pi
k
il
preventing

c

up
co

circuit

Ln
n

Distributor
2P

fJ
1I
connector

8C

H
uty
control

ClICUlt
Power

switching

circuit

Current

limiting

circuit

Ie

ignition
unit

EE749

Fig
EE
66
Ie

Ignition
Unit
Circuit

Diagram

REMOVAL
AND

INSTALLATION
5
Disconnect

pick
up
coil
wire
from

IC

ignition
unit

Note
Holding
connector
with
needle

nose

pliers
as
shown
in

Fig
EE
68

disconnect

pick
up
coil
terminal
Be

careful
not
to

pull
lead
wire
I
Disconnect

battery
ground
cable

2

Take
off
distributor

cap
and
re

move
rotor
head

3

Disconnect
harness
connector

4

Remove
Ie

ignition
unit

securing

screws

rf

I
I

EE751

Fig
EE
68
Di
Connecting
Pick

up
Coil

Term
inal

eE750

Fig
EE
67

Removing
Ie

Ignition

Unit
6

InstaU
IC

ignition
unit
in

the

reverse
order

of
removal

EE
25
CAUTION

Before

instelling
IC

ignition
unit
mike

sure

mlting
surfaces
of

IC

ignition
unit

end
distributor
Ire
cleen
and
free
from

dust

sand
and
moisture

Note

a
When

connecting
lead
wires

to
unit

insert
lead
wire
terminal
with
fin

ger
as
shown
in

Fig
EE
69

b

Connect
lead
wires

according
to

color
marked
on

upper
face
of

grommet

EE752

Fig
EE
69

Connecting
Pick

up
Coil

Terminal

CHECKING
IC

IGNITION
SYSTEM

DESCRIPTION

To
check
the
IC

ignition

system

use
a
circuit

tester
The

ignition
per

fannance
of
the

ignition
system
at
a

high
speed
cannot
be
measured

direct

ly
However

it
can
be

checked

by

operating
a
vehicle

actually
at
a

high

speed
The
IC

ignition
system
can
be

checked

easily
by
referring
to
the

Inspection
Table
For
the

method
of

inspection
refer
to

respective
items

P
r
n
P

rk

Torqu
con
r1lr

011
cool

Drain

volv

r
Front

lubricatic

Ora

1

x

j

L

u
2

6

CD
pr
u

II
ator
Automatic
Transmission

Lawand

b
r
kr

Brah

bond

f

12@

J
f
di
X

Ivacuum
r

11
throttl
Throttl

lenOI

I
I
yo
lv

e
f
k

UP

j
o
n

1
I

s
I

j

I
c
u
u

00
0

I
1
2
@

r

13

@2nd
3rdShlft

10
lv

In
Jl

Si
R

or

clutch

x

Otific

chick

volv

Throttl

drain

01

x

II
5

I

J

1
11

II
2

@l
2

dl
r
Shift

u
I

I

j2

II

Xu
J

I

f1
11
U

2
n

Ol
l

I

I

X
X

Secondary
Primary

90
rn01

101
90
nor

01
Not
Mark

d
X
ore

drain

lint
pru
r

Go
nor

f
d
p
u
ur

Govtrnor

prusu

r
r

cl

Torqu
convert

p
ur

TI
I
ratt

prUlur
AT455

Fig
A
T
B
Oil

Pre
re

Circuit

Diagram
P

rang
Par

AT7

Automatic

Transmission

R

ren
e

Rever

Torque
con
r1

ril
j

j

I

f
I

12
C
I

J
111
x
J

0

8

Q

I

II

lr

Vacuum
Throttl

I
old

I
10
J

f
k

JP

L
u
I

lJ

El
J
U

I
II
O
co
l

chell

01

TO

I
drain

fol

il

Xl

tJj

1
J

l
2nd

3rd
Ii

minQ

x

U1
1

21
1

1C
ll

IIF

li@S
OC

II
to
0

r

6

9r3

Q

rm
g

L
1

u
iii

uLrt
23

r

t

@

PRND2
I

I
x
moo

la
OlenOid

Oil
cooler

1Rear
lubr
c

otion

f

L
ohl

r
Front

u

J

I
@2nd
3

Shift

vol

a
IS

I

12

u

l
r

I
3

w

q

r
4

I
l

Secondory

Qo
rnar

01
Primarf

Qo
i1lr
lol

Note
Mork

d
X
Qr

droin

j

Lin

prUltfrt
Go
nor

tced

r
rr
uur

J

G
0
1
1
101

pr
L
J

3
J

Torqu
can
tar

P
Urt

Tn
rotU

pr
ur

AT456

Fig
AT
10
Oil
Pr

lSure
Circuit

Diagram
R

range
Reverse

AT
9

N

ran
e
Neutral

Torqu
conv

rt
r

011
cool
r
TIC
Oil
pillut

i

RlOr
lubricofion

j

l
oin

vo

Drain
volv
Fron

lub
icati

lJ

x

I

U
2

CD
pr
utl

II

o
or
Automatic
Transmission

e
m

eoo

h
m

Band

ii

@
rvo

Vacuum

Thronl

0
throttl

boclt

up

I
I
olu

Yolv

I

r

Throttl

drain

volv

16

IO

S

X

tJ1
1

g
2nd
3rd

timing

oh

8

r

t

@

I

Not
hlorll
td
X
or

drain

Lin
pru
lr

lGo
rnor

d
pr
ur

60
rnol

pr

m

Torqu
convert
r

Plu
ur

W

TI
I

rottl
p
nur
f

r

1

1

18
I

L
O
lie

chick

volv

3lIf
IDpre
l
h

J
24
m
iM

llv

16
3

X

1X

0

jr

i

II
I

II

I
I

I

X

U4lJ
I

3

J

a
i

I

U1J

S

condory

governor
lal
Primor

gov
rnor
tO

AT457

Fig
AT
II
Oil
Pr
u
Circuit

Diagram
N

rang
Neutral

ATll

D3
ran

3rd
g
ar

Oi
I

pump

1

t

Torque
J

C
onYlrt
r

I
i

t
t

Pressure

reQula
or

Ya
lye

L
i
ns

pressure

Goyernor

pressure
Automatic
Transmission

Front

clurch
Rlar

clutch
Brake

bond
Low

and

rever
brake

0

thBond
L
B
so

J
1

1

1

lt

r
T

tr
Throttle

pressure

t

t

I

@

t

Governor

pr
au
r

Torque
canYlr
er

pr
ssure

rIA
Throttle

pressure

AT449

Fill
AT
17
Oil

Pro
ure
Circuit

Diagram

D3
range
3rd

gear

AT
17