ignition DATSUN B110 1973 Service Workshop Manual

ENGINE

Weight

pivot
diameter

mm
in

Weight
hole
diameter

mm
in

Clearance
between

pivot
and
hole

mmOn
5
0

028

0
9
9
1

0011

1
005
1

6

1
0002

5
1
018

0

1969
0

0007

o
0

0
005
to

0
046
0
0002

to
0

0018

IGNITION
COIL

CONTENTS

DESCRIPTION
EE
36

DESCRIPTION

The

Ignition
coil
is

of
an
oil

filled

type
The

ignition

coil
case
is
mted

with
oil
which
has

good
insulating
and

heat

radiating
characteristics

The

ignition
coil
has
a

greater
ratio
between
the

primary
and

secondary
windings
to

step
up
the

battery

voltage
to
the

high
voltage
to
cause

stronger
sparks
to

jump
the

spark

plug
gap

The

cap
is

made
of

alkyd
resin

which
offers

high

resistance

to
electric

arc
and
increased
insulation

The
resistor
in

the

ignition
coil
circuit

helps
produce

strong
sparks
from

starting
to

high
speed
full

power

operation

The
internal
resistor
limits

to
a
maximum
safe
flow
of

the

primary
current

through
the
coil
and
distributor

contact

points
Thus

it

protects
the
contact

points

during

slow

speed
operation
when

they
are

closed
for

long

intervals

The

ignition
coil
and
resistor

should
be
handled
as
a

matched
set

EE

36
SPECIFICATIONS
EE

37

@

@

@l

@

EE143

I

Primary
terminal

2

Secondary
terminal

3

Cap

4

Spring

5

Side
core

6

Primary
coil
7

Secondary
coil

8
insulator
oil

9
Center
core

10

Segment

tt

Case

Fig
EE
73
Construction

ENGINE
ElECTRICAL
SYSTEM

SPECIFICATIONS

Make
and

type

Primary
voltage
v

Spark

gap
mm
in

Primary
resistance

at
200C
680

F
n

Secondary
resistance

at
200C
680F
Kn

External
resistor

at
200C
680
F
n

Applied
resistor
HANSHIN
HITACHI

H5
15
2
C6R
601

12
12

more
than
7

more
than
7

0
28
0
28

1
17
to
I
43
l
l
7

to
I
43

11
2
to
16
8
11
2

to
16
8

l
3tol7
l
3tol7

RC
15
5560R
151O

SPARK
PLUG

CONTENTS

DESCRIPTION

INSPECTION

CLEANING
AND

REGAP
EE
37

EE
37

EE
38

DESCRIPTION

The

spark
plugs
are
of
the
resister

type
having
14
mm

0
551
in
threads
and
0
8
to
0
9
mm
0
031
to
0
Q35
in

gap

Note
All

spark
plugs
installed
on
an

engine
must

be
of

the

same
brand
and
number
of
heat

range

INSPECTION

1
Remove

spark
plug
wire

by
pulling
on
boot
not
on

wire
itself

2
Remove

spark
plugs

3

Check
electrodes
and
inner
and
outer

porcelains
of

plugs
noting
the

type
of

deposits
and
the

degree
of

electrode
erosion

Refer
to

Figure
EE
74

Normal
Brown

to

grayish
tan

deposits
and

slight
elec

trode
wear
indicate
correct

spark

plug
heat

range
SPECIFICATIONS
AND

SERVICE
DATA

TROUBLE

DIAGNOSES
AND

CORRECTIONS
EE
38

EE
39

Carbon
fouled

Dry
fluffy
carbon

deposits
on
the

insula

tor
and

electrode
were

mostly
caused

by
slow

speed

driving
in

city
weak

ignition
too
rich
fuel
mixture

dirty
air

cleaner
etc

H
is

advisable
to

replace
with

plugs
having
hotter
heat

range

Oil
fouled
Wet

black

deposits
show

excessive
oil

en

trance
into
combustion

chamber

through
worn

rings

and

pistons
or
excessive

clearance
between

valve

guides

and

stems
If
the
same

condition
remains

after

repair

use
a

hotter

plug

Overheating
White
or

light
gray
insulator
with
black

or

gray
brown

spots
and

bluish
burnt
electrodes
indicate

engine

overheating
Moreover
the

appearance
results

from
incorrect

ignition
timing
loose

spark
plugs
low

fuel

pump
pressure
wrong
selection

of
fuel
a

hotter

plug
etc

H
is
advisable
to

replace
with

plugs
having
colder

heat

range

EE
37

ENGINE
ELECTRICAL
SYSTEM

TROUBLE
DIAGNOSES

AND

CORRECTIONS

When

engine
does
not

start

If
there
is
no
trouble
in
fuel

system

ignition
system

should
be
checked
This
can
be

easily
done

by
detaching
a

high
tension
cable
from

spark
plug
starting
engine
and
observing
condition
of

spark
that
occurs
between

high

tension

cable
and

spark
plug
terminal
After

checking
this

repair
as

necessary

Length
of

Trouble
location
Cause
Remedies

spark
gap

No

sparks
at
all
Distributor

Defective
insulation
of
condenser

Replace

Breakage
of
lead
wire
on
low
tension
side

Repair

Defective
insulation
of

cap
and

rotor
head

Replace

Point
does

not

open
or
close

Repair

Ignition
coil
Wire

breakage
or
short
circuit

of
coil

Replace
with
new

one

High
tension
cable
Wire

coming
off

Repair

Defective
insulation

Replace

I

to
2
mm

0
0394
Distributor
Point

gap
too
wide

Correct

to
0
0787
in

or

Oil

sticking
on

point
Clean

irregular

Point
burnt

too
much

Replace

Less
than
6

mm
Spark
plugs
Electrode

gap
too
wide
Correct
or

replace

0
2362
in

Too

much
carbon
Clean
or

replace

Broken
neck
of
insulator

Replace

Expiry
of

plug
life

Replace

2

When

engine
rotates
but
does

not
run

smoothly

In

this
case
there

are

many
causes
resulting
from
the

ignition
system
and

other

engine
conditions

not
related
to
ignition
Therefore
first

complete

inspection
of

ignition

system
should
be
carried
out

EE
39

Troubles

Engine
misses

Engine
causes

knocking
very

often

Engine
does

not

give
enough

power
Trouble
location

Distributor

Ignition
coil

High
tension
code

Spark
plugs

Distributor

Spark
plugs

Distributor

Spark
plugs
ENGINE

Causes

Dirty
point

Improper
point
gap

Leak

of

electricity
of

cap
and
rotor
head

Defective
insulation
of
condenser

Defective
arm

Defective

spring
of
arm

Breakage
oflead
wire

Worn

out
or

shaky
breaker

plate

Worn
out
or

shaky
distributor
shaft

Layer
short

circuit
or
use
of

inferior

quality

Deterioration
of

insulation
and
leak

of

electricity

Dirty

Leak
of

electricity
at

upper
porcelain
insu

lator

Improper
and
advance

timing

Coming
off
or

breakage
of

governor
spring

A

pin
or
a

hole
of

governor
portion
worn

out

Burnt
too
much

Improper
and
retarded

timing

Defedive
function
of

governor

Dirty
point

Point

gap
too
narrow

Dirty

EE
40
Remedies

Clean

Correct

Repair
or

replace

Replace

Oil
shaft

Replace
assembly

Replace

Replace
assembly

Replace
assembly

Replace
with

good

one

Replace

Clean

Repair
or

replace

Correct
the

fitting

Correct
or

replace

Replace

Replace

Correct
the

fitting

Replace
assembly

Clean

Correct

Clean

CHASSIS

ENGINE
REMOVAL
AND
INSTALLATION

CONTENTS

PR
ECAUTIONS

REMOVAL
ERA

ERA

PRECAUTIONS

Be
sure
to
use
fender
cover

so
that
the

body
is

not

damaged

2
When

lifting
the

engine
or
when

jacking
up
the

engine
pay
attention
for

safety
and

carry
out

operation

correctly
so
that
the

parts
are
not

damaged

REMOVAL

I

Removing
hood

Open
the
hood

remove
four
installation
bolts
and

remove
the
hood

2
Disconnect

the

battery
cable
from
the
terminal

3

Removing
radiator

Drain
water

from
the

radiator
disconnect
two
radiator

hoses
remove

four
radiator
installation
bolts
and
remove

the
radiator

Fig
ER
8
Removin
radiator

4

Removing
cables
and
hoses

Disconnect
the

following
cables
hoses
and
wires

High
voltage
cable
between

ignition
coil
and

distribu
INSTAllATION
ER
6

tor

Cable
to
the
thermal
transmitter

Cable
to
the
oil

pressure
switch

Cable
to
the

primary
side

of
the
distributor

Cable
to
the

starting
motor

Fuel
hose

Cable
to
the
alternator

Heater
hose
for
model
with
heater

only

Wires

for
accelerator
and
choke
The

operation
will
be

carried
out

more

easily
by
removing
the
air
cleaner

Fig
ER
9

Right
side

of
engine
compartment

Fig
ER
10

Left
side

of
engine
compartment

ERA