1973 DATSUN B110 service

ENGINE

ElECTRICAL
SYSTEM

IGNITION
CIRCUIT

The

ignition
circuit
consists
of

the

distributor

ignition
coil

ignition
switch

spark
plugs
high
tension
cable
and
the

battery
Figure
EE
57

shows

ignition
circuit

8
I

CC

BATTERY

PRIMARY

COIL

SlO

Lf

IGNITION

SECONDARY

COIL

COIL

BREAKER
POINT

jJ
a

w

CI

Z

w

19

DISTRIBUTORI
U
1Fl
r

lB

S

J1G

TO

STARTER

CAP

ROTOR

HEAD

SPARK
PLUG

7

Fig
EE

57

Ignition
system
circuit

diagram

DISTRIBUTOR

CONSTRUCTION

CHECKING

AND
ADJUSTMENT

Cap
and
rotor
head

Point

Condenser

Centrifugal
advance
mechanical

part

Vacuum
advance

mechanical

part
EE
29

EE
31

EE
31

EE
31

EE
31

EE
31

EE

32

CONSTRUCTION

The
distributor
consists
of

high
tension

voltage
part

switch
off

part

centrifugal
advancing
angle
part
vacuum

advance
mechanical

part
and

driving
part
CONTENTS

DISASSEMBLY
AND
REASSEMBLY

Disassembly

Reassembly

SPEC

IFICATIONS
AND
SERVICE
DATA

Specifications

Service
data
EE

33

EE
33

EE
34

EE
35

EE
35

EE

35

Figures
EE

58
and
S9

show
the

construction
and

exploded
view

EE
29

ENGINE
ElECTRICAL
SYSTEM

SPECIFICATIONS
AND

SERVICE
DATA

Specifications

Make
and

type
0412
80
0412

89

for
Manual
for
Automatic

Transmission
Transmission

Firing
order
1
3
4
2
I
3
4
2

Rotating
direction
Counterclockwise

Counterclockwise

Dwell

angle
49
550
49
550

Condenser

capacity
J
lF
0
20
to

0
24
0

20
to
0
24

Service
data

Point

gap
mm
in
0
45
to
0
55

0
0177
to
0

0217

0

50
to
0
65
1
1
to
1
4
Point

pressure
kg
lb

Condenser

capacity
p
F

Micro
Farad
0

20
to
0
24

Condenser
isolate
resistance

M
1

Mega
Ohms
5

Cap
carbon

point
mm
in

rom
in

Housing
inner

diameter
mm
in
12
0
472

0
010

D
0004

12
45

0
020
0
4902

D
0008

12
45
018

0
4902
0007
Shaft
diameter

lower

part

Clearance
between
shaft
and

housing
mm
in

Amendment
limit
of
clearance
mm
in
0
010
to

0
Q38
0

0004
to
0

0015

0
08
0
0031

8
0
005

0
3150
0
0002

D

O
14

D
0006

8
O
15

0
3150
0006

0
005
to
0
029

0
0002
to
0
00
II
Shaft
diameter

upper
part
mm
in

earn
inner

diameter
rom
in

Clearance
between
shaft
and
cam

mm
in

EE
35

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

Overheating

Normal
Carbon
fould

Fig
EE
74

SpaTk
plug
Life

4

After

cleaning
dress
electrodes
with
a

small
fine
fIle

to
flatten
the
surfaces
of
both

center
and
side
electrodes

in

parallel
Set

spark

plug
gap
to

specification

5

Install

spark
plugs
and

torque
each

plug
to
1
5

to
2

0

kg

m
ll
to
15
ft
lb

6
Connect

spark
plug
wires

CLEANING
AND
REGAP

Clean

spark
plugs
in
a

sand
blast

type
cleaner
Avoid

excessive

blasting
Clean
and
remove
carbon

or
oxide

deposits
but
do
not
wear

away

porcelain
If

deposits
are

too
stubborn
discard

plugs

Mter

cleaning
spark

plugs
renew

firing
surface

of

electrodes
with
me
mentioned
above
Then

gap
spark

plugs
to
0
8
to

0
9
mm
0

030
to
0
035

in

using
a
round

SPECIFICATIONS
AND
SERVICE
DATA

Make

Model

Size
Screw
dia

x
Reach

mm
in

Plug
gap
mm
in

Tightening

torque
kg
m
ft
b

EE
38
wire

feeler

gauge
All

spark

plugs
new
or
used
should
have

the

gap
checked
and
reset

by
bending
ground
electrode

Fig
EE
75

Setting
spaTk
plug
gap

NGK

HITACHI

BP5ES
1A6PW

14
x

19
0
55
x
0

75

0

8
to
0

9
0
031
to
0
035

1
5
to

2
5
11
0
to
15
0

DATE
ENGINE
ElECTRICAL
SYSTEM

SERVICE
JOURNAL
OR
BUl
LETIN
REFE
RENCE

JOURNAL
or

BULLETIN
No
PAGE
No
SUBJECT

EE
41

15
Lift

up
the

engine
toward
the
front

INSTALLATION

Install
the

engine
in

reverse

sequence
of
removal
CHASSIS

Fig
ER
14

Lifting
up
engine

SERVICE
JOURNAL
OR
BULLETIN

REFERENCE

DATE
JOURNAL
or

BULLETIN
No
PAGE
No

ER

6
SUBJECT

CHASSIS

SERVICE

DATA
AND

SPECIFICATIONS

Clutch
release

lever

Release

bearing
ta

diaphragm
spring

withdrawal
lever
clearance

Diaphragm

spring
to

flywheel
height

Gutch
disc

Facing
size

Outer

dia
x
inside
dia

x
thickness

Total

friction
area

Thickness

of
disc

assembly

Free

Compressed

Number
of
torsion

spring

Allowable
minimum

depth
of
rivet

head

from

facing
surface

Allowable

facing
run

out

Allowable

free

play
of

spline

Clutch

pedal

Pedal

height
when
not

depressed

Free

travel
of

pedal
head

Pressing

strength
at
full
stroke

Master

cylinder
clutch

Master

cylinder
diameter

Allowable
maximum
clearance

between

cylinder
and

piston
Hydraulic
clutch

0
7

to
I
4
mm

0
0276
to

0
055
in

29

to
31

mm

I
142
to
1
220
in

180
x
125
x
3
5
mm

7
09
x
4
92

x
0
140
in

264
cm2
40
92

sq
in

7
6
to
8

0
mm

0
2992

to
0
3150

in

6
7
to
7

0
mm

0

2638
to
0
2756
in

6

0
3

mm
0
0118
in

0
5

mm
0
0197
in
at

radius
85
mm
3
346

in

0
4

mm
0
0157
in

141
5
mm
5
57
in

30

mm

J
181
in

10
8

kg
23
8
Ib

15

87
mm
5
8
in

0
15

mm
0
0059

in

CL12
Mechanical
clutch

0

9
to
I
2
mm

0
0354
to
0
0472
in

136
5
to
146
5
mm

5

4
to
5
8
in

II
to

15mm

0
433
to
0
591
in

8
3

kg
18
31b

CLUTCH

Clogged
vent
hole
in
reservoir

cap
promotes

vacuum

in
master

cylinder

allowing
air

to

inf1ltrate

past
the
seal

Abnormal

lining
wear

Insufficient

pedal
free
travel

The
clutch

grabs

The
clutch

slips
Driver

steps
unnecessarily
on

pedal
this

causes
lin

jog
wear

and

damage
to
release

bearing

Weakened

or

snapped
pressure
springs

Incorrectly
installed

linings

Oil
or

grease
on

flywheel
pressure
plate
and

linings

Loose

disc

linings
due

to

poor
rivet

tightness

Clutch
disc

hub
does
not

slide

freely
on

drive
shaft

spline

Warped
or
cracked

pressure
plate

Misalignment

Stiffened

hydraulic
control
mechanism

Wom
out

lining

Insufficient
clutch

pedal
return

travel
due

to
the
control
and

pedal
return

springs
being

weak
or

misadjusted

Weakened
or
broken

diaphragm
spring

Oil
or

grease
on

linings

eLl5
Clean
reservoir

cap
unclog
the
vent

hole
and

bleed

the

system

Adjust
clutch

pedal
free
travel

correctly

Advise
driver

to
discontinue

wrong

practice

and

step
on

clutch

pedal
only
when
ne

cessary

Check

pressure
springs
for
tension
as

speci

fied
and

replace
springs
if

they
are

unserviceable

Replace

linings
with
new
ones

and
install

them

correctly
Check
clutch
disc
for
center

alignment

Remove
cause

of

leakage
clean

flywheel
and

pressure

plate
thoroughly
replace
linings

If

linings
are
not
worn

replace
defective

rivets

Otherwise

replace
linings
and
clench

rivets

securely

Remove

any

foreign
matter
or

dirt

deposits

from
shaft

splines
When
trouble
is

still

present
replace
damaged
parts

Replace
pressure

plate

Locate
the
defective

point
and
if

possible

adjust
alignment
or

replace
distorted

parts

Check

spring
tension

If

necessary
take

down

pedal
and

lubricate

components

Install
new

linings
and

make
sure
tha

t
the

clutch

disc

pressure
plate
and

flywheel
are

not

damaged

Locate

cause
of
failure
and

replace
defective

springs

Overhaul
clutch
and

replace
springs

Remove
cause
of

leakage
and

replace
linings

if

cleaning
is

ineffective