service DATSUN B110 1973 Service Repair Manual

ENGINE

Stator

core

EE044

Fig
EE
41

Testing
stator

for
ground

Inspection
of
diode

Perform
a
conduction
test
on
diodes
in

both
directions

using
an

ohmmeter
A

total
of
six
diodes
are

used
three

are
mounted
on
the

positive
EB

plate
and
other
three
are

on
the

negative
3
plate
The
conduction

test
should
be

performed
on
each

diode
between

the
terminal
and

plate

The
diode
installed
on
the

G
l
plate
is
a

positive
diode

which
allows
current

flowing
from
the
terminal
to

G
l

plate
only
In
other
words
current
does

not
flow
from
the

G
l
plate
to
the
terminal

EE046

Fig
EE
42

Inspecting
positive
diode

The

diode
installed
on
the

8
plate
is
a

negative
diode

which
allows
current

flowing
from
the

8
plate
to
the

terminal

only
In

other
words
current
does
not
flow
from

the

terminal

t08
plate

EE
20
8
Plate

EE047

Fig
EE
43

Inspecting
negative
diode

If
current

flows
in
both

positive
and

negative
diree

tions
the

diode
is
short
circuited
If

current
does

not
flow

in

any
direction
the
diode
is

open
These
diodes
are

unserviceable
If
there
is
a

defective
diode

replace
all

diodes
six

diodes
as
an

assembly
See
the

Figure
EE44

I
Test

probe
of
a
circuit
tester

I
8
E8

I
terminal

E8
plate

I
@
plate
terminal

I
terminal

8
plate

18
plate
te
rminal

18
plate
@

plate

18
plate

8
plate
Conduction

x

x

x

Fig
EE
44

lnspection
of
diodes

Inspection
of
brush

Check
the
movement

of
brush
and
if
the
movement
is

unsmooth
check
brush

holder
and
deJn
it
If
th
bmsh
is

worn
and
the

length
is

7
mm
0

2756
in
or
less

replace

the
brush
with
a
new

one
Check
the

brush

pig
tail
and
if

it
is
about
to
break

replace

ENGINE

terminal
to
IN
terminal
or
BAT
terminal
Connect
the

other
test

probe
to

ground
Make
sure
that
voltmeter

registers
battery
voltage

4
Start
the

engine
3
Turn
on

the
headlights
and
switch
to
main
beam

I

o

B

ttefY
E

A

J
0

il

I
5
Increase

engine
speed
gradually
until
it
is

approxi

mately
1

100
rpm
and
take
the
voltmeter

reading

6
If
the
measured
value
is
over
12
5

volts
the

alternator
is
in

good
condition
o

I

eE052
Voltmeter

Fig
EE
49

Testing
altematoT

Notes
8
Do
not
run

engine
at
the

speed
of

more
than

1
100

rpm
while
test
is

being
conducted
on

alternator

b
Do
not

race

engine
7
If
the

measured
value
is
below
12

5
volts
the

alternator
is
in

trouble
Remove
and
check
it

for

condition

SPECIFICATIONS
AND
SERVICE
DATA

Specifications

Make
and

type

Nominal

output

Pole

Revolution

No

load
minimum

revolution

Output
current

Wei
t

Applied
regulator

Service
data

Stator
coil

Resistance

per
phase

Rotor
coil

Resistance

Brush

Brush

length

Wear
limit

Spring
pressure

Slip
ring

Outer
diameter
V
A
HITACHI
LTl35
13B

12
35

rpm
Negative
ground

1
000
to
13

500

rpm

A
V

rpm

kg
1b
less
than
1

000

more
than
28

14
2

500

3
4
7
5

TLl
Z
57

n
0
17

at
200C
680F

n
4
4
at
200e
680
F

mm

in

mm
in

kg
lb
14
5
0

571

7
0
2756

0
25
to
0
35
0

55
to
0
77

mm
in
31
1
220

EE
22

Charge
relay

SPECIFICATIONS
AND
SERVICE

DATA

TROUBLE
DIAGNOSES

AND

CORRECTIONS
ENGINE
ElECTRICAL
SYSTEM

Reduction

limit

Repair
limit

Repair
accuracy
mm

in

mm
in

mm
in

REGULATOR

CONTENTS

DESCRIPTiON

MEASUREMENT
OF
REGULATING

VOLTAGE

ADJUSTMENT

Voltage

regu
lator
EE
23

EE
24

EE
25

EE
25

DESCRIPTION
I
0

0394

0
3
0
0118

0
05
0
0197

EE
26

EE
26

EE
27

1

I
T
r

@
V
The

regulator
basically
consists

of
a

voltage
regulator

and
a

charge
relay
The

voltage
regulator
has
two
sets
of

contact

points
a

lower
set
and

upper
set
to

control

altemator

voltage
An

armature

plate
placed
between
the

two
sets
of
contacts

moves

upward
or

downward
or

vibrates

The
lower
contacts
when

closed

complete
the

field
circuit
direct

to

ground
and
the

upper
contacts

when
closed

complete
the
field
circuit

to

ground
through

a
resistance

field
coil
and

produces
alternator

output

The

charge
relay
is

similar
in
construction

to
the

voltage

regulator

When

the

upper
contacts
are

closed

ignition
warning

lamp
goes
on
I
Point

gap

2

Lower
contact

3
Armature

4
Core

gap

5
Yoke

gap

6

Connecting
spring

7
Yoke

8

Adjusting
screw

9
Locle
nut
10

Adjust
spring

11
Coil

12

3mmCO
1181
n
dia

screw

13
4
mm
0
1575

in
dia

screw

14
Contact
set

15

Upper
contact

Regulator
model

Applied
alternator
a
Construction

of

voltage
regulator

TLlZ
57

LTl35
13B

I
Point

gap
10
Lock
ut

2

Charge
elay
antact
Ii
Adjust

spring

3

Connecting

sprinl
12
Coil

4
Armature
i3
3
mm

0
1181
dia

5
Core

gap
screw

6
Yoke

gap
14
4mm
O
1575
n

dia

7
Yoke
crew

8

Adju
ting
screw
15
Contact
set

9
Voltap
e

ree
ulaloT
contact

b

Cons
rue

ion
of

charg
relay

Fig
EE
5J
Structural
view
Fig
EE
50
View

of

removing
cover

As

for
the
construction
the

voltage
regulator
is

very

similar
to

the

charge
relay
as
shown

in

Figure
EE
51

EE
23

ENGINE

at
4
to
5
V

Use

i
f
DC
voltmeter
and
set

up
a
circuit

as
shown
in

Figure
EE

56

EEQ58
L
W

R

IG

Will

r

AI
W

lli

r

N
Y

vge

I

JJ
Rtl
ublOr

I
I
Spanner

Cross
head

screwdriver

I

I
Adjusting
screw

Lock
nut

Vollm
lcl

Fig
EE
55

Adjusting
Tegulating
voltage

Charging
relay

Normal

relay

operating
voltage
is
8
to

10V
as
measured

at
alternator
A
terminal

Relay
itself
however

operates
EE059

Fig
EE
56

Testing

chaTging
Telay

Connect

positive
terminal
of

voltmeter
to

regulator
lead
connector
N

terminal
with

negative
terminal

grounded

2

Start

engine
and

keep
it

idle

3
Take
voltmeter

reading

o

Volt
Below
5
2
Volt
I

Over
5
2
Volt

I
Check
for

continuity
between

N

terminals
of

regulator

and

alternator

2
Alternator
circuit

defective
if

continuity
exists
pilot
lamp
remains

lit

I

Check
fan
belt
tension

2

If
correct

remove

regulator

and

adjust
as

necessary
Pilot
lamp
remains
lit

Pilot

lamp
relay
coil
or

contact

points
out
of
order

Replace
regulator

Over
5

2
Volt

Pilot

lamp
does
not

light

Pilot

lamp
relay
assembly
is
in

good
condi

tion

SPECIFICATIONS
AND

SERVICE
DATA

Voltage
regulator

Model
HITACHI
TLl
Z
57

Regulating
voltage
with

fully
charged

battery
and

regulator
faced

downward
V
14
3
to
15
3
at
200C
680F

EE
26

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