1973 DATSUN B110 clock

BODY
ElECTRICAL

When
the

ignition
switch
is
set
to
ON
the

ignition

wa

rning
circuit
is

closed
and
current
flows
flows
from
the

ignition
switch
to
the

warning
lamp
bulb

and

ground

through
the

regulator
When
the

engine
is
started
and
the

generator
comes
into
operation
the

generator
output

current

opposes
the
current
flowing
from
the

warning

lamp
in

effect
it
breaks
the

warning
circuit

ground

connection
and
the

lamp
goes
out

l

r

hffi
u

z
Ignition
switch

I
Q
6

I
0

c

M
1
E

8

ca
i

L

g

PI
lot
c

P

I

j

co

rt
0

relay
E
0

5

y
y
1

N
N
3

Alternator

Regulator

Fig
BE

41
Circuit

of
ignition
warning
system

HAND
BRAKE
WARNING
LAMP

This

lamp
functions
both
hand
brake

warning
larnp
and

BULB
SPECIFICATIONS
service
brake
line

pressure
differential
warning
lamp

When
a

difference
between
front
and

rear
brake
line

pressures
reaches
the
rated

range
13
to
17

kgfcm2
185

to

242
lb

sq
in
the

ground
circuit
for
the

warning
lamp

is

closed
and
the

warning
lamp
lights

IGNITION
SWITCH

WARNING

LAMP

L
E

WARNING

SWITCH

1
SERVICE

BRAKE
LINE

PRESSU
R
E

DIFFERENTIAL

WARNING

J
SWITCH

Fig
BE

42
Circuit

diagram
for
brake

warning

system

tern
Specifications

Square

type
meter
Round

type
meter

Meter
illumination

larnp
VoW
12
3
4
2
12

1
7
3

Turn

signal
pilot
lamp
VoW
12
3
4
2
12
1
7
2

Head

lamp
main
high
beam

VoW
12
3
4

I
12

17
1

pilot
lamp

Ignition
warning
lamp
VoW
123
4

I
12
17
1

Oil

pressure
warning
lamp
VoW
12
3
4

1
12
1
7

1

Hand
brake

warning
lamp
VoW
12
1
7
1

for
U
S
A

CANADA

Clock
illumination

lamp
VoW
123
4
I
12
17
2

Figure
encircled
in

parentheses
indicates
number
of
bulbs
used

BE
21

BODY

ELECTRICAL

Wiper
motor

replacement

First

of
all
remove
the

connector

plug
from
the

wiper
motoI

2
Remove
a
nut
used
to
connect

wiper
motor
worm

wheel
shaft
to

the

connecting
rod
from
passenger

compartment
side
dash

panel

3
Loosen
three
bolts
used
to
install
the

wiper
motor
on

the
cowl
dash
remove
the

wiper
motor

4
Reinstall
a
new

wiper
motor
in
reverse

sequence
of

removal

Fig
BE
44

Wiper
motor

Q

V
rt

ir
o
y

At

Jllif

Fig
BE
45

Wiper
motor

linkage

Wiper
blade

operating
range

When

removing
the

wiper
arm
loosen

the

wiper
arm

attaching
nut
and

pull
out
the

wiper
arm
from
the

pivot

shaft
When

installing
the

wiper
arm
on
the

pivot
shaft
provide
the
arm
with
a

proper
installation

angle
so
that

the
windshield

wiper
blade
is

positioned
correctly
The

wiper
arm

attaching
nut

tightening
torque
is
60
5

kg
m

434
36
2lb
ft

Fig
BE
46

Removing

wiper
arm

00

I

i

Fig
BE
47

Wiper
arm

installation

Wiper
washer
switch

replacement

Remove
the

connector
from
back
of
the

wiper

washer
switch

2

Depressing
and

turning
the

wiper
switch

knob

counterclockwise
remove
it

3
Loosen

the
escutcheon
and

remove
the

wiper
switch

from
the
cluster
lid

Washer
nozzle

adjustment

When
the

washer
nozzle
is
installed
or
when
washer

fluid
is
not

sprayed
properly
adjust
the
nozzle
direction

so
that

fluid
is

sprayed
in

range
indicated
in

Figure
BE
48

BE
27

BODY
ELECTRICAL

CLOCK

Installation

upper
portion
of
the

instrument

panel

Connect
red

blue
cable
or
red

green
cable
for
illumi

nation

lamp
of
the

clock
to
the
terminals
on
the

printed

circuit
board

for
illumination

lamp
on
the

meter

housing

Ground
the
clock

ground
cable
In
the

case
of
a

square

type
clock

tighten
the

ground
cable

together
with

the

meter

housing
installation
screw
1

When

installing
clock

first
of
all

remove
the
cluster

lid

2
Remove
the
mask
and
install
the

clock
on
the
cluster

lid
in
the

place
of
mask

3
Connect
blue
cable
or

yellow
red
cable

coming
out

from
the
clock
to
the
blue
cable
of

harness
laid

along
4
Reinstall
the

cluster
lid

RED
BLUE

CABLE
BLUE

CABLE

Fig
BE
53

Square
type
clock

Fig
BE
54

Round

type
clock

BE
31

EMISSION
CONTROL
AND

TUNE
UP

Checking
and

adjusting
dash

pot

automatic
transmission
model

only

Check

operation
of
dash

pot
It
should

not
be
cracked

or

bound
It

is
also
essential
to
check
to
be
certain

that
it

is
in

correct

adjustment

L
Check
to
be
sure
that
dash

pot
contacts

stopper
lever

when

engine
speed
reaches
1
900

to
2

000

rpm

2

Engine
should
be
slowed
down
from
3

000
to
1

000

rpm
within
a
few

seconds

Readjust
dash

pot
or

replace
it
with
a
new
one
if
it

fails

to
meet

the
above

conditions

Checking
carburetor
return

spring

Check
throttle
return

spring
for

sign
of

damage
wear

or

squareness
Discard

spring
if
found
with

any
of
above

excessively
beyond
use

Checking
choke
mechanism

choke
valve
and

linkage

1

Check
choke
valve
and

mechanism
for
free

operation

and
clean
or

replace
if

necessary

A

binding
condition

may
have

developed
from

petro

leum

gum
for
motion
on
choke
shaft
or

from

damage

2

Check
bimetal
cover

setting
position
The

index
mark

of
bimetal
cover
is

usually
aligned
at
the

middle

point
of

the
scale

Note
When
somewhat
over
choked
turn
bimetal

caver

clockwise

slightly

3
Prior
to

starting
check
to
be
sure
that

choke
valve

closes

automatically
when

pressing
down
on
accelerator

pedal

Should
it
fail
to
close

automatically
the
likelihood
is

that
fast
idle
cam
is
out
of

proper

adjustment
or

that

bimetal
is

not

properly
adjusted
calling
for

adjustment

Refer
to
Carburetor
in
Section
EF

Page
EF
15
Checking
anti

dieseling
solenoid

If

engine
will
not

stop
when

ignition
switch
is
turned

off

this
indicates

a

striking
closed
solenoid
valve

shutting
off

supply
of
fuel
to

engine
If
harness
is
in

good

condition

replace
solenoid
as
a
unit

To

replace
proceed
as
follows

Removal

and
installation

of
anti

dieseling
solenoid

Removal

Solenoid
is
cemented

at

factory
Use

special
tool

STl
91
50000
to
remove
a

solenoid

When

this
tool
is

not
effective
use
a

pair
of

pliers
to

loosen

body
out
of

position

lnstalltion

I
Before

installing
a
solenoid
it
is

essential
to
clean

all
threaded

parts
of
carburetor

and
solenoid

Supply

screws
in
holes
and
turn
them
in

two
or

three

pitches

2
First
without

disturbing
the
above

setting
coat
all

exposed
threads
with
adhensive
the

Stud
Lock
of

LOCTlTE
or

equivalent

Then

torque
screws
to
35
to
55

kg
cm
30

to
48
in

lb

using
a

special
tool
STl9150000

After

installing
anti

dieseling
solenoid
leave
the
carbu

retor
more
than
12

hours
without

operation

3

After

replacement
is
over
start

engine
and
check

to
be
sure
that
fuel
is
not

leaking
and
that
anti

dieseling
solenoid
is
in

good
condition

Notes
a
Do
not
allow
adhesive

getting
on
valve

Failure
to
follow
this
caution
would
result
in

improper
valve

performance
or
clogged
fuel

passage

b
I
n

installing
valve
use
caution
not
to
hold

body
directly
Instead

use

special
tool

tighten

ing
nuts
as

required

ET
9

ENGINE

Adjusting
throttle

opener
setting
engine
speed

1
Connect
servo

diaphragm
vacuum
hose

directly
to

intake
manifold

connector
without

laying
through

vacuum
control
valve

2
With

negative
pressure
vacuum
in

intake
manifold

servo
diaphragm

operates
and

thus
the

primary

throttle
valve

is

opened
When

servo

diaphragm
nor

mally
operates

engine
speed
rises

reaching
1
650

to

1

850

rpm
When

engine
speed
is

not
within
this

range

turn

adjusting
screw
as

necessary
See

Figure
ET
20

l
When

engine
speed
is
lower

than
the

prescribed

range
turn

adjusting
screw

clockwise

2
When

engine
speed
is

higher
than
the

prescribed

range
turn

adjusting
screw

counterclockwise

Upon
completion
of
the

adjustment
set

adjusting

screw
lock
nut

secwely
making
sure
that

engine
speed

is
in

the

prescribed

range

@
II
I
AdJustmg
screw

2
Lock

nut

Fig
ET
20
Servo

diaphragm
adjusting
screw

Servo

diaphragm

Servo

diaphragm
stroke

Link

EC015
3

Disconnect
servo

diaphragm
vacuum

hose
from

intake

manifold
and
connect

it
to

vacuum
control

valve

Connect

vacuum
hose
of

control

valve
to
intake

manifold
normal

piping

Racing

Place
shift

lever
in

neutral
for

MfT
or
N

or
p

for

AlT
Raise

engine
speed

up
to

approximately
3

000

rpm
under
no
load
and

close
throttle

valve

by

releasing

it

from
hand

Examine

engine
speed
to
see

whether
it
falls
to

idling

speed

I
When

engine
revolution
rails
to

idling
speed

See

Figure
ET
24

The

primary
throttle

valve
is

opened
by
the
link

connected

to
it

When
the

engine
speed
is
increased

to

approximately
3

000

rpm
and

lowered

natually

from
this

speed

changes
in

servo

diaphragm
link

stroke
manifold

vacuum
and

en
ine

speed
are
as

shown
in

Figure
ET
21

o

u

u

0

2
Se
o

diaphragm
link
stroke

I
u

2

Full

0

o

Intake
manifold
vacuum

u

c

E

c

O
3000

c

e

Engine
speed

2000
g

i

c

1000

T
j

Time

second

Fig
ET
21

Changes
in
servo

diaphragm
link
stroke
intake

manifold
vacuum
and

engine
speed

ET
14

ENGINE

How
to
read

Figure
ET
22

Determining
operating

pressure
and

adjustment
of
vacuum
control
valve

1
When

atmospheric
pressure
is
known

operating

pressure
is
found

by
following
the

arrow
line
A

When
altitude
is
known

operating
pressure
is
found

by
following
the
arroW
line
B

2
Turn

the

adjusting
screw
of
the

vacuum
control

valve
See

Figure
ET
23
and

adjsut
the
vacuum

control
valve
so
that

negative
pressure
in
the
intake

manifold
is

suspended
for

a
few
seconds
at
the
value

of

operating
pressure
found

as
described
in
I
above

while
the

engine
speed
decreases
from
3

000
to

1

000

rpm

I
Vacuum

adjusting
screw

2
Vacuum
control
valve

3

Lock
screw
4
Throttle

opener

solenoid

5
Control
valve

assembly

Fig
ET
23
Vacuum
control
valve

II
When

engine
revolution
does

not
fall
to

tdling
speed

Intake
manifold

I
Throttle

opene
operating

I
vacuum
curve
when

racing

Operating

pressure

Idling

Engine
evolution

3
000
rpm
Notes
a
When

turning
the
vacuum

adjusting
scre
N
do

not

depress
the
screw

with
a
screwdriver

b
When

measuring
operating
pressure
be
sure
to

tighten
the
lock
screw
of
the
vacuum

control
valve

first

c
When

the
servo
diaphragm
does
not
draw
the

link
or

operating

pressure
is

high
vacuum
turn
the

vacuum

adjusting
screw
clockwise
When
the
servo

diaphragm
draws
the
link
at

idling
speed
or

operating
pressure
is
low
vacuum
turn
the
vacu

um

adjusting
screw
counterclockwise

Set
lock
screw

stationarily

repeat
the
above

described

adjustment
and
make

sure
that
tho

operating
pressure
is
correct
and
that
the

engine

speed
settles
down
at
the
rated

idling

speed

When

engine
revolution
does
not
CaU
to

idling

speed
See

Figure
ET
24

When
the

engine
revolution
does
not

fall
to

the

idling
speed
it
is

necessary
to
reduce

the

idling

negative
pressure
of
the
intake
manifold
lower

than

the

operating
pressure
of
the
throttle

opener
See

Figure
ET
24
case
of

Il
Il

I
When

engine
revolution
falls
to

idling
speed

Intake
manifold

I
Throttle

opene
operating

I
vacuun
curve

when

racing

No
load

No
load

Operating

pressure
I

I

I

I

I

I

I

I

I

Idling
Engine
revolution
3
000

rpm

Fig
EY
24

Characteristic
curves

of
throttle

opener

In

this
case
B
it
is

necessary
to

labour
the

engine

on
road
I
by
chassis

dynamometer
2

or
by

raising
rear
axle

by
stand
3

The
car
should
then
be
accelerated
from
64
to
80
kro
h
40
to

SO
MPH

in

top
gear
for
M
T
or

0

position
for
A

T
After

the
above

procedure
has
been

completed
the

ET
16

FUEL
SYSTEM

c

Oke
valve

1

Or

Rubber
band

Fig
EF
2B

Adjusting
choke
unloadeT

Hi
metal

setting

Measurement
of
bi
metal
heater

resistance
Install
the

bi
metal
cover
in

place
on

the
carburetor
Make

sure
that

the
resistance

across
the

terminal
and
the
carburetor

body

is
in

the

range
from
8
6

to
9
0

ohms
Measure

the

resistance
without

electric
current

through
the

heater
and

at
about

210e
700F

Note
Use
an
accurate

measuring
instrument
such
as
a

wheatstone

bridge

2
Bi
metal

cover

setting

Position
the
hi

metal
cover
until
the
index

mark
is

aligned
at
the
middle

point
of
the
scale

Note
When
somewhat
over
choked
set
bi
metal

cover

after

turning
it
clockwise

slightly
Fig
EF
29

Setting
hi
metal
cover

EF
17

ENGINE
ElECTRICAL
SYSTEM

Ambient

temperature
Rated

regulating
voltage

roC
OF
V

10
14

14
6
to
15
6

0
32

14
45
to
15

45

10
50
14
3

to
15
3

20
68
14
15

to
15
15

30

86
14

0
to
15
0

40
104

13

85
to
14
85

Note
8

Do
not
measure

voltage

immediately
after
driv

ing
Do
this
while

regulator
is
cold

b
To

measure
voltage
raise

engine
speed

gradual

ly
from

idling
to
rated

speed

c

Voltage
may
be

approximately
O
3V

higher

than
the
rated
for
two
to

three
minutes

after

engine
is
started
or
more

specifically
when

regulator
becomes
self
heated
Measurements

should

then
be
made
within
one
minute
after

starting
engine
or
when

regulator
is
cold

d

The

regulator
is
of
a

temperature
compensating

type
Before

measuring
voltage
be
sure
to

meas

ure

surrounding
temperature
and
correct
measure

ments

according
to

the
table
in
the
left
hand
side

ADJUSTMENT

Voltage
regulator

As

the
result
of
above
measurement
when
the

regu

lating
voltage
is
deviated
from
the
rated
value

adjust
the

regulator
in
accordance
with
the

following
instructions

I

Inspect
contact
surface
and
if

rough
lightly
polish

the
surface
with
fine

emery
paper
500
or

600

2
Measure
each

gap
and

adjust
if

necessary
Adjust
the

core

gap
and

point
gap
in
that
order
No

adjustment
is

required
for
the

yoke
gap

J

Adjusting
core

gap

Loosen
the
screw
4
mm
0
1575

in
diameter
which

is
used
to
secure
the
contact
set
on

the

yoke
and
move

the
contact

upward
or
downward

properly
See

Figure

EE
53
t

2

I

I
EE056

4
mm
dia

0
1575
in

dia

screw

Cross
head

screwdriver
Contact
set

Thickness

gauge

Fig
EE
53

Adjusting
COTe

gap

4

Adjusting
point
gap

Loosen

the
screw
3

mm
0

1181
in
diameter
used

to

secure
the

upper
contact
and

move
the

upper
contact

upward
or
downward

adequately
See

Figure
EE
54

EE057

1
Thickness

gauge

2

3
mm
dia
0

1181
in

dia
screw
3
Cross
head
screwdriver

4

Upper
con

tact

Fig
EE
54

Adjusting
point
gap

5

Adjusting
voltage

Adjust
regulating
voltage
with
the

adjusting
screw

When

increasing
voltage
loosen
the

lock
nut
used
to

secure
the

adjusting
screw
and
turn
the

adjusting
screw

clockwise
When

decreasing
turn
this
screw
counterclock

wise
See

Figure
EE
55

EE

25