1973 DATSUN B110 horn

Iii

I
o

t

I

I

CHASSIS

Fig
ST
2

Steering
wheel

REMOVAL

1
Remove
the

horn

ring
and

remove
the

steering
wheel

nut
and

pull
out
the

steering
wheel

by
the
use

of
a
Steer

ing
wheel

puller
ST27180000
3
Remove
the
turn

signal
and

lighting
switch

com

pletely

4
Remove
the
hand
lever

assembly
from

the
control

rod

assembly
by
unscrewing
the

fIxing
bolts

5
Remove

two

fIxing
bolts
used
to
secure
the

steering

column
to
the
instrument

panel

ST27180000

Fig
ST

3

Removing
steering
wheel
lock
nut

Note
The

horn

ring
can

be

easily
removed

by
two
bolts

2

Remove
the

steering
column
shell

Fig
ST
4

Removing
steering
column

upper
side

ST
2

DATSUN
1200

MODEL
B
11
0

SERIES

I
NISSAN

I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
SECTION
BE

BODY

ELECTRICAL

WIRING

FUSE

LIGHTING
SYSTEM

HORN

METERS
AND

GAUGES

WINDSHIELD
WIPER

AND

WASHER

IGNITION
SWITCH
AND

STEERING
LOCK

CLOCK

RADIO

HEATER
BE
1

BE
6

BE
7

BE
15

BE

18

BE
26

BE
29

BE

31

BE
32

BE

34

BULB
SPECIFICATIONS

Headlight
unit

Directional
and

parking
light

Side
marker

light

License

plate
light

Rear
combination

light

Taillight

Stop
brake

light

Turn

signal
light

Back

up
light

Meter

illuminating
lamp

Wiper
Washer
illumination

lamp

Heater

control
illumination

lamp

Ignition

warning
light

Turn

signal
indicator

light

Headlight
beam
indicator

light

Oil

pressure
warning
light

Brake

warning
ligh
t

Room

light

TURN
SIGNAL
AND

DIMMER

COMBINATION

SWITCH

Removal

Disconnect
the

combination
switch

from
the
wire

harness
at
the
connector

plug
and
flasher
unit

terrninal

Fig
BE
27

Removing
turn

signal
and

dimmer
combination

switch
BODY

Specifications
SAE
Trade
Number

12V
SO
40W
6012

12V
23
8W

1034

12V
8W
67

l2V
7
5W
89

12V
23

8W

1034

l2V
23

8W

l2V
23W

1073

l2V
23W

12V
I
7W
161

l2V
3
4W
158

l2V
3
4W
57

l2V
17W
161

l2V
17W
161

l2V
17W
161

l2V
17W

161

l2V
17W
161

l2V
IOW

2

Loosen
two
bolts
used

to
install

the
horn

ring
on
the

steering
wheel

by
applying
the
tool
from
reverse
side
of

the

steering
wheel
and

remove
the
horn

ring

3

Remove
the

steering
wheel

fixing
nut
and
remove

the

steering
wheel

4

Unscrew
two

fixing
screws
and
a

locating
screw
and

remove
the

shell
cover

5
Unscrew

two
screws
used
to
install
the
switch
on
the

steering
tube
and

remove
the
switch
from
the

locating

hole

on
the

steering
tube
Now
remove
the

switch
unit

completely

BE
10

Flashing
cycle

varies
BODY
ELECTRICAL

Faulty
contact
of

power
supply

circuit

from

ignition
switch
to

fuse

Tail
and

stop
lamp
license

lamp

back

up
lamp

Condition

Both
left
and

right
lamps
do

not

light
Probable

cause

Blown
off

fuse
or

faulty
contact

Defective

stop
larnp
switch
or

backup
lamp
switch
or

faulty

contact

Stop
larnps
and

backup

lamp
only

Faulty
grounding

Only
one
side

lamp
Burnt
out

lamp
bulb
f1lament

lights

Brightness
of

one

side

lamp
differs

from
the

other

HORN

Removal

Adjustment
Faulty
contact
of
connector
ter

minal
and

or
socket

Faulty
contact
of
connector
ter

minal

and
or
socket

BE
16

BE
16

BE
16
When
the
windshield

wiper

which
uses
the

ignition
for

power

supply
is

operated
flashing
cycle

and

brightness
change

Method
of

inspection

Check
the
fuse
for

fusing
and

faulty
contact

When

two
lead
wires
of
the
switch

are
connected
and
the

lamp
lights

the

larnp
and
circuit

are
normal

All
rear
combination

lamps
do

not

light

HORN

CONTENTS

TROUBLE

DIAGNOSES
AND

CORRECTIONS

BE
15
Repair
as

required

Corrective

action

When
the

fuse
is

fused

detect
and
COf

rect
the
cause
and

replace
the
fuse

Replace
the

switch
or

repair
the

connector

terrninal

Repair
the

grounding

cable
contact

Replace
the

larnp

with
a
new

one

Repair
or

replace

Repair
or

replace
if

required

BE
17

9HORN
r
I

01

8ATTERY

HI

IGI

s

ILl

C
iORN
BODY

FUSE
H

S
HORN
BUTTON

BGI

J
H

B
S

Il

I
n6lm

I

L
J
L

HORN
RELAY

Fig
BE
3l
Circuit

diagram
for
hom

syrtem

HORN

Removal

Remove
the
connector
loosen
the

fixing
nut
in
the

horn
center
and

remove
the
horn

unit

Adjustment

1

Secure
the

horn
unit
in
a
vise

and
connect
cables
as

shown

in

Pigure
BE
32

AMMETER
110
to
15AI

Isw
f

@

113
I

VOLTMETER

I

15
to

20VI

BATTERY
HORN

Fig
BE
32
Circuit

for
ham

adjustment

2
Set
the

switch
to

ON
and
rnake
sure
that
the

voltmeter
indicates
12
to
12
5

V

3

Listening
the
horn
for
sound
level
volurne

and
tone

adjust
sound

properly
so

that
the
amrneter
indicates
the

rated

amperage
The

adjustment
is

made

by
turning
the

adjust
screw
after

loosening
the
lock
nut
Fig
BE
33

Adjusting
hom
IIOlume

Note
When
the

adjust
screw
is
turned

Clockwise

Counterclockwise
Current
increases

Current
decreases

4

When
a

proper
sound
is

obtained

through
the
above

adjustment
rnake
sure
that
the

proper
sound
can
be

obtained
at

voltage

generated
by
the
alternator
14
to

l5V

5
Lock
the

adjust
screw
with
the

lock
nut

Consumed
current

adjusting
value
A

Sound

Plat

type
Spiral
type

High
H
2
5
390
5

0
440

Low

L
2
5

330
5
0
350

Figures
encircled
in

parenthesis
are
basic

frequencies

Hz

BE

16

BODY
ELECTRICAL

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Condition

The
horn

does

not

operate

The
horn
sounds

continuously

Reduced
volume

and

or
tone

quali

ty
Probalbe

cause

Excessively
discharged

battery

Blown
off
fuse

Improper
horn

button
contact

Defective
horn

relay

Defective

horn

Defective
horn

relay

Short
circuited
horn

button

and

horn

relay
terminal
S

Improper
fuse
wire
contact

Broken
cable

Improper
horn
button
contact
Method
of

inspection

Measure

specific
gravity
of
electro

lyte
Corrective

action

Charge
if

required

Check
the
fuse
for

fusing
and
im

Replace
fuse

proper
contact

The
horn
sounds

though
the
horn

relay
terrninal
S
is

grounded
Check
and

repair

horn
button

The
horn
sounds

though
the
horn

Replace
horn

relay

relay
terrninals
B
and

H
are

short
circuited

The
horn
does
not
sound

though

Replace
horn

the
horn

relay
terminals
B

and

H
are
short
circuited
and
the

porn
still
does
not
sound

though

the

battery
terminal
is
con

nected
to
the
horn
terminal
direct

ly

The

horn
does

not

stop
though
the

Replace
horn

relay

horn

relay
S
terminal
is

discon

nected

When
the
horn

stops
through
the

above
disconnection
check
the

horn
button
unit

particularly
care

fully

BE

17
Repair
horn

relay

terminal
S

Replace
horn

button

Correct

Repair
or

replace
if

required

Repair

d

BODY

ELECTRICAL

Distributor
Secure

ground
of

ignition
coil

Secure
contact
of

carbon
electric

pole
and

rotor

Eliminate
excessive

tip
on
the

rotor

pole
or

cap
pole
by
scrubbing
with

a
screwdriver

Check

stagger
between

rotor
and

stator

Charging

system

Sound
of

alternating
current

pre

sents
Alternator
Install
a
0
5

l
F

capacitor

on

charging
terminal
A

Note
Do
not
use

capacitor
ex

cessively

If

capacity
is
used
ex

cessively
the
alternator
coil

will
be
broken

When

the
accelerator

pedal
is
de

pressed
or
released
noise

presents
Regulator
Install
a
0
5
l
F

capacitor
on
A

terrninal
of
the

voltage
regulator

Supplement
equipment

When

engine
starts
noise

presents

Noise

still

presents
even
after

stopping
the

engine
Operative
noise

of
ther

rnometer
and
fuel

gauge
Install
0
1
l

F

capacitor
between

terminal
and

ground
wire

Note
If

a

capacitor
having
ex

cessive

capacity
is
used
indi

cation
of
meter
will
be
devi

ated

Noise

presents
when
horn
is
blown

Horn
Install
a
0
5

IF

capacitor
on
the

horn

relay
terminal
or
horn

switch

Noise

presents
when
turn

signal

lamps
are

operated
Flasher
unit
Install
a
0

5
l
F

capacitor

Note
a
Be

sure
to
locate

capacitor
most
near

position

of
noise

source
and

connect
in

parallel
completely

d
Make

installation
and

conneCtion

securely

b

Cut
lead

wire
as
short
as

possible

c
Ground
wire
should
be

placed
on
the

body
e

Carefully
identify

marks
IN
or
OUT

BE
33

ENGINE

Fig
EM
IO
Intake

manifold

Fig
EM
12
Intake

and
exhaust

manifolds

Fig
EM
It
Exhaust

manifold

ENGINE
DISASSEMBLY

CONTENTS

CLEANING
AND

INSPECTION

DISASSEMBL
Y
EM
4

EM
5
PISTON
AND
CONNECTING
ROD

CYLINDER
HEAD
EM
7

EM
7

CLEANING
AND
INSPECTION
breakage
rust

damage
and
loss

Clean
the

engine
thoroughly
before
disassembly

Before

cleaning
the

engine
remove
the
electrical

parts

and

plug
up
the
carburetor
air
horn
to
avoid
intrusio
n
of

foreign
matter
2

Cylinder
block

Check

thoroughly
the

water

jacket

for
cracks
and

breakage

3
Clutch

howing
Check
for
cracks

1
The

engine
exterior
Check
the

covers
and
bolts
for
4

Oil

pan
Check
for
excessive
rust

EM
4