1973 DATSUN B110 battery

The

lamp
does

not

go
out
when

the

engine
is

started
Faulty
charging
system
BODY

Inspect
the

charging

system

WINDSHIELD
WIPER
AND

WASHER

Description

Wiper
motor

replacement

Wiper
blade

operating
range
CONTENTS

BE
26

BE
27

BE
27

Description

The
windshield

wipers
consist

of

wiper
motor
link

mechanism

wiper
arms
and

blades
The

wiper
motor

unit

consists
of

a
motor
and
auto

stop
mechanism
The

wiper
rnotor
is

of
a
2
speed

type

When
the

wiper
switch
knob
is

pulled
to
the
I

st

step

the
windshield

wipers

operate
at

low

speed
and
when

pulled
to
the
2nd

step
operate
at

high
speed

The

wiper
motor
unit
is

located
on

the
cowl
dash
in

BATTERY

Cl

WIPER

MOTOR

rrQ

J
WASHER
MOTOR

IB

ILRI

L
CJ

LA

t
Y

I
Ll

j

IBI

1
f
I

LW

I
Wiper
washer
switch

replacement

Washer
nozzle

adjustment

TROUBLE

OIAGNOSES
ANO

CORRECTIONS
BE
27

BE
27

BE
28

the

engine

compartment
and
the

link
mechanism
is

located
behind
the

instrument

panel

The

electrically
operated
windshield
washer
consists
of

washing
fluid
lank

with

rnotor
and

pump
washer

nozzles

and

vinyl
tube
used

to

connect
those

compo

nents

The

windshield
washer

switch
is

combined
with

the

windshield

wiper
switch
to
a

single
unit

When

operating

the
washer

twist
the

switch
knob

IG

FUSE

W

v

l

i

f
WIPER
SWITCH

10FFI
I
2

I
TWIST

I

y

ILl

I

b

I

J
6

I
BLII

Fig
BE
43
Circuit

diagram
for
windshield

wiper
washer

system

BE

26

mechanism
is
installed
on
the

steering
jacket
tube
When

the

key
is
set
to

Lock

position
and

removed
the

steering
lock

spindle
is

inserted
in
a
notch
in

the
collar

which

is

stationarity
set
on
the

steering
shaft
to
lock
the

steering
wheel

The

ignitiun
switch

is
installed
on
the

back
of

key

cylinder
with
a

attaching
screw
and

interchangeable

tf
iY
t

7

a

1

Ignition
switch

part

2

Key
cylinder

part

3

Steering
jacket
tube

4
Lock
collar
5
Lock

pindle

6

Steering
shaft

7
Self

shear

type
screw

8

Attaching
screw

Fig
BE
50

Steering
lock

Key

position

Terminal
OFFor

GARAGE
Lock
ON

ST
ART

B

Battery

IG

Ignition

S
Starter

R
Resistance
b

1

Steering
lock

replacement

For
the

purpuse
of

tamper
proof
the
self
shear

type

screws
are

used
and
their

heads
are
sheared
off
when

installed
so
that

the

steering
lock

system
cannot
be

removed

easily
Replace
the

steering
lock

proper
in

accordance
with
the

following
instructions
when

required

Loosen

two

attaching
screws
and
break
the

remaining

twu
self
shear

type
screws
with

a
drill

or
other

proper

tool

Now
remove
the

steering
lock

proper
from
the
BODY

BE
30
steering
jacket
tube
When

installing
a
new

steering
lock

proper
be

sure
tu

tighten
two
new
self
shear

type
screws

to
shear

off
their

heads

Warning
switch
and

warnmg
buzzer

Fig
BE
51

Warning
switch

The
circuit
of
this

warning
system
is
closed

when
the

door
is

opened
with
the

steering
unlocked
because
the

door
switch
and

warning
switch

are
connected
in
series

When
the
cicuit
is
closed
the

buzzer
sounds

When

replacing
the

warning
switch
disconnect

two

cables
remove
the

cap
loosen
two

attaching
screws
and

remove
the

warning
switch

The

warning
buzzer
is
installed

on
the

back

left
side

of
the
instrument

panel
with

two

attaching
screws

FUSE
WARNING

SWITCH

WARN

BUZZ
G

n

WITCH

t

Fig
BE
52
Circuit

diagram
for

warning
system

EMISSION
CONTROL
AND
TUNE
UP

EMISSION
CONTROL
SYSTEM

AN
D

ENGINE
TUNE
UP

CONTENTS

BASIC
MECHANICAL
SYSTEM
ET

Checking
and

adjusting
dash

pot

Adjusting
intake
and
exhaust
valve
automatic
transmission
model

only
ET
9

clearances
ET
1

Checking
carburetor
return

spring
ET
9

Checking
and

adjustin9
drive
belt
ET
2

Checking
choke
mechanism
choke
valve

Retightening
cylinder
head
bolts
manifold
and

linkagel
ET
9

nuts
and
carburetor

securing
nuts
ET
2

Checking
anti

dieseling
solenoid
ET
9

Checking
engine
oil
ET
2

Replacing
fuel
filter
ET
10

Replacing
oil
filter
ET
3

Checking
fuel
lines
hoses

pipings

Changing
engine
coolant
L
L
C
ET
3
connections
etc
ET10

Checking
cooling
system
hoses
and
THROTTLE
OPENER

CONTROL
SYSTEM

ET
10

connections

ET
4
Checking
and

adjusting
throttle

opener
ET
13

Checking
vacuum

fittings
hoses
and
TRANSMISSION
CONTROLLED
VACUUM

connections

ET
4
ADVANCE
SYSTEM

ET
17

Checking
engine
compression
ET
4
Checking
electrical
advance
control

system
ET
19

Checking
exhaust
manifold
heat
control
AUTOMATIC
TEMPERATURE
CONTROL
AIR

valve

ET
5
CLEANER
A
T
C
AIR
CLEANER

ET
20

IGNITION
AND
FUEL
SYSTEM

ET
5
Replacing
carburetor
air
cleaner
filter

ET
20

Checking
battery
ET
5
Checking
hot
air
control
valve

ET
20

Checking
and

adjusting
ignition
timing

ET
5
CRANKCASE
EMISSION
CONTROL

Checking
or

replacing
distributor
breaker
SYSTEM

ET
22

point
condenser
and

spark
plugs
ET
6
Checking
or

replacing
PCV
valve

ET
23

Checking
distributor

ignition
wiring
and

Checking
ventilation
hoses

ET
23

ignition
coil

ET
7
EVAPORATIVE
EMISSION
CONTROL

Checking
distributor

cap
and
rotor

ET
7
SYSTEM
ET
23

Adjusting
carburetor
id
Ie

rpm
and

Checking
engine
compartment
hose

mixture
ratio

ET

8
connections
and
fuel

vapor
control
valves
ET
23

Checking
fuel
tank

vacuum
relief
valve

operation
ET
24

BASIC
MECHANICAL
SYSTEM
1
Start

engine
and
run
it

until
it
is
heated
to

operating

temperature
or
at
least
more
than
800C

I760F
of

engine
oil

temperature
then

stop
engine
Adjusting
intake
and
exhaust

valve
clearances

Valve
clearance

adjustment
should
be
made
while

engine
is

stationary

To

adjust
proceed
as
follows
2
Rotate
crankshaft
to

bring
No
1

cylinder
in

top
dead

center
on
its

compression
stroke

3

Remove
valve
rocker
cover

to

gain
access
to
valve

ET
1

EMISSION
CONTROL
AND

TUNE
UP

reading
cylinders
through
spark
plug
hole

Repeat

compression
check
on
these

cylinders

1

If

compression
improves
considerably

piston
rings

are
defective

2
If

compression
does
not

improve
valves
are

sticking

or

seating
improperly

3
If
two

adjacent
cylinders
indicate
low

compression

and

injecting
oil
on

pistons
does
not
increase

compres

sion
the

cause

may
be
a

cylinder
head

gasket
leak

between
the

cylinders
Engine
oil
and
coolant

in

cylinder
could
result
from
this

problem

Compression
pressure

12
S
to
14
S

kg
cm2

178
to

206

psi
at
3S0

rpm

Checking
exhaust
manifold
heat

control

valve

Check
heat

control
valve
for

proper
operation
If
it

does
not

operate
properly
trouble
is
due
to

excess
carbon

on
shaft
or

damaged
shaft
Clean
if

necessary
The
bimetal

should
be
also
checked
for

proper
function

IGNITION

AND

FUEL
SYSTEM

Checking

battery

Check

electrolyte
level
in
each

battery
celL

L

Unscrew
each

filler

cap
and

inspect
fluid
leveL
If

fluid

level
is

low
add

distilled
water
to

bring
level

up
to

app
roximately
10
to
20

mm
0

3937
to
0
7874
in
above

plates
Do
not
overfilL

2
Measure

specific
gravity
of

battery
electrolyte
ET002

Fig
ET
B

Checking
the

specific
gravity
of

battery
electrolyte

Permissible
Full

charge
value

value

at
200C
68OF

Frigid
climates
Over
1
22
1
28

Tropical
climates
Over
1
18
1
23

Other
climates
Over
L
20
1
26

Clean
the

top
of

battery
and
terminals
with
a
solu
lion

of

baking
soda

and
water
Rinse
off
and

dry
with

compressed
air

The

top
of

battery
must
be
clean
to

prevent
current

leakage
between
terminals
and
from

positive
terminal
to

hold
down

clamp

In
addition
to
current

leakage
prolonged
accumulation

of

acid
and
dirt
on
the

top
of

battery
may
cause

blistering

of

the
material

covering
connector

straps
and
corrosion

of

straps
After

tightening
terminals
coat
them
with

petro

laturn

vaseline
to

protect
them
from
corrosion

Checking
and

adjusting
ignition

timing

I

Check

spark

plugs
and
distributor
breaker

points
for

condition

2

Thoroughly
wipe
off
dirt

and
dust
from

timing
marks

on
crank

pulley
and
front

cover

3
Warm

up
engine
sufficiently

ET
5

EMISSION

CONTROL
AND
TUNE
UP

Ignition
switch

0

Speed
switch

Ignition
switch

6

Transmission
A12

Engine
with
Manual
Transmission

l

Battery

J

Below
10

mph

switch

ON
To
throttle

opener

Servo

diaphragm

Needle
valve

To
air
cleaner
To

intake

manifold

f

Vacuum
control

valve

p

Throttle

opener

noid

ON
Car

speed
below
16
km
h
10
MPH

OFF

Car

speed
above
16
km
h
10
MPH

A12

Engine
with
Automatic
Transmission

Inhibitor
switch
1

J
Battery

To
intake

manifold

t

ET
11
OFF
ON

Fig
BY
16

Schematic

drawing
of
throttle

opener
system
To
throttle

opener

Servo

diaphragm
Vacuum
control

valve

P

Throttle

t
opener

solenoid

7
7

ON
transmission
in
N
and
P

positions

OFF
Transmission
in
0

position

ENGINE

Gear
Vacuum
advance
Note

R
No

1st
No

2nd
No

3rd
No

4th
Yes
Immediately
after

starting
the

engine
in
cold

weather
vacuum
advance
is
available

for
all

gear

positions

A12

Engine
with
Manual
Transmission

Distributor

Ignition
switch

8

1

J
Battery
Thermo
switch

9

Transmission

L

r
l

r
Vacuum
advance
unit

To
carburetor

Needle

valve

OFF

l
To
air
cleaner

ON

Vacuum

cutting
valve

solenoid

Top
switch

Top
off
I

7
1

OFF
Vacuum
actuated

ON
Vacuum
eminated

into

atmosphere

Fig
ET
28

Schematic

drawing
of
transmission
controlled
vacuum

advance

system

When

electric
current
flows

through
the

vacuum

cutting
valve

solenoid
the
needle
valve

opens
and
intro

duces
air
from
the
air
cleaner
into
the
vacuum
advance

unit

of
the
distributor

through
the

vacuum
hose
and
the

vacuum
advance
is
eliminated
When
the
vacuum

cutting

valve
solenoid
is

deenergized
the

needle
valve

closes
and

the
vacuum
created

by
the
carburetor
is

introduced
into

the

vacuum
advance
unit
of
the
distributor
to

provide

usual
vacuum
advance

The

Top
switch
located

on
the
transmission
case

operates
so
as

to

interrupt
the
flow

of
electric
current

when
the

gear
is

placed
into

Top
but

allows
it

to
flow

in

other

gear
positions

Fig
ET
29

Top
switch
installation

ET
18

EMISSION
CONTROL
AND
TUNE
UP

SERVICE
DATA
AND

SPECIFICATIONS

Valve

clearance

Hot
Intake

Exhaust
mm
in

rom

in

rom
in

kg
lb
0
35
0
014

0
35
0
014

10
to
15
0
394
to
0
591

10
22

Fan
belt
tension

Tightening
torque
Cold

Cylinder
head
bolts

kg
m

ft
lb

1st

turn

2nd
turn

Re

tightening
torque
Hot

Manifold
nuts

Carburetor
nuts
4
0

to
4
5

29
to
33

5
5

to
6
0
40

to
43

6
0

to
6
5
43

to
47

0
9

to
I
4

6
5
to
10

0
5

to
1
0
3

6
to
7
2

1
5

to
2
0
II
to
14

Spark
plugs

Oil

capacity
of

engine
including
oil
ftIter

Maximum
L

US

gal
Imp
gal

L

US

gal
Imp
gal
3
3

U
14

2
3

Ii
Minimum

Water

capacity
of

cooling
system

Without
heater

L
US
gal

Imp
gal

With
heater

L

US

gal
Imp
gal
4
2
1

U

4
9

I
4
11

12
5

to
14
5

I78
to
206
350

Compression
pressure
at

rpm
kg
em

psi

Battery
specific
gravity

Permissible
value
Fully
charged
value

at
200C
680F

Frigid
climates

Tropical
climates

Other

elima
tes
Over
1
22

Over
1
18

Over
1
20
1
28

1
23

1
26

Ignition
timing
degree

Distributor
50
B
T
D
C

Condenser

capacity
mm
in

degrees

IlF
Micro
Farad
0
45
to

0
55
0
018

to
0
022

49
to
55

0
22

5
Point

gap

Dwell

angle

Condenser
insulation
resistance
Mil

Mega
ohms

ET
25

ENGINE

Spark
plugs

Cap
mm
in
0
8
to
0
9
0
03110
0
035

Idle
CO
ldie

speed

Manual
transmission

rpm

rpm
1
5

to
5
800

1
5
to
5

650
in
D

position
Automatic
transmission

Dash

pot

Setting

engine
speed

rpm
1
900

to
2
000

Throttle

opener
at
sea
level

Setting
vacuwn

pressure

Manual
transmission

Automatic
transmission

Setting

engine
speed
no
load

Servo

diaphragm
full
stroke
rpm

mm
in
500
to
540
19
7

to
21
3

480
to
520

18
9
to
20
5

1
650
to
1
850

5
0
1969
mmHg
in
Hg

mmHg
in
Hg

Theono
switch
Temperature
rises

from
low
to

high
oC
0

F
above
5

41

Flow

guide
valve

Opera
ting

pressure
mmHg
in

Hg
10
0
4

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Troubles
Possible
causes
Remedies

CANNOT
CRANK

ENGINE
OR
SLOW

CRANKING
Improper
grade
oiL
Replace
with

proper
grade
oiL

Discharged
battery
Charge
battery

Defective

battery
Replace

Loosen
fan
belt
Adjust

Trouble
in

charge
system
Inspect
charge
system

Wiring
connection
trouble
in

starting
circuit
Correct

Defective
starter
switch
Repair
or

replace

Defective
starter
motor
Repair
or

replace

ET
26

I