1973 DATSUN B110 Service Repair Manual

BODY

Speedometer
TROUBLE
DIAGNOSES
AND
CORRECTIONS

Condition

The

speedorneter
pointer
and

odometer
do
not

operate

The

speedorneter
pointer
de

flects

widely

Unstable

speedometer
pointer

Unusual
sound
occurs
in

re

sponse
to
increase
of

driving

speed

Inaccurate
speedometer
indi

cation

Inaccurate
odometer

operation
Probable
cause

Improperly
tightened
speedometer
cable
union

nut

Broken

speedometer
cable

Damaged
speedorneter
drive

pinion

Defective

speedorneter

Rapidly
bent

speedometer
cable

Damaged
speedometer
drive

pinion
gear

Defective

speedometer

Irnproperly
tightened
speedometer
cable
union

nut

Defective

speedometer
cable

Defective

speedorneter

Excessively
bent
or
twisted

speedometer
cable

inner
wire
or
lack

of
lubrication

Defective

speedorneter

Defective

speedorneter

Irnproperly
meshed
second
and
third

gear
worm

gears

Faulty
feeding
due
to
deformed
odometer
and

pinion
carrier

BE
22
Corrective
action

Retighten
union
nut
cor

rectly

Replace

Replace
the
drive

pinion
gear

Replace

Correct
or

replace

Replace
the

pinion
gear

Replace

Retighten
union
nut

correctly

Replace
the
cable

Replace

Replace
the
meter
cable

Replace

Replace

Replace
the
meter

Replace
the
meter

BODY
ELECTRICAL

Thermometer
and
fuel
meter

Condition

Both
therrnorneter

and
fuel
rneter
do

not

operate

Both
thermorneter

and
fuel
rneter

indicate
inaccu

rately

Thennometer
Probable

cause

Blown
off
fuse
or

improper
coo

nection

Defective

voltage
regulator
Dam

aged
fused
or

open
contact

Defective

voltage
regulator
Bro

ken
heat
wire

seized
contact
and

or

improper

grounding

Improper
cable
contact

The
thermometer
Defective
thermal
transmitter

does
not

operate

Defective
thermometer

The

pointer
indi
Defective
thermal
transmitter

cates
maximum

temperature

Defective
thermometer
Method
of

inspection

Check
the
fuse
for

fusing
and

improper
contact

Meter

operates
excessively

Meter

operates
slightly

The

pointer
deflects
when
ther

mal
transrnitter

yellow
white

ca

ble
is

grounded

The

pointer
does
not
deflect

when
thermal
transmitter

yellow

white
cable
is

grounded

The

pointer
moves
to
the
low

limit

when
the

ignition
switch
is

turned
off

The

pointer
indicates
maximum

temperature
even

after
the

ignitoD

switch
is

turned
off

BE
23
Corrective

action

Replace
after
cor

recting
the

cause
if

fused

Correct
coo

tact

The

voltage
regulator

is
combined

with
the

thermometer
to
a

single
unit

When
the

voltage

regulator
is

defective

replace
it

together
with
the

thermometer

Replace
together

with
thermometer

Check
the

cable
be

tween
fuse
and
meter

for

improper
contact

and

repair
if

required

Replace
the
ther

mal
transmitter

Replace
the
ther

mometer

Replace
the

ther

mal
transmitter

Replace
the
ther

mometer

The
thermome

ter
does
not

operate
accu

rately

Fuel
meter

Fuel

meter
does

not

operate
Defective
thermometer

Defective
thermal
transmitter

Improper
cable
contact

Defective
tank
unit

Defective
fuel
meter

The

pointer
indi
Defective
tank
unit

cates
Full

po

sition

Fuel
meter

fune

tions

improperly
Defective
fuel
rneter

Defective
tank
unit

Defective
fuel
rneter
BODY

The
thermometer
is
serviceable

when
a
100
n
resistance
is

ap

plied
to
the

thermal
transmitter

yellow
white

cable
the
cable
is

grounded
and
the
thermorneter

indicates

approximately
500C

1220F

When
the
thermometer
is
normal

through
the
above

inspection

The
thermometer

indicates

a

temperature
slightly
lower
than

the
actual

temperature

The

poin
ter

tank
unit

grounded
deflects

yellow
when
the

cable
is

The

pointer
does
not

deflect

through
the
above

inspection

The

pointer
lowers
below
the

ernpty
limit
when
the

ignition

switch
is

turned
off

The

pointer
still

indicates
Full

position
through
the

above
in

spection

The

pointer
indicates
a
half
level

when
a
35
n
resistance
is

applied

to
the
tank
unit

yellow
cable
and

the
cable
is

grounded

The

pointer
does

not
indicate
a

half
level

through
the
above
in

spection

BE
24
Replace
if
defective

Replace
the

therrnal

transmitter

Check
the
cable
from

the
thermometer
to

the
thermal
trans

mitter
for
cable

being

about

to
break

poor

contact
and

faulty

grounding
and

repair

as

required

Replace

unit
the
tank

Replace
the
fuel
me

tee
with
a
new
one

Replace
the
tank

unit

Replace
the
fuel
me

ter

Replace
if
defective

Replace
the
fuel

meter

BODY
ELECTRICAL

Improper
cable
contact

Oil

pressure
and

ignition
warning
lamps

Condition

Oil

pressure
Want

ing
lamp

The

lamp
does
not

ligh
t
when
the

ignition
switch
is

set

to
ON
Probable

cause

Blown
off

fuse
or

faulty
contact

Broken

lamp
bulb
fIlarnent
or

faulty
cable
contact

Defective
oil

pressure
switch

The

lamp
does
not
Oil

pressure
is

too
low

go
out
while
the

engine
is

being

operated
Lack
of

engine
oil

Defective
oil

pressure
switch

Ignition
warning

lamp

The

lamp
does

not

light
when

the

ignition

switch
is
set
to

ON
Blown
off
fuse
or

faulty
contact

Burnt
out

light
bulb
filarnent
or

faulty
cable
contact
The
fuel
rneter
indicates
a

level

slightly
lower
than

the
actual

level

Method
of

inspection

Check
the

fuse
for

fusing
and

faulty
contact

The

warning
lamp
does
not

light

when
oil

pressure
switch

yellow

black
cable
is

grounded

The

warning
lamp
lights
through

the

above

inspection

Inspect
the

engine
oil

pressure

system

Check
oil
level

Continuity
exists
on
the
oil

pres

sure
switch
when
the

engine
is

being
operated

Check
the
fuse
for

fusing
and

faulty
contact

The

pilot

lamp
does
not

light

when
the

voltage
regulator
con

nector
is
disconnected
the

white
red
cable
is

grounded
and

the

ignition
switch
is
set
to
ON

BE
25
Check
the
cable

from

the

fuel
meter
to
the

tank
unit
for

cable

being
about
to
break

poor
contact
and

faulty
grounding
and

repair
as
required

Corrective

action

Replace
after
corree

ting
the

fuse
the

cause
if
fused

Check
the

light
bulb

for
burnt
out
fIla

ment
and

replace
as

required

Replace
the
oil

pres

sure
switch

Add
oil

Replace
the
oil

pres

sure
switch

Repair
or

replace
as

required

Check
the
bulb
for

burnt
out
fIlament

and

replace
as
re

quired

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

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

Flashed

range
of

washing

solve
lt
Ca
ution
in

use
of

washer

r
500
mm

19
7
n

E

I
fTh

e

i

E
I

I
N

j
1
N

I
1

r
j

I

I
e

f
1
Never

operate
the

washer

continuously
for
more
than

30
seconds
or
without
the

washing
liquid
This
often

causes
the
washer
s

improper
operation
Normally
the

washer
should
be

operated
for

less
than
10

seconds
at

time

Fig
BE
48

Adjusting
washer
nozzle

TROUBLE

DIAGNOSES
AND

CORRECTIONS

Condition

Probable
cause
Corrective

action

Wiper
system
does
not

oper

ate
Open
or
short
circuit

of
feed
har

ness
Repair
harness

Blown
ofT

fuse
or

improper
fuse

contact
Replace
or

correct
fuse

position

Improper
connector
contact

Correct
contact

Defective
control

switch

Replace
control

switch

Defective

motor

Replace
motor

Slow

rotation
of

wiper
motor

Rotating
part
is
out

of
lubricant

Lubricate

rotating
part

Defective
motor

Replace
rnotor

Wiper
speed
does
not

change
Defective

switch
or

improper
switch

contact
Replace
or

repair
switch

Wiper
does
not

stop

Improper
switch
contact

Replace
or

repair
switch

Irnproperly
grounded
switch

Repair

Improper
adjustment
of

aut
stop

point
Replace
motor

Noisy
wiper
motor

Defective
motor

Replace
motor

8E

2B

BODY
ELECTRICAL

Improper
stop
position
of

wiper
arm
Improperly
positioned
blade
and

arm
Correct

position

Damaged
or
worn
auto

stop
point
Replace
motor

Improper
wiping
Worn

rubber
blade
Replace
blade

Inadequate
pressing
force
of

wiper

arm
Replace
wiper
arm

IGNITION
SWITCH
AND
STEERING
LOCK

CONTENTS

IGNITION
SWITCH

Removal

IGNITION
SWITCH
WITH

STEER
ING
LOCK
BE
29

BE
29

BE
29

IGNITION
SWITCH

This
3
or
4

position
switch
is
installed
on
the

ignition

switch
bracket

which
is
installed
on
the
instrument

panel

with
two
screws
and
controls
the

engine
ignition
system

and
most
of
electrical

equipment

Removal

Remove
the

ignition
switch
connector
loosen
the

ring

nut
remove
the

ignition
switch

from
the
bracket
Description

Steering
lock

replacement

Warning
switch
and

warning
buzzer
BE
29

BE
30

BE
30

Fig
BE
49

Removing
ignition
switch

IGNITION
SWITCH
WITH

STEERING
LOCK

Description

The

steering
lock
is
built
in
the

ignition
switch
When

the

key
is

set
to
Lock

position
and
rernoved
the

steering
system
is
locked

automatically
The

locking

8E
29