1973 DATSUN B110 Service Repair Manual

BODY

b

Method
2

Start
the

engine
and
turn
on
the
window

defogger
system
With
a
d
c

voltmeter

setup
shown
in

Figure
BF

70
check
each
heat
wire

for

discontinuity

If

the
meter
indicates
12
volts

or
0
on

a

specific
wire

that

line
is
broken
Normal
indication

6
volts

A

break
in
that
line
can
then

be
detected

by
moving

the

positive
lead

of
meter

along
the

line
until

an

abrupt

variation
in

the
meter
indication
is

encountered

Fig
BF
70

Checking
for
broken
heat
wire

with
d
c
voltmeter

c

Method
3

With
an
ohmmeter

setup
shown
in

Figure

BF
7l
locate
one

lead
on
each
end
of
a
heat
wire
and

the

other
in
the
rniddle
section

of
that
wire
If

the

meter

registers
on

a
specific

grid
line
a

value
twice
as

much
on

any
other
line
that

line
is
broken

A

break
in
that

line
can
then
be

located

by
an

abrupt

variation
in
the

meter
indication
as
the
test

lead
moves

along
the
broken
heat
wire

r

I

I

I

J

I

I
v

Ejl

Fig
BF
71

Checking
for
broken

heat
wire
with

ohmmeter
2

Repair

a

Repair
equipment

1
Conductive
silver

composition
Dupont
No
4817

2
Ruler
30

em

11
81

in

long

3

Drawing

pen

4
Heat

gun

5

Alcohol

6
Cloth

b

Repair
procedure

1

Wipe
clean
broken
heat
wire
and
its

surrounding

area

with
a
cloth

dampened
in

alcohol

2

Apply
a

small
amount
of

conductive
silver

composi

tion

to
the

tip
of

drawing

pen

Note
Shake
silver

composition
container

sufficiently

before
use

3

Place
ruler
on

glass
along
broken
line

to
be

repaired

as

shown
in

Figure
BF

72

Deposite
conductive

silver

composition
to
break
line
with

drawing

pen

Slightly
overlap
existing
heat
wire

either
side
5
mm

0
1969
in

preferable
of
the

break

Heat
wire
0
en

0
0

d
ci

1
I
Break

I
1

I

kr

I
I

Ruler

Drawing

pen

Unit
mm

in

Fig
BF
72

Locating
ruler
in

position

8F

35

Drawing

pen

ri
Rear
window

L

Ii
r

Heat
wire

2
Silver

Imposition

3
Ruler

Fig
BF
73

Depositi
rg
silver

composition
in

place
BODY

4

Wipe
clean
silver

umposition
trom

tip
of

drawing

pen

5

After

repair
has
been

completed
check

repaired

wire

for

continuity
This
check
shuuld
be
conducted

10
minutes
after
silver

composition
is

deposited

Break

points

L

Heat
wire

orrect
r

Overlapped
area
Incorrect

Fig
BF
74
Incorrect
and
correct

deposition
of

silver

composition

Note
Do
not
touch

repaired
area
while
test
is

being

conducted

6

Apply
a
constant
stream
of
hot
air

directly
to
the

repaired
area

for

approximately
20
minutes
with
a

heat

gun
A
minimum

distance
of
1

cm
l
18
in

should
be

kept
between
the

repaired
area
and
outlet

of
hot
air
If
a
heat

gun
is
not
available
leave
the

repaired
area
unattended
for
24
hours

3

Instruction
after

repair

Wipe
clean
the

repaired
area

with
a

soft
clean
cloth

Note
Do
not

use
a

cleaning
solvent

containing
much

soap
water
WATERLEAK

CORRECTION

In

many
instances
minor
waterleaks
around
the

windshield

may
be
corrected

by
performing
the

following

operations

Leak
between

rubber
channel

and

glass

Using
a

pressure
applicator
corking
gun
with
a
narrow

tip
apply
an

approved
weatherstrip
adhesive
black

between

glass
and
rubber
channel
on
the
outside
of
the

glass
completely
around

perimeter
of

glass

Leak
between
rubber
channel
and

body

Use
a

pressure
applicator
with
a

narrow

tip
Working

from
outside
of

body
apply
a

sealer
under
outer

lip
of

rubber
channel
around
entire

perimeter
of

body
opening

SF
36

BODY

VENTILATOR

CONTENTS

DESCRIPTION

BF
37

DESCRIPTION

In
this

body
ventilation

system
air
is
taken

from
the

air

intake
on
the

cowl

top
and
ventilator
on
the
front

door
and
exhausted
from
the

slip
shape
air
outlets
on
the

4
1

4
door
sedan

I

Coupe
COWL
TOP
GRILLE

BF
38

rear

pillar
body
side

for

coupe
and
side
window
Thus

the

passenger
compartment
is

ventilated

sufficiently

L

2
door
sedan

I
I

1

Station

wagon
or

Van

Fig
BF
75
Ventilation

system

BF
37

@
c

@

CD

w

1

Heater
motor

2

Fan

3
Heater

core

4

Shut
valve
5

Room

valve

6

Ventilator
valve

7

Defroster
nozzle

8
Cowl

top

Fig
BF
76

Cross
sectional
view

of
forced
ventilation
BODY

COWL
TOP

GRILLE

Loosen

six
self

tapping
screws
and

remove
the

cowl

top
grille
from
the
cowl

top

panel
together
with
the

baffle

plate

The
cowl

top
grille
is
made
of

ABS
resin
When

installing

tighten
inside

self

tapping
screws
two

screws

first
and

lighten
four
outside

self

tapping
screws

so
that

no
unreasonable
force
is

applied
to
the

cowl

top
grille

Moreover
be

careful

not
to
allow

brake
fluid
or
oil

sticking
to
it

Fig
BF
77

Cowl

top

grille
removal

SEAT

CONTENTS

SEAT

Description

Removal

Reinstallation

SEAT
SWI
TCH
BF

38

BF
38

BF
39

BF
40

BF
40

CAUTION

I
n

conformity
with
MVSS

No
302
be

sure
to
remove

the
thin

polyethylene
covers
from
seat
cushions
seat

backs
seat
belts
and
head
restraints
at

a
Pi
Helivery
service

b
Parts

replacements
Inspection

Installation

HEAD
REST

OPTIONI

SEAT
BELT
BF
40

BF
40

BF
41

BF
41

SEAT

Description

For

the
BHO
series

two

types
of
front

seat
are

available

one
is
a

separate
bucket
seat
and
the
other
is

a

separate
manual

reclining
seat

option

The

manual

reclining
seat
is

operated
by
a
control

lever

located
in
the

window
side
of

the
seat

cushion
When
the

control

lever
is

pulled

upward
the
seat

back
can
be

reclined
to

any
desired

position
up
to

approximately
520

from
the
normal

position

BF

38

Fig
BF
78

Front
seat

Removal

Slide
rail
of

front
seat

I

Slide
the

lower
rail
toward
rear
side
of
the
seat
and

remove
the
seat
frame

connecting
bolts

2
Remove
return

spring

3

Slide
the
lower
rail

forward
and
remove
the

fIxing

bolts

from
the
rear

side

Rear
seat
sedan

1
Remove

two
screws
from
both
sides
of
the

seat

cushion

2

Raising
front
side
of
the

seat
cushion

pull
it
out

3
Remove
the

seat
back

attaching
screws

Fig
BF
79

Removing
seat
cushion

fixing
screws
BODY

Fig
BF
80

Removing
seat

back
installation
screws

4
Unhook
the

seat
back

at
the
rear

bulk
head

upper

portion

Rear

seat

coupe

Raising
rear
side
of
the
seat

cushion

pull
out
the

cushion

stopper
and

remove
the
seat
cushion

Fig
BF
81

Removing
Tear
seat

cushion

2
Loosen
installation
screws
and
remove
the

seat

back

Rear
seat
Van

I

Turn
down
the

seat
cushion
forward
remove
four

screws
and
remove
the

seat
cushion

as
shown
in

Figure

BF
82

8F
39

Fig
BF
82

Removing
rear
seat

cushion

2

With
the

seat
back
turned
down

remove
two

screws

from
the
wheel
house
and

remove
the

seat
back

111
I

V

RH

0
1

lr

Fig
BF
83

Removing
rear
seat
back

Reinstallation

Reinstall
the

seat
cushions
and
seat
backs
in
reverse

sequence
of
removal

SEAT
SWITCH

Inspection

Seat
switch

should

operate
accurately
Prior
to

inspecting
seat
switch
disconnect
harness

I
Place
standard

weight
on
the

illustrated

position
of

assistant

seat

Note
Put

weight
on
shadowed

area
See

Figure
BF
84
BODY

Fig
BF
84

Weight
position
Unit
mm

in

L
130
15
118
for
SEDAN

140
5
512

for
COUPE

2

Using
test

light
check
whether

light

grows
when

II

kg
24
25
lb

weight
is

on
and

light

goes
out
when

1
0

kg

3
2
J
lb

is

on

Installation

I

Seat
switch

should
be
installed

right
position
See

Figure
BF
85

2
Install

seating
switch
to

5th
5

crest
of

spring
at
rear

of
4th

spring
as
viewed

from
inner

side
Then
set

it

between

cushion

pad
and
cushion

spring
and

clip
to

cushion

spring
by
hook
of
switch
case

3

Install
lead
wire

fastner
to
cross
bar
hole
of
4
mm

0
157
in

securely

DETAIL
B
@

ui
DETAIL
A

n

@

ID

E

l

1
Lead
wire
fastener

2
Cross
bar

3
Seat
switch

4
Cushion

spring

5
Cushion

pad

Fig
BF
85
Seat
switch
location

BF
40

j

L

CD

1
II
r
1

P

r
4vc
V

4

I

o

@

@

c

ID

I
HEAD

REST
OPTION

When

installing
head
rest
on
front

seat
remove
the

plug
on
the
seat

back
and
insert
the
head
rest

supports

into
the
holes

Fig
BF
86
Head
rest
BODY

SEAT
BELT

The
two
front
seat
belts

are
of
a
three

point
type

consisting
of

lap
and

shoulder
belts
The
two

rear
seat

belts
are
of

a
tow

point
type
The

lap
belts
of
all
seats
are

provided
with
automatic

locking
retractor
In
the

front

automatic

locking
retaractor
a
belt

switch
retractor

switch
micro
switch
for
the

seat
belt

warning
system
is

built
in

Notes
a
DO
NOT

attempt
repairs
on

lap
belt
retractor

mechanisms

Replace
defective

part
with
NEW

service

replacement

parts

b
DO
NOT

replace
one
belt
of

lap
belt
or

shou
Ider
belt
set

r

l

Scating
switch

for

assistant

seat

2
Seat
belt
switch

3
Automatic

locking
retractor

4
Inhibitor
switch
for

AfT

5
Neutral
switch
for
M
T

Fig
BF
87
Seat
belt

installing
positions

BF
41

BODY

INSTRUMENT
PANEL

CONTENTS

REMOVAL
BF
42

REMOVAL

Fig
BF
88

Removing
instrument

panel

Note
There
are
two

types
of
instrument

panel
square

type
and
round

type
However
both

of
them

are

removed
and

reinstalled
in
the
same
manner

Disconnect
the

battery
cable
at
the

battery
terminal

2
Disconnect
the

wiring
harness
connector
units

Disconnect
the
instrument
harness
from
the

engine

compartment
harness

Disconnect
the
instrument
harness

from
the
turn

signal

switch

Disconnect
the

instrument
harness

frorn
the
body

harness

Disconnect
the
instrumen
t
harness
connected
to

the

door
switch

stop
lamp
switch
flasher
unit

and

passing

light
relay
option
REINSTALLATION
BF
43

Note
When

disconnecting
the
wiring
harness

recom

mend
to
use

tags
for

identifying
their

relationship

3
Disconnect
cables
for
radio
antenna
and

speaker

4
Remove
the

package
tray
the
shell
cover
and
turn

signal
switch

Note
Work

may
be
carried
out
without

removing
die

steering
wheel
However
it
is
recommended
to

remove
the
steering
wheel
50
that
work
can
be

carried
out
more
easily

5
Disconnect
the

speedometer
cable

from
the

speedometer
unit

6
Disconnect
the
heater
control
cable
at
the
heater

side

Fig
BF
89

Removing
imtrument

panel
Ii

BF
42