1973 DATSUN B110 belt

BODY

GENERAL

DESCRIPTION

CONTENTS

DESCRIPTION
BF
1

DESCRIPTION

The

body
construction
is
of

an
unit

type
The

individual

body

components
which

require
high
strength

adopt
a

box
cross
section

improving
torsional
rigidity
and

the

highly
rigid
structural

components
are

joined
under

special
connecting
construction
which

reduces

centralizing

of
stress

Particularly
for

protection
of

passenger
from

side

collision
side
section

of
the

body
is

constructed
with
side

member

having
box
cross
section

improving
the

rigidity

and
the

front
and
rear

side
members
are
so
constructed

that

they
are

deformed
in
the
event
of
forward
or
BODY

CONSTRUCTION
AND

CROSS

SECTIONAL
VIEW
BF

1

rearward

collision

absorbing
an

energy
generated
from
the

collision

There
are
three

types
of

body
construction
sedan

coupe
and

station

wagon
or

van
however
the
front

section
is

used

commonly

BODY

CONSTRUCTION
AND

CROSS
SECTIONAL
VIEW

The

body
construction
cross

sectional
views
and

sealing

points
are
indicated

as
follows

Seat
belt
anchorage
indicating
one
side
only

Fig
BF
1

Body
construction
4

door
sedan

BF

1

BODY

t
I

j

1
ll

U0

L
5

f

llIr
7Jv4

i
L
rl

c
l

U
j

tr
l
yj

w
v1

r
J

V

1

1
k
I

J
7

z
cd

l
J
b

Y
lli
i

r
I

y

I

Seat
belt

anchorage
indicating
one
side

only

Fig
BF
2

Body
construction
2

doOT
Sedan

Fig
BF

3

Body
construction

Coupe

Fig
BF
4

Body
construction
4
door
Van

BF
2

BODY

Water
drain
holes
are
located
as

shown
in
the

following

figure
Be
sure
to

provide
all
water
drain
holes
with
grommets

Fig
BF
9
Location

of
water
drain

hole
Sedan

r

I

S

S
@

y
j

B

om

q1

11

t

Fig
BF
10
Location

of
water
drain
hole

Coupe

4

C

t7
P
Cc

0

I

Y

j

G

27

il

j
e

@
Z
c
c

l

@

7

iJJ

j

Fig
BF
J
J
Location

of
water
drain
hole
Van

BF
7
I

to
6
Rubber

plug

7

to
12
Seat

belt
anchorage
hole

plug

13

Inspection
hole

plug

14
Drain

plug

15
Drain
hole
cover

1
to
4
5

6
to
11

12
Rubber

plug

Seat
belt
anchorage
hole

plug

Drain
hole
cover

11
to
3

I
Rubber
plug

I
4

to
1
Seat
belt

anchorage
hole

plug

@
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

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

INSPECTION

Referring
to
the

wiring
diagram
check
the

wiring

harness

for
connection
with
electrical

equipment
and

connector
for
conned
ion
and
installation
When

checking

the

wiring
harness

note
the

following
matters

Connected
unit
should

not
be

loose
rusted
or

contaminated

2

Cable
insulator
cover
should
not
be

damaged
crack

ed
or

insulating
material

should
not
be
deteriorated

3
For
those

parts
which

are

grounded
through
the

installation

bolts
the
bolts
should
be
in
contact
with
the

body
completely
so
that

continuity
is

provided
in

between
the

body
and
bolts

4
Terminals

of
unit

through
which

current
flows

should
not
come

into
contact
with

other
metal

parts

5
No

erroneous
connection
should
be

present

DESCRIPTION

When
an
overcunent

exceeding
the
rated

amperage

flows
to
a
circuit
the

fuse
is
heated
and
melted
the

circuit
is

interrupted
and

thus
cables
and

electrical

equipment
are

protected
from

damaging
due
to

burning
or

damaging
is

limited
to
the

minimum
This
vehicle

is

equipped
with
six

fuses
and

one
fusible
link
The
fuses

are

located

in
the

fuse
box
and
used

to

protect
illumination

signal
and
other

systems
and
the
fusible
link
is

adopted

in
the
cable
between
the

battery
and
alternator
to

protect

the

charging
and

starting
circuits

FiJ
BE
16
Fuse
box
BODY

6
Cables
should
be

damped
so
that

they
do
not
come

into
contact
with

sharp
corner
or

part
lernperature
of

which

rises

highly

7
Cables
should
be

securely
clamped
in

posItions

sufficiently
separated
from

rotating
parts
such
as
fan

pulley
fan
belt

etc

8
Cables
should
be

provided
with
an

optimum
extra

length
at
sections

stationarity
on
the

body
or
at
sections

where
vibration

occurs
due
to

engine
operation
and

others

Note
a
When

inspecting
or

performing
other
mainte

nance

service
and
no

power
supply
is

required

particularly
or
when
it
is

anticipated
that
a

part

may
be
short
circuited
disconnect
the

battery
H

terminal

b
In
no
event
should
an
unloaded
circuit
be

directly
connected
with
ground
Be
sure
to
use
a

test

lamp
or
circuit

tester

fUSE

Fig
BE
17
Fusible
link

INSPECTION

In
the

most

cases
fuse
can
be

checked

visually

However
when

it
is
difficult
to

check

visually
a
circuit

tester

may
be
used

The
fusible
link
can

be

inspected

visually
or

by

feeling
on

finger

tip
However
the
fusible

link
can
be

inspected
more

correctly

by
using
a
circuit

tester

BE

6

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

ENGINE

operating
mechanism

Adjust
valve

clearance
at

following
four

points
while

engine
is
still

hot

G
Exhaust

valve
of
No
1

cylinder

CV
Intake
valve

of
No
1

cylinder

CID
Intake
valve

of
No
2

cylinder

CID
Exhaust
valve
of
No
3

cylinder

Note
Numbers
in

parenthesis
agree
with
those
in

ac

companying
sketch

I

Fig
BY

1

Adjusting
valve
clearance

4

Again
rotate

crankshaft
one
turn
so
that
No
4

piston

is
in

top
dead
ce
lter
on
its

compression
stroke

Adjust

follnwing
valves

@
Exhaust
valve
of
No
2

cylinder

@
Intake

valve
of
No
3

cylinder

f
Intake
valve

of
No
4

cylinder

@
Exhaust
valve

of
No
4

cylinder

Adjustment
should
be

made
while

engine
is
hot
After

all

valves
have

been

adjusted
correctly
tighten
lock
nut

firmly
to

secure
the

adjustment

Vah
e
clearance

Hot
Intake

0
35

mm
0
014
in

Exhaust
Checking
and

adjusting
drive

belt

II

I

Fig
ET
2

Adjusting
drive
belt

tension

I

Check
for
a

cracked
or

damaged
V

belt

Replace
if

defective

2

Adjust
the
belt
tension
if

necessary

Belt
deflection
when

thumb

pressure
of
10

kg
22
0
lb

is

applied
midway
between

pulleys
10
to
15
mm

0
394

to
0
590
in

Retightening
cylinder
head
bolts

manifold
nuts

and
carburetor

securing

nuts

Cylinder
head
bolts

When
the

engine
is
in

cold

tightening
should
be
made

in

several

steps
and
in

sequence
shown
in

Figure
EM
82

page
EM
31

starting
with
the
center

toward
the

ends

Tightening
torque

1st
turn

2nd
turn
4

0
to
4
5

kg
m
29
to
33

ft
lb

5
5

to
6
0

kg
m

40
to
43
ft
lb

Then
warm

up
the

engine
and

retighten
the
bolts
to
the

specification
of
hot
condition

Tightening
torque
hot

6
0

to
6
5

kg
m
43

to
47
ft
lb

Other

tightening
torque

Manifold
nuts
0
9
to
14

kg
m
6
5
to
10
ft
lb

Carburetor
nuts
0
5

to
LO

kg
m
3

6
to
7
2
ft
lb

Checking
engine
oil

Oil

capacity
of

engine
including
oil
filter

ET
2