1973 DATSUN B110 timing belt

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

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

Air
intake

system
in

trouble

Overheating

Overcooling

Others

NOISY

ENGINE

Car

knocking

Car
knock
when

coasting
ENGINE

Diny
ur

clogged
fuel
strainer

Fuel

pump
will
not
work

properly

Clogged
carburetor

jets

Clogged
air
cleaner

Air

inhaling
from
manifold

gasket
or
carbu

retor

gasket

Insufficient
coolant

Loosened
fan
belt

Worn
or
defective
fan
belt

Defective
thermostat

Defective
water

pump

Clogged
or

leaky
radiator

Defective
radiator
filler

cap

Air

mixing
into

cooling
system

Improper
grade

engine
oil

Incorrect

ignition
timing

Defective
carburetor

lean
mixture

Defective
thermostat

Low

octane
fuel

Improper
tire

pressure

Dragging
brake

Slipping
clutch

Overloading
to

engine

Carbon

knocking

Timing
knocking

Fuel

knocking

Preignition
misusing
of

spark
plug

Incorrect
throttle

opener
adjustment

Trouble
in
PCV
valve

ET
30
Replace

Repair
or

replace

Disassemble
and
clean

Replace
element

Replace
gasket

Replenish

Adjust

Replace

Replace

Replace

Flush

repair
or

replace

Replace

Retighten
each

part
of

cooling
system

Replace
with

proper
grade
oil

Adjust

Overhaul
carburetor

Replace

Replace
with

specified
octane
fuel

Adjust
to

the
specified

pressure

Adjust

Adjust

Use

right

gear
in

driving

Disassemble
cylinder
head
and
remove

carbon

Adjust
ignition
timing

Use

specified
octane
fuel

Use

specified
spark
plug

Adjust
throttle

opener

Replace
PCV
valve

ENGINE

27
Install
the
oil

pump
with
oil
filter

28
Install
the

alternator
fan
and

fan
belt

29
Install
the

fuel

pump

30

Install
the
distributor

assembly

Fig
EM
B7

Timing
maTk

Fig
EM
SS
Distributor
installation

EM
32
Notes
3
Set
the

No
1

piston
to
its

top
dead
center
of

the

compression
stroke

b
Before
installation
return

the
distributor
rotor

approximately
60

degrees
from

its

regular
posi

tion
Insert
the

assembly

meshing
the
distributor

drive

gear
and
driven

gear

After

installation
the
distributor
rotor
should

come

into
contact

with
the
mark
on
the
rotor

cap

fitting
as

shown
in
the

Figure

31

Install
the

spark
plugs
and

connect
the

distributor

to

plug
high
tension

lead
wire

32
Install
the
fuel
hoses

and
tubes

33
Install
the
clutch

cover

assembly

34
Install
the

engine
stingers
and

crankcase
ventilation

hose

35
Dismount

the

engine
from
the

working
stand

Install
the

engine
mountings