weight DATSUN B110 1973 Service User Guide

ENGINE

Pig
EM
62

Bearing
clearance
check

Measuring
connecting
rod

bearing
clearance

Measure

connecting
rod

bearing
clearance
in
the

same

manner

Tightening

torque

3
2
to
3

8

kg
m
23

to
28
ft
Ib

Bearing
oil
clearance

Standard
Wear
limit

Main

bearing

clearance

rom
in
0
020

to
0
062

0

0008
to
0
0024
0
1

0
0039

Connecting
rod

bearing

clearance

mm
in
0
020

to
0
050

0
0008
to

0
0020
0
1

0
0039

2
If
clearance
exceeds
the

specified
value

replace

bearing
with
an

undersize

bearing
and

grind
out
the

crankshaft

journal
adequately
Fig
EM
63

Bearing
clearance
check

Fitting
crankshaft
bearings

I
Set

the
bushings
on
the
main

bearing
cap
and
the

cylinder
block

bearing
recess
and

tighten
the

cap
bolts
to

the

specified
torque

Tightening
torque

5
0
to
5
3

kg
m
36
to
38
ft
lb

2
Loosen
the

cap
bolt
on

one
side
and
measure

clearance
between

the

cap
and

cylinder
block
side

n
n

u

ii
Bearing

6
Weight

EM143

Fig
EM
64

Bearing
crush
check

EM
22

FUEl

SYSTEM

Idling
and
slow

system

Passing
through
the
main

jet
the
fuel

passage
is

separated
from
main

line
fuel
flows

through
the

slow

jet
primary
slow
air
bleed
is

ejected
from
the

by
pass

hole
and
idle

nozzle

Accelerating
mechanism

Cj

f

li

Ip

j

1

2

3

4
5
Inlet
valve

6
Outlet
valve

7
Primary
throttle
valve

8

Pump
connecting
rod
Pump
lever

Pump
nozzle

Piston

Piston
return

spring

Fig
EF
17

Accelerating
mechanism

A

mechanical
accelerating

pump
synchronized
with
the

throttle
valve
is
used

When
the
throttle
valve

is
closed
the

piston
rod
is

pushed
up
with
the

linkage
which

pushes
up
the

piston

through
the

piston
return

spring

When
the

piston
comes
down

the
inlet
valve
closes
the

outlet
valve

opens
and
the

fuel
within
the

pump
is

blown
out
from

the

pump
jet
by
the

compressed
piston

return

spring
The

fuel
hits

against
the
side
wall
of
the

small
venturi

becoming
minute

drops
and

compen

sating
trancient

sparseness
of
the

fuel

Power
valve
mechanism

The

power
valve
mechanism
so

called
vacuum
actuated

boost

type
makes
use
of
the
downward

pulling
force

of
the

air
stream
below
the

throttle
valve

When

the
throttle
valve
is

slightly
opened
during
light

load

running
a

high
vacuum
is
created

This
vacuum

pulls
the
vacuum

piston
upward
against

the

spring
leaving
the

power
valve
closed

When
the

vacuum
is

lowered

during
full

load
or

accelerating
running
the

spring
pushes
the
vacuum

piston
downward

opening
the

power
valve
to
furnish

fuel

EF
11
Secondary
system

Secondary
main

system

When
the

primary
throttle
valve
is
wide

open
and
the

engine
produces
high
power
the

secondary
throttle

valve

begins
to

open
by
the

linkage

However
the

auxiliary
Y
J

lve
does

not

open
at
a
slow

speed
due
to
the

counterweight
connected
to
the
valve

shaft

As
the

engine
picks
up

speeds
the

auxiliary
valve

opens

against
the

load
of
the

counterweight
and
the
second

ary
system
starts

operation
for

high
power
operation

The
fuel

flowing
out
of
the

passage
at
the
bottom
of

the
float

chamber

passes
through
the

secondary
main

jet
The
fuel
is
mixed

with
the
air

coming
from
the

main
air

bleed
and
the
mixture
is
blown
into
the

venturi

through
the
main
nozzle

When
the

primary
throttle
valve
is
in
the
full

open

position
the

secondary
throttle
valve
is
also

fully

opened

t

2

3

4
5

Auxiliary
valve

6
Secondary
throttle
valve

7

Primary
throttle
valve

8

Primary
main

jet
Counter
lever

Primary
main
nozzle

Primary
main
air
bleed

Counterweight

Fig
EF
1B
At

full
open
slow

speed

j

1

2

3

4

5

6
Counter

weight
7

Secondary
main
air
bleed
8

Secondary
main
nozzle
9

Counter
lever
10

Primary
main
nozzle
11

Primary
main
air

bleed
Secondary
main
jet

Auxiliary
valve

Secondary
throttle
valve

Primary
throttle
valve

Primary
main

jet

Fig
EF
19
At

full
open
high
speed

FUEl

SYSTEM

MA
JOR
SERVICE
OPERATIONS

A

completely
adjusted
and
serviced
carburetor
will

provide
the

engine
with

proper
mixture

at
all

speeds

Periodical

overhauling
which
cleans

all

components
and

passages
will

recover
the

originally
designed
performance

producing
the

engine
with

proper
gasoline
and
air
ratio
at

all

speeds
Passages
and
holes
of
the
carburetor
must
be

cleaned

carefully
Use

only
carburetor
solvent
and
com

pressed
air

to
clean
aU

passages
and

discharge
holes
Never

use
wire
or
other

pointed
tool
otherwise

accurately

calibrated
carburetor

will
be

affected

Removal

Remove
the

air
cleaner

2

Disconnect
the
fuel
line
vacuum
line
automatic

choke
harness
and
anti
dieseling
solenoid
harness
from

carburetor

3

Remove
the
throttle
lever

4
Remove
four

nuts
and

washers

retaining
the

carbuTe

tor
to
the

manifold
if

necessary

5
Lift
the
carburetor
and
remove
from
the

manifold

6
Remove
and
discard
the

gasket
used

between
the

carburetor
and
manifold

Disassembly

The
main

jets
and
needle
valves
on
both

primary
and

secondary
sides
are

accessible
from
outside
of
the

carbure

tor
for

disassembly

2
Remove

throttle
return

spring

3
Remove

pump
lever
shaft
take

out

pump
lever

and

pump

connecting
rod

4
Remove

rubber

pipe
from
choke

piston

5

Loosen
off
bolts

securing
servo

diaphragm
in

posi

tion
take
out

diaphragm

6

Back
off
total
of
five
bolts
which
hold
choke
in

position
and
remove
rods
of
starter

system
take
out

choke
chamber

In

removing
chamber
exercise
care
to
avoid

damaging

float

EF
19
ilia

Fig
EF
32

Removing
choke
dwmherand

seroo

diaphragm

7
The

primary
and

secondary
emulsion

tubes
can

be

disassembled

by
removing
the

main
air
bleeds
on
the

individual
sides

In

removing
injector
weight
piston
return

spring
and

ball
care
should
be
excercised
to

prevent
them
from

being

scattered
and
lost

OQ

fI

Fig
EF
33

Removing
emulsion
tubes

8
To

check
the

accelerator

pump
the

pump
cover
is

removed
Be
careful
not

to
lose
the

return

spring
and
inlet

valve
ball

provided
at
the
lower

part
of
the

piston

during

disassemb

ly

Removal
of

bi
metal
cover
is
a

simple
matter
of

removing
three
set
screws

When
it

becomes

necessary
to
take

out
float

pull
shaft

from
float

Note
Under
no

circumstances
should
bi
metal
be
moved

with
excessive
force
since
this

may
cause
a

perma

nent
set
in
bi
metal

making
starting
difficult

ENGINE

Choke

unloader
clearance

carburetor

body
C

between
choke
valve
and

mm
in

Bi
metal
resistance

ohms
2
01

0
07911

8

6t09
0

Accelerator

pump

Injector
hole

Return

spring

Fuel

pressure
mm
in

g
mm

Ib
in

kg
cm
2

psi

kg
lb
0
5

0
0197

78
I
I

0
18
2
6

Manual
transmission

Automatic
transmission
Weight
2
8
6
2

2
9
6
39

Example
1
215

represents
215
100
2
15

mm
0
0846
in

diameter

TROUBLE
DIAGNOSES

AND
CORRECTIONS
There
are
various
causes
of

engine
tarubles
It

some

times

happens
that
the

completely
effective

carburetor

seems

apparently
to
have

some
troubles

when
electric

system
is

defective
Therefore
whenever
the

enigne
has

troubles
electric

system
must
be

checked
first
before

adjusting
the

carburetor
In
the

following
table
the

symptoms
and

causes
of

carburetor
tarubles
and
remedies

for
them

are
listed

to

facilitate

quick

repairs

Troubles

Possible
causes
Remedies

Overflow
Dirt

accumulated
on

needle
valve
Clean
needle
valve

Fuel

pump
pressure
too

high
Repair

pump

Needle
valve
seat

improper
Lap
or

replace

Excessive

fuel

consumption
Fuel
overflows
See
above

Each
main
air

bleed

clogged
Clean

Gauge
plate

adjustment
incorrect

Correct

adjustment

Choke
valve
does

not

open

Adjust

Outlet
valve
seat

of
accelerator

pump
im

proper
Lap
or

replace

Linked

opening
of

secondary
throttle
valve

too

early
Adjust

Power

shortage
Each
main

jet
clogged
Clean

Each
throttle
valve

does
not

fully
open
Adjust

Fuel

pump
operated
improperly
Repair

EF
22

ENGINE

ElECTRICAL

SYSTEM

SPECIFICATIONS
AND
SERVICE

DATA

Specifications

Manual

Automatic

Transmission

Transmission

Make
and

type
HITACHI

SI14
87M
HITACHI
S114
156

Nominal

output
KW

1
0

1
0

System

voltage
V

12
12

Weight
kg
Qb
4

6
10
1
54
11

9

No

load

Terminal

voltage
V

12
12

Current
A

less
than
60
less

than
60

Revolution

rpm
more
than
7

000
more
than
6

000

Load

Terminal

voltage
V
6
3

6
3

Current
A

less
than
420
less

than
420

Torque
kg
m
ft

Ib

more
than
0

9
6
5

more
than
1
0

7
2

Shifting
type
of

pinion
gear

Magnetic
shift

Magnetic
shift

Number
of
teeth
on

pinion

gear
9

9

Service
data

S114

87M

S114
156

Brush

length

Standard

height
mm
in

16

0
630
14

0
551

Wear
limit

mm
in

6
5
0

256
4
5
0

177

Brush

spring
tension

Standard

pressure
kg
Qb
1
6

3
5

0
8
1
8

Commutator

Outer
diameter

Standard
OD

mm
in

33
1

299
33

I
299

Wear

limit
mm
in

2
0

079
2

0
079

Difference
between
maximum

and

minimum

diameters

Repair
limit
mm
in

0
4

0
0157
0
4
0

0157

Repair
accuracy
mm
in

0
05
0
0020

0
05
0

0020

Depth
of
mica

Repair
limit
mm
in

0
2

0

0079
0
2
0

0079

Repair
accuracy
mm
in

0
5

to
0
8
0

5
to
0
8

0

0197

to
0
0315
0
0197
to
0
0315

Clearance

between
arma
ture
shaft
and

bushing

mm
in

Repair
limit

0

2
0

0079
0
2

0
0079

Vi

Repair

accuracy
mm
in

0
03
to
0
1
0
03
to
0
1
1

r

0

0012
to
0
0039

0
0012
to
0
003Q

EE

11

ENGINE

r

Ignition
switJ

c
o

iArm
ture

j

i
i
VC2
P

tP2
d

I
I

I

PI

I

ll
Rl

L

I
I

lRJ
t

R
I

Field

e
I

I

I
I

Ps
I

1
I
I

n
I

coil

M
4

i

f
I

L
1
J

Alternator

Voltage
regulator

Fig
EE
2B

ChaTging
ciTcuit
II

ALTERNATOR

CONTENTS

DESCRIPTION

REMOVAL

DISASSEMBL
Y

INSPECTION
AND
REPAIR

Rotor

inspection

Inspection
of

stator

I

nspection
of
diode
EE
16

EE
17

EE
17

EE
19

EE

19

EE
19

EE
20

DESCRIPTION

In
the
alternator

a

magnetic
field
is

produced
by
the

rotor

which
consists

of
alternator
shaft
field
coil

pole

pieces
and

slip
rings
The

slip
rings
pressed
in
the

shaft

conduct
only
a
small
field
current

Output
current
is

generated
in
the
armature

coils
located
in
the
stator

The

stator
has
three

windings
and

generates
three

phase

alternating
currenl

Silicon
diudes
act
like
a

one

way
valve

for

electricity
so
that

charging
currcnt

passes
easily
but

reverse

current
is

shut
out
In

this
alternator
six
diodes
0

E
0

c

co

0

E
c

o

0

c

Cl
Battery

T

e

I

nspection
of
brush

Spring
pressure
test

REASSEMBL
Y

ALTERNATOR
TEST

SPECIFICATIONS
AND
SERVICE
DATA

Specifications

Service
data
EE
20

EE
21

EE
21

EE
21

EE
22

EE
22

EE
22

are
used

three

negatives
and
three

positives
Positive

plate
has
three

positive
diodes
and

negative
plate
has
three

negative
diodes
and

are
installed
in

positive
and

negative

plates
as
an

assembly

Pack

type
silicone
diodes
are
used
in
this

alternator

These
diodes

are

direct
soldered
at
their

tips
and

con

structed
with

positive
and

negative

conjunction
They
are

mounted
on

the
two

plates
which
combine
the

function

of
heat

dissipating
plate
and

positive
negative
terminals

and
are

light
in

weight
and

easy
to

service

EE

16

ENGINE

I
Grease

I

I
I

n

r
Y

J

Fig
EE
5B
StructuTe
D4l
l
BO

jj

l1

@
f
1

j

0

i

@r
liiU

ID

r

@l

IlIlJ
e

D

r
J

@
i

i
nL

ft

L

6

Fig
BE

59

Exploded
view

of
distTibutoT
D4Il
BO

EE
30
1
Center
carbon

2
Rotor
bead

3
Breaker

plate

4
Condenser

5

Fixing
plate

6
Housing

7
Side

plug

8

Cap

9
Carn

10
Governor
weight

tl
Shaft

12
Pinion

t

2

3

4

5

6

1

8

9

to

tl

12

13

14

t5

t6

11

18

t9

20

21

22
Assem

bly
clamp
cap

Assembly
clamp
cap

Assembly
shaft

Pinion

Assembly
earn

Assembly
weight
governor

Spring
gO
1emor

Screw

A
sembty
rotor
head

Washer
thrust

Assembly
breaker

plate

Set
contact

Assembly
terminal

Assembly
control
vacuum

Screw

Assembly
condenser

Screw

Assembly
cap
distributor

Assembly
point
carbon

Plate

ftxing

Bolt

HOllSing

ENGINE

When

nothing
is

wrong
with
its

characteristics
con

ceivable

causes
are
defectiveness
or
abnormal

wearing
of

driving

part
or
others
Do

not
disassemble
it

When
characteristics
are

improper
check
earn
as

sembly
governor
weight
shaft
and

governor
spring
and

other
relative

parts
carefully

When

reassembling
the

centrifugal
advance
mechanical

part
be

sure
to
check

advance
characteristics

by
the
use

of
a
distributor
tester

Centrifugal
advance
characteristics

1

c

1

Ei
12

L

o

V

o

u

c

o

o

t

D

c

s

151

14

e

101

0

81
V

0

u

c

51
0

41
t

0

Q
2

01

0
I

I
I
1

rj

11

50

I

J
2
100

50
oQ
5

00

400

800
1
200

1
600
2

00

Distributor
RPM

Fig
EE
62
D412

80formanual
transmission

I
I
I

2
350
13
50

1

1

1
300

1

1

550
00

h
6
0
0

I

400

800
1

200
1
600
2

000

Distributor
RPM

Fig
EE

63
D412
B9

faT
automata

transmission
2
400

I

11
50

2
400

EE

32
Vacuum
advance
mechanical

part

Vacuum
ad
ance
characteristic

12

I

I

I

I
I

II1
5515
5Q

i

01
40

00

i1j
50
00

1

I

o
50
100
150
200
250
300
350
400
450

500
550

21
41
6
8

101
C121
141
161
181

201
22

V2Icuum

mmHg
inHg
I
I
I

I

7

50
1
1Q

Ii

V
I

o
0

u

i
e
6

tI
2

o

i5

0
235

Fig
EE
64
D412
80

for
manual
transmission

c

1

0

I
o

9i
8

o

u

0

i

61
0

0

0
4

o

Q

2

I
I
I

450
x
70

L
H

1
500

501

287
00

l
320
oJ

I

I

200250300350400450500550

IS
101
1121
t4

16
16
1201
22

Vacuum

mmHg

OnHg
o

50
100
150

2
141
161

Fig
EE
65
0412
89

for
automatic
transmission

The

following
causes
are
considered
for

impropeI

opera
tion

I

Leakage
of
air
due
to

incomplete
fastening
of

vacuum
inlet

ENGINE

6
Drive

out
the
knock

pin
and
disconnect
the

pinion
to

remove
the

whole

rotary
unit

Fig
EE

70
Removal

of
knock

pin

7

Remove
the
whole

rotary
unit

When

disconnecting
the

governor
spring
from
the

governor
weight
be
careful
not
to
stretch
or

deform
the

governor
spring
tJ

0

Fig
EE
71
Removal

of
Totation

pari

Reassembly

Reassemble
the

distributor
in
reverse

sequence
of

disassembly
When

assembling
be
sure
to
coat

grease
to

portion
as
shown
in

Figure
EE
58

For
the

governor
spring
and
earn

installing

positions

refer
to

Figure
EE
72

1

I
Rotor

positioning
tip

2

Governor

spring
A

13
I
Weight
pin

4

Governor

weight

15

I
earn

Fig
EE
72

Installation

of
governor

spring
and
cam

Set
the

governor

spring
A

to
the

rotor
head

po

sitioning
tip
side
In
this

case
the

weight
pin
for
the

governor

spring
A
is

applied
into

the

long
groove
and
a

clearance
is

remained
at

beginning
and

ending
of

advancing
On

the
other
hand
the

weight

pin
in

the

opposite
side

enters
the
short

groove
and
no
clearance
is

remained

at
both

beginning
and

ending
of

advancing
Upon
completion
of
the

assembly
measure

advancing

characteristics

to
ensure
the

performance
before

installing

the
distributor

on
the

engine

EE

34

ENGINE

Weight

pivot
diameter

mm
in

Weight
hole
diameter

mm
in

Clearance
between

pivot
and
hole

mmOn
5
0

028

0
9
9
1

0011

1
005
1

6

1
0002

5
1
018

0

1969
0

0007

o
0

0
005
to

0
046
0
0002

to
0

0018

IGNITION
COIL

CONTENTS

DESCRIPTION
EE
36

DESCRIPTION

The

Ignition
coil
is

of
an
oil

filled

type
The

ignition

coil
case
is
mted

with
oil
which
has

good
insulating
and

heat

radiating
characteristics

The

ignition
coil
has
a

greater
ratio
between
the

primary
and

secondary
windings
to

step
up
the

battery

voltage
to
the

high
voltage
to
cause

stronger
sparks
to

jump
the

spark

plug
gap

The

cap
is

made
of

alkyd
resin

which
offers

high

resistance

to
electric

arc
and
increased
insulation

The
resistor
in

the

ignition
coil
circuit

helps
produce

strong
sparks
from

starting
to

high
speed
full

power

operation

The
internal
resistor
limits

to
a
maximum
safe
flow
of

the

primary
current

through
the
coil
and
distributor

contact

points
Thus

it

protects
the
contact

points

during

slow

speed
operation
when

they
are

closed
for

long

intervals

The

ignition
coil
and
resistor

should
be
handled
as
a

matched
set

EE

36
SPECIFICATIONS
EE

37

@

@

@l

@

EE143

I

Primary
terminal

2

Secondary
terminal

3

Cap

4

Spring

5

Side
core

6

Primary
coil
7

Secondary
coil

8
insulator
oil

9
Center
core

10

Segment

tt

Case

Fig
EE
73
Construction