1973 DATSUN B110 Service Repair Manual

ENGINE

ffi68
mmAq
14
5

mAq

3

way
connector

Cock

II
M

nam
e
Flow

guide
valve

This
valve
is
mounted
in

the

engine
compartment

f
tHks
A
F
and
C
are

engraved
in
the

body
of
the

valve
to

indicate
the
connection
of
the

vapor
vent
line

l
l
1

from
Fuel
tank

to
Crankcase

Fig
EF
3B
Flow

guide
valve

MAINTENANCE
AND

TESTING

Checking
of
fuel
tank

vapor
liquid

separator
and

vapor
vent
line

Check
all
hoses
and
fuel
tank
filler

cap

2
Disconnect
the

vapor
vent
line

connecting
flow

guide

valve
to

vapor
liquid
separator

Flow
guide
valve
3
Connect
a
J

way
connector
a
manometer
and
a
l
ul
k

or
an

equivalent
3

wav

change
cock

to
the
end
of
the

vent
line

4

Supply
fresh
air
into
the

vapor
vent
line

through
the

cock
little

by
little

until
the

pressure
becomes
368

romAq

14
5
in

Aq

5

Shut
the
cock

completely
and
leave

it
that

way

6

After
2
5
minutes
measure
the

height
uf
the

liquid
in

the
manometer

7
Variation
of

height
should
remain
within
25

mmAq

1
0
in

Aq

8
When
the

filler

cap
does
not
close

completely
the

height
should

drop
to
zero
in
a
short
time

9
I
f
the

height
docs
not

drop
to
zero

in
a
short
time

when
the
filler

cap
is
removed

it
is
because

of
the

stuffy

hose

Note
In
case
the
vent
line
is

stuffy
the

breathing
in
fuel

tank
is
not
thoroughly
made
thus

causing
insuf

ficient
delivery
of
fuel
to

engine
or

vapor
lock
It

must
therefore
be

repaired
or

replaced

1
m

eparator

1
Fuel
filler
cap

Y

XI

EC029

Fig
EF
39

Checking
evaporative
emission
control

system

EF
26

FUEL
SYSTEM

Checking
fuel
tank
vacuum
relief

valve

operation

Remove
fuel

filler

cap
and
see
if
it
functions

properly

as
follows

Wipe
clean
valve

housing
and
have
it
in

your
mouth

2

Inhale
air
A

slight
resistance

accompanied
by
valve

indicates
that

valve
is
in

good
mechanical
condition

Note

also
that

by
further

inhaling
air

the
resistance
should
be

disappeared
with

valve
clicks

3
If
valve

seems
to
be

clogged
or
if

no
resistance
is

felt

replace

cap
as
an
assembled
unit

1
1

1I

L

CD

hl

cv
CID

t

I
Valve

2
Valve

housing

I
I
Spring

Valve
seat

Fig
EF
40
Fuel

filleT
cap

EF
27
Checking
of
flow

guide
valve

1
Disconnect

all
hoses

connected
to
the

flow

guide

valve

2

While
lower

pressure
air
is

pressed
into

the
flow

guide

valve
from
the
ends

of
vent

line
of

fuel
tank
side

the
air

should

go
through
the
valve
and

flow
to

crankcase
side
If

the

air
does
not

flow
the
valve
should

be

replaced
But

when
the

air
is
blown

from
crankcase
side
it

should
never

flow
to
the

other

two
vent

lines

3
While
the

air
is

pressed
into

the
flow

guide
valve
from

carburetor
air
cleaner

side
it

flows
to
the

fuel
tank
side

and
or

crankcase
side

4
This

valve

opens
when
the

inner

pressure
becomes
10

romHg
0
4
in

Hg
In
case
of

improper
operations
or

breakage
replace
it

iFrom

r
carburetor

air
cleaner

From
fuel
tank

To

r
crankcase

j

iJ
i

ill

1
1

EC030

Fig
EF
4
J

Flow

guide
valve

DATE
ENGINE

SERVICE
JOURNAL
OR
BULLETIN
REFERENCE

JOURNAL
or

BULLETIN
No
PAGE
No

SUBJECT

EF
28

DATSUN

1200

MODEL
B
11

0
SERIES

L
NISSAN

I

NISSAN
MOTOR
CO

LTD

TOKYO
JAPAN
SECTION

EE

ENGINE

ELECTRICAL

SYSTEM

BATTERY

STARTING
MOTOR

CHARGING

CIRCUIT

ALTERNATOR

REGULATOR

IGNITIO
N

CIRCUIT

DISTRIBUTOR

IGNITION
COIL

SPARK
PLUG
EEl

EE
3

EE

15

EE

16

EE

23

EE

29

EE
29

EE

36

EE

37

ENGINE
ElECTRICAL
SYSTEM

BATTERY

CONTENTS

REMOVAL

CHECKING
ELECTROLYTE
LEVEL

CHECKING
SPECIFIC
GRAVITY
EE
1

EE
l

EE
1

REMOVAL

Disconnect
the

negative
terminal

first
and
then

the

positive
terminal

2
Remove
the
retainer
nuts
and
take
off

retainer

3
Release

retainer
bolts
and

remove

battery

CHECKING

ELECTROLYTE
LEVEL

Adjust
the

electrolyte
level
in
the

battery
when
the

battery
is
in
a

fully
charged
condition
The

electrolyte

hould
maintain
its
indicated

correct
level

in
the

battery

N
water
other
than

distilled
water
should
be
added

Q

cD

I

1
Vent

plug

2

Electrolvte

3
Level
indicator

Fig
EE
1

ElectTolyte
level

CHECKING
SPECIFIC
GRAVITY

The

specific
gravity
of
the

battery
liquid
is
measured

by
means
of
a

hydrometer
When

according
to

the
table

described

later
the

charging
of

the

battery
is
below

60

percent
the

specific
gravity
is
below
1

20
as
corrected

at

200e
680F
and
also

when
the
difference
in

the

specific
CHARGING

BATTERY
FREEZING
EE
2

EE
3

gravity
of

the
individual
cells
is
above
0
025
the

battery

must
be

changed
or

adjusted

tl

f

ead

p
level

jSCale
2

II

It
I
TheTmat

gauge

I
2

Hydrometer

Fig
EE
2

Checking
specific
gTavity

Temperature
conversion
in

measuring

specific
gravity

The
standard

specific
gravity
of
the

electrolyte
is

obtained
when
the

battery
is

fully
charged
at
an
electro

lyte
temperature
of
200

e
680
F

When

temperature
rises
loe
1
80F
the

specific

gravity
decreases
0

0007
and

reversely
when

temperature

drops
loe
I
ROF

the

specific
gravity
increases

0
0007

Therefore

assuming
the

specific
gravity
at
tOe
is

St

S20

the

specific

gravity
at
200e
680F

is
calculated

according
to

the

following

expressions

S

o
St

0
0007
t
20

If
0

0007
t
20
is
X

S

o
St
X

Accordingly
if
X
is
known
beforehand
S

o
can
be

obtained

easily
The
values
of
X

are
shown
in
the

following
table

EE
1

ENGINE

Temperature

Oc
of
Temperature

C
F
x
Temperature

Oc
F
x

0
32
0
0
014
14
572
28

82
4

0

004
0

006

33
8
IS
59
0
19

I
84
2

0
013

2

35
6
16
60
8

0
003
30
86
0

0
007

3

37
4
0
012
17
61
6

0
001
31
87
8

0
008

4

39
2
18
64
4

32
89
6

0
011

0
001

5
41
0
19

66
2

33
91
4
0
009

6
42
8
0

010
20
68
0

0
34
93
2
0
010

7
44

6
0
009
21
69
8
35
95
0

0
001
0
01l

8
46
4
22
71
6
36
96
8

0
008

9
48
2
23

73
4
0

002
37
98

6
0
012

10
50
0
0
007
24

75
2

0
003
38
100
4

0
013

II

51
8
25

77
0

39
t02
2

0
006

0
004

12
53
6

16
78
8
40

104
0

0
Ot4

13
55
4
0

005
27
80
6
0

005

The
state

of

discharge
of

the

battery
can
be
determined

by
checking
the

specific
gravity
according
to
the
follow

ing
table
The

electrolyte
level
should
be

satisfactory

U

tn

l

k
1

I
P

I

IZf

I
r7

42
I

bt
7

J
I
I

11
0

I
M
I

L
J
I

10
20
30
0
50

60
70
aD
90

100

Charging
condition

Fig
EE
3

Charging
condition

CHARGING

When
the

specific
gravity
of
he

electrolyte
is

below

1

20
with

the

electrolyte
level

being

satisfactory
it
is

necessary
to

recharge
the

battery
Whenever
a

quick
x

Converted

specific
gravity
520

V

9d

f

o
1

28

u
1
6

c

E

1
24

l
22

o

0

U5

S

I

1

1
2

1
10

1

NON
M

i

Electrolyte

temperature
lOCI

charge
is
carried
out
the

negative
terminal
of
the

battery
must
be
disconnected
The
corroded
terminal

posts
of
the

battery
should
be
cleaned
with
warm

water
of

bicarbonate

of
soda
solution

prior
to

charging
The

following

points
should
be
observed
in

charging

If
the
electrolyte
level
is

below
the

plates
add

distilled
water

2
Remove
all
the
vent

plugs
and

keep
them

at
a

particular
place

3

Keep
the

electrolyte

temperature
below
450C

l130F
during
charging

4

During
charging
the

voltage
increases

gradually
until

it

reaches
the

particular
maximum
value
2
5

Vice
II
The

charging
is

completed
when
this
value

stays
almost

constant
for
more
than
one
hour
and
all
cells

gas
freely

EE
2

ENGINE
ElECTRICAL
SYSTEM

5

If
the

specific

gravity
is
above
1
260
200C
or
680F

after

charging
adjust
it

by
adding
distilled
water

6

Keep
any
open
flame

away
from
the

place
where
the

battery
is

being

charged

7

Replace
vent

plugs
and
clean
the

upper
face
of
the

battery
after

charging

BATTERY

FREEZING

Temperatures
at
which

battery

electrolyte
freezes

vary

with

acid
concentration
or
its

specific

gravity
A

battery

with

an
insufficient

state
of

charge
will

freeze
at
lower

temperatures
If

specific

gravity
of
a

battery
falls
below

I
I

the
indication
is
that
the

battery
is

completely

discharged
and
will

freeze

readily
when

temperatures
fall
below

freezing

point

Note
Use
extreme
caution
to
avoid

freezing

battery
since

it
will

usually
ruin
the

battery

o

I

I
1

G
10

I

1
o

i
20

I

u
30

I
I
0

40

I
0

SO

I

60

0

I
E

f
o

70

I

80

1
00

1
04
1
08
I
12

1
16
20

24
1

28
1
32

E

E004

Specific
gravity
of

electrolyte

Fig
EE
4

FTeezing
point
of
electrolyte

STARTI
NG

MOTOR

CONTENTS

OPERATION

CONSTRUCTION

REMOVAL

DISASSEMBL
Y

CLEANING
AND

INSPECTION

Terminal

Field
coil

Brush
and
brush

lead
wire

Brush

spring
tension

Armature

assembly

Over

running
clutch

assembly

Testing
brush

holder
for

ground
EE
3

EE
4

EE
4

EE

5

EE
6

EE
6

EE

6

EE

6

EE
6

EE
7

EE
8

EE
8

OPERATION

The

purpose
of
this

starting
system
is
to
crank
the

engine

When
the

ignition
switch
is
set

to
start
current
flows

through
the
series

and
shunt

coils
of
the

solenoid
and
Pinion

case

bearing
metal

Magnetic
switch

assembly

REASSEMBL

Y

TESr

Performance
test

Diagnoses
of
test

Magnetic
switch

assembly
test

SPECIFICATIONS
AND
SERVICE
DATA

Specifications

Service
data

TROU8LE

DIAGNOSES
AND

CORRECTIONS
EE
8

EE
8

EE
9

EE
9

EE
g

EE
10

EE
10

EE
11

EE
11

EE

11

EE
12

thus
the

solenoid
is
excited
The

plunger
is

pulled
into

the
solenoid
so
that

it

operates
the
shift
lever
to

engage

the
drive

pinion
with

flywheel
ring

gear
and

the

magnetic

switch
is

closed

EE
3

When

the
contacts

stationary
and

movable
are
dused

the
motor

operates
to
crank
the

engine
and
the
series

coil
of
the
solenoid
is
cut
out
The

magnetic
force
of
the

shunt
coil
is

sufficient
to
hold
the

pinion
in
mesh
after

shifting
the

system

When
the

engine
is

operated
and
the

ignition
switch
is

set
to
ON
the
series
coil

demagnetizes
the
shunt

coil
and
the
return

spring
actuates
the

plunger
to
return

to
the

original
position
Consequently
the

motor

stops

More

positive
meshing
and
demeshing
of
the

pinion
and

the

ring
gear
teeth

are
secured

by
means
of
the
over

running
clutch
The

over

running
clutch
employs
a
shift

lever
to

slide
the

pinion
along
the

armature
shaft
so
as
to

engage
or

disengage
with
the

ring
gear
teeth
The

over

running
clutch
is

designed
to
transmit

driving
torque

from
the

motor
armature
to
the

ring
gear
and

to

permit

the

pinion
over

running
the

armature
when
the

engine
is

started
ENGINE

ijJ

1

t

2

3

4

5

6

7
Stationary
contact

Serie
coil

Ignition
switch

Solenoid

Shunt
coil

Plunger

Return

spring
8

Shift
lever

9
Drive

pinion

10

Ring
gear

11
Pinion
sleeve

spring

12

Armature

13
Movable

contactor

14

Battery

Fig
EE
5

Starting
motor
circuit

CONSTRUCTION

1

2

3

4

5

6

7

8

9

10

11

12

13
j
@

Gear
case

Du
t
cover

Shift
lever

Dust
cover

Shift
lever

pin

Magnetic
switch

Center
bracket

Armature

Thrust
washer

Metal

Stopper
washer

Stopper
l

lip

Pinion

stopper
@

@

o

@
i
1I
@
@
@

14

15

t6

17
Pinion

Over

running
clutch

Field
coil

Yoke
18
B
rush
cover

19

Brush

20
Rear
cover

21

Through
bolt

Fig
EE
6

Exploded
view

of
staTting
motoT
SI14
B7M

Disconnect
the

black
and

yellow
wire
from
the

magnetic
switch

terminal
and

black

battery
cable
from

the

battery
terminal
REMOVAL

I
Disconnect
the

ballery
ground
cable

EE
4