1969 DATSUN B110 Service Repair Manual

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lenition
Sptem

IGNITION

SECONDARY

COI

L

COI

L
CAP

BREAKER
POTNT

cr

r
7
W

tc

l

uToRI
8
TO

STARTER

l

J
ROTOR

HEAD

SPARK

PLUG

Fig
19

Igmtlon
system
Circuit

diagram

The

IgmtlOn
CirCUIt
conSIsts
of
the
distributor

IgmtIon
cOli

IgmtIon
sWitch

spark
plugs

hIgh
tensIOn

cable
and
the

battery
Figure
76

shows

IgmtlOn
CirCUIt

DISTRIBUTOR

Construction

The
dIstributor

consists
of

high
tension

voltage
part
SWitch
off

part
centrifugal
ad

vancing
angle
part
vacuum
advance

mechamcal

part
and

drlvmg
part

Figures
77
and
78
show
the
constructIOn
and

exploded
view

Checking
and

Adjustment

Cap
and
rotor
head
must

always
be

kept
clean

to

maintain

good
insulation

durability
since

high
tensIOn

voltage
from

IgmtIon
cOil

IS
Im

posed
on
them
SometImes
inside
of
the

cap

and

rotor
head
IS
covered
wIth
fine
carbon

partIcles
and
dust
Whenever
crack
or
trace
of

leakage
IS
found
on
the

cap

replace
w1th

a

new
one

44
Recommended
the
rotor
head
also
be

replaced

wIth
a
new
one
If

excessively
damaged

When

pomt
surface
IS

roughened
due
to
bur

nlng
polish
with
a

fine

emery
paper
No
500

or
600
or
011
stone

When
the

point
IS

worn

excessively
replace
When
the

POIn
IS

replaced
with

a
new
one

apply
grease
to
the

arm

pivot
receiver
and

cam
surface
For

causes
of

damaged
burnt

point
Improper

pomt
contact
msufficlent

point
gap
and

defective
condenser

are
conSidered

The
standard

pomt
gap
IS
0
0177
to

0
0217
m

When

gap
IS
devIated
from
the

standard

gap

adjust
Turn
the
shaft
to

a

posItIon
where
the

breaker

arm
heel
rides
the

cam

lug
a

posItIon

where

pomt
gap
IS
maxImum
loosen
the

gap

adjusting
screw

apply
a
thIckness

gauge
bet

ween
contacts
and

adjust
to
the
standard

pomt
gap

When

measurmg
breaker

pomt

spring
ten

SIOn

apply
sprmg
tensIOn

gauge
to
the

breaker

pomt
and

posItIon
the

sprmg
tenslOn

gauge
m

right
angle
agamst
the
breaker

arm

Ignition
Iptem

FIg
80
Structure
D411
80

CID

0

A

t
CID

l@J
rf

@

@
@

2

@

@

ID
@

FIg
81

Exploded
View
of
dlstnbutor

D411
80
1
Center

carbon

2
Rotor

head

3

Breaker

plate

4

Condenser

5

FIxing
plate

6

Housing

1
Side

plug

8

Cap

9
Com

10
Governor

werght

11
Sh
lft

l2
PIRIOn

1

Assembly

clamp
cap

2

Aucmbly

clamp
cap

3

Assembly
shaft

4

PlOlon

5
A
uembly

eam

6

Assembly
weight

governor

7

Spnng
governor

8
Screw

9

Assembly
rotor
head

10

Washer
thrust

II

Assembly
breaker

plate

12

Set
contact

13

Assembly
termmaJ

14

Assembly
control
vacuum

IS
Screw

16

AssembJy

condenser

17
Screw

J

8
Assembly

cap
dJstnbutor

19

Assembly
pomt
carbon

20
Plate

fixing

21
Bolt

22

Housing

45

Ignition
Sptem

The
standard
breaker

pOint

spring
tensIOn

IS

1
1

to
1
4
lb

Replace
If
devIated

Performance
of
condenser
IS
affected

by
Im

proper

setting
contaminatIOn
and
reductIOn

of
In
ulatlOn

resIstance
Thus

pellOdlcal

checking
I
I

eqlJ
lred
to
maintain
the
outlet
of

lead
wire
clean
and
to

prevent
et
screw
from

loosening
Checking
the
condenser

capacIty
IS

checked

USing
a

capacity
meter
It

may
be
also

checked
condenser
Isolate

resl
tance

USing
a

tester

by
adjusting
ItS
I

ange
to
measure

large

I
eSlstance
value

When
the
condenser
IS
normal
the
tester

pOinter
SWings
1m

gely
and

rapIdly
and
moves

gradually
back
to
the
Infimte

SIde
When
the

pOinter
does
not

stay
stili

or
It

points
Zero
In

reSIstance

replacement
IS

necessary

Fig
82

AdJusllng
POint

gap

Fig
83

Measunng
breaker

POint
spnng
tension

g
SPARK
PLUGS

Description

The

spark
plugs
are

of
the
re
lster

type

haVing
0
551
In

threads
and

0031
to

0035
11i

gap

Note
All

spark
plugs
installed

on
an

engme
must

be
of
the

same
brand
and

number
of
heat

range

Inspection

Remove

spark
plug
wIre

by
pulhng
on
boot

not

on
WIre
Itself

Remove

spark
plugs

Check
electrodes
and

Inner
and
outer

por

celams
of

plugs
noting
the

type
of

depOSits

and
the

degree
of
electrode

erO
lOn
Refer
to

Figure
85

Normal
Brown
to

gl

aYlsh
tan

depoSits
and

shght
electrode
wear
indIcate
correct

spark

@

I

Pnmary
terminal

2

Secondary
terminal

3

Cdp

4

Sprang

5
SIde
core

6

Prrmary
coil
7

Secondary
COIl

8
Insulator
011

9

enter
lore

10

Segment

II

Case

Fig
84

Construction

Icnition
Sptem

Ovcrhc
Jtmg

Norm
Jl
i
r

rJ
I

ttr
I
i

V

Carbon
fould

Fig
85

Spark
plug
Life

plug
heat

range

Carbon
fouled

Dry
fluffy
carbon

depo
lts
on

the

Insulator
and
electrode

were

mostly

caused

by
slow

speed
dnvlng
In

cIty
weak

Ig

nltlOn
too
nch
fuel

mixture

dirty
aIr
cleaner

etc

It
IS
advIsable
to

replace
WIth

plugs
havmg

hotter

heat

range

011

fouled
Wet
black

depoSits
show

excesSive

oIl
entrance

Into
combusllon

chamber

through

worn

rmgs
and

pIstons
or
excessIve
clearance

between
valve

gUIdes
and

stems
If
the

same

condition

remams
after

repair
use
a
hotter

plug

Overheatmg
WhIte

or

hght
gray
msulator

WIth

black
or

gray
brown

spots
and

blUIsh

burnt
electrodes
indIcate

engme
overheatIng

Moreover
th
e

appearance
results
from
in

correct

IgnitIon

tIming
loose

spark
plugs
low

guel
pump
pressure
wrong
selectIOn

of
fuel
a

hotter

plug
etc

It
IS
adVisable
to

replace
WIth

plugs

havmg

colder

heat

range

After

cleaning
dress

electrodes
With

a
small

fine
file
to
flatten

the
surfaces
of
both

center

and
Side

electrodes
In

parallel
Set

spark
plug

gap
to

specification
FIg
86

Settmg
spark

plug
gap

Install

spark
plugs
and

torque
each

plug
to
11

to
15
ft
Ib

Connect

spark
plug
wires

Cleaning
and

Regap

Clean

spark
plugs
In

a
sand

blast

type

cleaner
A
VOId

excessIve

blasting
Clean
and

remove
carbon

or
OXide

depoSits
but
do
not

wear

away
porcelain
If

depos1ts
are
too

stub

born
discard

plugs

After

cleaning
spark
plugs
renew

firing
sur

face
of
electrodes
With
file

mentioned
above

Then

gap
spark
plugs
to
0
030
to
0
035
In

uSing
a
round

wire
feeler

gauge
All

spark

plugs
new
or
used
should

have
the

gap

checked
and
reset

by
bending

ground

electrode

II

A

1n
v

v
1
l

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t

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fJ
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1

t

ii
V

ruel

Sptem

FUEL
FILTER
DESCRIPTION

The
fuel
filter
IS
of

a

cartndge
type
It
uses

paper
element

as
traIner

element
which
can

be
checked
for
condItIOn
from
outsIde

ThIS

filter
cannot
be
cleaned

Replace
the
filter
at

the

peclfied
servICe
Interval
01
If
It
becomes

clogged
or
I
estncted

REMOVAL

DIsconnect
Inlet
and
outlet
fuel
hnes
from

fuel
filter
and

remove
fuel
filter

if

EF005

Fig
87
Sectional
view
of

cartridge
type
fuel
filter
Note
Before

disconnecting
fuel
lines
use

a
container
to
receive
the

remaining
fuel

In
lines

INSTALLATION

InstallatIOn

IS
the

reverse
of
removal

FUEL
PUMP

Description

The
fuel

pump
transfers

gasoline
from
the

tank
to
the
carburetor
In

suffiCient

quantity

to

meet

engine
requIrements
at

any

speed
or

load

The
fuel

pump
IS
of
the

diaphragm
type

The
fuel

pump
conSIsts
of

a

body
rocker
arm

and
link

assembly
fuel

diaphragm
fuel

diaphragm

spnng
seal
Inlet
and

outlet

valves

The
fuel

diaphragm
consists
of

specially

treated
rubber
whIch
IS
not
affected

by

gasohne
held

together
WIth
two
metal
diSCS

and
a

pull
rod

t

Fig
88
SchematiC
view
of
fuel

pump
R

0

Fuel

Sptem

Testing

A
fuel

pump
IS

operatIng
properly
when

1tS

pressure
IS
Within

specifications
and
ItS

capacIty
IS

equal
to

the

engine
s

reqUIrements

at
all

speeds

Pressure
and

capacity
must

be
determined

by

two
tests
With
the

pump
mounted
on
the

engIne
Be

sure
that

there
IS

gasohne
m

the

tank

when

conductIng
these

tests

Fig
89
Pull

rod
removal
StatIc

Pressure
Test

The
static

pressure
test
IS
conducted

as

follows

Disconnect
the
carburetor

fuel
line
at
the

car

buretor

Install
the

necessary

adapter
and
tee

fitting

to
the
fuel
Ime
and
attach

a
SUitable

pressure

gauge

Start

and
run

engme
at

varymg
speeds

The

readIng
on
the

gauge
IS

the
static

fuel

pressure
and

thIS

should
remam
wlthm

the

follOWing
Itmlts

2
61b

sq
m

Pressure

below
the
lower
hmlt

IndlCates
ex

treme

wear
on

one

part
of
a
small
amount

of

wear
on
each

working

part

They
also
md1cate
a

ruptured
dIaphragm

worn

warped
dirty
or

gummmg
valves
and

seats

or
weak

dIaphragm
return

spring

Pressure
above

the

upper
hmlt

Indicates
an

excessIVely
strong
dIaphragm
that

IS
too

tight

ThIS

condItIOn

reqUIres
removal
of
the

fuel

pump

assembly
for

replacement
or

repair

I

V
lvc
llllh

2

PdlklOg

3
Retamer

4

Stre

5

p

6

Ga
ket

7
Screw

8
Washer

prln

9
Rocker
Jrm

10
Rocker

pm

II

Ro
ker
fm

pTln

12

Spdcer

13

Diaphragm
assembly

14

15
Retiuner

16

Diaphragm
sprtng

17
Washer

5PIlllg

18
Nul

19
Washer

plalO

20
Ga
ket

21

Spacer

22

Complete
body
lower

23
Connector
anlet

24
Connector
outlet

Fig
90
Structure

of
fuel

pump

51