1969 DATSUN B110 spark plugs

able
of

Contents

MAINTENANCE
TUNE

UP

DIsassembly
32

InspectIOn
RepaIr
33

VALVE

CLEARANCES
6

AdJustmg
Regulator
33

ENGINE

OIL

6

Assembly
33

OIL
FILTER

7

COOLANT
7

COMPRESSION
7

ELECTRICAL
SYSTEM

BATTERY

8

IGNITION
TIMING

8
STARTER

36

DIstributor

Breaker
Pomt

9
Removal

37

Condenser

9

InstallatIOn
37

Spark

Plugs
9
Trouble

Shootmg
37

Carburetor

9

ALTERNATOR

36

Idle
LImIter

Cap

10

Removal

37

Dash

Pot
automatic
transmISSIOn

11
InstallatIOn

37

model

only

11
REGULATOR

39

Carburetor

Return

Sprmg

11

DeSCriptIOn
39

Fuel
Filter
11

Trouble

Shootmg
40

ENGINE

IGNITION
SYSTEM

DESCRIPTION
14

DISTRIBUTOR
44

REMOVAL
14

ConstructIOn

44

INSTALLATION
14

Checkmg
and

Adjustment
44

CLEANING
INSPECTION
14

SP
ARK
PLUGS

46

DISASSEMBL

Y
14

DeSCriptIOn
46

INSPECTION
REPAIR

18

InspectIOn
46

PreparatIOn
18

Cleamng
Regap
47

Cyltnder
Head

18

Valve

Assembly
18

Valve

Spnng
19

Valve
Rocker
Shaft

Rocker
Arm

19

FUEL

SYSTEM

Valve
LIfter
Push
Rod

20

Camshaft
Camshaft

Bearmg
20
FUEL
FILTER

50

Valve

Tlmmg
20

DESCRIPTION
50

Cyltnder
Block

21
REMOVAL

50

PIston
Piston
Pm

Plsto
LRmg
21

INSTALLATION

50

Connectmg
Rod

23
FUEL

PUMP

50

Crankshaft

24

DeSCriptIOn
50

Bushmg
Bearing
24

Testmg
51

Crankshaft

Sprocket
Removal

DIsassembly
52

Camshaft

Sprocket
25

InspectIOn
52

Flywheel
25

Assembly
52

ASSEMBL
Y

25

CARBURETOR

52

PrecautIOn

25

DeSCription
52

Cyltnder
Head

25

Adjustment
53

PIston

ConnectIng
Rod

26

Removal

58

Engme
26

DIsassembly
58

OIL
PUMP

32

Cleanmg

InspectIOn
59

Removal

Engme
m

vehicle
32

Assembly
InstallatIOn

60

I

aintenIDce
une

up

Find
the
cause
for

necessary
corrective

action

b
Oil
with

extremely
low

viscosity
in

dicates
dllutton
with

gasoline

Check
011
level
If
found
below
L
mark
refill

to
H
mark
on

gauge

OIL
FILTER

The
011
filter

IS
of

a

cartndge
type

Check
for
011
leaks

through
gasketed
flange
If

any

leakage
IS
found

retIghten
shghtly
If

nece

sary
replaLe
filter
as

an

assembly

When

mstalhng
an
011
filter

tIghten
by
hand

Note
Do
not

overtighten
011
fIlter

or
oil

leakage
may
result

I

I
Fig
3

Checking
engine
011
level

Oc
OF

I
0
121

20141

30
21

401401

5015BI

I

EGOQl

I
10
20

Fig
4

Protection
concentration
COOLANT

L
L
C

IS

al
ethylene
glycol
base

product
con

tammg
chemical
mhlbltors
to

protect
the

coohng
system
from

rustmg
and
corrosIOn

The

L
I
C
does
not
con
tam

any
glycerme

ethyl
or

methyl
alcohol
It
wIll
not

evaporate

or
bOll

away
and
can
be

used
wIth
either

high

or
low

temperature
thermostat
It
flows

freely

transfers
heat

effiCiently
and
will
not

clog
the

passages
m

the

coohng
system
The
L
L
C

must
not
be
mIxed
wIth
other

products
ThiS

coolant
can
be
used

throughout
the
seasons
of

the

year

Whenever

any
coolant
IS

changed
the

coohng

system
should
be
flushed
and

refilled
wIth
a

new
coolant

Check
the
level

COMPRESSION

Compression
pressure
test

Note
To
test

cylinder
compression

remove
all

spark
plugs
and
hold

tester
fit

Percent
BOllIng
pomt

concen
09

kg
cm2
Freeze

tra
lion
Sea
level

coolmg
sys

protectIon

tern

pressure

30

2210F
2550F
50f

50

2280
F
2610F
31oF

ETO
104

Fig
5

Testing
compressIon
pressure

7

aiDtenaDce
TUDe

up

ting
tightly
m

spark

plug
hole

of
a

cylin

der

The
tester
is
used
to
determme
whether

cylinder
can
hold

compression
or

whether

there
IS
excessive

leakage
past

rings
etc

Test

compressIOn
wIth

engme
warm
all

spark

plugs
removed
and
throttle
and
choke
valve

opened
No

cyhnder
compressIOn
should
be

less
than
80
of

highest
cyhnder
s
Excessive

variatIOn
between

cyhnders
accompamed
by

low

speed
missing
of
the

cyllndel
usually
10

dlcates

a
valve
not

properly
seating
or
a

blOken

pIston
ring
Low

preSsures
even

though
umform

may
indIcate

worn

rings

ThIs

may
be

accompamed
by
excessive
011

consumptIOn

Test
Conclusion

If

one
or
more

cyhnders
read

low

Inject
about

one

tablespoon
of

engine
011

on

top
of
the

plstons
In

low

readmg
cyhnders
through

spark

plug
hole

Repeat
compressIOn
check
on

these

cy
II
nders

If

compressIOn
Improves

conSiderably
piston

rings
are
defectIve

If

compressIOn
does
not

Improve
valves

are

stIcking
or

seatIng
Improperly

If
two

adjacent
cyhnders
mdlcate

low
com

pressIOn
and

mjectmg
011

on

pistons
does
not

Increase

compreSSIOn
the
cause

may
be
a

cylInder
head

gasket
leak
between

the

cyhn

ders

Engine
011
and
coolant
In

cylInder
could

result
from
this

problem

CompressIOn
pressure

178
to
206

pSI
at
350

rpm

BATIERY

Check

electrolyte
level
10
each

battery
cell

Unscrew

each
filler

cap
and

Inspect
flUId

level
If
flUId

level
IS
low
add

dIstilled
water

to

bring
level

up
to

approximately
03937
to

07874
In
above

plates
Do
not

overfill

Mea
ure

P
illL
gravlty
of

pattery
el

c

trolyte

8
Clean

top
of

battery
and
terminals
With
a

solutIOn
of

baking
soda
and
water
Rinse
off

and

dry
WIth

compressed
atr
The

top
of
bat

tery
must
be
clean
to

prevent
current

leakage

between

terminals
and
from

poSItive
termlndl

to
hold
down

clamp

In
additIOn
to

current

leakage
prolonged
ac

cumulatIon
of
aCId
and
dirt

on
the

top
of
bat

tery
may
cause

bhstenng
of
the
material

covering
connector

straps
and
corrOSIOn
of

straps
After

tightening
terminals
coat
them

With

petrolatum
vasehnel
to

protect
them

from

corrosIOn

IGNITION
TIMING

Check

spark

plugs
and
dIstributor
breaker

pOints
for
conditIon

I

I

Thoroughly
wipe
off
dIrt
and
dust
from

tlmmg

j

marks

on
crank

pulley
and
front

cover

Warm

up
engine

suffiClently

PermIssIble
Full

charge
value

value
at
68OF

Fngld
chmates
Over
1
22

128

TropIcal
chmates
Over
I

18
123

Other
clunates
Over
1

20
126

j

J

I

ET002

Flg
S

Gheckmg
the

speCific
gravity
of

baltery
elec

trolyte

f

l

aiDteDaDce
UDe

up

Install
a

timing
lIght
on
No
1

cyhnder
spark

plug
WIre
and
Install
a
tachometer

Set

Idhng
ipeed
to

approximately
800
rpm

Check

19mtlOn
tImmg
If
It

IS
50BTDC
Before

Top
of
Dead
Center

by
the
use
of

tlmmg

hght

If

necessary
adjust
It
as
follows

Loosen
iet

screw
to
such
an
extent
that

dlstnbutor
can
be
moved

by
hand

AdJu
it
IgmtlOn
tIming
to
50BTDC

Lock
dlstnbutor
set
screw
and
make
sure

that
tlmmg
IS
correct

IgnitIOn
tImmg
degreel
50
B
T
DC

Distributor
Breaker
Point

Check
dlstnbutor
breaker

pomts
for
abnormal

pItting
and
wear

Replace
If

necessary
Make

wre

they
are
In
correct

ahgnment
for
full
con

tact
and
that

pOint
dwell
and

gap
are
correct

Clean
and

apply
dlstnbutor

grease
to
cam
and

WIck

Note
Do
not

apply
grease
excessively

Dl
tI
IbutOl

POint

gap
0
018
to
0
022
In

Dwell

angle
49
to

55

degrees

Condenser

Clean
outlet
of
condenser
lead
WIre
and
check

for
loose
set
screw

RetIghten
If

necessary

Check
condenber

capacIty
With
a

capacity

meter

Fig
7

Checking
Igmllon
timing
Condenser
msulatlOn
resistance

may
be
also

checked

usmg
a
tester

by
adjusting
ItS

range

to
measure

large
resIstance
value
When
con

denser
IS
normal
the
tester

pomter
swmgs

largely
and

rapidly
and

moves

gradually
back

to
the
Infimte
SIde
When
the

pomter
does
not

stay
still
or
It

pomts
zero
m
reSIstance

replacement
IS

necessary

Condenser

capacIty

022

J
F
MIcro
Farad

Condenser
InsulatIOn
resIstance

5
Mn

Mega
ohms

Spark
Plugs

Remove
and
clean

plugs
In
a
sand
blast

cleaner

Inspect
each

spark
plug
Make
iure

that

they
are
of
the

specified
heat

range
In

ipect
msulator
for
cracks
and

chIps
Check

both
center
and

ground
electrodes
If

they
are

excessIVely
worn

replace
WIth
new

spark

plugs
File
center
electrode
flat
Set
the

gap
to

0031
to
0035
m

USIng
the

proper
adjustIng

tool

Tighten
plugs
to
11

0
to

150
ft
Ib

torque

CARBURETOR

Idle
mixture

adjustment
requIres
the
use
of
a

CO
meter
When

preparIng
to

adjust
Idle

mixture
It

IS
essential
to

have
the
meter

thoroughly
warmed
and
cahbrated

Warm

up
the

engme
suffiCiently

ContInue

engIne
operatIOn
for
one
mmute

un

der

ldhng
speed

I

i

I

I

I

I

I

I

ETOQ4

Fig
8
Checking
dlstnbutor

POint

gap

Bngine

Remove
the
altel
nator
and

engine

mounting

bracket

L
H
slde

Remove
the
crankshaft

pulley

Remove
the

011

pump
together
With
the
011

filtel

Remove
the

high
tensIOn
cable
wIth
the

dlstnbutor

cap
on

Remove
the

spark
plugs

Remove
the
dlstllbutor

assembly

Remove
the
carburetor

Remove
the
rocker
cover

Remove
the
thermo
itat

houslllg

Remove
the
manifolds

Remove
the
water

pump

Remove
the
fuel

pump

Fig
16
Manifolds
removal

Fig
17
Water
pump
removal

18
Remove
the
rocker
shaft

assembly
and

push

rods

Remove
the

cylInder
head

assembly

Invert
the

engine

Fig
18

Rocker
shaft

assembly
removal

7

1

l

I

h
Y
r

I
w

L
1

Fig
19
Cylinder
head
bolts
removal
sequence

o

Fig
20
011
strainer
removal

j

BBgiBe

Fig
70

Tlmmg
mark

Fig
71
Dlstnbutor
mstallatlon

Notes
a
Set
the
No
1

piston
to
its

top

dead
center

of
the

compression
stroke

b
Before
installation
return
the

distributor

rotqr
approximately
60

degrees
from
Its

regular
position
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
fittmg
as
shown
in
the

Figure

Install
the

spark

plugs
and
connect
the

distrIbutor
to

plug
high
tensIOn
lead

wire

Install
the
fuel
hoses
and
tubes

Install
the

clutch
cover

assembly

Install
the

engme
shngers
and
crankcase

ven

tilatIOn

hose
Fig
72

Removal
of
011
pump

TrochoId

Fig
73011

pump

OIL
PUMP

Removal

Engine
in
vehlCIe

Dram

engme
OIl

Remove
the
front
stabilIzer

Remove
the

splash
shield
board

Detach
the
011

pump

body
together
with
drIve

gear

spmdle

Disassembly

PrIor
to

dlsassembhng
check
to
determme

that
the

pump
IS
defective

Take
out

a
total
of
2
bolts

securmg
the

pump

cover
to
the

pump
body
The
outer
and
mner

Dlsmount

the

engme
from
the

workmg

stand
rotors
and
drive
shaft
can
then
be
dlsassem

Install
the

engme
mountmgs
bled

32

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
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