1969 DATSUN B110 oil

llectrical

Spt

When

Harting
lWltch

I

IgllltlUn
iwltch

FJuhy

rctuflung

Repldce

set
10
OFf

the
slJrl

motor

do
nut
MJgnclK
Wltdl
Seiad

contJr
l

Repldcc

IIlg

I

op

Shorted
1

011

Replace

Faulty
plunger

slidmg

Replace

StJflillg
motOr

Pillion
does
not

dlsengJge
from
the

Repair
or

replace

nng
gedr

smoothly

Pinion

sphne
dot
110t

disengage

Repan
or

replJce

moothly

SCl7Cd

pinIOn
metal

Replace

REGULATOR

Description

The

regulator
basically
consists
of
a

voltage

regulator
and
a

charge
relay
The

voltage

regulator
has
two
sets

of
contact

poInts
a

lower
set

and

upper
set
to

control
alternator

voltage
An

at
mature

plate
placed
between

the
two
sets
of
contacts

moves

upward
or

downward
or

Vibrates
The
lower
contacts

when

clo
ed

complete
the
field
CIrCUIt

dIrect

to

glOund
and
the

upper
contacts
when

closed

complete
the
field
CIrCUIt
to

ground

through
a
resIstam
e

field
COl

and

produces

alternator

output

The

charge
lelay
IS
SimIlar
In

constructIOn
to

the

voltage
regulator

When
the

upper
contacts

are
closed

IgnitIOn

warnIng
lamp
goes
on

As
for
the

constructIOn
the

voltage
regulator

IS

very
SImIlar
to
the

charge

relay
as
shown
In

Figure
78
I

POlnlsap

2
lower

nt
CI

3

Arm2fu1C

4

COfe

ap

5

Yokeg
lp

6

Connecting
pnn
t

T
Yolce

8

AdJu
fln

rcw

9
Lock
nul
Crew

13

4mmlOlli15
nldll

SCrew

14
RlaCI
I

15

Upper
Rlact

a
COlUlruci
o
o

voltage
ulato

O
0
1

EEOSJ
I
Point

gap

2
Char

Clay
nl3el

3

ConMctmg
pun

4

Armature
nl
daa

5
Core

ap
re

6
Yoke

Jap
14
4
mm
0
1575
n
dla

7
Yoke

rew

8

AdJu
llng
Cre
IS
nfaC

t
e1

9
Voila

ere
ulal0t

l
ontal
1

b

COfUtruclton

of

cha
rt
ay

FIg
n
View
of

removing
cover

FIg
78
Structural

view

81

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

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

ruel

Sptem

Troubles

Power

shortage

Improper
IdlIng

Rough
engIne
Idle

or

eogme
stop

Engme
Idle
too
fast
Possible
causes

Gauge
plate
adjustment
mcorrect

Choke
valve
does
not

open

Outlet
valve
seat

of
accelerator

pump
1m

proper

Lmked

openmg
of

secondary
throttle
valve

too

early

each
mam

Jet
clogged

EaLh
throttle
valve
does
not

fully
open

Fuel

pump
operated
Improperly

uel
stramer

clogged

Vacuum

Jet
clogged

Power
vdlve

operated
Improperly

Slow

Jel
dugged

Fat
h
thronle
valve
does
not
close

Secondary
throttle
valve

operated
Im

properly

Eal
h
throttle
valve
shaft
wear

Packing
between
mamfold
and
carburetor

defective

Fuel
overflows

Incorrect
carburetor

adjustment
Idle

speed

Idle
miXture
choke

settmg

Incorrect
baSIC

1
OIt100

tunmg

Incorrect

automatic
temperature
control
air

cleaner

Defect
or
malfunction

of

Igmtlon
system

spark
plug
lugh
tenSion

cable
breaker

JX
Int

Ignition
COIl
etc

Trouble
In
throttle
lInk
and
cable

Incorred
throttle

opener
adjustment

Trouble
In

PCV
valve

Trouble
In
automatic

choke

Defect
or

malfunctIOn
of

Igmhon
s
stem

spark
plug
hIgh
tenSion
cable
breaker

pomt
Ignition
Call
elc
Remedies

Correct

adjustment

Adjust

Lap
or

replace

Adlust

Clean

Adjust

Repair

Clean

Clean

Adlust

Clean

Adlusl

Overhaul
and
dedn

Replace

ReplaLe
tlghtenlllg

See
the
fust
Item

Adjust
Idle

speed
mixture
dnd

tUllIng

Adjust
19mtlon
timing

Adjust
automatlL

temperature
control
air

cleaner

Adjust
or

replaLe
IgllltIun
system

Chel
k
throttle
hnk
and
Lable

Adjust
throttle

opener

Replace
PCV
vJlve

Adjust
auotmJtIL
l
hoke

Adjust
or

replac
e

IgllltIun
system

J

81

r
Brakes

Moreover
In
order
to

prevent
brake

squeahng
a
shIm

IS
Inserted
behind
the

pad

BRAKE
PAD

Replacement

Jack

up
front
UnIt
of
the
vehicle
and
remove

the
front
wheel

Remove

clip
from
the

retaining
pin
and

sup

porting
the
brake

pad
remove
the

retaining

pin
and
COil

spring

Unhook
the

hanger
spring
and
Withdraw
the

brake

pad
and
shim
With
a

pair
of

phers

Note
When
the
brake

pad
IS
removed
do

not

depress
the
brake

pedal
or
otherWise

the

piston
will
come
out

Inspection

Clearance
between
the
brake

pad
and
rotor
IS

adjusted
automatically
Check
the
brake

pad

Fig
115

WIthdraWing
brake

pad
and
shIm
for

wear
after
the
first
6
000
miles

driVing

and

every
3
000
miles
thereafter

Clean
the
brake

pad
With
carbon

tetrachloride

or

gasohne

When
011
and
or

grease
IS

heavIly
stlcked
on

the

pad
or
when
deteriorated
or
deformed
due

to

overheating
replace
the

pad
With
a
new

one

When
thickness
of
the
friction
material

pad

IS
less
than
0
0630
In

replace
Replace
when

total

pad
thIckness
IS
less
than

0
2402
In

Note

Replace
pads
as
a
set

Replacement

at

only
one

position
may
cause
uneven

brake
effect
It

IS
recommended
that

rotation
of

pads
be
made

periodically

Check
the
rotor

Reinstallation

Clean
the

calipers
and

piston
pad
installing

parts

Note
Do
not

use
mineral
oil
Be
careful

not
to

apply
oil

on
the
rotor

Depress
the

pIston
Into
the

cyhnder
so
that

new

pad
can
be
Installed

Note
a
Note
that
brake
fluid

may
over

flow
from
the
reservoir
It
is
recommen

ded
that

operation
be
carried
out

by

loosening
the
breather
to
release
brake

fluid

b
The

piston
can
be

easily
pushed
in

by

hand
But
if

pushed
excessively
the

Fig
116

DepreSSion
piston
A
and
B
Into

cylinder

88

Brakes

groove
of

pIston
goes
insIde
of
seal
as

shown
in

Figure
117
and
the
seal
will
be

damaged
When
the

piston
is

pushed
ex

cesslvely
mto
the

cylinder
remove
the

brake

assembly
disassemble
It

push
out

the

piston
to
the
arrow
direction
as

shown
in

Figure
117
and
reassemble

Install

pad
and
antt

squeal
shim
assemble

the
anti

squeal

spring
and

retaining
pin
and

ecure
them
with

cltp

Install
the
shim

so
that
the

arrow
mark

pOints
the
rotor
forward

rotating
directIOn

Apply
the
COIl

spring
to
the

retaining
pin

which

IS
distanced
from
the

atr
bleeder

111
PlSton
seal

I
2

I
Normal

position
I

Fig
117
Piston

pushIng
In

posllIon

FIg
118
Arrow
mark
on
shim

78
When
the

pad
IS
Installed

depress
the
brake

pedal
several
tl
mes
so
as
to
settle
down
the

pad
In

the

posltton

CALIPER

Removal

Remove
the
brake

pad

DIsconnect
the
brake
tube
from
the
wheel

cyltnder

Remove
the
strut

assembly
and
knuckle
arm

installatIOn
bolt
so
as
to
ease
removal
of
the

cahper
assembly
installatIOn
bolt

Remove
the

cahper
assembly
installatIOn
bolt

and

separate
It

from
the
strut

assembly

Fig
119
RemOVing
strut
assembly
and
knuckle
arm
in

stallatIon
bolt

Fig
120

RemOVing
caliper
assembly
Installallon
bolt

Brakes

DIsassembly

Remove
mud
and
other
contamInations
from

the

caLiper
as

embly
before
dlsa

sembly

DraIn
bl
ake
fluId

flOm
the
wheel

cylinder

Loosen
the

aIr
bleeder
and

depres
the

pistons
A
and
B
Into
the

cylInder
See

FIg

125

Secure

the

yoke
In
a
vIse
and

tap
the

yoke

head

with
a
hammer
The

cylinder
body
can

then
be

removed
from
the

yoke
When

remOVIng
the

cylinder
body
be
careful
not
to

allow

the

piston
A

comIng
out
from
the

cylIn

der

FIg
121

TapPing
yoke
head

5

I

B

Q
Retamlng
nng

J
Boot

Fig
122

Cylinder

body
and

piston
Remove
the

bIas

nng
from
the

piston
A

Remove
the

retaInIng
nngs
and
boots
from

the

pistons
A

and
B

Depress
and

remove
the

piston
from

the

cylin

der

Remove
the

piston
seal
from

the

cylinder

Note
Remove
the

p1ston
seal

carefully

w1th

fmgers
so
that
the

cylinder
wall
is

not

damaged

Remove

the

yoke
prIng
and

yoke
bias

sprIng

from
the

yoke

Inspection
and

Repair

Thoroughly
clean
all
dIsassembled

parts
and

check
them
for
the

follOWIng
Items

Note
When

cleaning
rubber

parts
use

alcohol
or
brake
fluid
If
rubber

parts
are

cleaned
wIth

mmeral
Oil

they
will
be

detenorated

Calzpers

If
the

cylInder
wall
IS

damaged
or
worn

replace
If
the

cylinder
wall
IS
rusted

or

foreIgn
matters

are
accumulated
on
the

cylIn

der
wall

carefully

polIsh
wIth
fine

emery

paper
so
that

the

cylInder
wall
IS
not

damaged
If

rusted
or

roughened
excessively

replace

Pad

See

paragraph
covenng

replacement
of

pad

PIston

Replace
If

unevenly
worn

damaged
and

or

rusted

Note

The

piston
slidmg
surface
is

plated

Thus

do
not

use

emery
paper
although

rusted
or

foreign
matters
are
sttcked

on

the

sliding
surface

Seals

Prlmanly
replace
both

pIston
and
dust
seals

whenever

overhauling

n