1968 DATSUN 510 bulb

10
CHAPTER
THREE

pressure
bUllt

up
In
each

cylInder
The

readIngs

when

properly
Interpreted
IndIcate

general
cyl

Inder
and
valve
condltlOn

Vacuum

Gauge

The
vacuum

gauge
IS

easy
to
use
but
dIfficult

for
an

Inexpenenced
mechanIC
to

Interpret
The

results
when
conSIdered
WIth
other

findIngs
can

prOVIde
valuable
clues
to

pOSSIble
trouble

Connect
the
vacuum

gauge
WIth

a
T
connec

tIon
In
the
hose
from
the
carburetor
to
the

vacuum
advance
on
the
dIstnbutor
Start
the

engme
and
let
It
warm

up
thoroughly
Vacuum

readIng
should
be

steady
at
18
22
Inches

NOTE
Subtract
1
Inch

from

reading

for

every
1000

feet
of
altitude

Figure
1
shows
numerous

tYPical
readIngs

WIth

InterpretatIons
Results
are
not
conclusive

WIthout

companng
to
other
tests
such
as
com

preSSIOn
readIngs

Fuel
Pressure

Gauge

ThIS
Instrument

IS
VItal
for

evaluatIng
fuel

pump
performance
Often

a
vacuum

gauge
and

fuel

pressure
gauge
are
combIned

Dwell
Meter

A
dwell
meter
measures
the
dIstance
In
de

grees
of
cam
rotatIon
that
the
breaker

pOInts

remaIn
closed
while
the

engme
IS

runnIng
SInce

thIS

angle
IS
determmed

by
breaker

pOInt
gap

the
dwell

angle
IS
an
accurate
IndIcatIon
of

pOInt

gap
Many
tachometers
Intended
for

tunIng
and

testIng
Incorporate
a
dwell
meter
as
well
Follow

the
manufacturer
s
InstructIon
to
measure
dwell

on
the
Datsun

Tachometer

A
tachometer
IS
essential
for

tunIng
Datsuns

WIth
exhaust
emission
control
deVices

IgmtIOn

turung
and
carburetor

adjustments
must
be

per

formed
at
the

specified
Idle

speed
The
best
In

strument
for
thIS

purpose
IS
one
WIth

a

range
of

0
1
000
or
0
2
000

rpm
Extended

range
0

6
000
or
8
000
Instruments
lack

accuracy
at

lower

speeds
The
InStrument
should
be

capable

of

detecting
changes
of
25

rpm
Stroboscopic
Timing
Light

ThIS
Instrument

pernuts
accurate

IgnitIon

tImIng
By
f1ashmg
a

bght
at
the

preCISe
Instant

cylInder
No
1
fires
the

posItIon
of
the
crank

shaft

pulley
at
that
Instant

can
be
seen
Marks

on
the

pulley
bne

up
With

a
reference

pOInter
on

the
block

dunng
the

tIming
procedure
SUltable

bghts
are
neon
bulb

types
and
xenon
strobe

hghts
Neon

tunmg
bghts
are
ddticult
to
see
and

must
be
used
in

dImly
bt
areas
Xenon
strobe

bghts
can
be
used
In

bnght
sunbght
Use
the

bght
accordIng
to
the
manufacturer
s
InStruC

tIons

Exhaust

Analyzer

Of
all
Instruments
descnbed
here
this

IS
the

least

bkely
to
be
owned

by
a
home
mechanic

One
Instrument

samples
the
exhaust

gases
from

the

taIlpIpe
and
measures
the
thermal
conduc

tIVIty
of
the
exhaust

gas
SInce
different

gases

conduct
heat
at

varYIng
rates
thermal
conduc

tIVIty
of
the
exhaust
IS

a

good
IndIcatIon
of

gases

present
This
Instrument
IS
VItal
for

accurately

checkIng
the
effectIveness
of
exhaust
emIssion

control

adjustments
but
IS
too

expenSIve
for
an

amateur
mechanIC
to
conSIder

buying

STARTER

Starter

system
troubles
are

relatIvely
easy
to

ISolate
The

followmg
are
common

symptoms

and
cures

1

Engme
cranks

very
slowly
or
not
at
all

Turn
on
the

headhghts
If
the

bghts
are

very
dun

most

likely
the

battery
or
the

connecting
WireS

are
at
fault

Check
the

battery
using
the

pro

cedures
descnbed

in
the
Tune

up
chapter
Check

wmmgfur
e
s
wom
andd
connectIom

H
the

battery
and

connectIng
WIres
check

good
turn
the

headlIghts
on
and

try
to
crank
the

engIne
H
the

lIghts
dIDl

drastIcally
the
starter
is

probably
shorted
to

ground
Remove
the
starter

and
test
it

usmg
the

procedures
gIven
in

Chapter

NIne
If
the

lights
remain

bnght
or
dun

slIghtly

when

crankIng
the

engme
the
trouble

may
be
in

the
starter
solenOId
or

wmng
To
ISolate
the

trouble
short
the
two

large
solenoid
ternunals

together
not
to

ground
if
the
starter
cranks

normally
check
the
solenoid
and

wmng
up
to
the

148

CHAPTER

ELEVEN

1

Insert

key
in

IgnItion
switch
and
turn
to
first

posltlon

2

Depress
accelerator

pedal
fully
LISten
for

the
solenOId

to
click
If

a
clIck
is
heard
the

solenoid
is

operating
correctly

3

Replace
solenoid
if
click

IS
not
heard
Before

replacing
solenoid
dram

apprOlumately
2

pInts
of
transmission
011
from
tranSmISsion
Re

fill
when
solenoid

replacement
is

complete

4
If
solenoId
IS

operatlng
correctly
but
trouble

persISts
check
WIres
for

continuity
With
electri

cal
tester

Linkage
Inspection
and

Adjustment

To

inspect
and

adjust
the

linkage
on
the

transmission

proceed
as
follows

Figure
4
j

shows
the

linkage
for
column
shift
models
and

Figure
47
shows
the

lInkage
for
floor
shift

models

1
Move
selector
from
P
to
1
and
back

again

several

tImes
If
the

lInkage
is

correct
a

slight

click
sh
uld
be
felt

and
heard
when

the
selector

is

set
at
each

position

2
If
the
lever

position
is

mcorrect
adjust
the

lin

age
in

t
ie
ngin
C
Q1I1

lT
me
t

s9

mat

f46

OSIoI0mm

00197
to

mJ

r2
oN

k
@
FRONT

tion
D
of
the
detent
manual
valve

alignS
with

posItion
D
of
the

pOSItIon
plate
as
shown
in

the
illustrations

Inhibitor
Switc
h

Checks

and

Adjustment

The
inhibItor

SWitch

lights
the
reverse

lamp

and

enables
the
starter
motor
to

operate
in
the

neutral
and

park
positIons
Figure
48
shows
the

construction
and

mountlng
of
the
InhibItor

SWitch
To
check
the
mhIbltor
switch

proceed

as
follows

r

I
5

1
InhIbitor
switch

2
Menual
shalt

3
Washer

4
Nut
5
Manual

plate

6
Washer

7
Nut

8
Inhibitor

switch

9

Range
select
Iner

1
Move
selector
lever
to
reverse

position
and

clieck
that
reverse

lamp
bun

lignts
If

not
in

spect
bulb
and

replace
1f
defectlve
If
bulb
is
all

right
replace
mhibItor
switch

2
Check
for

proper
operation
of
starter
motor

in

neutral
and

park
positions
If
abnormal
check

to

see
that

lInkage
IS
correct
If

linkage
IS
cor

rect
replace
Inhibitor
SWitch

NP
BRAND

3536

48
47
49

UP
TO
SEP
69
15

10
l

f
J

r
1
L

IZM
BRAND

39

39
AUTOMATIC
2
Steering
wheel
@

3
Blinker
pin

5
Spring

7
Contact
plate

8
Spring
washer

9
Screw

10
Spring

11
Horn
ring
assembly

12
Pad

13
Emblem

14
Retainer

15
Contact
cup

16
Insulator

17
Spring
washer

18
Machine
screw

20
Steering
wheel

21
Slip
ring

22
Insert

23
Horn
spring

24
Contact
spring

25
Cover

26
Contact
pleca

27
Contact
seat

28
Horn
ring
assembly

29
Horn
ring

30
Pad

31
Clamp

32
Contact
plate

33
Bushing

34
Emblem

35
Collar

36
Collar
fiXing
washer

37
Lock
washer

38
Hex
nut

39
Shell
assembly

44
Indicator
bulb

46
Hand
indicator
assembly

47
Scraw

48
Spring
washer

49
Screw

51
Shell
band

52
Escutcheon
o
I
l
I
l
i

J
I
Ci
l
QD
II
L

110
CHAPTER
FIFTEEN

FOR
MANUAL

IGNITION
KEY

i

I
MADV
Nf
D

BRAKE
POINT

v
sa

tS

57

51
Th
rottle
sWItch

52
Speed
sWItch

relay

53
Speed
detector

assembly
Q
FOR

AUTOMATIC

IGNITION
KEY

AOVANEO

BRAKE
POINT

I
SPEED

DETECTOR

SPEED
SWITCH

I
RELAY
MJsr
I

IQ

52

SOLENOID

VALVE

54

Relay

55
Screw

56
Clutch
sWItch

assembly
57

Relay
assembly

58
Screw

INSTRUMENT
METERS
AND

PANELS

Figure
9
Illustrates
the
instrument

panel
and

gauges
used
on
the
sedan
and

wagon
models

untIl
1970

Figure
10

page
212
shows
the
m

strument

panel
and

gauges
smce
1970

Figure
11

page
213
shows
the
lDstrument

panel
and

gauges
used
on
the

pick

up

HEATER

Figures
12

page
214
and
13

page
215
are

exploded
Views
of
the
heaters
used

on
the
sedan

and

wagon
FigDre
14

page
213
shows
the

heater
used
on
the

pick
up

WINDSHIELD
WIPER

Figure
15

page
216
illustrates
the
wind

shield

Wiper
system
used
on
the
sedan
and

wagon

smce
1969
Earlier
models

were
slrmlar

Figure

16

page
217
shows
the

wiper
motor
wlule

Figure
17

page
2
I
7
shows
the

Wiper
motor

Imkage
on
the

pick
up
WINDSHIELD
WASHER

Figure
18

page
218
is

an

exploded
View
of

the
WindshIeld
washer

system
used
on
the
sedan

and

wagon
smce
1969
The
washer
used
on
the

pick
up
IS
SImilar

HEADLAMP

The

headlamp
units
used
on
the
sedan

wagon

and

pick
up
are
all
similar
to
that
shown
m

Figure
19

page
219

Replacement
of

the
sealed

beam
UnIts

reqwres
that
the

headlamp
trim
be

removed
so
that
the
sealed
beam
unit
can
be

withdrawn

AdJustment
of
the

headlamps
should

be
referred
to

a

qualified
electrical

shop

Lamp
Bulb

Replacement

Bulb

replacement
consIsts
of

removmg
the

retamer

nng
and
lens
from
the
unit

removmg

the
bulb
and

replacmg
It
In
some
cases
the

BODY

ELECTRICAL

SYSTEM

217

bulb

socket
must

be

pulled
out
from
the
back

of

the
unit

and
then
the
bulb
can
be

replaced
Care

fully

mspect
the
unit
that

reqUIres
bulb

replace
ment
and
follow
the

appropriate

procedure

Make

certain

you

replace
the
bulb

with
one

rated
at
the
same

voltage
amperage
and
watt

age
Examples
of

units
that

might

require
bulb

replacement
are
the
front

park
and

directional

lamps
rear

combination

lamp
side

marker

lamps
interior
room

lamps
license

plate
lamps

and

engine

compartment
lamps

Fuse

Replacement

Whenever

a
fallure
occurs

m

any

part
of

the

electrical

system
always
check
the

fuse
box
to

see
1f

a
fuse
has
blown
The
fuse

box
is
located

on
the

firewall
within
the

engine

compartment

If
a
fuse
has
blown
It
will
be
eVident

by
bIacken

mg
of
the
fuse
or

by
a
break
of
the

metal
element

Within
the
fuse

The

wiring
diagrams
below

mdIcate

the
cir

cuits

that
are
connected

to
each
fuse

Before

replacing
a
fuse

always
detenIlIDe
what
caused

it
to
blow
and
correct
the

trouble

Never

replace

a
fuse
With
one
of

a

higher

amperage
ratIng
than

originally
used
Never

use
tmfOll
or
other
ma

tenal
to

Jump
across
fuse

tenIlIDals

Failure
to

follow
these

basic
rules

could
result
in

fire
or

damage
to

major
components

WIRING

DIAGRAMS

The

following
figures

provide
wiring
diagrams

for
the
sedan

wagon
and

pick
up
Figure
20

page
220

applies
to
the
sedan
and
station

wagon
with

manual
transmission

Figure
21

page
221
covers
the
sedan
and

station

wagon

With
automatic
transmission

Figure
22

page

222
is
for
the

pick
up
I

138

INDEX

H
OIl

pump

Descnptlon
36

Handbrake

Exploded
view

29

Adjustment
202

Inspection
and

repaIr
28

Cable
removal

front
sedan
and

wagon
197

Installation

58

Cable
removal
rear

pick
up
201

Removal

28
40

Cable
removal
rear
sedan

and

wagon
197

Cross
rod

removal

wagon
201

Exploded
views

198
200

p

Inspection
and

repair
201

Installation

201

Penodlc

mamtenance

Headlights

MaIntenance

mtervals
chart

7

Bulb

replacement
210

Penodlc

checks
6

Descnptlon
210

Recommended
lubncants
8

Exploded
view

219

Routine

checks
6

HeatIng
system

Piston

nngs

Descnptlon
210

Exploded
view

pick
up
213
Inspection
50

Exploded
VIews
sedan
and

wagon
214
215
Removal

45

Hood

lock
control
RIng
gap
50

Exploded
View

pick
up
225
Pistons

Descnptlon
34

Exploded
VIew
sedan
and

wagon
226

Inspection
50

Reassembly
54

Igmtlon
coil

111

R

Igmtlon

system

Tlmmg
23
Radiator

Troubleshooting
13

Exploded
view
90

Instrument

meters
and

panels
Removal
and

replacement
90

Descnptlon
210
Rear
axle

pick
up

Exploded
View

pick
up
213
Axle

case

166

Exploded
view
sedan
and

wagon
Inspection
and

mstalIatlon
164

1970
1972

212

Removal

164

Exploded
view

sedan
and

wagon
Sectional

view

163

through
1969

211
Rear

axle

wagon

Intake
manifold

Disassembly
158

Descnptlon
36

Exploded
view

158

Removal

42

Inspection
and

reassembly
160

InstallatIOn

160

Removal

158

M
Rear
axle
and

suspenSion
sedan

Exploded
view

152
153

Mam

beanngs
52

Inspection
and

repaIr
154

MaIntenance

penodlc
6
8

InstalIatlon
154

Master

cylInder
Removal

151

Exploded
vIew

smgle
188
Rear

spnngs
pick
up
166

Exploded
view
tandem

189
Rear

spnngs
wagon
161

Inspection
and

repllIr
188
Rear
axle
shaft
sedan

155
156

Reassembly
and
InstalIatlon

190
Rear

suspension
arm
sedan

155

Removal
and

disassembly
188
Rear

suspenSion
pick
up

Modelldentdicatlon

1

Exploded
view

166

Inspection
and

repllIr
167

InstalIatlon

167

0
Rear

spnngs
166

Removal

165

011

filler

30

Spnngs
166

d

43

Torques
67