1968 DATSUN 510 drain bolt

28

CHAPTER
FIVE

011

gallery
supphes
011
to
the
crankshaft
mam

beanngs
Dnlled

passages
m
the
crankshaft

direct
oil
from
the

mam

bearings
to
the

con

nectmg
rod

beanngs
011

mJected
from

jet
holes

in
the

connectIng
rods

IS
directed

to
the

cylmder

walls
and

piston
pins
0U
dlstnbuted
from
the

mam

gallery
enters
the
cham
tensioner
The

pad

IS
held

against
the
cham

by
011

pressure
and

spnng
tension
The

tmung
chain
receives
011

through
the

Jet
located
near
It

LubncatIon
IS

supphed
to
the

cyhnder
head

mam
011

gallery
through
the
crankshaft
center

beanngs
Camshaft

beanngs
on
the

cyhnder

head

are
fed

directly
from
the

cyhnder
head

mam

gallery
The
rocker

arms
and
valves
are

lubncated

intermittently

by
the
camshaft
011

gallery
and
the

small
channel
at
the
base
CIrcle

portIon
of
each
cam
OllIS

supphed
to
the
cam

shaft
011

gallery
through
the
No
2
and
No
3

camshaft

bearings

OIL
PUMP

The
011

pump
IS
mstalled
m
the
bottom
of

the

front
cover
as
shown
in
2
The

pump
is

held
m

place
by
four
bolts
to
the
front
cover
It

IS
a
rotor

type
dnven

by
the
011

pump
spmdle

whIch
IS
dnven
off
of
the
crankshaft
Pressure
IS

regulated
by
a
valve
shown

m

Figure
3
A
slot

at
the

top
of
the
dnve
rotor

engages
a

dog
clutch

at
the
lower
end
of
the
distnbutor
dnve
shaft

assembly
The

011

pressure
rehef
valve

IS
not

adjustable
In
the
released

pOSition
the
valve

pernnts
011
to
be

by
passed
through
a

passage
on

the

pump
cover
to
the
mlet
Side
of

the

pump

CD
CD

Oil

Pump
Removal

1
Remove
the
dIStnbutor
from
the

top
of
the

front

cover
Make
certam
to
mark
the

posItIon

of
the

dtstnbutor
relative
to
the

front
cover
so

that

It
can
be

replaced
m
the

same

posItIon

2
Drain
the

engme
od

3
Remove
the
front
stabIhzer
from
the
bottom

front
of
the

engme
compartment

4
Remove
the
front

splash
shIeld
from
the
bot

tom
front
of
the

engine
compartment

5
Remove
the
bolts

holdmg
the
oil

pump
to

the

front
cover
Remove
011

pump
and
drive

gear

spmdle
from
the
front
cover

Disassembly
Inspection
Repair
and

Assembly

Figure
4
IS
an

exploded
VIew
of
the
011

pump

assembly
Refer
to
the

figure
and
the

accom

panymg
index

1

Separate
the

body
cover
from
the

011

pump

body
by

unscreWIng
the

secunng
bolt

2
Remove
the

pump
dnve
mechamsm
and

dnver

gear
from
the

pump
body
Clean
the
dIS

assembled

parts
m
a
suitable
solvent

3

Inspect
for

Signs
of
wear
or

damage
Reparr

or

replace
as

necessary

4

Inspect
the
drive
rotor
shaft
for

excessive

wear
or

sconng
Check
the

followmg
clearances

a
Side

clearance
between
mner
and
outer

rotor
00020
to
00047
m
005
to

0
12mm

b

Tip
clearance
0
0492

m
0
12mm

c
elearance
between

outer
rotor
and

body

00059

to
0
0083
in
015
to
0
21mm

5
Check
the
relief
valve

spring
dtmenslOn
to

ensure
that
It
has
not
lost
tension

Free

length

should
be
2
24

m
57mm

Compressed

length

30
CHAPTER
FIVE

should
be
1
54
m
39mm
If
the

spnng
tension

is

accurate
the
rehef

valve
should

open
at
54
0

to
59
7
lb

1m
3

8
to
4
2

kg
cm

6
Reassemble
the
oil

pump
Make
certain
all

gaskets
are
mounted
flat

to
avoid
leaks

7
Install
the
dnve

spindle
and
the
oil

pump
to

the
front
cover

8
Install
the
distnbutor
in
the
same
relative

locallon
from
which
it
was
removed
If
the
num

ber
1

cyhnder
was
at

top
dead
center
on
the

compression
stroke
the

punch
mark
on
the
dnve

spindle
should
face
toward
the
front
of
the

engine

9
Install
the
front

splash
shield
and
the
front

stablhzer

10

Insert
the
drain

plug
in
the

pan
and
refill

the

engme

11
Oil

pressure
at
idle
should
be
142
to
17
1

lb

lin
1
0
to
1
2

kg
cm

12

Tlghtenmg
torque
values
for
the
oil

pump

mounting
bolts
is
10
8
to
152ft
lb
1
5
to
2
1

kg
m
and
21
69
to
25
31
ft
lb
3
0
to

25

kg
m

for
the
release

valve

cap
nut

Oil

Filter

The
oil
filter
is
mounted
on
the

nght
hand
side

of
the

cyhnder
block
It

IS
a

cartndge
type
with
built
m

gasket
and
threads
onto
the

mounting

spindle
The
filter
should
be

replaced
every

6
000
miles
as
follows

1
Dram
the

engme
oil
Walt
10
15
minutes

before

removmg
oil
filter

to
allow
It
to
dram

2

By
hand

or
with
the
aid
of

an
oil
filter

wrench

unscrew
the
filter
from
the

spmdle
as

shown

m

Figure
S

3

Cleanmg
of
the

oil
filter

IS
not
recommended

Rather

replace
It
as

reqUIred

4
Thread
the
new
oil
filter
onto
the

mounting

spindle
by
hand
Do
not

overtighten
or

leakage

nught
occur

4l
4111a
78
mml

la78mml

42
4
42
4OIla50mml

t
4544
i

35
45
lIq
D

1
43
45
44

6

1i
45
43
42
41
45
44
46
46
47

8
78mml
I

Tlmmg
Indicator

48
lock
washer
spring

49
Water
Inlet

50
Rubber
cap

51
Rubber
cap

52
Hosa
clamp

53
Inlet
watar
gasket

54
Hex
bolt

55
lock
washer
spring

56
Connector

57
011
filter
cartndge

58
front
engme
cover

59
61
Bloel
cyllndelllner

18
15
58

57

1
Cylinder
block
assembly

2
Main
beanng
bolt

3
Dowel

4
Block
dowel

5
Block
dowel

6
Block
to
transmIssIon

case
dowel

7
Tlmmg
chaIn
covar
dowel

8
Welch
plug

9
Taper
plug

10
Crankcase
011
seal

11
Bearing
011
seal

12
Drain
plug

13
011
pressure
sWitch

14
011
level
gauge
guide

15
Oll
evel
gauga
r1
26
54

25
011
pan
gasket

26
Hax
bolt

27
lock
Sprl
ng
washer

28
011
cooler
hose
clamp

29
Hose
cl
mp

30
Tube
clamp

31
Tube
clamp

32
Clamp
spacer

33
Hex
bolt

34
Washer

35
Crankcase
011
seel

36
Waler
pump
dowel

37
Water
pump
dowel
38
RIght
hand
front
caver

gasket

39
left
hand
front
cover

gasket

40
Hex
bolt

41
Hex
bolt

42
lock
washer
spnng

43
Hex
bolt

44
Hex
bolt

45
Lock
washer
spring

46
Tlmmg
Indicator

47
IndIcator
rivet

22

16
23
Drain
plug
washer

24
Dram
plug
e
l
lIlI
1M
1M

38

CHAPTER
SIX

EMISSION

CONTROL
DEVICES

All

Datsuns
have
a
sealed

type
of
crankcase

emISSion
control
device
and
an
exhaust
emISsion

control
deVice
Models
sold

m
Cahfornla

smce

1970
also
have
an

evaporative
emisSion

control

deVice
An

rmportant
part
of
the

exhaust
control

device
is
the
air

pump
located

at
the

bottom
left

hand
side
of
the

engme
It

IS
dnven

by
a
belt
off

of
the
crankshaft

pulley
and

supphes
air
to
the

exhaust

system
In
1972

an
electric
blower
in

corporated
m
the

air
cleaner

replaced
the

mechanical

pumI

ENGINE
REMOVAL

Expenence
has

shown
It
IS
easier

to
remove

the

engine
and

the
transmission

as
a

smgle
UnIt

than

to
remove
the

engme
alone
Once

the
en

gine
and

transmiSSIon
are

out
of

the
vehIcle
the

tranSmIssion
can
be

detached
from
the

engme

To
remove
the

engme
transmISsion

proceed

as
follows

1
Scribe

ahgnment
marks
on
the
hood

around

the

hmges
ThIS

will
make
remstallatlon

eaSIer

2
Remove
the

two
bolts
that
secure

each

hInge

and

remove
the
hood

It
is

not

necessary
to
re

move
the
hood

support
from

the

engme
firewall

3

DISconnect
the
lower

radIator
hose

from
the

right
hand
SIde
of
the

engine
and
at
the
bottom

of
the
radIator
ThIS
will

pernnt
coolant
to
dram

from
the

engme
and
the

radIator

4

Remove
the
draIn

plugs
from
the

engine

pan

and
translIDSsIon

and

completely
dram
lubn

cants
Into
suitable

contamers

5
DISconnect

the

battery
cables
from

the
bat

tery
loosen

the
two
hold
down

clamps
and

re

move

the

battery

NOTE

The
location
and

number

of

hoses

to
be
removed

from
the
air

cleaner
varies

from
model
to

model

It
IS

normally
easier
to
remove

the

hoses

from
the
sources
rather

than

try

to

dISconnect

them

from

yndemeath

the

air

cleaner
The
1972
model

Will

requlre
dlsconnectlOn

of
the
electrica1

cirCUit

In
the
air

cleaner

system
wing
nut
from
the

top
of
the
air
cleaner
and

remove
the

aIr
cleaner

7
DIsconnect
the

upper
radiator
hose
from
the

radiator
and
the
thermostat

housmg
Remove

the
hose

8
Disconnect
the
two
heater

hoses
from

the

nght
hand
side
of
the

engme
TIe
these
bac
so

they
won
t
interfere
with

removal
of
the

engme

9
Remove
the
radIator

grille

by
unscrewing
all

mountmg
screws

10
Remove
the
four

mounting
screws

holding

the
fan
shield
to
the
backside

of
the

radiator

11
Remove
the
four

mountmg
bolts

holdIng
the

radiator

In

place
In
automatic
tranSmISsion

models
dISconnect

the
two
transnnsslOn
oIl

cooler

lInes
from

the
bottom
of
the
radiator

Pull
the

radiator

straight
up
to
remove
Remove

the
fan

shield

12
Loosen

the

adjustment
and

mounting
bolts

from

the

retamIng
brackets
on
the
alternator

and

air

pump
If
so

eqwpped
The

alternator
is
lo

cated
at
the
bottom

nght
hand
Side
of
the

engme

and
the
air

pump
on
the

lower
left
hand
Side

13
Loosen
tenSIon

on
the

two
dnve
belts

re

move
the
belts
from

the
alternator
and
air

pump

and
then
from
the

fan

pulleys

14
Remove
the
bolts

holdIng
the
fan
and

pulley

to
the
water

pump
assembly
and
remove
the

fan
and

pulley

15

DISconnect
the
fuel
hne
from
the
fuel

pump

16
DIsco

ect
accelerator

control

linkage
and

choke

WIre
at
the
carburetor

17
Disconnect

the

wiring
from

the
starter

motor
alternator

Ignition
coIl
oIl

pressure

switch

and

temperature

transmItting
unit

NOTE
The

following

steps
are

per

formed

from
under
the
car
lack

up

the

front
of
the

car
and

position

stands
under

the

front
support

points

to

proVide

working
room

under

the

vehicle

WARNING

Never

climb
under
a
vehicle
that
is

supported
by
the

lack
only
If
stands

are

not
avflllable

sturdy
wooden

blocks
can

be
U3ed

6
Disconnect
all
hoses

that
lead
to
the

air

cleaner

remove
two

bolts
that
hold
the
air

cleaner
to

its

mountmg
bracket

unscrew
the
18
Remove
two
bolts

holdIng
the
clutch

operat

Ing
cylInder
to
the

flywheel
hOUSIng
shown

m

ENGINE
59

2
Coat

the

pan
gasket
on
both
sides
With

gasket

compound
and
attach
the

oil

pan
to
the

cyhnder

block

Torque
as

specIfied

Manifold
and
Carburetor
Installation

1
Install
the
mtake
and
exhaust
manIfolds
WIth

associated

gasket
to
the

cylmder
head

2
Mount
the
carburetor
and

gasket
to
the
mtake

manIfold

2

Adjust
all
mtake
and
exhaust
valves
to
the

specIfied
clearance
for
a
cold

engme

Clutch

Assembly
Installation

CAUTION

Take

extreme
care
not
to

get
grease

or
011
on
the

clutch
or

flywheel
frlc

hon
contact

surfaces

1
Place
the
clutch
disc

assembly
on
the

flywheel

With
the

longer
chamfered

splmed
end
of
the
dISC

toward
the
transmISSion

2

Visually
align
or
use
a

dummy

splmed
dnve

shaft
to

ahgn
the
diSC

assembly
With
the

flywheel

pilot
beanng

3
Install
and

tighten
the
SIX
bolts

holdmg
the

clutch
cover

assembly
to
the

flywheel
Tighten

the
bolts
a
turn
each
tune

by
diagonal
pattern

until

they
are

tight
Tlghtenmg
torque
should
be

174

to
188ft
lbs
24
to
2
6

kg
m

NOTE
There
are
two
dowels
on

the

flywheel
to

locate
the
clutch
cover

4
Remove

dummy
shaft
If
used

after
the

above
bolts
are

fully
tightened

5
Refit
the
release

bearing
and
translI11Ssion

case
Miscellaneous
Installation

1
Connect
the
fuel
hose

on
the
front

part
of
the

engme
to
the
fuel

pump
and
to
the
carburetor

2

Gap
the

spark
plugs
and
mstall
them

usmg

new

gaskets

3
Coat
the
rocker
arm
cover

gasket
With
sealer

and

position
It
on
the

cylmder
head

4
Install
the
rocker
arm
cover
and

tighten
the

two
thumb

screws
that
hold
it

m

place

5
Install
distrIbutor

makmg
certam
that
the

notch

on
the
distributor
shaft

assembly
mates

With
the
drive

spmdle
Ahgn
the
location
marks

made

dunng
disassembly
so
that
the
distrIbutor

is

positioned
as
before

6

Install
and

tighten
the
bolts
which
hold
the

dIStributor

to
the
front

cover

7
Install

pomts
condenser
and
rotor

8

Replace
distrIbutor

cap
and
attach

spark
plug

Wires
m
the
correct

sequence
Make
certain
that

all
wires
are

firmly
seated
m
the
distrIbutor

cap

and
attached

securely
to
the

spark
plugs

9
HOISt
the

engme
assembly
from
the
work

stand

10
Install
the
alternator
bracket
alternator

and

engme
mounts
to
the
block

11
Install
the

IgnItIon
coil
oil
filter
oil

pressure

SWitch

dipstick
and

water
drain

plug

12
Connect
the

vacuum
Ime
between
the
dis

trIbutor
and
carburetor

13
Connect
the
transIDlSSlOn
to
the

engine
prior

to
mstallatIon
m
the
vehicle

Engine
Installation

Installation
is
the

reverse
of
the

procedures

followed
m

removal
Be
certaIn
thatlall

battery

connections
are
made

that
water
hoses

are
se

cured

wmng
IS
connected

properly
and
that
all

required
bolts
and
mounts
are
mstalled
and

tightened
Replace
the
radiator
fan
belts
and

radiator
shroud
Fill
the

engme
With
the

proper

grade
of
oil
and
the
radiator
With

recommended

coolant
Install
the
hood

to
the

hInges
according

to
the
marks
made

dUrIng
removal

SERVICE
DATA
AND
SPECIFICATIONS

Table
1
covers
servIce
data
and

engme
Speci

fications

76
CHAPTER
SEVEN

Carburetor

Assembly

Assembly
is
the
reverse
of

dISassembly
Make

certam
all

gaskets
are
mounted
flat

Be
careful

not
to
use
force
In

assembly
Make
certam
that

all
Interlock
lInks

operate
smoothly

FUEL
TANK

Description

FIgures
15
16
17
and
18
are

exploded
views

of
the
fuel
tanks
used
on
the
sedan
and

wagons

Figure
15
IS
for
sedans

through
model

year
1969

Figure
16

applIes
to
sedans
from
1970
With

evaporative
control

system
F

q
nre
17
shows
the

statIon

wagon
through
1969

Figure
18

applIes

to
the

statIon

wagon
WIth

evaporative
control

system
f

m
1970
The
fuel
tank
for
the

pIck
up

is
shown
m

Figure
19

A
fuel
return

system
from
the
carburetor
to

the
fuel
tank

keeps
fuel
from

becommg
over

heated
m
the
carburetor
float
chamber
When

the
normal
level
m
the
float
chamber

IS
exceeded

a

pressure
valve

opens
and
returns
the
excess

fuel

to
the
tank

Removal
Sedans

1
Remove
drain

plug
m
bottom
of
fuel
tank
and

drain
the
fuel
into
a

suitable
safe
contamer

2
Detach
rear
seat
and
seat
back
See

Figure
20

3

Open
trunk
lId
and
remove
the
trunk
finISh

mg
board
4
DIsconnect
wire

leadmg
to
fuel

gauge
umt

5
DIsconnect
and
remove
the
fuel
inlet
tube

See

Figure
21

6
DIsconnect
rubber
tubes
of
fuel
outlet
and

fuel

return
lInes
from
the
tank

7
Remove
four

fixmg
bolts
and
lock
washers

from

edge
of
fuel
tank

8
Remove
fuel
tank
from
vehicle

Removal

Wagon

1
Remove
draIn

plug
from
bottom
of
fuel
tank

and
dram
the
fuel
mto

swtable
safe
contatner

2
Disconnect
WIre

leadIng
to
fuel

gauge
unit

3
Disconnect
and
remove
fuel
mlet
tube

4
DISconnect
rubber
tubes
of
fuel
outlet
and

fuel
return
lInes

5
Refer
to

Figure
22
Remove
four

fixing
bolts

holdmg
tank
in

place

6
Remove
fuel
tank
from
veh1c1e

23
19
21
20
I
13

11

12
I
14

L
1

A
21

I

26

TO
CRANK
CASE
@

1
Fuel
tank
assembly

2
Drain
plug

3
Drain
packing

4
Fuel
tank
filler
neck

5
Screw

6
Fuel
tank
filler
hose

7
Hose
clamp

8
Hose
clamp

9
Filler
cap
assembly

10
Filler
cap
packing

11
Fuel
tank
gauge
umt

12
0
ring

13
Fuel
geuge
loc
l
plate

14
H
bolt

15
Plain
washer

16
Spnng
wesher

17
Fuel
gauge
earth
plale

18
Rubber
plug

19
Tank
reseNOlr
essembly

20
H
bolt
With
washer

21
Plein
washer

22
Breather
tube

23
Breather
tube

24
Breether
tube

25
Nylon
clip

26
Rubber
grommet

27
Shim
QD
g

j

QO

@

15

I
1
Fuellank
assembly

17
8
2
Fuel
tank
drain
plug

3
Packing

4
Weld
nul

5
Plain
washer

6
Spllng
washer

7
Hex
bolt

33
8
Upper
filler
tube
assembly

9
Filler
hose
assembly

10
Hex
nut

11
Plain
washer

U
12
Spllng
washer

25
13
Machine
screw

rt
41
40
14
Hose
clamp

2i
15
Filler
cap
assembly

27
J
16
Filler
cap
packing

L
1
17
Filler
neck
packing

21

35
20
Fuel
gauge
O
lIng

20
21
Fuel
tank
gauge
Unit

23
Tank
reservoll
assembly

24
Spllng
washer

25
Screw

26
Breather
tube

27
Breather
tube

28
Breather
lube

29
Breather
tube

30
Breather
tube

31
Breather
tube

32
Breather
tube

33
Breather
tube
assembly

34
flexible
hose

35
Flexible
hose

36
flexible
hose

37
Fuel
tank
to
crankcase
tube
a

39
Reservoll
pipe
assembly

TO
CR
CASE
I
Y
40
Hose
clamp

41
Hose
clamp

I
42
Hose
clamp

37
30
1
43
Machine
screw

44
Spllng
washer
rIJ

45
Rubber
grommet

I
fi

j