DATSUN 510 1968 Service Owner's Guide

26

CHAPTER

FOUR

2
Check
all
belts
hoses
and
fuellmes

Replace

If

reqUIred
Check
the
tensIon
of
the
belts
for

the
au

pump
and
the
alternator

Adjust
as
re

qUIred
Normal
deflection
of
the
belts
when
pushed
m

by
hand
should
be

approXImately
0
5

m

13mm
as
shown
m

Figure
7

3

Inspect
the
011
filter
for
leaks

TIghten
or
re

place
as

necessary
The
filter
should

replaced

at
least

every
6
000
mIles

4

Inspect
the

lIlr
cleaner

for
excessIve
accumu

latIon
of
dIrt

Replace
at

least

every
24
000
miles

under
normal

operatmg
cornhtIons

5

Carefully

mspect
the

water

pump
and

the

radIator
for

SIgnS
of

leaks

Repair
as

necessl
i
y

6
Check
the
emissIoo
control
deVice
If

so

eqwpped
Refer

to

Chapter
Ten
for

checks
and

tests

to
be
made

c

1

7
Check

engine
oIl

Replems
9
or

replace
as

reqUIred

8
Check
the

level
of
the
brake

fluid
m

the
brake

and

clutcJ1
master

cylmder
reservOirs

ReplenISh

as

necessary

ii
t

d

fl

tlJ

l

f

CH
APTER
FIVE

I

f

I
t

p

ENGINE
LUBRICATION
SYSTEM

i

k

i

DESCRIPTION

The
Datsun
L16

engme
uses
a

pressure
feed

011

system
Figure
1
Illustrates
the
flow
of
the

engine
011

Refer
to

Chapter
Two
for
the
re
om

mended

type
of
011
and
the

frequency
that

chang

mg
IS
recommended
LUBRICATION
CIRCUIT

OlliS
drawn
from
the
011

pan
through
the
mlet

screen
and
tube
to
the
mlet
side
of
the
011

pump

011
flows

through
the
outlet

portIon
of
the
011

pump
and
the
011

gallery
to
the
mlet
side
of
the

011
filter
and
then
to
the
maID

gallery
The
mam

CD

N

4
r

I

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

21
G

3
011
pum
p
cover

5
Drive
shaft
pin

8
Driven
gear

9
011
pump
gasket

10
Valve

11
Spring

12
Shim

13
Cap
nut

14
Washer

15
Pump
cover
drive
pin

16
011
pump
to
front
cover

gasket

17
011
pump
bolt

18
011
pump
bolt

19
Plain
washar

20
Lock
washer

21
011
pump
spindle
assembly

22
011
strainer
assembly

23
011
strainer
gasket

24
Lock
washer
spring

25
Hax
bolt
8

18
12

I
T

10
11
14
13

19
I
t
l
o
z
N
0

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

CHAPTER
SIX

ENGINE

Datsun
510
and
521
veJucles
use
the
L16

engme
Over
the

years
the

deSign
remamed

essentIally
the
same
with
nunor

changes
made

to
accommodate
drlIerent
elIDSSlon
control
de

VIces

The
Ll6
IS
a
four
cylmder

overhead
cam

shaft

engme
With
a
97
3
cubic
mch
1595cc

dISplacement
Cylmder
bore
IS
3
2677
in

83mm
stroke
IS
2
9016
m
73
7mm

Output

IS
96

horsepower
1972
mode1s
92
horse

power
at
5
600

rpm
Compression
ratIo
is
8
5

to
1

Equipment
includes
a

single
two
barrel

Hltaclu
carburetor
an
HItachi
alternator
an

HItachi
starter
motor
and
either
a

smgle
point

or
dual

pomt
distnbutor

Figure
1
next

page
IS

an
overall
view

of
the

engme
Figure
2
next

page
is
a
sectIonal
view
The

following

para

graphs
describe
and
illustrate
the

major
com

ponents
of
the

engine
and

provide
detaIled

InStructIons
on
the

removal
disassembly
inspec

tIon

reparr
and

reassembly
of
the

engine

CYLINDER
BLOCK

The

cylmder
block
is
shown
in

Figure
3A

Figure
3B

page
33
IS
an

exploded
view
of
the

block
and
associated

parts
CRANKSHAFI

The
crankshaft
F

JgUre
4A
is
made
of

forged

steel
and
has
a

high
capacity
balance

weight

Figure
4B
shows
the
crankshaft
and

pISton
as

semblies
m
an

exploded
VIew

DA

32

CHAPTER
SIX

CD

CD

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

34

CHAPTER
SIX

Figure
4B
shows
the
crankshaft
and

piston
as

semblIes
m
an

exploded
VIew

PISTONS
AND
CONNECTING
RODS

The

pistons
shown
m

Figure
5
are

cast
alum

mum
With
concave
heads
The

piston
pms
are

hollow
steel
and
are
connected

to
the

pistons
m

a

full

floatmg
fit
Th

piston
pms
are

press
fitted

to
the

connectIng
rods

which
are
made
of

forged

steel

CD

l

o

o

o

CYLINDER
HEAD

The

cylInder
head

Figure
6A

is
an
aluminum

alloy
that

provides
added

coolmg
effiCiency
An

exploded
VIew
of
the

cylInder
head
and
asso

ciated

parts
is

given
in

Figure
6B

page
36

In

take
valve
seats

are
an
alummum
bronze

alloy

while
exhaust

valve
seats

are
cast
iron
All
seats

are
hot

press
fitted
mto
the
alummum

head

0A
CAMSHAFr

Figure
7
shows

the
cast
Iron

camshaft
located

inSide
the

rocker
arm
cover
Four
alummum

alloy
brackets

support
the
camshaft
m
the

cyl

mder
head

CD

VALVE
MECHANISM

Figure
8

page
37

IS
an

exploded
VIew
of
the

valve
camshaft
and

t1mmg
gear
mechanism

The
valve

system
has

pivot
type
rocker

arms

activated

directly
by
the
camshaft
mechanIsm

The
valves
are
fitted
with
dual

spnngs

CAMSHAFI

DRIVE

The
camshaft
IS
dnven

by
a
double

row
roller

cham
from
the
crankshaft
The
camshaft
dnve

mechanIsm
IS
shown
m

Figure
9
The

tensIOn

of
the
cham
IS
controlled

by
a
cham

tensioner

operated
by

spnng
and
oil

pressure
A
rubber

CD

I
Piston
with
pin

2
Piston
nng
set

3
Piston
nng
set

4
Connecting
rod

5
Connecting
rod
bolt

6
Connecting
rod
nut

7
Connecting
rod
bushing

8
Crankshaft

9
011
gallery
plug

10
Bushing

11
Woodruff
key

12
Crank
gear

13
011
pump
gear

14
OJlthrower

15
Pulley
washer

16
Crank
pulley
bolt

17
Crank
pulley
shaft

18
Crank
bushing
set

19
Flywheel
assembly

20
Flywheel
nng
gear

21
Flywheel
to
clutch
dowel

22
Flywheel
bolt
4

23
Converter
pilot

24
Dnve
plate

25
Crankshaft
plate

26
Dnve
plate
bolt
13
I

14

17

15
2
3

l
L
4
8
9
6
19
1
J
21

2
24
8
ICD
I

For
automatic
transmission
W

lit