DATSUN 510 1968 Service Repair Manual

1
Hose
clemp

3
Hose
clamp

4
Connector
pipe

5
Hose
connector

6
Control
valve

7
Air
pump
with
pulley

9
Air
pump
pulley

11
Bolt

13
Spnng
washer

14
Check
valve

15
Antl
beckllre
elve

17
Connector
tube

19
Hose
c1emp

20
Air
gellery
pipe

22
Air
pum
p
bracket

24
Hex
bolt

26
Spring
washer

27
Adjusting
bar

28
Hex
bolt

29
Spnng
lock
washer

30
Hex
bolt

31
Air
pump
bolt

39
Air
c1eener
to
air
pump

hose

40
Air
pump
to
control

alve
hose

41
Air
pump
to
anti

beckllre
velve
hose

43
Antl
backllre
valve
to

connector
hose

45
Hose
clemp

46
Hose
clemp

48
Hose
c1emp

49
Air
pump
belt

50
Rocker
cover
to
alf

clBllner
hosa

51
Hose
band

54
Velve
1I0w
guide

55
Flow
gulda
valve

brackBt

56
Eveporatlve
control

tube
57
Evaporative
control

tube

58
Eveporatlve
control

tube

59
Hose
clamp
60
Screw

61
Spring
washer

62
Screw

63
Spring
washer

64
Main
breather
tube

50
15
i

EMISSION

CONTROL
SYSTEM
117

ENGINE
EMISSION
CONTROL
COMPONENTS

CD

1
Relief
valve

2
Air

pump

3
Check

valve

4
Anti
backfire

valve

AIR
INJECTION
SYSTEM

CD

SILENCER

CHECK
VALVE

NOZZLE

c

0
COO
lL
0

W
GOtl
WITH
M
tlUA
TRt
tlSMISSIOtl

IGNlilON
E

TiE
1

B

v
r

NElli
AI
GEA
SWI1
CH

Cl
lliCH
PEDAl
1
ANSt
ISSION

CA
BllREiO
G

1
0
OIS1
IBll1
O

IGNlilON
COIl

OllAI
POINi

0lSiRI6lliOR
AO
l
ANCED

B
EA
E

REiA
OEO

r
R

SWI1
CH
AI
ACCEI
E
AiOR
PEDAl

S
Nl1C
DETEcTIOG
IDE
ll
E
T
lRO
rrLE
OS
O
1

C
cTI
O
CLOSE
RO
rrLEI
OS
O
l
t

EMISSION
CONTROL
S
IS
TEM
SEDAN
AND
SlATION

YfAGON
Yfl
tH
AUTOMATIC
TRANSMISSION
TO
DISTRIBUTOR

IGNITION
COIL

IGNITION
SWITCH

tnE
RETARDED
BREAKER
POINT
1

SPEED
SWITCH
THROTTLE
SWITCH
SWITCH
DETECTING
WIDE
OPEN

THROTTLE
POSITION

SWITCH
DETECTING
CLOSE

THROTTLE
POS
iION
Q
Z
S

e
l

8

EtAISS
ON
CON1tt
o
SYStEtA
OrEft
A1ION
l
fflOM
C
fI
3UflEiOfl

11
1
CLE
NI
R

fROM
fUEL
i
N
lC

fLOW
GUIOE
L
E

1M
Jahre
opens

Vlhen
the
pressure

IS
o
Jer
0
4
In
t
g
fUEL
i
N
lC

s

EMISSION
CONTROL
SYSTEM

121

CD

FLAME
ARRESTER

CRANK
CASE

VENTILATION
CONTROL
VALVE

WIll
be
heard
1f
the
valve
IS

workIng
Place
a

finger
over
the
valve
mlet
as
shown
In

Figure
9

A

strong
vacuum
should
be
felt
If
the
valve
IS

not

operatmg
properly
replace
It
Do
not
at

tempt
to
clean
It

3
Check
the
ventilator
hose
for
obstructIons

and
cracks
Clean
with
solvent

or

replace
as

reqwred

AIR
INJECTION
SYSTEM

Check
Valve

ThIS
test
can
be

performed
at
the
same
tIme

as
the
air

pump
test
OIL
SEPARATOR

1

122

CHAPTER
TEN

1
Start
the

engIne
and

bnng
It

up
to
normal

operatIng
temperature

2

Inspect
all
hoses
and
connectIons
for
leaks

and
detenoratIon
Shut
off
the

engme
Replace

any
defectIve
hoses

3
Remove
the
hose
attached
to
the
check

valve

4

VIsually
Inspect
the

posItIon
of
the
valve

plate
InsIde
the

valve

body
See

Figure
10
It

should

be

lIghtly
posItIoned
agaInst
the

valve

seat

away
from
the
aIr
dlstnbutor
manifold

5
Insert
a

probe
Into
the
valve
connectIon
on

the
check
valve

Depress
the
valve

plate
It

should
return

freely
agaInst
the
valve
seat
when

released

6
Leave
the
hose
dISconnected
and
start
the

engme

7

Slowly
Increase

engine
speed
to
1
500

rpm

Watch
for
exhaust

gas
leakage
at
the
check

valve
There
should

not
be

any
The
valve

may

flutter

or
VIbrate
at
Idle

speeds
ThIS
IS
normal

Replace
the
valve
u

defecuve

Anti
Backfire
Valve

1
Start
the

engme
and

bnng
to

operating

temperature

2

Inspect
all
hoses
and
hose
connectIons
for

leaks
and
detenoratIon

Replace
as

required

3
DIsconnect
the
hose
at
the
antI
backfire

valve

leading
to
the
Intake

manuold
Insert
a

plug
ill

the

hose
and
fasten

securely

4

Open
and
close
the
throttle
valve

rapidly
See

Figure
11
Place
a

finger
over
the
valve
outlet
to

the

m
take
manuold
If

arr
flow
IS
felt
for

one
to
two
seconds
the
valve
IS

functIonIng

properly

If
there
s
no
aIr
or
If
the
flow
is
felt
for
more

than
two
seconds
the
valve
IS
defectIve
and
must

be

replaced

5
Connect
the
alr
hose
to
the
mtake
manuold

after

remOVIng
the

plug

6
DIsconnect
the
aIr
mlet
hose
from
the
air

pump
at
the
antI
backfire
valve
If
the

engine

Idle

speed
changes
excessIvely
the
valve
is
de

fectIve
and
must
be

replaced

Air

Pump

1
Check
the
atr

InjectIon
pump
belt
tension

DeflectIon
of
the
belt
should
be
0
5
In
when

pushed
In

by
thumb

pressure
Adjust
belt
u

necessary

2

Operate
the

engme
untIl
normal

temperature

IS
reached

3

Inspect
all
hoses
hose

connectIons
and
the

arr

gallery
for

SIgnS
of

leaks
or
detenoratIon

Replace
as

required

4
DIsconnect
the
air

supply
hose
at
the
check

valve

5
Insert
the

open
pipe
end
of
a

pressure
test

gauge
adapter
Into
the
air

supply
hose
See

Fig

ure
12

Clamp
the

adapter
firmly
to
the
hose

Install
the

pressure
test

gauge
to

the

adapter

PosItIon
the

adapter
and
test

gauge
so
that
the

alr
blast
emitted

through
the
dnlled

pipe
plug

Will
be

harmlessly

dislppated

6
Install
a
tachometer

on
the

engme
WIth
the

engIne
speed
set
to

1
500

rpm
observe
the

pres

sure

readmg
AIr

pressure
should
be
0
47
m

Hg

16mm
Hg

EMISSION
CONTROL
SYSTEM
123

7
If
the

pressure
does
not
meet

reqwrements

dISconnect
the

aIr

supply
hose
to
the
antI

backfire
valve

Clamp
a

plug
mto
the
hose
and

repeat
the

pressure
test

8
If
the
air

mJection
pump
does
not
meet
the

pressure
specIfication
It
should
be

replaced

NOTE

Repair
of
the
air

injection

pump
is

possible
but
have
the

lob

done

by
your
dealer

9
Close
the
hole
of
the
test

gauge
by
finger
With

the

engme
runnmg
at
1
500

rpm
See

Figure
13

If
a

leakIng
sound
is
heard

or

leakIng
air
is
felt

at
the
relIef
valve
the
relIef
valve

IS
defectIve

RepaIr
or

replace
as

reqUIred
ENGINE
MODIFICATIONS
SYSTEM

Testlng
and
mamtenance
of
the
sWitches

relays
and
solenOIds

comprismg
the

engine

modIficatIons

reqwres
SpecIal
knowledge
and

test

eqUIpment
If
the
mechanic

suspects
that

troubles
eXist
In
these

parts
check
With

a
dealer

Mamtenance
of
the
dIstrIbutor
breaker

points

and

tImmg
of

engines
is
covered

m

Chapter

Four

EVAPORATIVE
EMISSION

y
CONTROL
SYSTEM

f

Detailed
informatIon

on
the
fuel

tank
and

connecting
fuel
lines

IS

given
In

Chapter
Seven

EXHAUST

SYSTEM

Figures
14
next

page
15

page
125
and
16

page
126

are

exploded
VIews
of
the
exhaust

systems
Figure
14

applIes
to
the
sedan

FIgure

15

to
the

wagon
and

FIgure
16
to
the

pIck
up

The

system
in
sedans
and

wagons
consists
of

the
front
tube

pre
muffier
center
tube
rear

tube
mam
muffier
and
tail

pipe
The

pick

up

exhaust

system
mcludes
the
front
tube
muffier

and
rear
tube

Removal
Sedan
and

Wagon

1
Loosen

clamps
at
the
front
tube
center
tube

and
mam
muffier
connectIons
See

Figure
17

2
DIsconnect
front
tube
and
exhaust

manifold

flange
connection

3
Remove
units
from

vehicle

2
@

24

11
3

10
9
r

7
8

JI
4
J

c
U
12
24
22
19
18
@

20
ta

21
1
frontBxhaust
tube

2
Exheust
gasket

3
Plein
wesher

4
Spnng
wesher

5
fixing
nut

6
Center
exhaust
tube

7
Exhaust
tube
U
bolt
clamp

8
Exhaust
tube
U
bolt
clamp

9
Spring
wesher

10
Hex
nut

11
Reer
exheusttube

12
Exhaust
rubber

13
Plain
washer

14
Lock
washer

15
Spnng
washer

16
Hex
bolt

17
Muffler
essembly

18
Exhaust
tube
U
bolt
clamp

19
Exhaust
tube
U
bolt
clamp

20
spring
wesher

21
Hex
nut

22
Rear
mount
bracket

23
Rear
mount
brecket

24
Rubber
henger
i

22
rnL
T
II

19

2
16

rr

I
II
l
r
@

1
Front
exhaust
tube

2
Exhaust
tube
clamp
assembly

3
Exhaust
tube
clemp
assembly

4
Muffler
clamp

5
1
Front
lower
hook

5
2
Front
lower
hook

5
3
Hex
bolt

5
4
Hex
nut

5
5
Lockwasher

5
6
Extenor
mounting
rubber

Insulator

5
7
Extenor
mounting
rubber

Insulator

5
8
Extenor
mounting
shim

5
9
Extenor
mounting
shim

10
U
bolt

11
Clamp
plate

12
Hex
bolt

13
Hex
nut

14
Plain
washer

15
lockwasher

16
Rubber
hanger

17
Hanger
strap

18
lock
plate

19
Hex
bolt

20
Hex
nut

21
lockwasher

22
Exhaust
gasket

23
Hex
nut

24
Plain
washer

25
lockwasher

26
Muffler
kit
l
o

o
t
I
N
III