1968 DATSUN 510 belt

10
9
8
n
o
o

19
1
Water
pump
assembly
11
lock
washer

2
Water
pump
body
12
Hex
bolt

3
Water
pump
ane
13
Hex
bolt
With
lock
washer

4
Water
pump
seal
14
loc
l
washer

17
6
5
Water
pump
beanng
15
Fan
and
water
pump
pulley

6
Water
pump
bee
ring
lock
16
Cooling
tan

7
Water
pump
hub
17
Fan
and
water
pump
lock

8
Water
pump
seat
washer

9
Water
pump
gasket
18
Hex
bolt

10
Hex
bolt
19
Fen
belt
I
I

98

CHAPTER
NINE

CHARGING
CIRCUIT

Figure
23
IS
a
schematIc

dIagram
of
the

charg

Ing
CIrcuIt
whIch

mcludes
the

battery
alter

nator

voltage

regulator
and
assocIated

wumg

f

08
ALTERNATOR

Figures
24
and
25

page
100

proVIde
ex

ploded
VIews
of
the
alternator

and
the
relatIve

locatIon
of
all

parts
In
an
alternator
the

mag

netic

pole
turns
and
the

armature
IS
fixed
The

magnetIc
field

IS
Induced

by
the
rotor
wh1ch

consists
of
alternator

shaft
field
coIl

pole
pIeces

and

slIp

nngs
The

slIp
rmg
pressed
In
the
shaft

conducts

only
a
small
field
current

Output
cur

rent
is

generated
In
the
armature
COIls
located

In

the

stator
The
stator
has
three

wIndmgs
and

generates
three

phoase
alternatIng
current
Six

dIodes
are
Installed

mto
a
heat

SInk

They
rectIfy

alternator

output
to
direct

current
for
use

by
all

electrIcal

systems
in
the

vehicle

Removal

1
DIsconnect
the

negatIve
battery
terrmnal

2
Remove

two
nuts

holdIng
electnc
leads

to

back

of
alternator
and
remove
the

Wire
leads

3

Unplug
the
electrIc
connector
from
the

back

of
the
alternator

4
Loosen

the

adJustlng
bolt
and
the

mounting

bolt

holdIng
the
alternator
In

positIon

@

r

I

I

I

L

Alternator
5
Remove

the
alternator
dnve
belt
from
the

alternator

pulley

6
Remove
the
bolts

holdmg
the
alternator

7
Remove
the

alternator
from
the
veh1cle

Disassembly

1
Unscrew
and

remove
the

through
bolts
as

shown

m

Figure
26

@

2

Separate
the
dIOde
end

housmg
from
the
dnve

end

hOUSIng
assembly
by
hlttmg
the
front

bracket

lIghtly
WIth

a
wooden
hatnnler
See

Fig

ure27

3

Usmg
SO
t

Jaws
on
a
VIse

place
the
dnve
end

housmg
m
the
VIse
and

remove
the

pulley
nut
as

shown
m

Figure
28

Cl

E

C

c5

i
u

5

o
l

co
c

c

0

1
T

Battery

r

r

L

J

Voltage

regulator

27
10
13
49

j
l

e
1
1

31
33
22

@
@
25

f
1
d

37
36
6

40
ell
o
z
o
o
t

1
Hose
clamp

3
Hose
clamp

4
Connector
pipe

5
Hose
connector

7
Air
pump
With
pulley

8
Air
pump
silencer
assembly

9
Air
pump
pulley

10
Bolt

13
Spring
washer

14
Check
al
e
assembly

15
Anti
backfire
alve

16
Connector
tube

20
Air
gallery
pipe

22
Air
pump
bracket

23
Hex
bolt

25
Spring
washer

27
Adjusting
bar

31
Air
pump
bolt

33
Spring
washer

36
Plain
washer

37
Hex
nut

39
Air
cleaner
to
all
pump
hose

40
All
pump
to
control
al
e
hose

41
Air
pump
to
anti
backfire
val
e

hose

42
Anti
backfire
al
e
hose

44
Hose
clam
p

46
Hose
clam
p

47
Hose
clamp

49
Air
pum
p
belt

50
Rocker
co
er
to
air
cleaner
hose
VI

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

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