ad blue DATSUN PICK-UP 1977 Service Manual

Engine
Electrical

System

B

v

W

WR

WL

L2
VOLTAGE
REGULATOR

co

LW

I
P
B

r

FUSIBLE
LINK

m
I
WLI

LW

cJ

I

B

t
EARTH
POINT
m
WR
WR

CHARGE

g
00
WARNING
lAMP

00000

Equipped
with

cooler
I
I
I
I

TjT
m

CLB

W

WB
B
YWR

I
I
I
I

1
W

B

rn

ALTERNATOR
I

l
LW
BW

j
J

M
IG
I

W

BwtIl

IGNITION
SWITCH

COLOR
CODE

B
Black

OW
Black
with

white

stripe

W
White

WB
White
with
black

stripe

WR
White
with
red

stripe

WL
White
with
blue

stripe

LO

Blue
with

black

stripe

LW
Blue
with
white

stripe

Y
Yellow
lOA

C
o
0
0
0

o
0
0
FUSE

BLOCK

M
0
0
0

lOA

Ii

California
models

E
E492

Fig
EE
25
Circuit

diagram
of
charging
lfY
t

m

EE
14

FUSIBLE
LtNK

m
Engine
Electrical

System

E

CJI2t

Bf
o

00

00

fOl

R

BL
I

ti
L

oj

L
C
J

RESISTOR

IGNITION
COIL

COLOR
CODE

B
Black

OW

Black
with
white

stripe

DR
Black
with

red

stripe

aL
Black
with
blue

stripe

W
White
W

R

Wj
BW

BR

IGNITION
SWtTCH

DISTRtBUTOR

jjj

SPARK
PLUGS

EE493

EE
27
Fig
EE
54
Circuit

diagram
of
ignition
ByJt
m
Non

California
models

EARTH
POINT

r

W

b

FUSIBLE

LINK

BATTERY

L
d

l

ilR
j

i

BW
@
c

RESISTOR

COLOR
CODE

8

Black

OW
Black

with
white

stripe

DR

Black
with
red

stripe

W
White

L
Blue

R

Red

G
Green
Engine
Electrical

System

TRANSISTOR
IGNITION

UNIT

IHIIl
II
II

BW

BBV
RG

111
I

I

TERMINAL
BLOCK

r
c

IGNITION
COIL
BW

B

ml
BR

lliJ

LldJ0

IGNITION
SWITCH

EE

29
Fig
EE
56
Circuit

diagram
of
ignition
system
California
models
EE494
a
B

lof1
@

00

00

00

SR

00

00

Et
liiI

in

D1STRliUTOR

10
0

i9

J

SPARK
PLUGS

PROPELLER
SHAFT
DIFFERENTIAL
CARRIER

Watch
for
oil

leakage
from
trans

mission

end

Notes

a
Remove

propeller
shaft
carefully

so
as
not
to

damage

spline
sleeve

yoke
and
rear
oil
seal

b

Plug
up
the

opening
in
the
rear
of

rear
extension

housing
to

prevent

oil
from

flowing
out

To
install

reverse
the

foregoing

removal

procedure

1

Align
propeller
shaft
with
com

panion
flange

using
reference
marks

prescribed
in
removal

procedure
and

assemble
with
bolts

Tightening

torque

2
4

to
3
3

kg
m

17

to
24
ft
Ib

2

Insert
bolts

through
the
holes
of

center

beariug
bracket
and

torque
nuts

to
retain
center

bearing
on
cross

member

Tightening
torque

1
6

to
2
2

kg
m

12
to
16
ft
Ib

DISASSEMBLY
AND

ASSEMBLY

Primarily
do
not
disassemble

pro

peller
shaft
because
it
is

balanced
as
an

assembly

However
check

propeller
shaft

with

journal
for
movement
When

journal
does
not
move

smoothly
dis

assemble

1
Mark

propeller
shaft
and

journal

so
that
the

original
combination
can

be
restored
at
assembly

2
Remove

snap
ring
with
a
standard

screwdriver

3
Lightly

tap
base
of

yoke
with
a

hammer
and
withdraw

bearing
race

See

Figure
PD
4

PDOO5

Fig
PD
4
Remo

i
bearing
Note
When

removing
journal
from

yoke
be
careful
not
to

damage

journal
and

yoke
bole

When

disassembling
and

repairing

center

bearing
are

required
the
follow

ing
procedures
are

applied

1
Put
match
marks
on

flange
and

front

propeller
shaft
Remove
bolts

connecting

flange
yoke
to

companion

flange

2

Applying
Drive
Pinion

Flange

Wrench
ST3lS30000
loosen
off
lock

ing
nut
and

remove
center

bearing
See

Figure
PD
5

P0172
ST31530000

Fig
PD
5
Remouing
locking
nut

To
assemble
reverse
the
foregoing

procedure
using
reference
marks

pre

scribed
in

disassembly
procedure

New

bearing
need
not
be
lubricated

since
it
is

lubricated
for
life
Fill

joint

with
recommended
multi

purpose

grease
whenever

propeller
shaft
is

overhauled

Use
related

snap
rings
of
the
same

thickness
and
be
sure
that

play
is

below
0
02
mm
0
0008
in

Available

snap
ring

Thickness

mm
in
Color

identification

2
00
0
0787

2
02
0
079S

2
Q4
0
0803

2
06
0
08
II

2
08
0
0819

2
10
0
0827

2
12
0
83S

2
14

0
0843
White

Yellow

Red

Green

Blue

Right
Brown

No

paint

Pink

PD

3
Install
and
assemble

components

correctly
so
that

joint
moves
under

friction
resistance
of
less
than
is
o

kg
em

13
in
lb

When
the

above

steps
are
complete

place
the

shaft
in

a

balancing
machine

and

adjust
unbalance
less
than
3S

gr
cm
0
49
in

oz
at
S
800

rpm

Center

bearing
assembling
pro

cedures
are
as
follows

I
Install
center

bearing
in

center

bearing
insulator

2
Install
center

bearing

assembly

and

companion
flange
on
front
shaft

usiug
reference
marks
established
in

disassembly

procedure

3
Install
washer
and

locking
nut
on

front
shaft

and

tighten
nut

using
Drive

Pinion

Flange
Wrench
ST3IS30000
to

specified
torque

Tightening
torque

20
0

to
24
0

kg
m

I4S
to
174
ft
lb

4
Join

companion
flange
of
front

shaft

with

f1ange
yoke
of
rear
shaft

and

tighten
connect
bolts
to

specified

torque

Tightening

torque

2
4

to
3

3

kg
m

17
to
24
ft
Ib

S
Install
center

bearing
bracket

on

center

bearing

INSPECTION

I
Check

journal
pin
for
dent
or

brinell
marks
and

yoke
hole
for

sign

of
wear
or

damage

Snap
ring
bearing
and
seal

ring

should
also
be

inspected
to
see
if
these

are

damaged
worn
or
deformed
Re

place
if

necessary

2
heck
center

bearing

by
rotating

bearing
race
If
it
is

rough
noisy
or

damaged
discard
Cracked

bearing

insulator
cannot
be
tolerated
here

3
Check

propeller
shaft
tube
sur

face
for
dent
or
crack

Change
if

necessary

DESCRIPTION

Cables
are
covered
with
color

coded

vinyl
for

easy
identification
In

the

wiring
diagram
colors
are
indicated

by

one
or

two

alphabetical
letters

It
is
recommended
that
the

battery

be
disconnected
before

performing

any
electrical
service
other
than

bulb

or
fuse

replacement

In
addition
to
fuses
a
fusible
link

has
been

installed
to

protect
wiring

The
fusible
link
functions
almost
the

same
as
a

fuse

though
its
eharac

teristics

are
slightly
different
than

normal
fuses

CABLE
COLORS

Cable
colors
are

indicated

by
one
or

two

alphabetical
letters

B

Black
Be
Brown

G
Green

L
Blue

Lg
Light

green

R

Red
W
White
Y
Yellow

The
main

cable
is

generally
coded

with

a

single
color
The

others
are

coded
with
a

two
tone
color
as

follows

BW

Black
with
white

stripe

gR

Light
green
with
red

stripe

INSPECTION

Inspect
all

electrical

circuits
refer

ring
to

wiring
or

circuit

diagrams

Circuits

should
be

tested
for
conti

nuity
or

short
circuit

with
a

conven

tional
test

lamp
or

low

reading
volt

meter
Before

inspection
of

circuit

ensure
that

I
Each
electrical

component

part
or

cable
is

securely
fastened
to

its
con

nector
or
terminal

2
Each
connection

is

firmly
in

place

and

free
from
rust
and
dirt

3

No
cable

covering
shows

any

evidence
of
cracks

deterioration

or

other

damage

4

Each
terminal

is
at

a
safe

distance

away
from

any
adjacent
metal

parts

5
Each

cable
is
fastened

to
its

proper
connector
or
terminal
Body
Electrical

System

BODY
ELECTRICAL

WIRING

6

Each

grounding
bolt
is

firmly

pbnted

7

Wiring
is

kept
away
from

any

adjacent
parts
with

sharp
edges
or

high

temperature
parts
such

as
exhaust

pipe

8

Wiring
is

kept
away
from

any

rotating
or

working
parts
fan

pulley

fan
belt
etc

9

Cables
between
ftxed

portions

and

moving
parts
are

long
enough
to

withstand
shocks
and

vibratory
forces

Notes

a
Before

starting
to

inspect
and

repair

any
part
of
electrical

system
or

other

parts
which

may
lead
to
a

short
circuit

disconnect
cables
at

battery
terminals
as
follows

Disconnect

cable
at

negative

terminal

and
then
disconnect
cable

at

positive
terminal

Before

connecting
cables
to

battery

terminal
be
sure
to
clean
terminals

with
a

rag
Fasten

cable
at

positive

terminal
and
then

ground
cable

at

negative
terminal

Apply

grease
to

top
of
these

terminals
to

prevent
rust
from

developing
on

them

b
Never

use
a

screwdriver
or
senrice

tool
to
conduct

a

continuity
test

Use
test
leads

c
Never

ground
an

open
circuit
or

circuits
under
no
load
Use

a
test

lamp
12V
3W

or
circuit
tester
as
a

load

FUSE
AND

FUSIBLE

LINK

DESCRIPTION

The
fuse
and
fusible
link

are

protec

tive

devices
used
in

an
electrical
cir

cuit

When
current

increases

beyond

rated

amperage
fusible
metal

melts

and

the

circuit
is

broken

BE
2
MAINTENANCE

INSTRUCTIONS

Fuse

The
fuse

block
is
installed

under

the
instrument

panel
on
the
left

hand

drive

vehicle

BE848A

Fig
BE
1

Fuse
block

When
for
one
reason

or
another

fuse

has
melted
use

systematic
pro

cedure
to
check
and
eliminate
cause
of

problem
before

installing
new
fuse

Notes

a
If
fuse
is

blown
be
sure
to
elimi

nate
cause
of

problem
before
in

stalling
new
fuse

b
Use

fuse
of

specified

rating
Never

use
fuse
of
more
than

specified

rating

Co

Check
condition
of

fuse
holders
If

much

rust
or
dirt
is
found

thereon

clean

metal

parts
with
fine

grained

sandpaper
until

proper
metal
to

metal
contact
is
made

Poor

contact
in

any
fuse
holder
will

often
lead
to

voltage
drop
or

heating
in
the
circuit
and
could

result
in

improper
circuit

operation

Fusible

link

Fusible
link

protects

lighting

starting
charging
and

accessory
cir

cuits

Body
Electrical

System

tive
terminal
or
B

terminal
and
blue

red
wire
terminal
in

wiring
connector

plug

3
To
check

wiper
low

speed
opera

tion
connect
L
terminal
to

ground

with

ground
cable
or
connect
L
termi

nal
to
black
wire
terminal
make
sure

that

wipers
sweep
at
low

speed

4
To
check

wiper

high
speed
opera

tion
connect

ground
cable
to
H
termi

nal
in
the

same
manner
as
in

step
3

make
sure
that

wipers

sweep
fast

5

During
low

speed
operation
con

nect
E
terminal
to

ground
and

conl
ect

P
and
L
terminals
with
lead
wire

as

shown
in

Figure
BE

38
At
this
time

make
sure
that
auto

stop
mechanism

actuates
to

stop
wiper
blade
at
the

specified
position

6

Wiper
is
in

good
condition
if

above
tests
are
made
as

indicated
H
tenninal
Blue
white

o

@

C

BE864A

Fig
BE

38

Wipftrmotor

rt
Cl

Battery
Fusible
link

e
Ignition
witch
Wiper
and
washer

switch

I

D
j
Fuse

box

Y
O
Continuity
test

Remove

wiper
switch
from
vehicle

as
outlined
in

Wiper
Switch

Test

continuity
through
wiper

switch

by

using
test

lamp
or
ohm

meter
WQ5hcr
motor

Wiper
motor

191
LR

y

I
L

I
w

J
Wiper
switch

B

terminal

P
tenninal

L
terminal

E
terminal

H
t
rmjrW

r
21
1

b
I

r
1

I

I

BE865A

Fig
BE

39
Circuit

diagram
of
windshield

wiper
wtUher

sy
te7tl

TERMINAL
I
SlOIT01

POSIl10N

I

I
OFF

2

1
1
2

I

b

ii
4

5

Switch

position

2

I

Z

m
Z
I
I

I
I
I

I
I
10
I
3
2

BE686B

Fig
BE
40
Wi
r

witch

8E

24

m
W

D
to
l
l
0
c
l
l
s
Q
3
For
Automatic

Transmission
LB

B

For
Manual
Transmission

m
For
Automatic
Transmission

COLOR
CODE

B
Black

BI
Brown

G
Green

L
Blue

Lg
Light
green

R
Red

W
White

Y
Yellow

BW
Black
with
white
stripe

LgR
Light
green
with
red
stripe
BY
RB
RB

B
WB
RB

YB
2
RB
I
B

1

BW
r
BY

LB

For
Automatic

Transmission
to

o
c
m
r0

O
O
Dl

For
Manual

Transmission
@
CJ
lti
3

RB
fB

BY
YB
RB@RB
YB
BY

1
To
kickdown
solenoid

fOT
Automatic
Transmission

2
To
reverse
switch

for
Manual
Tranmission

3
To
inhibitor
switch

for
Automatic
Transmission

4
To
oil
pressure
switch

5
To
starter
motor

6
To
engine
room
harness

for
Manual
Transmission

7
To
engine
room
harness

for
Automatic
Transmission

1
I

6

I

BA

RY

i
Air

Conditioning

BW
c
J

BW

n
B

m

00
L
ELECTRIC

FUEL
PUMP

oB

tl

b@

L

t

FROM
LIGHT

SWITCH

c
J

LW
2
L

rRL
fZP
W

I
FUSE
15A

J
D
CJ
B

1
COMPRESSOR
RELAY
B

GL
I

lL

GL1J
ILLUMINATION

CONTROL

RHEOSTAT

3

ILLUMINATION

LAMP

I

I
MAIN
RELAY

FAN
SWITCH

I

r

1

UE
H

I

I
THERMO

SWITCH

COLOR

CODE

@

IC
PRESSU
1

rlTCH

D
D

G
c
J
oc

I
m

f
F
I
C
D

SOLENOID

COMPRESSOR

FUSE
LR

I

BW
O

W

ov
J

I

IG
0

0

OVJ

AC

6
B

BW

L

LW

LR

W

G

GL

RL
Black

Black
with
white

stripe

Blue

Blue
with

white

stripe

Blue
with
red

stripe

White

Green

Green
with

blue

stripe

Red
with
blue

stripe

IG

BW
t
1

n

L

IGNITION
SWITCH

AC727

Fig
A
C
B

Wiring
diagram
of
air
conditioner

system

7
After
the

specified
amount
of

refrigerant
has

been

charged
into

sys

tem
close
manifold

gauge
valves
Then

detach

charging
hoses
from
service

valves
of

system
Be
sure
to
install

valve

cap
to

service
valve

8

Confirm
that
there
are

no
leaks
in

system
by

checking
with
a
leak
detec

tor

Refer
to

Checking
for
Leaks

Note

Conducting
a
performance
test

prior
to

removing
manifold

gauge
is

a

good
sen
ice

operation
Refer
to

Performance

Test

CHECKING
FOR

LEAKS

Conduct
a

leak
test
whenever
leak

age
of
refrigerant
is

suspected
and

when

conducting
service

operations

which
are

accompanied
by
disassembly

Dr

loosening
of

connection
fittings
Air

Conditioning

Refrigerant
is
a

colorless
odorless

gas
and

leakage
from

system
is
diffi

cult
to
detect

Accordingly
the
use

of

a

leak
detector
facilitates

check
for

leaks

Two
methods
of

checking
are

available
one

employs
a
halide

leak

detector
which
burns

propane
gas
or

butane

gas
and
the
other

is
an
electric

type
leak

detector

HALIDE
LEAK
DETECTOR

Since
the

propane
leak
detector
and

butane
leak
detector

are
the

same
in

respect
to
their

operation
this

section

describes
the

operation
of
the

propane

leak
detector

The

copper
screen
is
heated

by
the

burning
of

propane
Refrigerant
gas

decomposes
to

color
the
flame
when

it

contacts
the
heated
screen
The

gas
to

be
checked
is
drawn
into

the

sampling

tube

and
sent
out
to
the
burner
A

refrigerant
leak
can

clearly
be
detected

by
variations
in
the
color
of
the
flame

Propane
type

NO
LEAK

SMALL

LEAK

LARGE
LEAK
Greenish

blue

Yellow

Purple
AC010
1

Copper
reaction

plate

2

Flame

adjusting
lines

3

Burner

4

Sampling
tube

5

Strainer

6

Gas
bomb

7
Flame

adjuster

Fig
A
C
25

Checking
for
leak

Butane

type

Pale
blue

Bright
blue

Vivid

green

AC
15
I

Discharge

refrigerant
in

one
or

two
seconds
to
ascertain

that

system

has
a

sufficient

pressure
needed
for

leak
detection

Charge
with
04

kg
I

lb
of

refrigerant
if

necessary

2

Light
leak
detector

Adjust
the

height
of

the
ilame
between

flame

adjusting
lines
at
the

top
and
bottom

of
combustion

tube
A

reaction

plate

will

immediately
become
red

hot

3

Place
the
end

of

sampling
tube

near
the

point
of
the

suspected
leak

in

system

Notes

a
Since

refrigerant
gas
is
heavier
than

air

small
leaks
can
b

easily
detect

ed

by

placing
sampling
tube
direct

ly
below
the
check

point

b
Suitable
ventilation
is

required
If

refrigerant

gas
is

mixed
with
the

surrounding
air
leak
detector
will

always
indicate
a

response
and

detection
of
the
actual
leak
will
be

difficult

c

Never
bold
leak
detector
at
an

angle

Cautions

a
Never

inhale
the
fumes

produced

by
combustion
of

refrigerant
gas

since

they
are
toxic

b
Never
use
halide
torch
in
a

place

where
combustible
or

explosive

gas

is

present

4
The

ilame
will
be
almost

colorless

when
there
is

no

refrigerant
gas
being

burned
When
there
is

a
small

refriger

ant

gas
leak
the
ilame

will
be

green
or

yellowgreen
When

refrigerant

gas
leak

age
is

large
the
ilame
will
be
brilliant

blue
or

purple
Since
the
color
of
the

ilame
will
be

yellow
when
dust
is

being
burned
Or
there
is

aging
scale
on

copper
reaction

plate
always
keep
the

strainer
of

sampling
tube
and
reaction

plate
clean

5

Major
check

points

I
Compressor

Compressor
shaft
seal

rotate
the

compressor
by
hand

Oil
filler

plug

Flexible
hose
connections

Rear
cover
and
side
cover

gaskets

Service
valve

2
Condenser

Condenser

pipe
fitting

Condenser
inlet
and
outlet

pipe

connections

I

Air

Conditioning

BLOWER
MOTOR
DIAGNOSES

Blower
motor

inoperative

Check
fuse

In
fuse
block

15A
W

Single
fuse
15A
at

cooling
unit

I

j

If
OK

Check
the

continuity
and

fitting
of
fan
switch

I

I

If
OK

I

I

Connect
fan
switch
to

wiring
harness

2

Turn
the

ignition
switch
ON
IG

3
Set
fan
switch
at
ON
1
2
or
3

position

Check
the

voltage
for
blower
motor

Blue
lead
wire
is

poweI
source

Blue
wire

with
white

stripe
is

for

grounding

I

I
Voltage

I

I

Check
the

continuity
and

fitting
of
resistance
on

cooling
unit

I

I
If
OK
If

damaged

I
I

Replace
blower
motor
Replace
resistance

AC

24
mown
fuse

Replace
fuse

j

If

damaged

I

I

Replace
fan
switch

No

voltage

Replace
main
relay