1977 DATSUN PICK-UP lock

Body
Electrical

System

WINDSHIELD
WIPER
AND
WASHER

REMOVAL
AND
INSTALLATION

Wiper
linkage

I

Remove
wiper
blade
and

arm

assembly
from

pivot

2
Remove
cowl

top
grille
See
Sec

tion
BF

3
Remove
two

flange
nuts

retaining

pivot
wiper
linka
e

to
cowl

top

4
Remove

stop
ring
that
retains

connecting
rod
to

wiper
motor
arm

5
Remove

wiper
motor

linkage
as

sembly

6
Install

wiper
motor

linkage
in
the

reverse

sequence
of
removal

Fig
BE
34

Removing
wiper
linkage

7
Install

wiper
arm
and
blade

assembly
in

correct

sweeping
angle

See

Figure
BE
35
for
correct

installing

dimensions

JC

I

i
25
mm
0

984
in
r

BE862A

Fig
BE
35

Wip
J

arm
irutallation
1

Windshield

wiper
blade

2
Windihield

wiper
arm

3

Wiper
motor

4

Wiper
motor
bracket

5

Connecting
rod

6
Pivot

BE685B

Fig
BE
33
Wind
hield

wiper

Wiper
motor

I
Remove

cowl

top
grille

3
Remove

stop
ring
that
connects

wiper
motor
arm
to

connecting
rod

3
From
under

instrument

panel

disconnect

wiper
motor
harness
at

connector
on

wiper
motor

body

4

Remove
three

retaining
screws

and

pull
out

wiper
motor
forward

5
Install

wiper
motor
in

the
reverse

sequence
of
removal

Fig
BE

36

Wiper
and
washer
switch

1
Press
in
switch
knob
turn
it

counterclockwise
and

pull
it
out
of

switch

2
Unscrew
escutcheon
and
remove

escutcheon
and

spacer

3
Reach

up
from
underneath
instru

ment

panel
disconnect

wiper
switch

multiple
connector
from
instrument

harness

wiring
assembly
and
remove

spacer
and
switch

4
Install

new
switch
in

the
reverse

sequence
of
removal

BE

23
Washer

pump

The
washer

pump
and
washer
fluid

tank
are

integral

parts
and
are
serviced

as
an

assembly

Caution
for
windshield
waBher

operation

I
Be
sure
to
use

only

washing
solu

tion

Never

use
mix

powder
soap
or

detergent
with
solution

2
Do

not

operate
windshield
washer

continuously
more
than
30

seconds
or

without
washer
fluid
This
often

causes

improper
windshield
washer

operation
Normally
windshield
wash

er
should
be

operated
10

seconds
or

less
at
one
time

I

Disconnect
two
washer

pump

lead
wires

at
connectors

2
Remove

hose
from
washer

pump

and
drain

washer
fluid

3

Pull
out
washer
tank
and
motor

assembly
from
tank
bracket

4
Install
washer
tank

and
motor

assembly
in
the

reverse

sequence
of

removal

Washer
nozzele

Access
for
washer
nozzle
removal
is

obtained

by
disconnecting
vinyl
tube

and

removing
washer
nozzle

retaining

screw
from
cowl

top

When
washer
nozzle
is
installed
or

when
washer
fluid
is

not

sprayed

properly
adjust
nozzle
direction
by

bending
nozzle
tube
so
that
washer

fluid
is

sprayed
in

range
indicated
in

Figure
BE
37

450
450

j217
72

r

l
1772

Ii
L

1

00
Li
L

J

270

1

to
63
3
94

1

Unit
nun

in

BE863A

Fif
BE

37
Waaher
nozzle

adjuatment

INSPECTION

Wiper
motor

I

Disconnect

wiring
connector

from

wiper
motor

2

Connect
test
lead
between
B
ter

minal
on
motor
ide
and

battery
posi

RADIO

REMOVAL
AND

INSTALLATION

Radio

Removal

Pull
radio
knobs
offradio
control

shafts
Body
Electrical

System

2
Remove
radio

holding
nuts
and

washer
from
radio

control
shafts

3
Remove
radio

bezel
from
the

front

of
radio

4

From
under
instrument

panel

disconnect
antenna
cable
and
lead

wires

power
lead
and

speaker
lead

5

Remove
radio

from
instrument

panel

Installation

Fr
m
behind
instrument

panel

position
radio

to
instrument

panel

2
Install
radio
bezel
to
the

front
of

radio

3
Install
washers
and
nuts
on

radio

control
shafts
and

tighten
them
secure

ly
Then
install
control
knobs

4
Connect
antenna
cable
and
lead

wires

power
lead
and

speaker
lead

Antenna
and

antenna
cable

Removal

From
behind
instrument

panel

disconnect
antenna
cable
at
conne
tor

2
Remove

plug
on
antenna
base
and

remove
antenna
base

retaining
screw

3
Remove

antenna
and
cable
as

sembly
from
fr
ont

pillar

4
Unscrew
antenna

clip
from
front

pillar
if

necessary
aE323

Fig
BE

41
Radio

Installation

Remove
rubber

plugs
that
cover

antenna

mounting
opening
in
front

pillar
when

installing
radio
antenna

on
vehicle
that
is
not

equipped
with

radio

2
Thread

mounting
stud
of
antenna

clip
into

upper
antenna

mountins

opening

3
Insert

antenna
cable
into

lower

antenna

mounting
opening
and

place

ant
nna

base
in

position

4

Install
antenna
base

retaining

screw

5
Route
antenna
cable

along
upper

dash

panel
to
radio

6

Connect
antenna
cable
at
con

nector

BE
25
t

BEB67
A

Fig
BE
42
Radio
ant

nna

ADJUSTMENT

Antenna
trimmer

When
a
new

radio
receiver
antenna

or
antenna
feeder
is
installed
antenna

trimmer

should
be

adjusted

Extend
antenna

completely

2
Tune
in
the

weakest
station
be

tween
12
and
16
1

200
to
1
600KC

on
dial

Noise

may
be

generated
but
dis

regard
it

3
Turn

antenna
trimmer
to

right

and
left

slowly
and
set
it
at
a

position

where

receiving
sensitivity
is

highest

SE133

Fig
BE
43

Adjwting
antenna
trimmer

CLOCK

REMOVAL

Remove

battery

ground
cable

2
Remove
cluster
lid

following

instructions
in

steps
I

to
4

of
Removal

in

Combination
Meter

3

Disconnect
three
wire
connectors

of
clock
from
combination
meter

printed
circuit

and
instrument
harnes

wiring

4
Remove
three
s
rews
and
remove

clock
from
cluster
lid

INSTALLATION

I
Position
clock
to

cluster
lid
and

install
three
screws

2

Connect
three
wire
connectors
of

clock

to
each
connection
two
to

combination
meter

printed
circuit
one

to
instrument
h
ness

wiring

3

Install
cluster
lid
to
instrument

panel

4

Connect
battery

ground
cable

HEATER

DESCRIPTION

@
Body
Electrical

System

Fig
BE
44
Clock

1
Defroster
nozzle
L
U

2
Deflor
tcr
duct
L
R

3
Heater

control

4

Resistor

5
Heater
motor

6
Heater
case
7
Ventilator
knob

8
Heater
core

9
Conuol
cable

clip

10
Heater
cock

11
Defroster

duct
R
H

12
Defroster
nozzle
R
H

BE687B

Fig
BE
45
Heater
comtruction

BE

26

TEMP
lever

1

Move
TEMP
lever
to
the

OFF

position

2
Connect
control
cable
to
the
lever

of
water
ock
when

water
cock
lever
is

pulled
forward

fully
closed

3
Install
control
cable
on
water

cock
bracket
with
cable

retaining
clip

SPECIFICATIONS

Item

FAN
MOTOR

Rated

power
consumption

Revolution

rpm

Fan
dia
mm
in

TACHOMETER

The
tachometer
is

optional
on

model
HL620
It
is
an

integral
part
of

the

ignition
system
It
counts
the

pulses
entering
the

ignition
coil
and

indicates
the

number
of

engine
revolu

tions

REPLACEMENT

I

Remove

battery
ground
cable

2

Remve
cluster
lid

following

instructions
iri

steps
I
to
4
of
Removal

in

Combination
Meter
Body
Electrical

System

BE872A

Fig
BE

52
Water
cock

General
use
Extremely
cold

weather

use
2
RG
The
red

with

green

stripe
lead

wire

must
be

connected
to

flat

plate
terminal
at
back
of

combination
meter

3
B

The
black
lead

wire
must
be

connected

to
T

shaped
ter

minal
at
back
of

combination

meter

4

YR

The

yellow
with

red

stripe

lead
wire
must

be
connected

to

pole
terminal
at
back
of

combination
meter

6
Pass

tachllmeter
wires

through

grommet
on
hood
lock
control
wire

and
connect
to

negative
terminal
of

ignition
coil

Notes

a

Fix

grommet
with
an
adhesive

tape

or
a

sealing
compound
to

prevent

water

leakage

b
Attach
tachometer
wires
to
hood

lock

control
wire
with
an
adhesive

tape

BULB
REPLACEMENT

I
Remove
tachometer
as

previously

described

2

Twist
illumination
bulh
socket
at

back
of
tachometer
Bulb
with
socket

can
then
be

easily
removed

3

Remove
bulb

4

Install
new
bulb
in

reverse
se

quence
of
removal

Bulb

wattage

Tachometer
illumination

lamp
3
4W
12V

less
than
36W

3

600

110
433
12V

less
than
SSW

2

SOO

110
4
33

3
Disconnect

four
tachometer
lead

wire
connectors

They
are
connected

to

combination
meter
and
tachometer

cable

4

Remove
three

screws
and
then

remove
tachometer
from

cluster
lid

5

Install
in
reverse

sequence
of
re

moval
When

connecting
lead
wire

note

the

following

1
BW
The
black
with
white

striped

lead
wire

must
be
connected

to

identically
colored
ta

chometer

cable

coming
from

engine

compartment

BE

30
BE965

Fig
BE
53

Tachometer

CD
m
Cl
@
D
@

I

j

1
To
instrument
harness
IS
To
battery
30
To
check
connector

2
To
full
transistor
amplifier
16
To
fusible
link
3t
To
headlamp
L
U
type
2

California
models
only
17
To
engine
harness
No
2
32
To
sido
marker
lamp
L
B

3
To
hood
switch
18
To
alternator
33
To
front
combination
lamp
L
H

4
To
engine
compartment
lamp
1
9
To
front
combination
lamp
R
n
34
To
horn
Low

ll
l
S
To
washer
motor
20
To
headlamp
R
H
type
2
3S
To
horn
High

l
l
0
6
To
auto
choke
heater
relay
1
To
side
marker
lamp
R
n
36
To
B
C
D
D
cut
olenoid
California
models

7
To
detector
dri
e
counter
22
To
headlamp
R
B
type
1
only

Non
Califunia
model
except
for
Canada
23
To
ground
37
To
block
tcrminal
distributor
California

8
To
ignition
relay
California
models
only
i4
To
thermal
transmitter
models
only

9
To
floor
sensor
relay
California
modeb
only
is
To
distributor
Non
California
models
only
38
To
ignition
coil
Non
California
models
only

n
10
To
inhibitor
relay
A
T
only
26
To
8
C
D
D
cut
solenoid
Non
California
39
To
condenser

t
II
To
head
lamp
relay
models
only
40
To
ignition
coil
and
resistor
@

12
To
horn
relay
27
To
fuel
cut
solenoid
California
models
only

OJ
v

m
13
To
voltage
regulator
28
To
auto
choke
heater

g
e
14
To
cooler
cable
29
To
headlamp
L
R
type
1

OJ
to

o
Q
m
r0

C
1
i

Ql
CIl
Il
l
3

m
J
c
@
@
r

1
I
I

I
II

U
j
J

r
U

I
IT

L
U
L
L

@

Qj
flll
I

1

I
I

1

lL

to
t
l

Q
1
To
room
Jamp
cable

2
To
light
switch

3
To
fuse

4
To
tachometer
or
clock

5
To
hazard
flasher
unit

6
To
stop
lamp
switch

7
To
ignition
switch

8
To
hazard
switch

9
To
tU
and
dimmer
switch

10
To
check
connector

11
To
AMP
M
T
only

11
To
combination
instrument

Non
California
mode15
except
for
Canada

13
To
combination
meter

14
To
flasher
unit

IS
To
kickdown
switch
AfT
only

16
To
hand
brake
switch

17
To
heater
motor

18
To
illumination
control
rheostat
19
To
wiper
switch
light
switch
illumination

lamp

20
To
wiper
switch

21
To
cigar
lighter

22
To
heater
control
illumination
lamp

23
To
radio

24
To
heater
control

25
To
belt
and
E
G
R
warning
lamp

Non
California
models
or
floor
te
peratuJe

California
models

26
To
heater
control
illumination
lamp

27
To
buzzer

28
To
belt
warning
timer
U
S
A
Olodels

29
To
indicator
lamp
AfT
only

30
To
cooler
harness

31
To
wiptr
motor

32
To
door
switch
R
H

33
To
engine
compartment
harness

34
To
floor
harness

E
m

S
@
o
J
o

Q
m
CD
n

Ql
en
I
i
3

Water
in
the

system
will

ice
the

orifice
when
the

high
pressure
re

frigerant
is

changed
to
low

pressure

refrigerant
by

expansion
valve
etc

and
will
obstruct
the

refrigerant

flow

The

following
items

are

general

instructions
to
be

closely
observed
in

servicing
the

system

I
When
a

system
line
is

discon

nected

plug
the

opening
immediately

This
is

especially
necessary
to

prevent

moisture

condensation
from

forming

in
the
line
and
to

keep
out
dirt
and

dust
It
is
also

necessary
to

keep
the

line
at
and
above

surrounding
air

temperatures
at
all

times
When

con

necting
system
lines
do

not

attempt

to
remove
the

plug
from
the

opening

until

ready
for
immediate
use

2

Always
keep
the

working
place

clean
and

dry
and
free
from
dirt
and

dust

Wipe
water
off
with
a
clean

cloth

3
Have
all

necessary
tools
in

pre

paration
beforehand

and
have

tools

clean
and

dry

4
The

compressor
oil
will

easily

absorb
moisture
when

exposed
to
air

Immediateiy
close
the

opening
of
the

container
after
use
It
is
also

necessary

to
observe
the

following
notes

Notes

a
The
oil
should
not
be
transfused

from
a
container
into

another
as

the
failure

will

possibly
cause
mois

ture
to
mix

with
the
oil

b
The

used
oil
should
not
be

returned

into
a
container

c

The
oil

should
not

be
used
if
its

state
of

preservation
is

not
clear

enough

5
When

connecting
or

disconnect

ing
pipes
from
the

refrigeration
sys

tem
use
two

wrenches
One
wrench
is

used
for

holding
the

fixing
nut

in

place

while
the

other
for

turning
the

mating

flare

nut
Failure
to
do

so

may
result

in
a

twisted
tube
or

may
damage

connection

6
Also
use
care
not
to

give
scratches

to
the

seating
surface
at
connections

A

small
scratch
on

the

seating
surface
Air

Conditioning

may
be
the
cause
of

gas
leakage

Before

connecting
pipes
be
sure
to

give
coating
of

compressor
oil
to
the

sea

ting
surfaces

SAFETY

PRECAUTIONS

I

Since
direct

contact
of
the

liquid

refrigerant
with

your
skin
will
cause

frostbite

always
be
careful

when

handling
the

refrigerant
Wear

gloves

or

wrap
a

piece
of
cloth
around
service

valve

to

protect
your
fingers
against

frostbite

by

refrigerant
If

any
of
the

refrigerant
should

get
into

your
eyes

when

charging
the

refrigerant
splash

your
eyes
with

cool
water
to
raise

the

temperature
gradually
Apply
a

protec

tive

film
to

the

eye
to

avoid
infection

Do
not
rub

your
eyes
Consult
an

eye

specialist
Always
wear

goggles
or

glasses
to

protect
your
eyes
when

working
around
the

system
Should

refrigerant
strikes

your
body
splash

on
cool
water
and

apply
a

protective

film

2
The

refrigerant
service
container

has
a

safe

strength
However
if
han

dled

incorrectiy
it
wili

explode

Therefore

always
follow
the
instruc

tions
on
the

label
In

particular
never

stpre
it
in

a
hot

location
above

S20C

l250F
or

drop
it
from

a

high

height

3
The

refrigerant
gas
is

odorless
and

colorless
and

breathing
may
become

difficult

due
to
the

lack
of

oxygen

Since
the

refrigerant
gas
is

heavier
than

air
and

will

lay
close
to
the
floor
be

especially
careful
when

handling
it

in

small

confined

spaces

4

The

refrigerant
itself
is
nonflam

mable
However
a

toxic

gas

phosgene

gas
is

produced
when
it

contacts
fire

and

special
care
is
therefore

required

when

checking
for

leaks
in

the

system

with

a
halide
torch

5

Do
not
steam

clean
on
the

sys

tern

especially
condenser
since
exces

sively
high
pressure
will
build

up
in

the

system
resulting
in

explosion
of
the

system

The

above

precautions
are
essential

in

handling
of

Refrigerant
l
2
and

their
strict
observation

requires
suffi

AC
9
dent

training
Therefore
it
is

of
first

importance
that

any
other

personnel

than
a
well
trained
serviceman
should

not
be

allowed
to
handle
the

refrig

erant

EVACUATING

AND

CHARGING
SYSTEM

During

servicing
use
caution
to

keep
air

from

getting
into

refrigerant

When
air

enters
the

system
all

refriger

ant

must
be
evacuated
from

system

prior
to

charging
new
refrigerant
Air

in

refrigerant
has
the

following
delete

rious

effects

I

Since
the
condensation

tempera

ture

of
the
air
is

extremely
low
the
air

will

not
be

condensed
when

refrigerant

gas
is
condensed

in
the
condenser
and

the

air
will

thus
remain
in

gaseous

form

Consequently
the
effective

thermal

transmission
area

of
condenser

for

refrigerant
gas
will
be
red
uced
and

refrigerant
gas
to
be
condensed
will
be

red
ueed
The

pressure
rise
will
become

proportional
to

the
volume
of
the
air

in

system

2

When
air
and

refrigerant
are

mixed
in

system
a
chemical
reaction

will
be

produced
and

hydrochloric

acid
which
will

adversely
affect
the

aluminum

copper
iron
and
other

materials
in

system
may
be

generated

HANDLING
MANIFOLD

GAUGE

The

pressure
at
the

high
and
low

sides
of

system
should
be

measured

when

evacuating
and

charging
refrig

erant
and
when

diagnosing
trouble
in

the

system
The
manifold

gauge
is
used

for
these

purposes
A

manifold

gauge

has
two

pressure
gauges
a

low

pressure

gauge
and
a

high
pressure
gauge
These

gauges
are

connected
to

the

high
and

low

side
service

valves
of

system

through
flexible

charging
hoses

The

construction

of
manifold

gauge
is

shown
in

Figure
AC
13

When
valve
stem
is

fully
screwed

the
valve
is
front
seated
and
valve

path

and
the
center

path
are
blocked
When

valve
stem
is

backed
off
the

paths
are

opened

Air
Conditioning

Low

pressure
gauge

Compound
pres
lIrt

gaug
High
rHe
ure

g
Uge

c

7

I

Back
se
ted

Full
counter

J

clockwise

Ji

r

rnF
r

r1
gL

r

W
t

g

2

Connection
to
service
valve

I

Fully
close
both
valves
of
mani

fold

gauge
Connect
high
and
low

pressure
charging
hoses
to
manifold

gauge

2
Remove

caps
from
service
valves

Connect
high
and
low

pressure
charg

ing
hoses
to
service
valves
in

system

The

refrigerant
gas
wili
be

discharged

since
check
valve
is

open
when

pressing
charging
hose
onto

service

valve

3

Next
loosen
the

connection
fit

ting
of

charging
hose
at
manifold

gauge
side
for
2

to
3
seconds
to

purge

any
air

inside

charging
hose

by
the

pressurized
gas
in

system

Disconnedion
from

service
val
v

I

Fully
close
both
valves
of
mani

fold

gauge

2

Disconnect
two

charging
hoses

from
service
valves
At

this
time
the

gas
will
be

discharged
until
check
valve

is
closed
Therefore
disconnect
hose

quickly

Caution
Work
with

fingers
protected

with
cloth

against
frostbite

by
re

fri
l
fant
To
low
side
To
vacuum

pump
OI

To

high
ide

rvicc
valve

refrigerant
can

service
va
lve

HANDLING
SERVICE
VALVE

An
automatic
check
valve
is
built

into

service
valve
When
this
valve

presses
against
the
connection

fitting

that
is
when

charging
hose

is
con

nected
to
service
valve
the
valve
is

open
When

charging
hose
is
discon

nected
the
valve
is
closed
automatical

ly
Always
observe
the

following
usage

precautions

Always
install
valve

cap
after

using
service
valve

When

high
speed
opera
tion
is

per

formed
without
valve

cap
a

negative

pressure
will

gradually
build

up
at

the

low

pressure
side
of

system
and
air

may
be
sucked
in
In
addition
dirt
and

dust

will

easily
enter
the
valve
result

ing
in
foreign
matter

entering
the

system

L

5V

j

Close

AC
l0
Front
seated

Full
clockwise

AC243

Fig
AC
13

Manifold
gauge

2
Check
valve
will
be
half

opened

during
connection
and
disconnection

of

charging
hoses
and

refrigerant
will

be
forcefully

discharged
Therefore

connect
and
disconnect

charging
hoses

quickly
while

pressing
flare
nut

of

charging
hose

against
service

valve

Caution
Work
with

fingers
protected

with
cloth

against
frostbite

by
re

frigerant

3

Since
close
contact
between
the

thread
of
valve

eap
and

the
thread
of

service

valve
will

prevent
gas
leakage

keep
these
sections
clean
and
free
of

scratches
and
damage

4

Since

packing
of

charging
hose

will
be

lost

during
long
use

always

check

packing
prior
to

installing
charg

ing
hose

J

17

t

1
1

t

Cap

2

Service
valve

3

Charging
hose

AC733

Open

Fig
AC
14
Service
oolve