instrument cluster DATSUN PICK-UP 1977 Service Manual

REMOVAL
AND

INSTALLATION

I

Disconnect

battery
ground
cable

2

Working
through
meter

openings

of

cluster
lid
remove

three
screws

retaining
cluster

lid
to
instrument

panel

3

From
underneath
instrument

panel
remove
one
screw

retaining
me

ter

assembly
to
lower

panel
of
instru

ment

4

Withdraw
cluster
lid

slightly
For

ccess
to
switches
knobs
etc
follow

the

procedures

given
in

each
section

5

From
behind

combination
meter

disconnect

speedometer
cable

at

speedometer
head
and

multiple
con

nector
instrume

nt
wire

assembly

from

printed
circuit

6
On
vehicle
with
clock

disconnect

wires

at
each
connection

on
meter

printed
circuit

7
Remove
four
screws

retaining

me
ter

assembly
to
cluster
lid

8

Remov
combination
meter

as

sembly

9
When

installing
combination

me

ter

assembly
follow

the
reverse
se

quence
of
removal

Fig
BE

23

Removing
eluster
lid

SPEEDOMETER

REMOVAL
AND

INSTALLATION

1

Remove
combination
meter

as

sembly
Follow
the

procedures
under

Removal
and
Installation
in
Combina

tion

Meter
Body
Electrical

System

2
Remove
meter
front
cover
and

shadow

plate
by

removing
clips
and

screws

3

Remove
screws

retaining
speed

ometer
to

printed
circuit

housing
and

remove

speedometer

4
Install

speedometer
in
the

reverse

sequence
of
removal

ODOMETER
SWITCH

REMOVAL

AND

INSTALLATION

I
Remove

speedometer
as
outlined

under

Speedometer

2
Remove
odometer

retaining

screws

3
Install
odometer
in
the
reverse

sequence
of
removal

BE342A

Fig
BE

24
Odometerswitch

FUEL

GAUGE

AND
WATER

TEMPERATURE

GAUGE

DESCRI

PTION

The
fuel

gauge
consists

of
a

tank

unit

located
in
the

fuel
tank

and
fuel

gauge
The
tank

unit

detects
fuel
level

with
its

float

converts
fuel
level
varia

tion
to
a
resistance

of
slide
resistor

installed

on
the
float
base
and

thus

controls

current

flowing
to
the
fuel

gauge

BE16
The
water

temperature
gauge
con

sists
of
a

gauge
and
thermal
transmit

ter
located
in
the

engine
block
The

thermal
transmitter
is

equipped
with

a

thermistor
element

which
converts

cooling
water

temperature
variation

to

a
resistance
and
thus
the
thermal

tr

t
c

rtrols
cUfTent
flowing
to

the

gauge

The

fuel

gauge
and

water

tempera

ture

gauge
are

provided
with
a
bi
metal

arm
and
heater
coil
When
the

ignition

switch
is

set
to
ON
current
flows
to

the
heat
coil
and
the
heat
coil
is

heated
With
this
heat
the
bi
metal

arm
is

bent
and
thus
the

pointer

connected
to
the
bi
metal

arm
is

oper

ated
The
characteristics

of
both

gauges
are
the

same

A
tolerance

may
occur
on
the

water

temperature
gauge
or
fuel

gauge
due
to

source

voltage
fluctuation
The

voltage

regulator
is
used
to

supply
a

constant

voltage
so
that

the
water

temperature

gauge
and
fuel

gauge
operate
correctly

The

operating
part
of
the

regulator

consists
of
a
bi

metal

arm
and

a
heater

coil
When
the

ignition
switch
is

turned
on
the
bi
metal

arm
is
heated

and
bent

by
the
coil

opening
the

contact

Consequently
current
to

the

coil
is

interrupted
As

the
bi
metal

cools
the

contact
closes
The

repeti

tion

of
this

operation

produces
a

pulsating
voltage
of
8
volts
which
is

applied
to
the

water

temperature
and

fuel

gauges

If
both
the
water

temperature

gauge
and
fuel

gauge
become

faulty
at

the

same
time
this

may
be
attributed

to

problem
in
the

voltage
regulator

REMOVAL
AND

INSTALLATION

1
Remove

combination
meter
as

sembly
Follow
the

procedures
under

Removal

and
Installation
in
Combina

tion

Meter

2

Remove
meter
front
cover
and

shadow

plate
by

removing
clips
and

screws

3
Remove

retaining
nuts
at
the

back
side
of
combination

meter
as

sembly
and
remove

meter

4

Install
meter
in

the
reverse
se

quence
of

removal

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