1977 DATSUN PICK-UP lock

EE299

Fig
EE
74

Driving
in
roll

pin
Engine
Electrical

System

4

Apply
grease
to
the

top
of
rotor

shaft
as

required

5

Check
the

operation
of

governor

before

installing
distributor
on

engine

6

Adjust
ignition
timing
after

distri

butor
is
installed

on

engine

SERVICE

DATA
AND
SPECIFICATIONS

Type

Firing
order

Rotating
direction

Duty

Air

gap
mm
in

MU

Cap
insulation
resistance

Rotor
head

insulation
resistance
MU

Cap
carbon

point
length
mm
in
D4F4
03
D4F4
04

1
3
4

2

Counterclockwise

70
20
to
40
at

idling

0
2
to
0
4
O

OOS
to
0

016

More
than
50

More
than
50

10
0
39

TRANSISTOR

IGNITION
UNIT

California
models

DESCRIPTION

TRANSISTOR
IGNITION
UNIT

REMOVAL
AND

INSTALLATION

INSPECTION

1
POWER

SUPPLY
WI

RING
AND

BATTERY

CHECK

DESCRIPTION

TRANSISTOR

IGNITION

UNIT

The
transistor

ignition
unit

provides

the

following
functions

L
It

makes
and
breaks
the
electric

current
in

the

primacy
circuit

of
the

ignition
coil
2

CONTINUITY
CHECK

OF
PRIMARY

CIRCUIT

3

PICK
UP

COIL
CONTINUITY
CHECK

4
PICK
UP
COIL
POWER

SIGNAL

PULSE

CHECK

5
TRANSISTOR

IGNITION
UNIT
CHECK
CONTENTS

EE

36

EE

36

EE
37

EE
37

EE
37

2

The

duty
control

circuit
sets
the

rate
of
make

and
break
within

one

cycle
i
e

this

maintains

good

ignition

characteristics
of

engine
from
low

speed
to

high
speed
and
is

equal
to

the

dweU

angle
in

the

conventional

breaker

type
distributor

3

A

preventive
circuit

against
lock

EE
36
EE
36

EE
38

EE
38

EE
39

ing
is

provided
This

cuts
off
the

prilnaCY
electric
current
in

the

ignition

coil
when
the

ignition
switch
is

turned

on
with
the

engine
not

running

Each

component
part
of
this
unit

is

highly
reliable
however

should

any

part
be
found

faulty
the
entire
assem

bly
must
be

replaced

Engine
Electrical

System

Transistor

ignition
unit

r
1
Power

switching

circuit
Duty

control

circuit

To
starter

To
distributor

Ba

ttery
Ignition
coil
1
Spark
timing

1
Signal
mom

toring
circuit
Lock

j
preven
ling

circuit

nm

Distributor

EE437

Fig
EE
75
Transistor

ignition
unit
circuit

diagram

REMOVAL
AND

INSTALLATION

Transistor

ignition
unit
is

located

on
the

right
hand
dash

side

panel
in

passenger
compartment

Disconnect

battery
negative
cable

2
Disconnect

wiring
harness
from

unit

3
Remove
two

setscrews
and
te

move
unit

4

To
install
reverse
the
order
of

removal

Note
Be

sure
to
connect

wiring
har

nesses
to
their

proper

positio

Failure
to
do
so
will

damage
the

unit

Refer
to

Figure
EE
76

Fig
EE
76
External
view

of

ignition

unit
INSPECTION

If
the

engine
does

not
run
due

to

faulty
ignition
system
check
the

igni

tion

system
as
follows

Check
for
a
cracked
distributor

rotor
or

cap
and
corroded
tenninals

Visually

inspect
high
tension
wires

for

condition
and
if

necessary
use
an

ignition
oscilloscope
or
a
circuit
tester

to
make

performance
checks
Check

spark
plugs
and

adjust
gaps
as
neces

sary

Replace
a

spark
plug
which

is
not

suitable
for
further
use
If
the

above

checks
cannot
correct
the

problem

check
the
entire

ignition
system
with

an

oscilloscope
or

a
circuit

tester

L
CHECKING
WITH
AN

OSCILLOSCOPE

An

oscilloscope
can
be
used
for

checking
almost

all
the
items
in

a

transistor

ignition
system

CHECKING
WITH
A

CIRCUIT

TESTER

A
circuit
tester
can
not
be

used
for

the

duty
control
circuit

and

power

t18nsistor

performance
tests

Both

methods
use
of

an

oscilloscope
and
a

circuit
tester

are
described
in
this

section

EE

37
The
items

are
classified

by
numerals

in

accordance
with
the

objective
of

checks
to

be

performed
Several

wiring

diagrams
are
found

on

pages
EE
41

to

EE
45
The
thick
lines
indicate

the

objective
of

each
individual
item

check

When

checking
a
circuit
with
an

oscilloscope
or
a
circuit
tester
be

careful
not
to

confuse
the

polarity
of

the
lead
wires
if

potential
difference

exists
between
the
check

points
at

which
the
lead
wires
are
to
be
con

tacted

Also
do
not

attempt
to
con

nect
the

lead
wires
to

any
points
in
the

circuit
other

than
those

designated

Careless

handling
of
the
lead
wires

will

result
in

damage
to
the
transistor

ignition
unit

as
well
as
to
the
oscillo

scope
or
circuit

tester

The
connection
of

a
tachometer

or

a

timing
light
in

parallel
with
an

oscilloscope
or
a
circuit
tester
is
al

lowable

provided
that
such
a

connec

tion
is

made
with
due
consideration
to

wiring
connections

1
POWER
SUPPLY

WIRING

AND

BAnERY
CHECK

See

wIrIng
diagram

In

FIgure
EE
88

Procedure

I
Turn
on

ignition
switch

2

Connect

a
circuit
tester
or

an

oscilloscope
as
shown
in
the

figure

below

DC
50
volt

range

EE302

Fig
EE
77

Checking
power
supply

wiring
and

batt

ry

Criterion

When

power
source

battery

voltage
is

indicated
OK

Lower

or
no
indication
N
G

Procedure
with
an

oscilloscope

1
Disconnect
anti

dieseling
solenoid

valve
connector

2

Connect
a

positive
lead
of
an

oscilloscope
to
R
olor
wire

and
a

negative
lead
of
an

oscilloscope
to

G
color
wire

3
Set
a
SLOPE
select
switch
of

an
oscilloscope
to
the

positive
side
If

so

equipped

4

Rotate
starter
motor

5
Check
the

wave
form
as
shown
in

the

figure
below

EE268

Fig
EE
82
Wave

form
of
pick
up
coil

Criterion

When
the

wave
form
takes

the

shape
of
a

full
line
OK

When
the

wave
form
takes
the

shape
of

a
dashed
line

or
when

there

is
no
wave

form
N

G

If
the
result
is
N
G

Replace

pick
up
coil

assembly

5

TRANSISTOR
IGNITION

UNIT

CHECK
See

wiring

diagram
In

Figure
EE
92

Check
items
5
1
and
5
2
with

an

oscilloscope

Where

an

oscilloscope
is
not
availa

ble
check
to
make
sure
that
all

previ

ous
tests
are

satisfactory
and
that
no

spark
is

issuing
from
the

secondary

high
tension
wire

If

everything
else
is

satisfactory

then
the
transistor

ignition
unit
is

faulty
or
there
is

discontinuity
in
the

secondary

high
tension
wire

Replace

the

faulty
part
After

replacement

check
the

sparks
from
the

secondary

cord

5
1

Checking
operatIon

of
transIstor

Ignition
unit

Procedure

I

Connect

ignition
coil
and
dis

tributor
harness
to

ignition
coil
exter

nal
resistor
Engine
Electrical

System

Oscilloscope

o

EB

80

To

body
metal
Ignition
coil
terminal

8W

r
8

0

C
0

EB

Fig
EE
83

Checking
operation
of
transistor

ignition
unit
EE307

@

@

2

Connect

wiring
harness
to
the

ignition
unit

3
Disconnect
anti

dieseling
solenoid

valve
connector

4

Connect
oscilloscope
as
shown
in

Figure
EE
83

rotate
the
starter
motor

and
observe
the
wave

form
on
the

oscilloscope

Criterion

See

Figure
EE
84

When

a
wave
form
similar
to

a
is
observed
OK

When
a
wave
form
similar
to

b
is

obseIVed

or
when
no
wave
form
is

observed
N

G

If
the
result
is
N
G
the
fault
lies

either
in
the
transistor
unit

or
in
the

secondary
high
tension
wire

Replace
these

parts

EE
39
EE452

Fig
EE
84
W
uve

form
of
pulse

If
an

oscilloscope
is

not
avail

able

Procedure

1
Connect

ignition
coil
and
dis

tributor
harness
to

ignition
coil
exter

nal
resistor

2

Connect

wiring
harness
to

igni

tion
unit

3

Disconnect
anti

dieseling
solenoid

valve

connector

4

Keep
the

secondary
high
tension

wire
end
4
to
5

mm
0
16
to
0
20
in

away
from

engine
block
rotate
the

starter
motor
and
check

whether

sparks
fly
across
the
clearance

Criterion

Where
sparks
issue
OK

Where

no
spark
issues
N

G

If
the
result
is
N
G
the
fault

lies
either
in

the
transistor
unit
or
in

the

secondary
high
tension
wire

Replace
these

paris

5
2

Checking
operation

of

duty

Procedure

Connect
anti

dieseling
solenoid

valve

connector

2

While
the

engine
is

idling
observe

the
wave

ronn
on

the

oscilloscope
in

the

same

way
as
stated
in
item
5

Figure
EE
83
Determine
the
ratio

tiT

as
shown
in

Figure
EE
85

I

T
x

100

20
to

401
1

at

idling

h

Lt
1

T

EE257

Fig
EE

85
Wove

form
ofduty
pulse

Criterion

When

a
standard
ratio
of

about

20

to

40
is

obtaiiied

OK

When
the

ratio
obtained

is

less
than
20

or

more
than
40

N

G

If

the
result
is
N

G

transistor

ignition
unit
Replace

5
3

Checking
lock

preventive
circuit

If
a
circuit
tester

is
used

Procedure

1

Connect
a
circuit

tester
as
shown

in

Figure
EE
83

or

EE
86

positive

terminal
of

tester
is
connected
to
L

color
wire
and

negative
terminal
of

tester
is

grounded

2
Turn
on

ignition
switch

Check
to

see
whether
the
tester
indicates

the

vol

age
of

power
source
ba

t1ery

as
soon
as

ignition
switch
is

turned

on
Engine
Electrical

System

DC

50
volt

range

rC

o

8

Criterion

When

power
source

voltage

is
indicated

When

approximately

is

indicated
OK

zero

voltage

N
G

If

the
result
is
N
G

Take
the

following
measures

Replace
transistor

ignition
unit

If
an

oscilloScope
is
uSetl

Procedure

I
When

using
an

oscilloscope
in

stead
of

a
tester

arrange
the

connec

Oy

EE
40
B
fJ

BW
O

L

t
1

V
Transi
tor

ignition
unit

EE357

Fig
EE
86

Checking
lock

p
uentive
circuit

tion
in

the

same

way
as
shown
in

Figure
EE
83
or

Figure
EE
86

Turn

on

ignition
switch

Check
to

see
whether
the

wave

form
on
the

oscilloscope
rises

up
to

the

power
source

voltage
within

about

10
seconds
after

ignition
switch
is

turned
on

Criterion

The
same

as
described
before

for

use
of
a
tester

Power
source

voltage

t

Ignition
switch
ON

EE430

Fig
EE
87
Wave

form
of
lock

preventive
circuit

W
t
gni
on
s
Witch
ll
l
I

o
f1
t
Of
CO
a
rntM

OliU
bUlot
r

Terrn
oa
blocK
o

B
powet
swilchln

CltCU1l

BW
I
l
G
@
DUtY
cof
lTO

C
tCU
l
I
I

u
5
l
l
l
l
0
1Il

St
l
titrllt
t

signa
tl
onitotifl

circuit

Ratt
e
cump
LOCK
preyen
tn

circuit
f

l
o1
unl
l
EE44

f
o
o

Fig
ER
2
ER207

Removing
front
engine

mounting
bolts

20
Place
a

jack
under
transmission

and

jack
it

up

21
Loosen

two
rear

engine
mount

ing
bolts

CD

22
Loosen
two

exhaust
tube

hanger

bolts

V
California
models

only

23
Remove
four
bolts

CID
securing

engine
mounting
rear

support
to
side

member
and
detach
rear

support

j
r

O

1

ER271

Fig
ER
3
Removing
rear

engine

mounting
support

24
Remove

steering
idler
arm
secur

ing
bolts
and

push
down

cross
rod

iC

EA278

Fig
ER

4
Removing
idler
arm

25
Pull

engine
towards
front
as
far

as

possible
and

carefully
raise
if
and

transmission
with
a
hoist
and
cable

Note
In

this

r
an

care
should

always
be
taken
not
to
allow
the

unit
to
hit

against
any

adjacent

parts
Engine
Removal
Installation

INSTALLATION
E
R367

Fig
ER
5
Lifting
engine

Install

engine
with
transmission
in

reverse
order
of

removal

observing
the

following

I
When

installing
first
secure

rear

2

Front

1
Bracket
R
H

2

Insulator
R
H

3
Bracket
LH

4

Heat
shield

plate

5
Insulator

L
H

6
Rear

support

7
Rear
insulator

8
Exhaust
tube

hanger

California
models

only
engine
mounting

support
to

body

2
Refer
to

applicable
section
when

installing
and

adjusting
any
parts

@

E

A279

Fig
ER

6
Structual
view

of
engine
mounting

ENGINE
MOUNTING

INSULATORS

Three
insulators
are
used
to

mount

the

engine
and
transmission

two
are

located
at

the
left
and

right
of
the

cylinder
block
and
one
at
the
transmis

sion

rear
extension

housing
Replace
any
insulator
that
shows

signs
of

separation
or
deterioration

Be
sure
to

keep
insulator
free
from

oil

or

grease

ER
3

Engine
Removal
Installation

FRONT

INSULATOR

Removal
and
installation
7
To

install
reverse
order
of

re

moval

1

Disconnect

battery
ground
cable

2
Remove

hood

3

Suspend
engine
with
wire
or

chain

4
Loosen
front

engine
mounting

insulator

upper
nuts

both
sides

5

Carefully
raise

engine
a
little
with

a
hoist
and
cable

6
Remove
front

mounting
insula

tors
at
front

supports
after

removing

front

mounting
bolts
REAR
INSULATOR

Ramoval
and
Installation

1

Place
a

jack
under
transmission

TIGHTENING

TORQUE

Fixing
bolts
and
nuts

Front

mounting
bracket
to

cylinder
block

Front

mounting
in

lator
to
brac
t

Front

mounting
insulator
to
front

support

Rear

mounting
insulator
to

transmission

Rear

mounting
insulator
to

rear

support

Rear

support
to
frame

Clutch

operating
cylinder
to
transmission

Exhaust
front

tube
to
exhaust
manifold

Center

bearing
bracket
to

crossrnember

Propeller
shaft
to

companion

flange
kg
m
ft
lb

kg
m
ft
Ib

kg
m
ft
lb

kg
m
ft
lb

kg
m
ft
Ib

kg
m
ft
lb

kg
m
ft
Io

kg
m
ft
lb

kg
m
ft
lb

kg
m
ft
lb

ER
4
and

jack
it

up
slightly

2

Loosen
two

rear

engine
mounting

bolts

3

Loosen
two

exhaust
tube

hanger

bolts
California

models

only

4

Remove
rear

mounting
insulator

at
transmission
rear
extension

after

removing
insulator

securing
bolts

5

To
install

reverse
order

of
Ie

moval

2
6
to
3
6
19
to
26

2

6
to
3

6

19
t
o

76

1
4

to
1
8
10
to
13

3

2
to
3
7
23
to

27

1
6
to
2
2

12
to
16

3

2
to
4
3
23
to
31

2
5

to
3

5

18
to
25

1

9
to
2
5
14
to
18

1
6

to
2
2

12
to
16

2
4
to

3
3

17
to

24

Stroke
30
mm

Jt
i
I
1
18
in

Sj

1

i
J
o

Fig
CL
15
Non

adj
table

operating

cylinder

CLUTCH
PEDAL

Removal
and

installation

Removal
See

Figure
CL
16

1

Pry
off
cotter

pin
and
take
out

clevis

pin
disconnect

push
rod
from

pedal
assembly

2
Unhook

return

spring
Loosen
off

fulcrum

pin
and
remove

pedal
as

sembly

CfJ

W5
6

3

ch

fD

ij

ll

i
A
1
aevis

pin

2
Cotter

pin

3
Return

spring

4
Pedal
boss

S
Pedal

assembly

6
Bush

7

Nut

8
Push
rod

9
Fulcrum

pin

Fig
CL

16

Exploded
view

of
clutch

pedal

Note
Before

removing
clutch

pedal

note
toe
board

clearance
at

pedal

pad

Installation

To

install

reverse
the

order
of

removal

Apply
multi

purpose
grease

to

the
friction
surfaces
of

the
disas

sembled

parts
as

shown
in

Figure

CL
17

Tightening

torque

Pedal

installation
bolt

Fulcrum
pin

1

9
to
2
4

kg
m

14
to
17
ft
Ib

Lock

nuts
A
and
B

0
8
to
1
2

kg
m

5
8
to
8
7
ft
lb
CLtJTCH

Note
Refer
to

Figure
Clot8
for
the

correct
direction
of
return

spring

1

Pedal

assembly

2
Push
rod

3
Return

spring

eL116

Fig
CL

1B

Hooking
return

pring

Inspection
and

adjustment

Clean
all
the

following
parts
in

cleaning
solvent
and
check
for
wear

damage
or

any
other
abnormal
condi

tion

Replace
the

parts
which
are

faulty

1
Return

spring

2
Bush

3
Pedal
boss

etc

CL
6
1

Lock
nut

A

2
Lock

nut
8

Pedal

beiBht
a

53
mm

6
02
in

Pedal
full

stroke
b
117
10
23
4
6
104

84
in

@
Multi

purpose
grease

CL102

Fig
CL

17
Adju
ting
pedal
height

1

Adjust
the

pedal
height
to
153

mm
6
02
in

by

adjusting
pedal
stop

per
and

tighten
lock
nut
A

to
the

specified

torque
0
8
to
1
2

kg
m
5
8

to
8
7
ft
lb

2

Turn
in

or
out

push
rod

adjusting

screw
until
a

play
of
I
to
3
mm
0

039

to
0

118
in
at
clevis

pin
is

obtained

Then

tighten
lock
nut
B

to
the

specified

torque
0
8
to

1
2

kg
m
5

8

to
8
7ft
Ib

Note
Exercise

care
in

adjusting
the

play
not
to
block

the

port
or

master

cylinder
A
blocked

port

may
result
if
too
small

play
at

clevis

pin
exists

3
After

adjusting
check

the

pedal

full
stroke

is
in
117

to
123
mm
4

61

to
4
84

in

Note

Depress
and
release
clutch

pedal
over
its
entire
stroke
to

en

sure
that
the
clutch

linkage
op

erates

smoothly
without

squeak

noise
interference
and

binding