1977 DATSUN PICK-UP check engine

MEASUREMENT

OF
REGULATOR

VOLTAGE

Regulator
voltage
is
measured
with

regulator
assembled
with
alternator

When

measuring
voltage
with

regulator

mounted
on

car
it
is

necessary
to

rotate

engine
at

high
speed

Connect
DC
voltmeter

l5
30Y

DC

ammeter

l5
30A

battery
and
a

O

25fl

resistor
rated

at
25W
with

cables

as
shown

I

Check
to
be
sure
that
all
electrical

loads
such
as

lamps
air

conditioner

radio
etc
are
turned
off

2

Before

starting
engine
be
sure
to

make
short
circuit
with
a

cable
be

tween
fuse
side
terminal
of
resistor

O
25fl

and

negative
side
terminal
of

ammeter
Failure
to
follow

this

pre

caution

will

cause
needle
of
ammeter

to

swing

violently
resulting
in
a
dam

aged
ammeter
Engine
Electrical

System

Genera

tor

A

r

iJ

IG

Fuse
box

i
B
Rqulator

Connector

Wire
harness

Short
circuit
here
between

fuse
side

tenninal
and

terminal
of
ammeter

before

starting
the
operation

Ammeter

lOA
V

Voltmeter
30V

EE055

Fig
EE
48

Measuring
regulator
voltage
with

regulator
on
vehicle

3
Refer
to
the

following
chart
to

determine
if

regulator
and
relative

EE
21
parts
are
in

good
condition

Engine
Electrical

System

I

Start

engine

2
Rotate

engine
at
2
500

rpm
for
several

minutes

Mter

racing
for

several
minutes

ammeter

reading

below
SA
After

racing
for

several
minutes

ammeter

reading
over
5

A

Fully

charged
battery
available

I

Replace
with

fully
charged

battery

2
Check

to
see
if
current
falls

below
SA
Fully
charged

battery
not
available

I
Connect
a

0
25
ohm

resistor
in
series

Current
falls
below

SA

Current
does

not
fall
below

SA

Recharge
battery
and

see
if

current
falls

below

SA

Reduce

engine
speed
to

idling
and
then

raise
it

to
2
500

rpm
while

observing
needle
of
voltmeter

Needle
of

voltmeter
held
within
limits

shown
in

the
below

table

Regulator

functioning
properly
Needle
of
voltme
ter
ou
t
of
limits
shown
in

the

following
chart

Adjust
or

replace
regulator

Regulator
type
TLI

Z
85C

Temperature
Oc
OF

Voltage
V
speed

c

Voltage

may
be

approximately

0
3
V

higher
than
rated
for
two
to

three
minutes
after

engine
is

start

ed
or
more

specifically
when

regu

lator
becomes
self
heated

Measure

ments
should

then
be
made

within

one
minute

after

starting
engine
or

when

regulator
is

cold

d
The

regulator
is

of
a

temperature

compensating
type
Before
meas

uring
voltage
be

sure
to
measure

surrounding
temperature
and
cor

rect

measurements

according
to
the

table
at
left
10

14

0

32

10

50

20
68

30
86

40
104
14
75
to
15

75

14
60
to
15
60

14
45
to
1545

14

30
to

15
30

14

15
to
15
15

14

00
to

15
00

Notes

3
Do

not
measure

voltage
immediate

ly
after

driving
Do
this
while
regulator
is
cold

b

To
measure

voltage
raise

engine

speed
gradually
from

idling
to

rated

EE
22

ADJUSTMENT

VOLTAGE
REGULATOR

When
regulating
voltage
as
meas

ured
above
deviates

from
rated
value

adjust
regulator
in

accordance
with
the

following
instructions

I

Inspect
contact
surface
and
if

rough
lightly
polish
with
fine

emery

paper
1
500
or
600

2
Measure
each

gap
and

adjust
if

necessary
Adjust
core

gap
and

point

gap
in
that
order
No

adjustment
is

required
for

yoke

gap

3

Adjusting
core

gap

Loosen
screw
4
mm
0
157
in

diameter
which
is
used
to
secure

contact
set
on

yoke
and
move
contact

upward
or
downward

properly
See

Figure
EE
49

Core

gap

0
6

to
1
0
mm

0
024
to
0
039
in

EE398

I
Contact

set

2
ThicknesJ
gauge

3
4

mm
0
157
in
dia
screw

4

Crosshead
Jcrewdriver

Fig
EE
49

AdjUJJting
core
gap
Engine
Electrical

System

4

Adjusting

point
gap

Loosen
screw
3

mm
O
lIS
in

diameter
used
to
secure

upper
con

tact
and
move

upper
contact

upward

or
downward
as

necessary
See

Figure

EE
50

Point

gap

035

to
0
45
mm

0
014

to
O
D1S
in

EE399

I
Thicknes

gauge

2
3
mm

0
118
in
dia

screw

3
Cro
Sshelld

screwdriver

4

Upper
contact

Fig
EE
50
Adjusting

point
gap

5

Adjusting
voltage

Adjust
regulating
voltage
as

follows

Loosen
lock
nut

securing

adjusting

screw
Turn
this
screw
clockwise
to

increase
or
counterclockwise
to

decrease

regulating
voltage
See

Figure
EE
5

J
CD

EE400

I

Wrench

2

Crosshead
screwdriver

3

Adjusting
screw

4
l
ock

nut

Fig
EE
51

AdjUJJting
rel
Ulating
voltage

CHARGE
RELAY

Nonna

relay
operating
voltage
is
S

to
IOV
as
measured
at
alternator
A

tenninal

Relay
itself
however

oper

ates
at
4
to
5V

Use
a
DC
voltmeter
and
set

up
a

circuit

as
shown
in

Figure
EE
52

Adjust
charge

relay
in

the
same

manner
as
that
for

voltage
regulator

L

Connect

positive
tenninal
of
voltmeter
to

regulator
lead
connector
N
tenninal
with

negative
terminal

grounded

2
Start

engine
and

keep
it

idle

3
Take
voltmeter

reading

o
Volt

I
Check
for

continuity
be

tween
terminals
of
re

gulator
and
alternator

2
Alternator
circuit

inopera

tive
if

continuity
exists
Below
5
2
Volts

Charge
warning
lamp
on

I
Check
fan
belt
tension

2
If
correct
remove

regulator

and

adjust
as

necessary
Over
5

2
Volts

Charge
warning
lamp
on

Charge
relay
coil
or
contact

points
out
of
order

Replace
regulator

Over
5
2
Volts

Charge
warning
lamp
off

Charge
relay
assembly
is
in

good
condition

EE
23

Engine
Electrical

System

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Including
alternator

Condition
Probable
cause

No

output
Sticking
brushes

Dirty
brushes
and

slip
rings

Loose
connections

or
broken
leads

Open
sta
tor

winding

Open
rotor

winding

Open
diodes

Shorted
rotor

Shorted
stator

Grounded
A

terminal

Broken

fan
belt

Excessive

output
Broken
neutral

wire
COIOf
of
wire
is

yellow

Voltage
fegulator
breakdown

Poor

grounding
of
alternator
and

voltage

regulator
En

terminal

Broken

ground
wire

color
of
wire
is
black

Low

output
Loose

or
worn
fan
belt

Sticking
brushes

Low

brush

spring
tension

Voltage
regulator
breakdown

Dirty

slip
rings

Partial
short

ground
or

open
in

stator

winding

Partially
shorted

or

grounded
rotor

winding

Open
or
damaged
diode

Noisy
alternator
Loose

mounting

Loose
drive

pulley

Broken
ball

bearing

Improperly
seated
brushes

EE

25
Corrective
action

Correct
or

replace
brushes
and
brush

springs

Clean

Retighten
or
soldef

connections

Replace
leads
if

necessary

Repair
Of

replace
stator

Replace
rotor

Replace

Replace
rotor

Repair
or

replace

Replace
insulator

Replace

Replace

Check

regulator
operation
and

repair
or

replace
as

required

Retighten
terminal
connection

Replace

Retighten
or

replace

Correct
or

replace
brushes
and

springs
if

necessary

Replace
brush

springs

Check

regulator
OpefatiOn
and

repair
or

replace
as

required

Clean

Replace
stator

Replace
rotor

Replace
diode

Retighten
bolts

Retighten

Replace

Seat

correctly

Engine
Electrical

System

DISTRIBUTOR
Non
California
models

CONTENTS

CONSTRUCTION

CHECKING
AND
ADJUSTMENT

CAP
AND
ROTOR

HEAD

CONTACT
POINT

CONOENSER
EE
30

EE
31

EE
31

EE
31

EE

31
ADVANCE
MECHANISMS

DISASSEMBL
Y

ASSEMBLY

SERVICE
DATA
AND
SPECIFICATIONS
EE
31

EE
32

EE
32

EE
33

CONSTRUCTION

The
distributor
consists
of
breaker

plate
with
contact

points

centrifugal

advance
mechanism
vacuum
control

ler
distributor
shaft
and

rotor

D

@

t

Cap
assembly

2
Rotor

head

assembly

3
Condenser

assembly

4

Ground
wire

assembly

5
Lead
wire
assem

bly

6
Contact

set

7

Breaker

plate
assembly

8

Packing

9
earn
assembly

10
Governor

spring

11
GoVernor

weight

12
Shaft

assembly

13
Vacuum
controller

14
Terminal

assembly

IS

Housing

16

Fixing

plate

17

O

ring

IS
Collar
v

i

@

D

@

EE32Q

Fig
EE
57

EE
30

CHECKING
AND

ADJUSTMENT

CAP
AND
ROTOR
HEAD

Cap
and
rotor
head
should
be
in

spected
periodically
as

specified
in
the

Maintenance
Schedule
Remove
cap

and
clean
all
dust
and
carbon
deposits

from

cap
and
rotor
If

cap
is
cracked

or
is

leaking
replace
with
a
De
one

CONTACT
POINT

Contact

point
should
be

replaced
in

accordance
with
the
Maintenance

Schedule

Standard

point
gap
is
0
45
to
0
55

mm
O
OIS
to
0

022
in
In

case
size

is
off
the
standard

adjustment
is
made

by
loosening
point
screws

Gap
gauge

is

required
for

adjustment

When

point
surface
is

rough
take

off

any
irregularities
with

fine
sand

paper
of
No
500
or
600
or
with
oil

stone

When
wear

on
contact

points
is

noticeable
replace
points
together

with
contact

arm
To

replace

proceed

as

follows

EE322

Fig
EE
58
Adju
ting
point

gap

EE321

I

Primary
lead
termina

2
Ground
lead
wire

3
Set
screw

4

Adjuster

5
Screw
Fig
EE
59
Breaker
Engine
Electrical

System

First
turn
out
set

screws
1
to

1
5

turns
at
contact
arm
and

primary
lead

wire

connection

just
for

enough
to

pull
out

primary
lead
terminal

Referring
to

Figure
EE

59
unSCrew

two
contact
set

fixing
screws

and

remove
lead
wire

While

holding
contact
arm

by

fingers

pull
out
contact
set

toward

you
by

raising
it

slightly
Contact

point
and

afm
can

then
be

removed

together

Install
new
contact

point
and

arm

assembly
in

reverse
sequence
of

removal

Coat
cam
with
a

light
coating

of

grease

ADVANCE
MECHANISMS

Specifications

Application

Vacuum
advance

Distributor

degrees
distributor

mmHg
inHg

Centrifugal
advance

Distributor

degrees

distribu
tor

rpm

For
Canada

Vacuum

advance
mechanism

mechanical

parts

If
vacuum
advance
mechanism
fails

to

operate
properly
check
for
the

following
items

and
correct
the
mal

function
as

required

1
Check
vacuum
inlet
for

signs
of

leakage
at
its

connection

Ifnecessacy

retighten
or

replace
with
a
new
one

2
Check
vacuum

diaphragm
for
air

leak

If
leak
is

found

replace
vacuum

controller

assembly

3

Inspect
breaker

plate
for
smooth

moving

If

pia
te
does
not

move

smoothly

this
condition
could
be
due
to

sticky

steel
balls
or

pivot
Apply
grease
to

steel
balls
or
if

necessary

replace

breaker

plate
as
an

assembly

EE
31
CONDENSER

Satisfactory
performance
of
con

denser

depends
on

capacity
and

degree

of
insulation

requiring
attention

to
be

sure

that
terminals
are
clean
and
set

screws
are

tight

Checking
of

condenser
is
made

by
a

condenser
tester

D4A4
06

D4A6
07
D4A4
07

D4A6
0S

Automatic

transmission
Manual
transmission

00
150
5

91

30
250
9

S4
00
170
6

69

6
50
300

1I
S1

00
550

11
0

2

300
00
600

110
1
950

Centrifugal
advance

mechanical

parts

When
cause
of

engine
malfunction

is

traced
to

centrifugal
advance
me

chanical

part
use
distributor
tester
to

check
its
characteristic

See
the

specifications
above

When

nothing
is

wrong
with
its

characteristic
conceivable
causes
are

break
down
abnormal

wearing
out
of

driving
part
or
others
So
do

not

disassemble

it

In

case
of

improper
characteristic

take
off
contact
breaker

assembly
and

check

closely
cam

assembly

governor

weight
shaft
and

governor
spring
etc

In
case

centrifugal
advance
me

chanical

part
is
reassembled
be

sure
to

check
advance
characteristic

by
dis

tributor
tester

DISASSEMBLY

To
disassemble
follow
the
below

proccd
ure

I
Take

off

cap
and
disconnect
rotor

head

2
Remove
vacuum
controller

EE291

Fig
EE
60
Removing
vacuum

controller

3
Remove
contact
set

Refer
to

Page
EE
31
when
contact

set
i
removed

EE323

Fig
EE
61

Removing
contact
tel

EE324

Fig
EE
62

Removing
breaker

plate
Engine
Electrical

System

4
When
breaker

plate
is
removed

be
careful
not
to
lose
steel

balls

between
breaker

spring
and
breaker

plate

5

Pul
roll

pin
out
and
siconnect

collar
to
remove
the
entire

rotating

parts

EE325

Fig
EE
63
Removing
roll

pin

EE326

Fig
EE

64
Removil1l
rotation
paTta

6
Remove

packing
from
the

top
of

cam

assembly
and
unscrew
earn
astern

bly
setscrew
Put
match
mark
across

earn
and
shaft
so
that
original
combi

nation
can
be
restored
at
assembly

EE
32
EE075

Fig
EE

65
Removing
cam

7

When

governor
weight
and

spring

are
disconnected
be
careful
not
to

stretch
or
deform

governor
spring

After

disassembling
apply
grease
to

governor
weights

ASSEMBLY

To
assemble
reverse
the
order

of

disassembly
Carefully
observe
the

fol

lowing
instructions

Align
match
marl

s
so
that

parts

are
assembled

to
their

original
posi

tions

2

Apply

grease
to
the

top
of
cam

assembly
as

required

3
Check
the

operation
of

governor

before

installing
distributor
on

engine

4

Adjust
ignition
timing
afteT
dis

tributor
is
installed
on

engine

Engine
Electrical

System

SERVICE
DATA
AND
SPECIFICATIONS

D4A4

06
D4A4
07

Type
D4A6
07
D4A6
08

Firing
order
1
3
4
2
13
4
2

Rotating
direction
Counterclockwise
Counterclockwise

Owen

angle
degree
490
to
550
490

to
550

Point

gap
mm
in
0

45
to
0

55
0
45
to
0
55

0
018
to

0
022
0
018
to
0

022

Point

pressure
kg
lb
0
40

to
0
55
0
40
to
0
55

0

88
to
1

21
0
88
to
1
21

Condenser

capacity
JlF
0
20

to
0
24
0
20

to
0
24

Condenser
isolate
resistance
Mrl
5
5

Cap
isolate
resistance
Mrl
50
50

Rotor
head
isolate
resistance
Mrl
50
50

Cap
carbon

point
length
mm
in
10

0
39
10
0
39

For
Canada

DISTRIBUTOR
California
models

CONSTRUCTION

CHECKING
AND
ADJUSTMENT

CAP
AND

ROTOR
HEAD

AIR

GAP

CONSTRUCTION

In
the
conventional
distributor
the

ignition
liming
is

detected

by
the
cam

and
breaker
arm
while
in
this
transis

tor

ignition
unit
it
is

detected

by
the

reluctor
on
the
shaft
and
the

pick
up

coil

provided
in

place
of
the
breaker

The

pick
up
coil
consists
of
a

magnet

coil
etc
The
amount
of

magnetic
flux

passing
through
the

pole
piece
in
the

coil
is

changed
at
the

moment
the

pole
CONTENTS

EE
33

EE
33

EE
33

EE
33
ADVANCE
MECHANISMS

DISASSEMBLY

ASSEMBLY

SERVICE
DATA
AND
SPECIFICATIONS
EE
33

EE
35

EE
35

EE
36

piece
faces
the

protrusion
of
the

re

luctor

and
then
the
electrical

signal
is

genera
ted
in
the

pick
up
coil

This
electric
signal
is

conducted

into

the
transistor

ignition
unit
which

in

turn
breaks
tI
e

primary
coil
current

running
through
the

ignition
coil
and

generates

high
voltage
in
the

secondary

winding
Also
this
transistor

ignition

EE
33
unit

utilizes
this
electric

signal
to

restore
the

primary
coil
to
the

original

state
after

cutting
off
the

primary

current
for
a
fIXed
time

The

centrifugal
and
vacuum
ad

vance
mechanisms

employ
the
con

ventional
mechanical

type
The
con

tactor
is
used
to
eliminate
vacuum

and

centrifugal
advance

hysteresis

I