1973 DATSUN B110 alternator belt

INSPECTION

Referring
to
the

wiring
diagram
check
the

wiring

harness

for
connection
with
electrical

equipment
and

connector
for
conned
ion
and
installation
When

checking

the

wiring
harness

note
the

following
matters

Connected
unit
should

not
be

loose
rusted
or

contaminated

2

Cable
insulator
cover
should
not
be

damaged
crack

ed
or

insulating
material

should
not
be
deteriorated

3
For
those

parts
which

are

grounded
through
the

installation

bolts
the
bolts
should
be
in
contact
with
the

body
completely
so
that

continuity
is

provided
in

between
the

body
and
bolts

4
Terminals

of
unit

through
which

current
flows

should
not
come

into
contact
with

other
metal

parts

5
No

erroneous
connection
should
be

present

DESCRIPTION

When
an
overcunent

exceeding
the
rated

amperage

flows
to
a
circuit
the

fuse
is
heated
and
melted
the

circuit
is

interrupted
and

thus
cables
and

electrical

equipment
are

protected
from

damaging
due
to

burning
or

damaging
is

limited
to
the

minimum
This
vehicle

is

equipped
with
six

fuses
and

one
fusible
link
The
fuses

are

located

in
the

fuse
box
and
used

to

protect
illumination

signal
and
other

systems
and
the
fusible
link
is

adopted

in
the
cable
between
the

battery
and
alternator
to

protect

the

charging
and

starting
circuits

FiJ
BE
16
Fuse
box
BODY

6
Cables
should
be

damped
so
that

they
do
not
come

into
contact
with

sharp
corner
or

part
lernperature
of

which

rises

highly

7
Cables
should
be

securely
clamped
in

posItions

sufficiently
separated
from

rotating
parts
such
as
fan

pulley
fan
belt

etc

8
Cables
should
be

provided
with
an

optimum
extra

length
at
sections

stationarity
on
the

body
or
at
sections

where
vibration

occurs
due
to

engine
operation
and

others

Note
a
When

inspecting
or

performing
other
mainte

nance

service
and
no

power
supply
is

required

particularly
or
when
it
is

anticipated
that
a

part

may
be
short
circuited
disconnect
the

battery
H

terminal

b
In
no
event
should
an
unloaded
circuit
be

directly
connected
with
ground
Be
sure
to
use
a

test

lamp
or
circuit

tester

fUSE

Fig
BE
17
Fusible
link

INSPECTION

In
the

most

cases
fuse
can
be

checked

visually

However
when

it
is
difficult
to

check

visually
a
circuit

tester

may
be
used

The
fusible
link
can

be

inspected

visually
or

by

feeling
on

finger

tip
However
the
fusible

link
can
be

inspected
more

correctly

by
using
a
circuit

tester

BE

6

ENGINE

27
Install
the
oil

pump
with
oil
filter

28
Install
the

alternator
fan
and

fan
belt

29
Install
the

fuel

pump

30

Install
the
distributor

assembly

Fig
EM
B7

Timing
maTk

Fig
EM
SS
Distributor
installation

EM
32
Notes
3
Set
the

No
1

piston
to
its

top
dead
center
of

the

compression
stroke

b
Before
installation
return

the
distributor
rotor

approximately
60

degrees
from

its

regular
posi

tion
Insert
the

assembly

meshing
the
distributor

drive

gear
and
driven

gear

After

installation
the
distributor
rotor
should

come

into
contact

with
the
mark
on
the
rotor

cap

fitting
as

shown
in
the

Figure

31

Install
the

spark
plugs
and

connect
the

distributor

to

plug
high
tension

lead
wire

32
Install
the
fuel
hoses

and
tubes

33
Install
the
clutch

cover

assembly

34
Install
the

engine
stingers
and

crankcase
ventilation

hose

35
Dismount

the

engine
from
the

working
stand

Install
the

engine
mountings

ENGINE
ElECTRICAL
SYSTEM

CD
@

@
@

y

@
1

Pulley
assembly

2

Front
cover

3

Front

bearing

4

Rotor

5
Rear

bearing

6
Stator

7
Rear
cover

8
Brush

assembly

9
Diode
set

pl
te

assembly

10
Diode

cover

Jl

Through
bolt

EE031

Fig
EE
29

Exploded
view

of
altematoT

REMOVAL

3

Loosen
the

adjusting
bolt

@
o

lL
1
Disconnect
the

negative
battery
terminal

2
Disconnect

two
lead
wires

and
connector
from
the

alternator

4
Remove
the
alternator

drive
belt
@

J

5
Remove
the
alternator
installation
bolt

@@@

6
Dismount
the

alternator
from
the
vehicle

EE033

Fig
EE
JO
Removal

of
pulley

DISASSEMBLY

l
Remove
the

pulley
nut

pulley
rim
fan
and
the

spacer
the

brush
holder
cover
Remove

the
brush
holder
forward

and
remove
the
brushes

together
with
the
brush

holder

2
Remove
the
brush
holder

fixing
screws
and
remove
Note
Do
not
disconnect
N
term
inal
from
stator
coil
lead

wire

EE
17

ENGINE

at
4
to
5
V

Use

i
f
DC
voltmeter
and
set

up
a
circuit

as
shown
in

Figure
EE

56

EEQ58
L
W

R

IG

Will

r

AI
W

lli

r

N
Y

vge

I

JJ
Rtl
ublOr

I
I
Spanner

Cross
head

screwdriver

I

I
Adjusting
screw

Lock
nut

Vollm
lcl

Fig
EE
55

Adjusting
Tegulating
voltage

Charging
relay

Normal

relay

operating
voltage
is
8
to

10V
as
measured

at
alternator
A
terminal

Relay
itself
however

operates
EE059

Fig
EE
56

Testing

chaTging
Telay

Connect

positive
terminal
of

voltmeter
to

regulator
lead
connector
N

terminal
with

negative
terminal

grounded

2

Start

engine
and

keep
it

idle

3
Take
voltmeter

reading

o

Volt
Below
5
2
Volt
I

Over
5
2
Volt

I
Check
for

continuity
between

N

terminals
of

regulator

and

alternator

2
Alternator
circuit

defective
if

continuity
exists
pilot
lamp
remains

lit

I

Check
fan
belt
tension

2

If
correct

remove

regulator

and

adjust
as

necessary
Pilot
lamp
remains
lit

Pilot

lamp
relay
coil
or

contact

points
out
of
order

Replace
regulator

Over
5

2
Volt

Pilot

lamp
does
not

light

Pilot

lamp
relay
assembly
is
in

good
condi

tion

SPECIFICATIONS
AND

SERVICE
DATA

Voltage
regulator

Model
HITACHI
TLl
Z
57

Regulating
voltage
with

fully
charged

battery
and

regulator
faced

downward
V
14
3
to
15
3
at
200C
680F

EE
26

ENGINE
ELECTRICAL
SYSTEM

Rotor

coil

inserting
resistance
n

n
10
5
at
20DC
68DF

10
Voltage
coil
resistance

Core

gap

Point

gap
rnm

in

mm
in
31

40

0
6

to
1
0

0
0236
to
0

0394

0
3
to
0
4
0

0118
to
0

0157
Voltage
coil

series
resistance

Smoothing
resistance
n

Charge
relay

Release

voltage

Voltage
coil
resistance
V
4
2

to
5

2
at
N
terminal

n
37
8
at
20DC
68DF

mm
in
0
8

to
1
0
0

0315
to

0
0394

mm
in
0
4
to
0

6
0
0157
to
0
0236
Core

gap

Point

gap

Standard

temperature
gradient
D
015

VIDC

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Troubles
Trouble

location
Causes
Remedies

Not

output
Alternator

Sticking
brushes
Correct
or

replace
brush
and
brush

spring

Dirty
brushes
and

slip
rings
Clean

Loose
connections
or
broken
leads

Retighten
or
solder
connection

Replace
leads
if

necessary

Open
stator
coil

Repair
or
replace
the

stator
coil

Open
rotor
coil

Replace
the
rotor

Defective
diodes

Replace
the
diodes

assembly

Shorted
rotor

Replace
the
rotor

Shorted
stator

Repair
or

replace
the

stator

Grounded
A
terminal

Replace
the
insulator

Broken
fan
belt
Replace
the
belt

EE
27

Low

output

Excessive

output
Regulator

Wiring

Alternator

Regula
tor

Wiring

Alternator

Regulatur
ENGINE

Faulty
voltage
regulator
point
con

tact

Broken
cable

or
disconnection
of

charging
cireui
t

Sticking
brushes

Low
brush

spring
tension

Dirty
slip

rings

Partially
shorted

ground
or

open

stator
coil

Partially
shorted

or

grounded
rotor

coil

Defective
diode

Loose
or
worn

fan
belt

Improper
voltage
regulator
adjust

ment

Faulty
voltage
regulator
point
con

tact
Defective

operation

Faulty
charging
circuit
lead

wire

connection

Loose

battery
terminal

Short
circuited
or
broken
neutral

wire

Improper
voltage
regulator
adjust

ment

Defective

operation

Improper
charge
relav

adjustment

detective

operation
and
or

faulty

point
contact

EE
28
Repair
or

replace
the

regulatur

Repair
or

replace

Correct
or

replace
brushes
if
neces

sary

Correct
or

replace
brush

Clean

Replace
the

stator

Replace
the
rotor

Replace
the
diode

assembly

Retighten
or

replace
the

belt

Check
the

voltage
regulator
op

eration
and

repair
or

replace
as

required

Repair
or

replace
the

regulator

Repair
or

replace

Retighten

Replace
the
wire

Check
the

voltage
regulator
op

eration
and

repair
or

replace
as

required

Check
the

charge
relay
operation

and

repair
or

replace
as

required