belt DATSUN B110 1973 Service User Guide

Air
intake

system
in

trouble

Overheating

Overcooling

Others

NOISY

ENGINE

Car

knocking

Car
knock
when

coasting
ENGINE

Diny
ur

clogged
fuel
strainer

Fuel

pump
will
not
work

properly

Clogged
carburetor

jets

Clogged
air
cleaner

Air

inhaling
from
manifold

gasket
or
carbu

retor

gasket

Insufficient
coolant

Loosened
fan
belt

Worn
or
defective
fan
belt

Defective
thermostat

Defective
water

pump

Clogged
or

leaky
radiator

Defective
radiator
filler

cap

Air

mixing
into

cooling
system

Improper
grade

engine
oil

Incorrect

ignition
timing

Defective
carburetor

lean
mixture

Defective
thermostat

Low

octane
fuel

Improper
tire

pressure

Dragging
brake

Slipping
clutch

Overloading
to

engine

Carbon

knocking

Timing
knocking

Fuel

knocking

Preignition
misusing
of

spark
plug

Incorrect
throttle

opener
adjustment

Trouble
in
PCV
valve

ET
30
Replace

Repair
or

replace

Disassemble
and
clean

Replace
element

Replace
gasket

Replenish

Adjust

Replace

Replace

Replace

Flush

repair
or

replace

Replace

Retighten
each

part
of

cooling
system

Replace
with

proper
grade
oil

Adjust

Overhaul
carburetor

Replace

Replace
with

specified
octane
fuel

Adjust
to

the
specified

pressure

Adjust

Adjust

Use

right

gear
in

driving

Disassemble
cylinder
head
and
remove

carbon

Adjust
ignition
timing

Use

specified
octane
fuel

Use

specified
spark
plug

Adjust
throttle

opener

Replace
PCV
valve

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

WATER
PUMP

The
water

pump
is
a

centrifugal
type
water

pump
with

an
aluminum
die
cast

pump
body
The
volute
chamber
is

built
into
the
front

cover
assembly
and

a

high
pressure

sealing
mechanism
is

adopted
to

prevent
the
water
leakage

and
noise

completely

Note
The
water

pump
must
not
be
disassembled
since

the

bearings
are

shrinkage
fitted
to
their
bores
If

any
part
of
water

pump
is
found
defective

replace

pump
assembly

o

C0026

Fig
CO
2
Water

pump
and

front
cover

Removal

Fig
CO
3
Water

pump
removal
Drain

cooling
water

completely

2
Take

the
fan
belt
off
the

pulley

3
Remove
fan
and

pulley

4
Remove
the
water

pump

THERMOSTAT

A

pellet
type
thermostat
is

used
in
the
wa

ter
outlet

passage
to

control
the
flow
of
coolant

providing
fast

engine
warm

up
and

regulating
coolant

temperature
A

wax

pellet
in
the

thermostat

expands
when

heated
and

contracts
when

cooled
The

pellet
is
connected

through
a

piston
to
a
valve

and
when
the

peUet
is
heated

pressure
is

exerted

against
a
rubber

diaphragm
and
the
valve

opens

As
the

pellet
is

cooled
the
contraction

allows
the

spring

to
close
the
valve

Removal

Drain

cooling
water

2
Remove

radiator
hose

3
Remove
water
outlet
elbow

Then
take

out
the

thermostat

11
I
Thermostat

12
Water

outlet

Fig
CO
4
Thermostat
removal

Inspection

To
test
the
thermostat
for

proper
operating
tern

perature
submerge
the
unit
in
a
container
of
water
Heat

the
water
and
observe

the
temperature

CO
2

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