1973 DATSUN B110 check engine light

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

SPECIFICATIONS

Make
and

type

Primary
voltage
v

Spark

gap
mm
in

Primary
resistance

at
200C
680

F
n

Secondary
resistance

at
200C
680F
Kn

External
resistor

at
200C
680
F
n

Applied
resistor
HANSHIN
HITACHI

H5
15
2
C6R
601

12
12

more
than
7

more
than
7

0
28
0
28

1
17
to
I
43
l
l
7

to
I
43

11
2
to
16
8
11
2

to
16
8

l
3tol7
l
3tol7

RC
15
5560R
151O

SPARK
PLUG

CONTENTS

DESCRIPTION

INSPECTION

CLEANING
AND

REGAP
EE
37

EE
37

EE
38

DESCRIPTION

The

spark
plugs
are
of
the
resister

type
having
14
mm

0
551
in
threads
and
0
8
to
0
9
mm
0
031
to
0
Q35
in

gap

Note
All

spark
plugs
installed
on
an

engine
must

be
of

the

same
brand
and
number
of
heat

range

INSPECTION

1
Remove

spark
plug
wire

by
pulling
on
boot
not
on

wire
itself

2
Remove

spark
plugs

3

Check
electrodes
and
inner
and
outer

porcelains
of

plugs
noting
the

type
of

deposits
and
the

degree
of

electrode
erosion

Refer
to

Figure
EE
74

Normal
Brown

to

grayish
tan

deposits
and

slight
elec

trode
wear
indicate
correct

spark

plug
heat

range
SPECIFICATIONS
AND

SERVICE
DATA

TROUBLE

DIAGNOSES
AND

CORRECTIONS
EE
38

EE
39

Carbon
fouled

Dry
fluffy
carbon

deposits
on
the

insula

tor
and

electrode
were

mostly
caused

by
slow

speed

driving
in

city
weak

ignition
too
rich
fuel
mixture

dirty
air

cleaner
etc

H
is

advisable
to

replace
with

plugs
having
hotter
heat

range

Oil
fouled
Wet

black

deposits
show

excessive
oil

en

trance
into
combustion

chamber

through
worn

rings

and

pistons
or
excessive

clearance
between

valve

guides

and

stems
If
the
same

condition
remains

after

repair

use
a

hotter

plug

Overheating
White
or

light
gray
insulator
with
black

or

gray
brown

spots
and

bluish
burnt
electrodes
indicate

engine

overheating
Moreover
the

appearance
results

from
incorrect

ignition
timing
loose

spark
plugs
low

fuel

pump
pressure
wrong
selection

of
fuel
a

hotter

plug
etc

H
is
advisable
to

replace
with

plugs
having
colder

heat

range

EE
37

CLUTCH

Operating
cylinder
clutch

Operating
cylinder
diameter

T
Ilhtening
torque
19
05
mm
0
750
in

Clutch

assembly
securing
bolt
1
5
to
2
2

kg
m

10
8
to
15
9

ft
Ib

TROUBLE
DIAGNOSES
AND

CORRECTIONS

Condition

Noises
audible

on

pedal

depression

Noises
audible

on

pedal
release
Probable
cause

Excessively
worn

damaged
or

poorly
lubri

cated
release

bearing

Seized
release

bearing
and

diaphragm

spring

fingers

Insufficient

pedal
free
travel

Weakened

unhooked
or
broken
clutch

pedal

return
and
control

springs

Weakened
clutch
withdrawal
lever
return

spring
broken
or
unhooked

Excessive

play
between
clutch
disc
hub
and

drive
shaft

spline

Misalignment
of
clutch
disc
to

flywheel

causes

slight
movement
of

disc
hub
in

respect
of

facings

This
noise
is

especially
audible
with

engine

idling
or

at
low

speed

Broken
or
weakened
clutch
disc
cushion

springs

Insufficient

pedal
free
travel

Weakened
unhooked
or
broken
clutch
con

trol
and

pedal
return

prings

CL
13
Corrective
action

Replace
the

bearing
which

being
cased

cannot
be

greased
inside

Replace
the
release

bearing
Clean

diaphragm

spring
fingers
with
metal
brush
and
smooth

out

bearing
contact
faces
with
felt

polishers

Readjust
pedal
free
travel

correctly

Set

springs
in

position
or

replace
them
if

weakened
or

snapped

Replace
the

spring
or
hook
it

up
as

required

Replace
the
clutch
disc
and

ensure
that

clearance
between

hub
of
new

clutch
and

drive
shaft
is

within
0
50
mm
0

0197
in

endwise
and
0

20
mm
0

0079
in
crosswise

When
clearances
exceed
above
limits

replace

the
drive
shaft
also

Set
level
of
clutch
disc
with
clutch
disc
in

place
on

drive
shaft
set
it
under

slight

rotation
and
check
for
no
run

out

using
a

scriber

Replace
the
clutch
disc

Set

pedal
free
travel

correctly

Check
the

springs
for
correct

position
and

replace
them
if

necessary