ECU DATSUN B110 1973 Service Manual PDF

ENGINE
ElECTRICAL
SYSTEM

Ambient

temperature
Rated

regulating
voltage

roC
OF
V

10
14

14
6
to
15
6

0
32

14
45
to
15

45

10
50
14
3

to
15
3

20
68
14
15

to
15
15

30

86
14

0
to
15
0

40
104

13

85
to
14
85

Note
8

Do
not
measure

voltage

immediately
after
driv

ing
Do
this
while

regulator
is
cold

b
To

measure
voltage
raise

engine
speed

gradual

ly
from

idling
to
rated

speed

c

Voltage
may
be

approximately
O
3V

higher

than
the
rated
for
two
to

three
minutes

after

engine
is
started
or
more

specifically
when

regulator
becomes
self
heated
Measurements

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

measuring
voltage
be
sure
to

meas

ure

surrounding
temperature
and
correct
measure

ments

according
to

the
table
in
the
left
hand
side

ADJUSTMENT

Voltage
regulator

As

the
result
of
above
measurement
when
the

regu

lating
voltage
is
deviated
from
the
rated
value

adjust
the

regulator
in
accordance
with
the

following
instructions

I

Inspect
contact
surface
and
if

rough
lightly
polish

the
surface
with
fine

emery
paper
500
or

600

2
Measure
each

gap
and

adjust
if

necessary
Adjust
the

core

gap
and

point
gap
in
that
order
No

adjustment
is

required
for
the

yoke
gap

J

Adjusting
core

gap

Loosen
the
screw
4
mm
0
1575

in
diameter
which

is
used
to
secure
the
contact
set
on

the

yoke
and
move

the
contact

upward
or
downward

properly
See

Figure

EE
53
t

2

I

I
EE056

4
mm
dia

0
1575
in

dia

screw

Cross
head

screwdriver
Contact
set

Thickness

gauge

Fig
EE
53

Adjusting
COTe

gap

4

Adjusting
point
gap

Loosen

the
screw
3

mm
0

1181
in
diameter
used

to

secure
the

upper
contact
and

move
the

upper
contact

upward
or
downward

adequately
See

Figure
EE
54

EE057

1
Thickness

gauge

2

3
mm
dia
0

1181
in

dia
screw
3
Cross
head
screwdriver

4

Upper
con

tact

Fig
EE
54

Adjusting
point
gap

5

Adjusting
voltage

Adjust
regulating
voltage
with
the

adjusting
screw

When

increasing
voltage
loosen
the

lock
nut
used
to

secure
the

adjusting
screw
and
turn
the

adjusting
screw

clockwise
When

decreasing
turn
this
screw
counterclock

wise
See

Figure
EE
55

EE

25

ENGINE
ElECTRICAL
SYSTEM

2

Leakage
due
to
defective

diaphragm

3

Stationary
side

and

moving
side
of
the

breaker

plate

are

sticked

Solution
for
1
is

to
make

complete
fastening
and
2
is

to

replace
it

with
a
new
one
Solution
for
3
is
as
follows

I
The

moving
side
of
the
breaker

plate
is

supported

by
three
steel
balls

at

upper
and
lower

sides

Make

sure
that

these
balls
work

smoothly

2

The

moving
side
of
the
breaker

plate
is

rotated
with

the

stationary
side

pivot
receiver

Make

sure
that
this

pivot
receiver

operates
correctly

When

assembling
be

sure
to

apply
three

steel
balls
to
the

upper
and
lower
sides
and
to

grease
them

DISASSEMBLY
AND

REASSEMBLY

Disassembly

When

the
distributor
is
disconnected
from

engine

position
of
distributor

and
rotor
head
for

housing
must
be

weB
remembered
or

marked

If

distributor
is
installed
incorrectly
it
does
not

operate
correctly
Disassembly
is

to
be
carried
out
in
the

following
sequence

I
Remove

cap
and
disconnect
rotor
head

2
When

removing
the
contact
set

first
unscrew
two
set

screws
one

to
one
and
a
half
of
full
turn

Remove
the

primary
lead

terminals
and
remove

the

contact
set
from
the

distributor

Fig
EE
66
Removal

of
contact
set

EE
33
3
Remove

the
vacuum
controller

Fig
EE
67

Disassembly
of
vacuum

controller

4
Loosen

two
screws
used
to
secure
the

breaker

plate

on
the

housing
and
remove
the

breaker

plate
The

clamp

terminal
and

lead
wire
can
also
be

removed

r

Fig
EE
6B

Removal

ofbTeaker
plate

5
To
remove
the
earn

remove
the

set
screw
first

since

the
shaft
head
is
fastened

by
the

screw
to
hold
the

cam

down

Fig
EE
69
Removal

of
cam

CHASSIS

3
Make
sure
that
the

wire
or
chain
used
to

suspend
the

engine
is

positioned
properly
so
that

no
load
is

applied
to

the

insulators
and

remove
the

nuts

completely

4

Lift

up
the

engine
and

separate
the

insulators
from

the

engine
mounting
brackets

l

J
o

II
f

T
io

I
t

i
1
A

t

t

I

21
u

I
1

Qj
1

It

I

j
fi
I
I

lt

y
Ii

Fig
ER
2

Removing
front
mounting

Reinstallation

Reinstall
the

engine
mounting
insulators
in

reverse

sequence
of
removal

noting
the

following
matters

Both
the
left
and

right
engine
mounting
insulators

are
used

commonly
However
when

installing
them

pay

attention
on
their

upper
and
lower
directions
When

they

are
installed

correctly
the

positioning
pin
is

projected

downward

f

9
POSITIONING
PIN

I
FRONT
CROSS
MEMBER

Fig
ER
3
Insulator

installinx
position
2

Shape
of
the

right
side
bracket
differs
from
that

of

the

left
side

bracket

Tighten
the
bolts
and
nuts

correctly

md

securely

Bolt
CD
V
Total
four

each
for

both
sides
Tightening
torque

kg
m

ft
Ib

1

6
to
2
1

11
6
to
15
2

0
9
to
I

2

6
5
to

8
7
Nut

@
i
Total
four
each

for

both
sides

@
CID

1

@

CD

l

Fig
ER
4
Front

mounting
installation

REAR
ENGINE
MOUNTING

Removal

Support
the
transmission
with

ajack
or

other

proper

stand

so
that
the

engine
does
not

drop
down

2
Remove
the

mount
member
installation
bolts
Now

the

engine
can
be

separated
from
the

body

3

The
mount
member
is

provided
with
an

opening
for

removing
and

installing
operations
Remove
the
nuts

and

separate
the
insulator
from
the
transmission

ER
2

ENGINE
REMOVAL
INSTAllATION

Fig
ER
5
Rear

mounting

4
Remove

four
bolts
and

separate
the
insulator
from

the

engine
mount
member

Reinstallation

Reinstall
the
rear

engine
mounting
in
reverse

sequence

of
removal

noting
the

following
matters

I

Tighten
the
nuts
and
bolts

correctly
and

securely

Lp

FRONT

FOR
MANUAL

TRANSMISSION
Nut

@

mount
member
insulator

Nut

@@

transmission
insulator

Bolt

CD@

mount
member

body
Tightening
torque

kg
m
ft
Ib

0

6
to
0
8

4
3
to
5
8

1

9
to
2
6

l3
to
18
8

3
2
to
4
0

23

1
to

28
9

Fig
ER
6
Rear

mounting
installation

2

Carefully
arrange
the

front
and

rear
directions
of
the

rear

engine
mounting
when

installing

tp

FRONT

FOR
AUTOMATIC
TRANSMISSION

Fig
ER
7

R
ar

mounting
specifications

ER
3

CLUTCH

CLUTCH

CONTENTS

DESCRIPTION

REMOVAL

DISASSEMBL
Y

INSPECTION
AND

ADJUSTMENT

Clutch

assembly
Cll

CL

2

CL
2

CL
2

CL
2

DESCRIPTION

The

clutch
is
a

single
dty
disc

diaphragm
spring

type

clutch
The

major

components
are
clutch

cover

pressure

plate

diaphragm
spring
and

wire

rings
The

clutch

disc
is

provided
with

riveted

pia
tes
on

both
surfaces

and
coil

springs
arranged
in
a

link
The
coil

springs
absorb

shock

while

engaging
the
clutch

softening
and

smoothing
clutch

30

1181

I
4J

I

m

I

I

5

O

N
l
l

9

p

1L
oz
l
t
O

Ii
N
lt

o

O

Vf

I

1

I

t
I

0

tN

00

f
M

g

1

co
0

00

U
N

N

y
Disc

assembly

Release

bearing
and

sleeve

REASSEMBL
Y
CL

3

CL

4

CL
4

CL
4

CL
5
Release

mechanism

REINSTALLATION

engagement

Release

bearing
sleeve
and

withdrawal
lever
are
used

to

control

clutch

engagement
and

disengagement

Each

part
of
the

clutch

assembly
is
secured
with
rivets

Therefore
when
a

trouble
is
uncorrectable

replace
the

clutch

assembly
wHh
J
new

assembly

93

53

3
682
JOOD4

33

Unit

mm
in

Fig
CL
l

Construction

of
clutch

ell

CHASSIS

fulcrum

type

The
mechanical

type
clutch
control

system
consists

of

pendent
clutch

pedal
clutch

control
cable
and
with

drawallever
The

withdrawal
lever
is
of
an

outer
fulcrum

type
which

provides
a

great
lever
ratio
and
thus
force

required
in

depressing
clutch

pedal
is
reduced

CLUTCH

PEDAL

Hydraulic
clutch

Removal

Remove
the
return

spring

2

Loosen
the
lock
nut
of
the
master

cylinder
push
rod

and

disconnect
the

push
rod
end

3

Remove
the
lock

nut
and
washer

of
the

pedal
shaft

and

remove
the

pedal
lever

Inspection

Thoroughly
clean
all
disassembled

parts
indicated

below
and

carefully
check
them

for
wear

damage
and

other
abnormal
conditions

Repair
or

replace
them

with

new
ones
if

required

f

fS

C5

J

dJ

YII

10

1

@
c
i
@

j

1

4

K

Clutch

pedal
free
trrlel

30
mm
1
181

nl

00

@

P

IO
Pedal
head
rubber

2

Return

spring

3

Pedal
lever
bush

4
Fulcrum

pedal
pin
etc

Reinstallation

Reinstall
the

clutch

pedal
in
reverse

sequence
of

removal

Adjustment

I

Adjust
pedal
pad
height
to
143
5
mm
5
65
in

without

stopper
The

adjustment
is

made

by
selecting
and

applying
shim
s

having
adequate
thickness

Be

sure
to
use
shims

having
same
thickness
for

both

upper
and
lower

2

Next

adjust
the

pedal
stopper
properly
so
that
the

pedal
pad
height
is

141
5
mm
5
57
in
and
secure
the

position
with
lock

nut

Note
Make
sure
that
chassis

grease
has
been

applied
to

the

leG
marked

portions
two

places
Grease
if

required

Adjusting
shim

Part
number

Thickness
mm
in

30611
27260

30612
27260

30613
27260
1

6
0
0630

0

8
0
0315

0
5
0
0197

I

2

3
Adjusting
shim

Pedal
lever

Pedal

stopper

Unit
mm

inl

Fig
CL
J5

Pedal

height
adjustment

CL
6

CLUTCH

CLUTCH

PEDAL
AND
CLUTCH

CONTROL
CABLE

Mechanical
clutch

Removal

Loosen

the
control
cable

adjusting
nut
and
discon

nect
the

control
cable
from

the
withdrawal
lever

III
Adjusting
nut
2

I
Lock
nut

Fig
CL
16
Clutch

cunITol
cable

11
I
Withdrawal
lever

I
2

I
Clutch
control
cable

Fig
CL
17

Disconnecting
clutch
control
cable

2

Unhook
the

clutch

pedal
return

spring

3
Remove

the
clutch
brake

Pedal
installation
bolts
and

remove
the

clutch

pedal
and

control
cable
1

I
Return

spring

31
au
tch

pedal

2
Fulcrum

pedal
pin

Fig
CL
I8

Removing

pedal
installation
bolt

Inspection

Thoroughly
clean
all

disassembled

parts
indicated

below
and

carefully
check

them
for

wear

damage
and

other
abnormal
conditions

Repair
or
replace
as

required

Control
cable

2

Pedal
head
rubber

3

Pedal
lever
bush

4
Fulcrum

pedal
pin

5

Others

Reinstallation

Reinstall

the
clutch

pedal
and
clutch
control

cable
in

reverse

sequence
of
removal

Alljustment

Adjust
the

pedal
stopper
so

that

pedal
height
is
in

range
from
136
5
to
146
5

mm
5
4

to
5

8
in
and
secure

the

position
with

lock
nut

completely

2

Next

adjust
the
control
cable

adjust
nut
so

that

clutch

pedal

play
is
in

range
from
II

to
15

mm
0
433

to

0
591
in
at

the
center
of
the

clutch

pedal
pad
and
make

sure
that

play
at
P

point
of

the
withdrawal

lever
is
in

range
from
3

0
to
4
0

mm

0
1181
to
0
1575
in

Secure

the

alignment
with

lock
nut

completely

CL
7

CLUTCH

CLUTCH

MASTER
CYLINDER

Hydraulic
clutch

3

V

t

2

3

4

5

6

7

8

9

10

tt

12

13
Snap
ring

Dust
cover

Push
rod

Clutch

piston

Piston

spring

Inlet
valve

spring

Inlet
valve

Spring
retainer

Shim

Inlet
valve
release

pin

Body

Oil
reservoir

Oil
reservoir

cap
6

D
ll

Q

6

i

0

l

Y
r@

cb

Fig
CL
21
Clutch
master

cylinder

Removal

Disconnect
the

push
rod

from
the
clevis

2

Disconnect
the
clutch
line
from
the
master

cylinder

and
drain
fluid

3
Remove

the

securing
bolts
and
remove
the

master

cylinder
assembly
from
the

vehicle

Disassembly

Remove
the
filler

cap
and

drain
fluid

2

Pull
back
the
dust
cover
and

remove
the

snap

ring

The

stopper
push
rod

piston
assembly
primary
cup
and

return

spring
assembly
can
be

removed

Inspection

Thoroughly
clean

all

parts
with
brake

fluid
before

inspection

CL
9
1
Check

the

cylinder
and

piston
for
uneven
wear

or

damage
Replace
if

required

2

When
clearance
between
the

cylinder
and

piston
is

more
than
0
15
mm
0
0059

in

replace
the

cylinder

3

Replace
the

piston
cup

primarily
whenever
the

master

cylinder
is

disassembled
It
must
also
be

replaced

when
wear
or

deforma
tion

due
to

fatigue
or

damage
is

found

4
Check

the
dust

cover
oil
reservoir
filler

cap
and

clutch
line

for

damage
or
deformation
If

abnormal

condition
is

found

replace
with

new
one

Reassembly

Reassemble
the

master

cylinder
assembly
in
reverse

sequence
of

disassembly

noting
the

following
matters

The

piston
cup
should
be

soaked
in
brake

fluid

before

reassembly
Install
the

piston
cup
carefully
so
that

it
is

correctly
faced

CLUTCH

When
the

adjusting
nut
is
returned

I
1
4
turns
the

withdrawal
lever
end
is
returned

to
1
0

to
2
0

mm
0
0394

to
0
0787
in

and
clearance
between
the

release

bearing

and

diaphragm
spring
fingers
becomes
0
7
to
I
4
mm

0

0276
to
0
0551
in

9

@

t

O
to

2
0

0
0394
to
0
0787

Unit
mm
in

I
i

I
I
I
Release

bearing

Diaphragm
spring
Lock
nu
t

Adjusting
nut

Withdrawal
lever

Fig
CL
23

Adjusting
withdrawal
lever

play

Mechanical
clutch

Adjust
the

clutch

control
cable

adjust
nut
so

that

play

at
the
withdrawal
lever

end
is
3
0

to
4
0
mm
0
1181

to

0

1575
in

and

securely
tighten
the

lock
nut
Clearance

between
the

release

bearing
and

diaphragm
spring

fingers

will
become
0
9

to
1
2

mm
0
0354
to
0

0472
in
3
0

to
4
0

0
1181
to
0

1575

@

0
9
to

1
2

I
0
0354

to
0

0472

1

j

E

1

Unit
mm
in

I
I
I
I
Diaphragm
spring

Clutch
control
cable
Withdrawal
lever

Release

bearing

Fig
CL
24

Adjusting
withdrawal
lever

play

BLEEDING
CLUTCH
SYSTEM

Hydraulic
clutch

1
Remove
the
bleed

screw
dust

cap
from
the

operating

cylinder

2

Open
the
bleed
screw

approximately
three

quarters

of
a
turn
Attach
a
tube

immersing
the

open
end
into
a

clean
container
which
contains
a
small

amount
of
brake

fluid

3
Fill

the
master

cylinder
reservoir
with
the
recom

mended
fluid

4

Depress
the

clutch

pedal
quickly
while

keeping
it

down

retighten
the
bleed

screw
and
allow
it
to

return

slowly
Repeat
this

pumping
action

until
the
fluid

entering
the
container
is

free
from
air

bubbles

5
Screw

up
the
bleed
screw

on
a
down

stroke
of
the

pedal
remove
the

bleed
tube

and

replace
the
dust

cap

CL
11

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