torque DATSUN B110 1973 Service Manual Online

ENGINE

operating
mechanism

Adjust
valve

clearance
at

following
four

points
while

engine
is
still

hot

G
Exhaust

valve
of
No
1

cylinder

CV
Intake
valve

of
No
1

cylinder

CID
Intake
valve

of
No
2

cylinder

CID
Exhaust
valve
of
No
3

cylinder

Note
Numbers
in

parenthesis
agree
with
those
in

ac

companying
sketch

I

Fig
BY

1

Adjusting
valve
clearance

4

Again
rotate

crankshaft
one
turn
so
that
No
4

piston

is
in

top
dead
ce
lter
on
its

compression
stroke

Adjust

follnwing
valves

@
Exhaust
valve
of
No
2

cylinder

@
Intake

valve
of
No
3

cylinder

f
Intake
valve

of
No
4

cylinder

@
Exhaust
valve

of
No
4

cylinder

Adjustment
should
be

made
while

engine
is
hot
After

all

valves
have

been

adjusted
correctly
tighten
lock
nut

firmly
to

secure
the

adjustment

Vah
e
clearance

Hot
Intake

0
35

mm
0
014
in

Exhaust
Checking
and

adjusting
drive

belt

II

I

Fig
ET
2

Adjusting
drive
belt

tension

I

Check
for
a

cracked
or

damaged
V

belt

Replace
if

defective

2

Adjust
the
belt
tension
if

necessary

Belt
deflection
when

thumb

pressure
of
10

kg
22
0
lb

is

applied
midway
between

pulleys
10
to
15
mm

0
394

to
0
590
in

Retightening
cylinder
head
bolts

manifold
nuts

and
carburetor

securing

nuts

Cylinder
head
bolts

When
the

engine
is
in

cold

tightening
should
be
made

in

several

steps
and
in

sequence
shown
in

Figure
EM
82

page
EM
31

starting
with
the
center

toward
the

ends

Tightening
torque

1st
turn

2nd
turn
4

0
to
4
5

kg
m
29
to
33

ft
lb

5
5

to
6
0

kg
m

40
to
43
ft
lb

Then
warm

up
the

engine
and

retighten
the
bolts
to
the

specification
of
hot
condition

Tightening
torque
hot

6
0

to
6
5

kg
m
43

to
47
ft
lb

Other

tightening
torque

Manifold
nuts
0
9
to
14

kg
m
6
5
to
10
ft
lb

Carburetor
nuts
0
5

to
LO

kg
m
3

6
to
7
2
ft
lb

Checking
engine
oil

Oil

capacity
of

engine
including
oil
filter

ET
2

ENGINE

4
Install

a

timing
light
on
No

cylinder
spark

plug

wire
and
install

a
tachometer

5

Set

idling
speed
to

approximately
800

rpm

6

Check

ignition
timing
if

it
is
50BTDC
Before

Top
of

Dead
Center

by
the

use
of

timing
light

If

necessary
adjust
it

as
follows

Loosen
set
screw
to
such
an
extent
that

distributor
can

be
moved

by
hand

2

Adjust
ignition
timing
to
50BTDC

3

Lock
distributor

set
screw
and
make
sure
that

timing

is
correct

Fig
ET
9

Checking
ignition
timing

Ignition
timing
degree
50
B
T
D
C

Checking
or

replacing
distributor

breaker

point
condenser
and

spark

plugs

Distributor
breaker

point

Check
distributot
breaker

points
for
abnormal

pitting

and
wear

Replace
if

necessary
Make
sure

they
are
in

correct

alignment
for
full
contact
and
that

point
dwell

and

gap
are
correct
Clean
and

apply
distributor

grease

to
earn
and
wick

Note
Do
not

apply
grease
excessively
Distributor

Point

gap
0
45
to
0
55
mm

0
018

to
0
Q22
in

49
to
55

degrees
Dwell

angle

ET004

Fig
ET
10

Checking
distributor

point
gap

Condenser

I

Clean
outlet
of
condenser
lead

wire
and
check
for

loose

set
screw

Retighten
if

necessary

2

Check
condenser

capacity
with
a

capacity
meter

Condenser
insulation
resistance

may
be
also
checked

using
a

tester

by
adjusting
its

range
to
measure

large

resistance
value
When
condenser
is
normal
the

tester

pointer
swings
largely
and

rapidly
and
moves

gradually

back

to
the

infmite
side
When
the

pointet
does

not

stay
still
or
it

points
zero
in
resistance

replacement
is

necessary

Condenser

capacity

0

221LF
Micro
Farad

Condenser
insulation
resistance

5
Mn

Mega
ohms

Spark

plugs

Remove

and
clean

plugs
in

a
sand
blast
cleaner

Inspect

each

spark
plug
Make
sure
that

they
are
of
the

specified
heat

tange
Inspect
insulator
for
cracks
and

chips
Check

both
center
and

ground
electrodes
If

they
are

excessi
ely
worn

replace
with
new

spark

plugs
File
center
electrode
flat

Set
the

gap
to
0
8
to

0

9
rom
0

031
to
0
035
in

using
the

proper

adjusting

tool

Tighten
plugs
to

1
5
to
2
0

kg
m
11
0
to
15
0

ft

lb

torque

ET
6

EMISSION
CONTROL
AND

TUNE
UP

Checking
and

adjusting
dash

pot

automatic
transmission
model

only

Check

operation
of
dash

pot
It
should

not
be
cracked

or

bound
It

is
also
essential
to
check
to
be
certain

that
it

is
in

correct

adjustment

L
Check
to
be
sure
that
dash

pot
contacts

stopper
lever

when

engine
speed
reaches
1
900

to
2

000

rpm

2

Engine
should
be
slowed
down
from
3

000
to
1

000

rpm
within
a
few

seconds

Readjust
dash

pot
or

replace
it
with
a
new
one
if
it

fails

to
meet

the
above

conditions

Checking
carburetor
return

spring

Check
throttle
return

spring
for

sign
of

damage
wear

or

squareness
Discard

spring
if
found
with

any
of
above

excessively
beyond
use

Checking
choke
mechanism

choke
valve
and

linkage

1

Check
choke
valve
and

mechanism
for
free

operation

and
clean
or

replace
if

necessary

A

binding
condition

may
have

developed
from

petro

leum

gum
for
motion
on
choke
shaft
or

from

damage

2

Check
bimetal
cover

setting
position
The

index
mark

of
bimetal
cover
is

usually
aligned
at
the

middle

point
of

the
scale

Note
When
somewhat
over
choked
turn
bimetal

caver

clockwise

slightly

3
Prior
to

starting
check
to
be
sure
that

choke
valve

closes

automatically
when

pressing
down
on
accelerator

pedal

Should
it
fail
to
close

automatically
the
likelihood
is

that
fast
idle
cam
is
out
of

proper

adjustment
or

that

bimetal
is

not

properly
adjusted
calling
for

adjustment

Refer
to
Carburetor
in
Section
EF

Page
EF
15
Checking
anti

dieseling
solenoid

If

engine
will
not

stop
when

ignition
switch
is
turned

off

this
indicates

a

striking
closed
solenoid
valve

shutting
off

supply
of
fuel
to

engine
If
harness
is
in

good

condition

replace
solenoid
as
a
unit

To

replace
proceed
as
follows

Removal

and
installation

of
anti

dieseling
solenoid

Removal

Solenoid
is
cemented

at

factory
Use

special
tool

STl
91
50000
to
remove
a

solenoid

When

this
tool
is

not
effective
use
a

pair
of

pliers
to

loosen

body
out
of

position

lnstalltion

I
Before

installing
a
solenoid
it
is

essential
to
clean

all
threaded

parts
of
carburetor

and
solenoid

Supply

screws
in
holes
and
turn
them
in

two
or

three

pitches

2
First
without

disturbing
the
above

setting
coat
all

exposed
threads
with
adhensive
the

Stud
Lock
of

LOCTlTE
or

equivalent

Then

torque
screws
to
35
to
55

kg
cm
30

to
48
in

lb

using
a

special
tool
STl9150000

After

installing
anti

dieseling
solenoid
leave
the
carbu

retor
more
than
12

hours
without

operation

3

After

replacement
is
over
start

engine
and
check

to
be
sure
that
fuel
is
not

leaking
and
that
anti

dieseling
solenoid
is
in

good
condition

Notes
a
Do
not
allow
adhesive

getting
on
valve

Failure
to
follow
this
caution
would
result
in

improper
valve

performance
or
clogged
fuel

passage

b
I
n

installing
valve
use
caution
not
to
hold

body
directly
Instead

use

special
tool

tighten

ing
nuts
as

required

ET
9

EMISSION
CONTROL
AND
TUNE
UP

SERVICE
DATA
AND

SPECIFICATIONS

Valve

clearance

Hot
Intake

Exhaust
mm
in

rom

in

rom
in

kg
lb
0
35
0
014

0
35
0
014

10
to
15
0
394
to
0
591

10
22

Fan
belt
tension

Tightening
torque
Cold

Cylinder
head
bolts

kg
m

ft
lb

1st

turn

2nd
turn

Re

tightening
torque
Hot

Manifold
nuts

Carburetor
nuts
4
0

to
4
5

29
to
33

5
5

to
6
0
40

to
43

6
0

to
6
5
43

to
47

0
9

to
I
4

6
5
to
10

0
5

to
1
0
3

6
to
7
2

1
5

to
2
0
II
to
14

Spark
plugs

Oil

capacity
of

engine
including
oil
ftIter

Maximum
L

US

gal
Imp
gal

L

US

gal
Imp
gal
3
3

U
14

2
3

Ii
Minimum

Water

capacity
of

cooling
system

Without
heater

L
US
gal

Imp
gal

With
heater

L

US

gal
Imp
gal
4
2
1

U

4
9

I
4
11

12
5

to
14
5

I78
to
206
350

Compression
pressure
at

rpm
kg
em

psi

Battery
specific
gravity

Permissible
value
Fully
charged
value

at
200C
680F

Frigid
climates

Tropical
climates

Other

elima
tes
Over
1
22

Over
1
18

Over
1
20
1
28

1
23

1
26

Ignition
timing
degree

Distributor
50
B
T
D
C

Condenser

capacity
mm
in

degrees

IlF
Micro
Farad
0
45
to

0
55
0
018

to
0
022

49
to
55

0
22

5
Point

gap

Dwell

angle

Condenser
insulation
resistance
Mil

Mega
ohms

ET
25

ENGINE

Defective

spark
plug

Improper
ignition
timing

Defective

ignition
coil

Disconnection
of

high
tension

cable

Loose
connection
or
disconnection
in

prima

ry
circuit

Lack
of
fuel

Dirty
fuel
strainer

Dirty
or

clogged
fuel

pipe

Fuel

pump
will
not
work

properly

Carburetor

auto
choke
will
not
work

prop

erly

Improper
float
level

adjustment

Improper
idling

Dirty
or

clogged
carburetor

Damaged
anti
dieseling
solenoid

Clogged
breather

pipe

Incorrect

spark
plug
tightening
or
defective

gasket

Improper
grade
engine
oil

or

viscosity
drop

ping

Incorrect
valve
clearance

Compression
leak
from
valve
seat

Sticky
valve
stem

Weak
or

defective
valve

springs

Compression
leak
at

cylinder
head

gasket

Sticked
or
defective

piston
ring

Worn

piston
ring
or

cylinder

Troubleshooting
procedure

Pour

engine
oil
from

plug
hole
and

then
measure
cylinder
compression
Clean

adjust
plug
gap
or

replace

Adjust

Replace

Replace

Repair
or

replace

Supply

Replace

Clean

Repair
or

replace

Check
and

adjust

Correct

Adjust

Disassemble
and

clean

Replace

Clean

Tighten
to
normal

torque
or
replace

spark
plug
assembly

Replace
with

proper
grade
oil

Adjust

Remove

cylinder
head
and

lap
valves

Correct
or

replace
valve

Replace
valve

springs

Replace
gasket

Replace

piston
ring

Overhaul

engine

Compression
increases
Trouble
in

cylinder
or

piston
ring

Compression
unchanged
Compression
leak
from
valve
cylinder

head
or
head

gasket

ET

28

ENGINE
MECHANICAL

Standard
Maximum

Crankshaft
bend

mm
in
0
05

0

0020
0

015

0

0006

Note

When
measuring
bend
use
a
dial

gauge

Bend
value
is

a
half
of
the
reading
obtained
when

the
crankshaft
is
turned
once
with
the
dial

gauge

applied
to

its
center
journal

3

After
regrinding
the
crankshaft
fmish
it
to
the

necessary
size
indicated
in
the
lists

on

pages
EM
25

by

using
an

adequate
undersize
bearing
according
to
the

extent
of

required
repair

4
Install
the
crankshaft
in
the

cylinder
block
and

measure
the
thrust
clearance

Fig
EM
60

Crankshaft
end

pldy
check

Standard
Limit

Crankshaft
free
end

play
rom

in
0
05
to
0
15

0
0020
to
0
0059
0
30

0
D118

5
Check
the

main
drive
shaft

pilot
bearing
at
the
rear

end
of
the
crankshaft
for
wear
and

damage

Replace
it
if

any
defects
are
detected
BUSHING
AND
BEARING

Measuring
main

bearing

clearance

Check
all

bearings
and

bushings
for
seizure
melt
scar

and

burr

Replace
bushings
if

any
defects
are
detected

2

Wipe
off
oil

and
dust

especially
the
rear
of
the

bushing

3

Set
the
main

bearing
on
the

cap
block

Scale

Plastigage

EM141

Fig
EM
61

Plastigage

4
Cut
a

plastigage
to
the

width
of
the

bearing
and

place

it
in

parallel
with
the
crank

pin
getting
clear

of
the
oil

hole

Install
the

cap
on
the
assembly
and

tighten
them

together
with
the

specified
torque

Tightening
torque

5

0
to
6

0

kg
m
36

to
43

ft
lb

Note
Be

sure
not
to
turn

the
crankshaft
when
the

plastigage
is

inserted

5
Remove
the

cap
and
measure
width
of
the

plastigage

at
its
widest

part
with
the
scale

printed
in
the

plastigage

envelope

EM
21

ENGINE

Pig
EM
62

Bearing
clearance
check

Measuring
connecting
rod

bearing
clearance

Measure

connecting
rod

bearing
clearance
in
the

same

manner

Tightening

torque

3
2
to
3

8

kg
m
23

to
28
ft
Ib

Bearing
oil
clearance

Standard
Wear
limit

Main

bearing

clearance

rom
in
0
020

to
0
062

0

0008
to
0
0024
0
1

0
0039

Connecting
rod

bearing

clearance

mm
in
0
020

to
0
050

0
0008
to

0
0020
0
1

0
0039

2
If
clearance
exceeds
the

specified
value

replace

bearing
with
an

undersize

bearing
and

grind
out
the

crankshaft

journal
adequately
Fig
EM
63

Bearing
clearance
check

Fitting
crankshaft
bearings

I
Set

the
bushings
on
the
main

bearing
cap
and
the

cylinder
block

bearing
recess
and

tighten
the

cap
bolts
to

the

specified
torque

Tightening
torque

5
0
to
5
3

kg
m
36
to
38
ft
lb

2
Loosen
the

cap
bolt
on

one
side
and
measure

clearance
between

the

cap
and

cylinder
block
side

n
n

u

ii
Bearing

6
Weight

EM143

Fig
EM
64

Bearing
crush
check

EM
22

ENGINE
MECHANICAL

3
Ascertain
that
the

clearance
is
within
double
the

figure
listed
below

If
it
is

not

replace
the

bearing

4

Handle
the

connecting
rod

bearing
in
the

same

manner

Connecting
rod

cap
tightening
torque

3
2

to
3
8

kg
m
23

to
28
ft
lb

Bearing
crush

All
main

bearing

mm
in
o
to

0
03
0
to

0
0012

All

connecting
rod

bearing
mm

in
0
Ql5
to
0
040

0

0006
to
0
0016

Main

bearing
undersize

Bearing
size

Bearing
top
Crank

journal

1
100

thickness
mm
in

diameter
mm
in

STD
1
835
to
1
822

49
951
to
49
964

0
0722
to
0
0717
1

9666
to
1
9671

25
1

960
to
1
947

49701
to
49
714

undersize
0

0772
to
0

0767
1

9567
to

1
9572

50
2
085
to
2
072

49451
to
49

464

undersize
0
0821
to
0

0816
1

9469
to
1

9474

75
2
210
to
2
197

49
201
to

49
214

undersize
0
0870
to
0
0865

1
9370

to
1

9376

100
2
335
to

2
322
48
951
to

48
964

undersize
0

0919
to
0

0914
1
9272
to
1
9277
Connecting
rod

bearing
undersize

Bearing
top
Crank

pin

Bearing
size

thickness
mm
in
diameter

mm
in

1
500
to

1
508
44
961

to
44
974

0
0591
to
0
0594
1
8489

to
I

7706

8

1
540

to
1
548

44

881
to
44
894

undersize
0
0606
to
0

0609
1
7670
to
I
7675
STD

12
1
560

to
1
568
44
841

to
44
854

undersize
0
0614
to
0

0617
I
7654
to
I
7659

25
1
625
to
1

633
44
711

to
44
724

undersize
0
0640

to
0

0643
1
7603
to
I
7608

50
I
750
to

1
758
44
461
to
44
474

undersize
0
0689
to
0

0692
1
7504
to
I
7509

75
1
875
to
1
883
44
211
to
44
224

undersize

0
0738
to
0
0741
1
7406
to
I
7411

100
2
000
to
2
008
43
961
to
43
974

undersize
0
0787
to
0
0791
1
7307
to
I

7313

Fitting
camshaft

bushings

When
clearance
exceeds
the
specified
value
remove

all
camshaft

bushings
by

using
the

special
tool
and

replace

with
service

parts

Notes
3
Coincide
the

bearing
oil
hole
with
the
oil
hole

of
the

cylinder
block
side

b
After

replacing
all
bushings
correct
the
bear

ings
by
line

boring

c

I
nstall
the

taper
plug
into
the

cylinder
block

applying
the

sealing
agent

Fig
EM
65

Replacing
camshaft
bushings

EM
23

ENGINE
MECHANICAL

Standard

mm
in

Camshaft

sprocket

run
out

Thrust
deviation
O
OIS

0
0006

Locating
plate

thrust
clearance
0
02
to

0
08

0
0008
to
0
003
Wear
limit

mm
in

less
than

0

0

0039

O

OS

0

0020

0
1

0

0039

3

Check
the

chain
for

damage
excessive

wear
and

stretch
at

its
roller

links

Replace
chain
if

defective
Flyw
heel

I

Check
the

clutch
disc
contact

surface
of
the

flywheel

for

damage
and

wear

Repair
or

replace
if

necessary

2

Measure
deviation
of
the

clutch
disc
contact
surface

with
a
dial

gauge

If
it

exceeds
0
2

mm
0
0079
in

replace
it

3

Check

tooth
surfaces
of
the

ring
gear
for

flaw
and

wear

Replace
if

necessary

Note

Replace
the

ring
gear
at

about
180
to

2000C
356

to
3920

Fl

ENGINE
ASSEMBLY

PRECAUTION

CYLINDER
HEAD

PRECAUTION
CONTENTS

EM
25

EM

25

Use

thoroughly
cleaned

parts
Particularly
make

sure

that
oil

holes
are
clear

of

foreign
matter

2

When

installing
sliding
parts
such
as

bearings
be

sure

to

apply
engine
oil

to
them

3

Use
new

packings
and
oil
seals

4

Keep
tools

and
work
benches
clean

S

Keep
the

necessary
parts
and
tools
near
at
hand

6
Be
sure
to

follow

specified
tightening
torque
and

orders

CYLINDER
HEAD

Assembly
of
valve
and
valve

spring

Set
the
valve

spring
seat
in

position
and
fit
the
valve

guide
with
the

oil

lip
seal

Assemble
the

parts
in
order
valve

spring
spring

retainer

valve
collet
and

valve
rocker

guide
PISTON
AND
CONNECTING
ROO

ASSEMBLING
ENGINE
EM
25

EM
26

I
I

11

00
I
I

I

t

I
J

ftr

J

J

1

l

J

r

N

1

n
r

VI

I

I

C

I

L

I

Fig
EM
68
Valve
installation

Note
Make

sure
that
the
valve
face
is
clear
from

foreign

matters

PISTON
AND

CONNECTING

ROD

Assemble

piston
piston
pin
and

connecting
rod

assorted

according
to

cylinder
number

for

every
cylinder

EM
25

ENGINE

ST130300
1

EM156

Fig
EM
69

Piston

pin
installation

Fig
EM
70
Piston
and

connecting
rod

assembly

Notes
8
Piston

pin
is

press
fitted
to
the

connecting
rod

tightly
and

fitting
force
is
from
1
to
3
tons
When

fitting
piston
pin
special
tool
must
be
used

When

pressing
the
piston
pin
into
the
connecting

rod

apply
engine
oil
to
the

pin
and
the
small
end

of
the
connecting
rod

b

Arrange
the

connecting
rod
so
that
the
oil

jet

of
the

connecting
rod

large
end
is
directed
toward

the

right
side
of

the

cylinder
block

2

Installing
piston
rings

Install
the

top
and
second

fings
in

right
positions
so

that

the
marks
are

faced

upward

3

Fix

bearings
on
the

connecting
rod
and
the

con

necting
rod

cap

Note
Clean
the
back
side
of
the

bearing
carefully
ASSEMBLING
ENGINE

Set
the

cylinder
block
on
the

working
stand
with
the

engine
bottom

faced

upside

2

Install
the
valve
lifters

Install
the

camshaft
and

retain

by
the

camshaft
locate

plate
Locate

plate
tighten

ing

torque
is
0
4

to
0
5

kg
m
2
9
to
3

6
ft
lb

Note
Set
the
locate

plate
so
as
the
LOWER
mark

comes
to
the

engine
bottom
side

Set
the
main

bearings
on
their

positions
on
the

cylinder

block

Fig
EM
71

Installing
camshaft
ocate

plate

Fig
E1U
7
2
lvlajn
betlrj

lg
cap

Notes
a
The
center

bearing
No
3

bearing
is
a

flanged

type
for
thrust
force

b
Two
inner

bearings
No
2
and
No
4
are
of
the

same

type

c
The
front

bearing
No
1
is
the

same
type
a

the
rear

bearing
No
5

d
All

bearings
except
for
No
1

bearing
are

interchangeable
between

upper
and
lower
bear

ings

EM
26