1973 DATSUN B110 Service Repair Manual

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

Bearing
thickness

mm

in

STD
I
No
1

I
No
2

I

I
I
1
585

to
1
565

No

3

0

0624
to
0
0616

I
No
4

I

No
5

I

NO

11

0
25

I
1

710
to
1

690

undersize
No

3

0
0673
to

0
0665

I
No
4

I

No
5

I

No
1

I

I
No
2

I

0
50

I
1
835

to
1
815

undersize
No
3

0

0722
to
0
0715

No
4

No
5

I

I
No
1

I
No
2

I

0
75

I
11
960
to

1
940

undersize
No
3

0

0772
to
0

0764

I
No
4

I

I
No
5

I
ENGINE

Camshaft

journal

diameter
mm

in

D
783
to
43
796

1
7237

to
1
7242

43
283
to
43
296

1
7041
to
1
7046

42

783
to

42
796

1

6844
to

1
6849

42
283
to
42
296

1
6647
to
1
6652

41
208

to
41
221

1

6224
to
1
6229

43

533
to
43
546

11
7139
to
1
7144

43
023
to
43
036

1
6983
to
1
6943

42

523
to
42
536

1
6741
to
1
6746

42
023
to
42

036

1
6544
to
1
6550

40
958
to

40
971

1
6t25
to
1

6
30

43
283
to
43
296

1
7041
to
1
7046

42

773
to
42
786

1
6840
to
1
6845

42

273
to
42
286

11
6643
to
1
6648

41
773
to
41
786

1

6446
to
1
6451

40
708
to
40
721

1

6027
to
1
6023

43

033

to
43
046

1
6942
to

1
6947

42
523

to
42

536

1
674t
to

1
6746

42
023
to
42

036

1

6554
to
1
6550

41
523
to
41
536

1
6348
to
1

6353

40
458
to
40
471

1
5928
to
1
5933

EM
24
MISCELLANEOUS
COMPONENTS

Crankshaft

sprocket
and
camshaft

sprocket

I

Check
tooth
surfaces
for

flaws
and
wears

Replace
defective

sprocket

2

Install
the
camshaft

sprocket
in

position
and

check

for
run
out

If
it
exceeds
0
1
mm

0
0039
in

replace
the

camshaft

sprocket

Check
the

camshaft

thrust
deviation
If
it
is

deviated

replace
the

camshaft

locating
plate

f

EMl48

Fig
EM
66

Camshaft
sprocket
run
out
check

Clearance

limit
0
Imm

0

0039
in

SJ
l

ldar
Q
0
02

to
0

08mm

0

0008
to
0

0031
in

Fig
EM
67
Check

locating
plate
thrust
clearance

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

ENGINE
MECHANICAL

3

Apply
engine
oil

to
the
main

bearing
surfaces
on

both
sides
of
the

cylinder
block
and

cap

Install
the
crankshaft

4
Install
the
main

bearing
cap
and

tighten
the

bolts

with

specified
torque

Tightening

torque

5
0

to
6

0

kg
m
36

to
43

ft
lb

Notes
a

Arrange
the

parts
so
that
the
arrow

mark
on

the

bearing
cap
is
faced
toward
the
front
of
the

engine

b
Prior
to

tightening
the

bearing
cap
bolts

place

the

bearing
cap
at
a

proper
position
by

shifting

the
crankshaft
in
the

axial
direction

c

Tighten
the

bearing
cap
bolts

gradually
in

separating
two
to

three

stages
and

outwardly
from

the
center
beari

ng

d
After

securing
the

bearing
cap
bolts
ascertain

that
the
crankshaft

can
be

easily
rotated

5
Make
sure

that
the
crankshaft
end

play
is

correct

Crankshaft
end

play

0
05

to
0
15

rom
0
0020
to

0
0059

in

Fig
EM
73

Crankshaft
end

play
check

EM
27
Fig
EM
73
t

Applying
adhesive

6
Install
the
rear
oil
seal

7
Install
the

flywheel
securely

using
the

lock
washers

and

tighten
the
bolts
with

specified

torque

Tightening
torque

6
5
to
7
5

kg
m
47

to
54

ft
lb

Iii

Fig
EM
74

Flywheel
installation

8
Rotate
the

engine
a

quarter
turn
and
install
the

piston
rod

assembly

ENGINE

Fig
EM
75
Piston
and

connecting
rod

assembly
installation

Notes
8

I
nsert

the

pistons
in
the

corresponding
cyl

inders

b

Apply
engine
oil
to

parts
as

requried

c

Arrange
pistons
so

that
the
F
mark
on
the

piston
is
faced
to

the
front
of
the

engine

d
Install

piston
rings
at
180
to
each
other

avoiding
to
fit
them
in
the
thrust
and

piston

pin

axial
directions

Fig
EM
76

Connecting
rod

cap
installation

Note

Arrange
connecting
rods
and

connecting
rod

caps

so
that
the

cylinder
numbers
are
faced

toward
the

same
direction

EM
28
q

Install

the

connecting
rod

cap

Tightening

torque

32
to
3
8

kg
m
23
I

to
7
S
ft
lb

10
Make

sure
that
end

play
of
the

connecting
rod

large

end
is

correct

Big
end

play

j

I

Fig
EM
77

Big
end

play
check

Big
end
end

play
0
2

to
0
3

0

0079
to
0
0118

11
Install
the
camshaft
and

crankshaft

sprockets

temporarily
for

adjustment
of
the
tooth

height
by

using

adjusting
washers

Height
difference

mm
in
less
than
O
S

0
0197

Adjusting
washer

thickness
mm

in
O
IS
0
006

Fig
EM
78

Adjusting
sprocket
tooth

height