length DATSUN B110 1973 Service Owner's Manual

ENGINE

2
The
valve
face

or
valve
stem
end
surface
should
be

refaced

by
using
a

valve

grinder

Notes
a
Deflection
of
seat
surface

against
axis
should

be
0
03
mm
0
0012
in
or
less

b
Correctness
of

right
angle
and
out
of
round

should
be
0
01
mm
0
0004
in

or

I

c

EM111

Fig
EM
33

Valve

grinder

Note
When
the
a1ve
head
has
been
reduced
to
0
5
mm

0
0197
in

or

I
in

thickn
replace
the
al

e

Grinding
allowance

for
the
alve

stem
end
surface

is
0
5

mm
10
0197
in

or

I

Valve

spring

I
Measure
the

free

length
and
the
tension
of

each

spring
If
the
measured
value
exceeds
the

specified
limit

replace
the

spring

Spring

specifications

Free

length
46
5
mm
1

831
in

38
7

rom
at
23
9

kg

1
524
in

at
52
7Ib
Valve
closed

Valve

open
30
2
rom
at
58
5

kg

1
19
in
at
1291b

EM
l0
2

Check
each

spring
for
deformation
with
a

square

Any
springs
with

deflection
of
1
6

mm
0

0630
in
or

more
must
be

replaced

EM113

Fig
EM

34
Valve

spring
test

Valve
rocker
shaft
and
rocker
arm

I

Check
the
valve

rocker
shaft
and
rocker
arm
for

seizure
and
wear
and

repair
or

replace
as

required

Valve
rocker
arm
to
shaft
oil
clearance

0
02
to
0
05

mm
0
0008
to
0
0020
in

2

When
valve

contact
surface
of
the
valve
rocker
arm
is

worn

excessively
in

step
repair
by
means
of
a
valve

grinder
or
replace

Grinding
allowance
for
valve
contact
surface
of
the

valve
rocker
arm
is
0
5
rom
0
0197
in

or
less

t

Fig
EM

3S

val
Tocker

shaft

ENGINE
MECHANICAL

Note
8
When
the

piston
ring
only
is
to
be

replaced

without
the

cylinder
bore

being
corrected
measure

gap
at
the
bottom
of
the

cylinder
where
the
wear
is

minor

b
Oversize
piston
rings
are
available
for
service

50
100
150
oversize

4

Measure
the

piston
pin
hole
in
relation
to
the
outer

diameter
of
the

pin
If
wear
exceeds
the
limit

replace

such

piston
pin
together
with
the

piston
on
which
it
is

installed

Piston

pin
diameter

mm
in
17447
to
17452

0
6869
to
0
6871

65
23
to
65
48

2
5681
to
5
779
Piston

pin
length

mm
in

Piston

pin
hole
dia

meter
mm
in
17460
to
17453

0

6874
to
0
6871

5

Fitting
of

piston
pin

Determine

the

fitting
of

the

piston
pin
into

the

piston

pin
hole
to

such
an
extent
that
it
can

be

rmger
pressed
at

room

temperature
This

piston
pin
must
be

tight
press

fitted
into

the

connecting
rod

EM131

Fig
EM
54

Piston

pin
fitting

EM
19
g

1

EM132

Fig
EM
55

Measuring
piston
pin
diameter

Piston

pin
to

piston

clearance

mm
in
0

006
to
0

008

0
0002

to
0
0003

Interference
fit
of

piston

pin
to

connecting
rod

mm
in
0
020
0
0008

CONNECTING
ROD

If
a

connecting
rod
shows

any
scratch
or
score
mark

or
is

pitted
on

both
sides
of
the
thrust
face
and
the

large

end

correct
or

replace
it

EM133

Fig
EM
56

Connecting
rod

aligner

2
Check

for
bend
or
torsion

using
a

connecting
rod

aligner
If

bend
or
torsion

exceeds
the
limit
correct
or

replace
the

connecting
rod

ENGINE

Standard

IMaXimum

Connecting
rod
bend

or
torsion

per
100
mm

or
3
94
in

length

mm
in
o
os

0
0020

0
07

0
0028
0
1

0

0039
bend

torsion

3

When

replacing
the

connecting
rod
select

the
rod

so

that

weight
difference
between
new
and
old

rods
is

within

S

gr
0

18
oz
in

unit

weight

4
Install

connecting
rods

with

bearings
on
to
the

corresponding
crank

pins
and
measure
the
thrust
clear

ance
If

the
measured

value
exceeds
the
limit

replace
such

connecting
rod

Stan
dard
Maximum

Big
end

play

mm
in
0
2

to
0
3

0

0079
to
0
Ql18
0
4
0

0IS7

l
8ig
end

plav

A

t

f

L

Fig
EM
57

Big
end

play
check

CRANKSHAFT

Check
the
crankshaft

journal
and

crank

pin
for
scars

biased
wear

and

cracks

Repair
or

replace
as

required

EM
20
27
00
to
27
05
1
063
to
1
065

19

1Ot01940

r
19
10t019
40

fO
752
to
0
764

Ii
10
75Z
to
0
764

I

c
1

r

1tf
1

I

J
X
I

34
97
to

35
03

t

11
377
to
1
379

49
951

to
49

964
dia

11
9666

to
1

96711

ALL
MAIN
BEARING

JOURNALS

Fig
EM
58

Crankshaft

Standard

Taper
out
of
round

of
crank

journal
and

crank

pin
mm

in
0
01

0

0004
44
961
to
44
974
die

11
7701
to
1

7706

ALL
CRANK
PINS

UNIT
ffim

in

Maximum

0
03

0
0012

2

Check
the

crankshaft
for
bend
If
the

bend
exceeds

the
limit

replace
the

crankshaft

Bending
limit

0
05mm
0
0020
in

Standaia
0
015mm
0

0006
in
or
less

Fig
EM
59

Crankshaft
bend
check

ENGINE

SPECIFICATION

a
Valve
mechanism

Valve
clearance
Hot

Intake
mm
in

Exhaust
0
35
0
0138

0
35
0
0138

Valve
clearance
Cold

Intake

Exhaust
mm

in

0
25
0
0098

0
25
0
0098

Valve
head
diameter

mm
in

Intake
35
1
378

29
1
142
Exhaust

Valve
stem
diameter

mm
in

Intake
7

970
to
7
985

0
3138
to
0
3144

7

945
to
7

960
0
3128
to
0
3134

Exhaust

Valve

length
mm
in

Intake

Exhaust
102
35

to
102
65
4
030
to
4

041

102
35

to
102

65
4
030

to
4
041

Valve

spring
assembled

height
111m

kg
in
lb
8
5
0

3346

46
5
1
831

30
2
58
5
1
I99

129

38
7
23
9
1
524
52
7

5
0
Valve
lift

mm
in

Valve

spring
free

length
mm

in

Valve

spring
loaded

length
mm

kg
in
lb

Valve

spring
effective
turns

Valve

guide
length
111m

in
4
100
0

1614

26
4
1

031
1

53
2
087
Valve

spring
wire

diameter
mm

in

V
alve

sp
g
coil
diameter

inm
L

Valve

guide
height
from

head

surface
111m

in
18
0
709

Valve

guide
inner
diameter

mm
in

Intake
8
015

to
8
000
0
3156
to
0
3150

Exhaust
8
015
to
8
000
0
3156
to
0

3150

EM
34

ENGINE
MECHANICAL

Piston
diameter

standard
mm
in

Oversize

50
mm
in

Oversize
100
mm
in

Oversize
150

mm
in

Ellipse
difference
mm
in

Ring
groove
width

Top

2nd

Oil
mm
in

Piston

to
bore
clearance
mm
in

g
Piston

pin

Pin
diameter
mm
in

Pin

length
mm
in

Piston

pin
to

piston
clearance
mm

in

Interference
fit
of

piston
pin
to

connecting

rod

bushing
mm
in

h
Piston

ring

Ring
height

Top

2nd

Oil
mm
in

Side
clearance
mm
in

Top

2nd

Oil

Ring
gap
mm

in

Top

2nd

Oil

EM
37
72
967
to
73

017

2
8727
to
2

8747

73
467
to

73
517

2
8924

to
2
8944

73
967
to
74
017

2

9121
to
2
9140

74
467
to
74
517

2
9318
to
2

9337

0
01
to

0
03
0
0004
to
0

0012

2
0
0

0787

2

0
0
0787

4
0
0
1575

0
023
to
0
043

0
0009
to
0
0017

17
447
to
17
452
0
6869
to
0

6871

0
6869
to
0
6871

65
23

to
65
48
2
5681
to
2
5779

0
006

to
0

008
0

0002
to
0
0003

at
200e

680
F

0

017
to
0
034

0
0007
to
0
0013

2
0
0
0787

2
0
0
0787

4
0
0
1575

0
04
to

0
07
0
0016
to
0
0027

0
04
to

0
07
0
0016
to
0

0027

0
04
to
0

08
0

0016
to
0

0031

0
2

to
0
35

0
0079
to
0

0138

0
2

to
0
35

0
0079
to
0

0138

0
3

to
0
90
0

0118
to
0

0354

ENGINE
LUBRICATION
SYSTEM

Inspection
and

repair

Clean
the
disassembled

parts
with

cleaning
solvent
and

inspect
for
defects

Inspect
the
drive
rotor
shaft
for

excessive
wear
and

scores
and
check

the
following
clearances

Side

clearance
between

Quter
and

inner
rotors
0
12
mm
0

0047
in
or
below

Tip
clearance
0
04
to
0
I2mm

0
0016

to
0
0047
in

Clearance
between
outer

rotor
and

body

0
15
to
0

21
rom
0
0059
to
0
0083
in

Adjusting
regulator

Insert
valve
in
the

body
and
measure
the
distance
A

from
the
valve
end
to
the

spring
contacting
face
inside
the

plug
See

Figure
EL
4

2
The
distance
from
the

spring
contacting
face
inside

the
valve
to
the
valve
end
amounts
to
18
mm

0
7086
in

3
On

inspecting
the
above

dimensions
determine
the

thickness
of

adjusting
shim

Shim
thickness
A
18

mm
0

7086
in

spring

length
at

compression
load
3
67

kg
8
091bs

Assembly

Assembling
the
oil

pump
is
the

reverse
order
of

disassembly

Note
3

Be
sure
no
traces
of

grinding
chips
lint
or
dirt

remain

b
Be

sure
gasket
is
not
turned

up
and
discon

tinued

OIL

PRESSURE

REGULATOR

VALVE

The
oil

pressure
regulator
valve
is
not

adjustable
At

the

released

position
the

valve

permits
oil

passing
through

a

passage
on
the

pump
cover
to
the
inlet

side
of
the

pump

Measure
the

regulator
valve

spring
dimension

to
ensure

that
the

spring
is

provided
with
the
correct
tension
e

Q

@

I

I
Adjusting
shim

2

Valve

spring

13
I
RegulatoT
valve

Fig
EL
4

RegulatoT
valve

Tightening
torque

Oil

pump
cover

bolts

kg
m
ft
lb
2
0
1
45

Oil

pump
mounting

bolts
kg
m

ft
lb
13
to

1
5

9
4to
II

Cap
nut

regulator

valve

kg
m
ft

lb
4
0
to
5
0

29
to
36

Specifications

Oil

pressure
at

idling

kgfcm2
Ibfsq
in
0
9
to
1
2

13
to
17

Regulator
valve

spirng

Free

length
mm
in

Pressured

length
mm
in
4349
l71

30
3
I
19

Regulator
valve

opening

pressure
kgfcm2
lbfsq
in
3
8
to
4
2

54
to
60

OIL

FILTER

The

oil
filter
is
of
a

cartridge
type
The
oil
filter
is

installed

or
removed

using
special
tool

The
filter
element
and
the
filter

body
are
caulked

together
I
t

must
be

replaced
with
a

new
one
as
an

assembly

When

installing
the

oil
filter
fasten
it
to
the
oil

pump

EL
3

ENGINE
ElECTRICAL
SYSTEM

shunt
coil
is

satisfactory
if
the

plunger
is
attracted

continuously

s

SERIES
COIL

S

SHUNT
COIL

Fig
EE
21

Inspecting
series
and
shunt
coils

When

measuring
the
L

dimension

depress
the

plunger

against
a
wall
and
measure
the

length
L

between

the

adjusting
nut
and

magnetic
switch
cover
as

shown
in

Figure
EE

22
and

adjust
if

necessary

II
L

T

Plunger
L
dimension

31
7
to
32
3
mm
1
248

to
1
272
in

I

11
I
Adjusting
nut

121
Plunger

adjuster

Fig
BE
22

Adjusting
L
dimension

REASSEMBLY

Reassemble
the

starting
motor
in

reverse

sequence
of

disassembly

When

assembling
be
sure
to

apply
grease
to
the

armature
shaft

spline
and

apply
oil
to
the
rear

cover
and

gear
case

bearing
metals
and

pinion
slightly
TEST

Performance

test

The

starting
motor
should
be

subjected
to
no
load

and
lock

torque
tests
whenever

it
has
been
overhauled

to
ensure
that
it

operates
correctly
when
installed
on
the

engine
The

starting
motor
should
also
be

subjected
to

these
tests
when
the

cause
of

abnormal

operation
is

to
be

determined
These
tests
are

summarized
as

follows

No

load
test

Connect
the

starting
motor
in
series
with

the

specified

battery
12
volts

and
an

ammeter

capable
of
indi

cating
1

000

amperes

Specified
current
draw

and
revolution
in
these

tests
are

shown

in

specifications
and
service
data

STARTER

MOTOR

s
SWITCH

o
BATTERY

EtJ

VOLTMETER
AMMETER

EE026

Fig
EE
2J
No
load
test

Torque
test

Torque
testing
equipment
should
be
used

to
measure

the

torque
the
motor
will

develop
A

high
current

carrying
variable
resistance

should
be
connected
to
the

circuit
so
that
the

specified
voltage
at
the

starting

motor

may
be
obtained
since

a
small
variation
in
the

voltage
will

produce
a

marked
difference
in
the

torque

development

Specified
power
voltage
and

torque
are
shown
in

Figure
EE
24

EE
9

ENGINE

ElECTRICAL

SYSTEM

SPECIFICATIONS
AND
SERVICE

DATA

Specifications

Manual

Automatic

Transmission

Transmission

Make
and

type
HITACHI

SI14
87M
HITACHI
S114
156

Nominal

output
KW

1
0

1
0

System

voltage
V

12
12

Weight
kg
Qb
4

6
10
1
54
11

9

No

load

Terminal

voltage
V

12
12

Current
A

less
than
60
less

than
60

Revolution

rpm
more
than
7

000
more
than
6

000

Load

Terminal

voltage
V
6
3

6
3

Current
A

less
than
420
less

than
420

Torque
kg
m
ft

Ib

more
than
0

9
6
5

more
than
1
0

7
2

Shifting
type
of

pinion
gear

Magnetic
shift

Magnetic
shift

Number
of
teeth
on

pinion

gear
9

9

Service
data

S114

87M

S114
156

Brush

length

Standard

height
mm
in

16

0
630
14

0
551

Wear
limit

mm
in

6
5
0

256
4
5
0

177

Brush

spring
tension

Standard

pressure
kg
Qb
1
6

3
5

0
8
1
8

Commutator

Outer
diameter

Standard
OD

mm
in

33
1

299
33

I
299

Wear

limit
mm
in

2
0

079
2

0
079

Difference
between
maximum

and

minimum

diameters

Repair
limit
mm
in

0
4

0
0157
0
4
0

0157

Repair
accuracy
mm
in

0
05
0
0020

0
05
0

0020

Depth
of
mica

Repair
limit
mm
in

0
2

0

0079
0
2
0

0079

Repair
accuracy
mm
in

0
5

to
0
8
0

5
to
0
8

0

0197

to
0
0315
0
0197
to
0
0315

Clearance

between
arma
ture
shaft
and

bushing

mm
in

Repair
limit

0

2
0

0079
0
2

0
0079

Vi

Repair

accuracy
mm
in

0
03
to
0
1
0
03
to
0
1
1

r

0

0012
to
0
0039

0
0012
to
0
003Q

EE

11

ENGINE

Stator

core

EE044

Fig
EE
41

Testing
stator

for
ground

Inspection
of
diode

Perform
a
conduction
test
on
diodes
in

both
directions

using
an

ohmmeter
A

total
of
six
diodes
are

used
three

are
mounted
on
the

positive
EB

plate
and
other
three
are

on
the

negative
3
plate
The
conduction

test
should
be

performed
on
each

diode
between

the
terminal
and

plate

The
diode
installed
on
the

G
l
plate
is
a

positive
diode

which
allows
current

flowing
from
the
terminal
to

G
l

plate
only
In
other
words
current
does

not
flow
from
the

G
l
plate
to
the
terminal

EE046

Fig
EE
42

Inspecting
positive
diode

The

diode
installed
on
the

8
plate
is
a

negative
diode

which
allows
current

flowing
from
the

8
plate
to
the

terminal

only
In

other
words
current
does
not
flow
from

the

terminal

t08
plate

EE
20
8
Plate

EE047

Fig
EE
43

Inspecting
negative
diode

If
current

flows
in
both

positive
and

negative
diree

tions
the

diode
is
short
circuited
If

current
does

not
flow

in

any
direction
the
diode
is

open
These
diodes
are

unserviceable
If
there
is
a

defective
diode

replace
all

diodes
six

diodes
as
an

assembly
See
the

Figure
EE44

I
Test

probe
of
a
circuit
tester

I
8
E8

I
terminal

E8
plate

I
@
plate
terminal

I
terminal

8
plate

18
plate
te
rminal

18
plate
@

plate

18
plate

8
plate
Conduction

x

x

x

Fig
EE
44

lnspection
of
diodes

Inspection
of
brush

Check
the
movement

of
brush
and
if
the
movement
is

unsmooth
check
brush

holder
and
deJn
it
If
th
bmsh
is

worn
and
the

length
is

7
mm
0

2756
in
or
less

replace

the
brush
with
a
new

one
Check
the

brush

pig
tail
and
if

it
is
about
to
break

replace

ENGINE

terminal
to
IN
terminal
or
BAT
terminal
Connect
the

other
test

probe
to

ground
Make
sure
that
voltmeter

registers
battery
voltage

4
Start
the

engine
3
Turn
on

the
headlights
and
switch
to
main
beam

I

o

B

ttefY
E

A

J
0

il

I
5
Increase

engine
speed
gradually
until
it
is

approxi

mately
1

100
rpm
and
take
the
voltmeter

reading

6
If
the
measured
value
is
over
12
5

volts
the

alternator
is
in

good
condition
o

I

eE052
Voltmeter

Fig
EE
49

Testing
altematoT

Notes
8
Do
not
run

engine
at
the

speed
of

more
than

1
100

rpm
while
test
is

being
conducted
on

alternator

b
Do
not

race

engine
7
If
the

measured
value
is
below
12

5
volts
the

alternator
is
in

trouble
Remove
and
check
it

for

condition

SPECIFICATIONS
AND
SERVICE
DATA

Specifications

Make
and

type

Nominal

output

Pole

Revolution

No

load
minimum

revolution

Output
current

Wei
t

Applied
regulator

Service
data

Stator
coil

Resistance

per
phase

Rotor
coil

Resistance

Brush

Brush

length

Wear
limit

Spring
pressure

Slip
ring

Outer
diameter
V
A
HITACHI
LTl35
13B

12
35

rpm
Negative
ground

1
000
to
13

500

rpm

A
V

rpm

kg
1b
less
than
1

000

more
than
28

14
2

500

3
4
7
5

TLl
Z
57

n
0
17

at
200C
680F

n
4
4
at
200e
680
F

mm

in

mm
in

kg
lb
14
5
0

571

7
0
2756

0
25
to
0
35
0

55
to
0
77

mm
in
31
1
220

EE
22