engine DATSUN B110 1973 Service Repair Manual

r

Defective

connecting

rod

Defective
crankshaft

bearing
ENGINE

Shortage
of

engine
oil

Low
oil

pressure

Poor

engine
oil

quslity

Rough
surface
of
crankshaft

Clogged
oil

passage

Wear
or

eccentricity
of

bearing

Wrong
assembly
of

bearing

Loose

bearing

Incorrect

connecting
rod

alignment

Shortage
of

engine
oil

Low
oil

pressure

Poor

engine
oil

quality

Wear

or
out
of

round
of
crankshaft

journal

Clogged
oil

passage
in
crankshaft

Wear
or

eccentricity
of

bearing

Wrong
assembly
of

bearing

Not
concentric

crankshaft
or

bearing

EM
40
Add
or

replace
oil

Check
oil
level
on

daily
basis

Correct

Use

right
oil

Grind
and

replace
bearing

Clean

Replace

Repair

Replace

Repair
or

replace

Add
or

replace

Check
oil
level
on

daily
basis

Adjust

Use

right
oil

Repair

Clean

Replace

Repair

Replace

y
1

S
E
R
V
E
z
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X

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M
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DATSUN

1200

MODEL

8110
SERIES

I
NISSAN
I

NISSAN
MOTOR
CO
LTD

TOKYO
JAPAN
SECTION
EL

ENGINE

LUBRICATION

SYSTEM

LUBRICATION
SYSTEM

TROUBLE
DIAGNOSES
AND

CORRECTIONS
Ell

El
4

ENGINE
lUBRICATION
SYSTEM

LUBRICATION
SYSTEM

CONTENTS

DESCRIPTION

LUBRICATION
CIRCUIT

OIL
PUMP

Description

Removal
EL
1

EL
2

EL
2

EL
2

EL
2
Disassembly

I

nspection
and
repair

OIL
PRESSURE
REGULATOR
VALVE

OIL
FILTER
EL
2

EL
3

EL
3

EL
3

Fig
EL
l
Lubrication
circuit

DESCRIPTION

The

lubricating
system
is
of
a

pressure
feed

type
and

consists
of

highly
efficient

components
suited
for

high
speed
running
and

output

EL
1

LUBRICATION
CIRCUIT

Oil
drawn

from
the
oil

pan
through
the
inlet

screen
and

tube

to
the
inlet
side
of
the
oil

pump
is
delivered

by
th

oil

pump
through
the
outlet

portion
of
the
oil

pump
and

the
oil

gallery
to
the
inlet

side
of
the
full
flow
oil

filter

and
to
the

main
oil

gallery

The
main
oil

gallery

supplies
oil
to
the

crankshaft
main

bearings
and

drilled

passages
in
the
crankshaft
and

thus

oil
is

fed

directly
from
the

main

bearings
to
the

connecting
rod

bearings

Oil

injected
from

jet
holes

on

connecting
rods

lubri

cates
the

cylinder
walls
and

pistion
pins

The
oil

distributed
from
the
main

gallery
enters
the

chain

teosioner
and
the

pad
is
held

against
the

chain

by

oil

pressure
and

spring
The
oil

also
lubricates
the

timing

chain

through
the

jet
hole

located

near
the
chain

Furthermore

lubricant
is

supplied
to
each
camshaft

bearing
through
each
crankshaft
main

bearing
and

finally

to
the
011

gallery
in
the
rocker

shaft

through
the
center

camshaft

bearing

The
rocker

arm
and
valve

are
lubricated

by
the
oil

through
the
oil

gallery
in
the

rockershaft

To
this

oil

gallery
lubricant

is

supplied
through
the

center

camshaft

bearing
as
shown

in

Figure
EL
I

OIL
PUMP

Description

The
oil

pump
assembly
is
installed
on
the
bottom
of

the

cylinder
block
and
driven

by
the
distributor

drive

shaft

assembly
The
oil

pump
is
of

a
rotor

type
The
oil

pressure
is

regulated
by
the

regulator
valve
camshaft

Removal

Engine
in
vehicle

Drain

engine
oil

2
Remove
the
frunt

stabilizer

3
Remove
the

splash
shield

board

4
Detach
the
oil

pump
body
together
with
drive

gear

spindle
ENGINE

Fig
EL
2
Removal

of
oil

pump

Disassembly

Prior
to

disassembling
check
to

determine
that
the

pump
is

defective

Take

out
a
total
of
2
bolts

securing
the

pump
cover

to
the

pump
body
The

outer
and
inner

rotors
and
drive

shaft
can

then
be

disassembled

2

Applying
a
suitable
wrench
or

spanner
loosen
off
the

regulator
valve

Note
a
When

placing
the
valve
in
a
vise
use
extreme

care
not
to
distort
the

pump
body
and
cover
in
the

jaws

b
Do

not

pull
out
the
drive
shaft

pin

securing
the

driven
shaft
and
inner
rotor
The
shaft
is

press

fitted
to
the
rotor
with
the

pin
calked

n

Trochoid

Fig
EL
Oil

pump

EL
2

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

Note
Do
not
oyerlasten
the
filter
or
oil

leakage
may

occur

The

oil
filter
can
be

removed

easily

using
special
tool

STl9320000
It

may
also
be
removed

easily

using
wire

type
filter
remover

l

t

1

h

T

Fig
EL
5

Oil

filteT

TROUBLE
DIAGNOSES
AND
CORRECTIONS

Condition
Probable
cause

Corrective
action

Oil

leakage

Damaged
or

cracked

body
cover

Replace

Oil

leakage
from

gasket

Replace

Oil

leakage
from

regulator
valve

Tighten
or

replace

Oil

leakage
from
blind

plug
Replace

Decreased
oil
Leak
of
oil
in

engine
oil

pan
Correct

pressure

Damaged
or
worn

pump
rotors

Replace

Defective

regulator

Adjust
or

replace

Used
of

poor
quality
engine
oil

Replace

Noise

Excessive
backlash
in

pump
gears

Replace

EL
4

ENGINE

WATER
PUMP

The
water

pump
is
a

centrifugal
type
water

pump
with

an
aluminum
die
cast

pump
body
The
volute
chamber
is

built
into
the
front

cover
assembly
and

a

high
pressure

sealing
mechanism
is

adopted
to

prevent
the
water
leakage

and
noise

completely

Note
The
water

pump
must
not
be
disassembled
since

the

bearings
are

shrinkage
fitted
to
their
bores
If

any
part
of
water

pump
is
found
defective

replace

pump
assembly

o

C0026

Fig
CO
2
Water

pump
and

front
cover

Removal

Fig
CO
3
Water

pump
removal
Drain

cooling
water

completely

2
Take

the
fan
belt
off
the

pulley

3
Remove
fan
and

pulley

4
Remove
the
water

pump

THERMOSTAT

A

pellet
type
thermostat
is

used
in
the
wa

ter
outlet

passage
to

control
the
flow
of
coolant

providing
fast

engine
warm

up
and

regulating
coolant

temperature
A

wax

pellet
in
the

thermostat

expands
when

heated
and

contracts
when

cooled
The

pellet
is
connected

through
a

piston
to
a
valve

and
when
the

peUet
is
heated

pressure
is

exerted

against
a
rubber

diaphragm
and
the
valve

opens

As
the

pellet
is

cooled
the
contraction

allows
the

spring

to
close
the
valve

Removal

Drain

cooling
water

2
Remove

radiator
hose

3
Remove
water
outlet
elbow

Then
take

out
the

thermostat

11
I
Thermostat

12
Water

outlet

Fig
CO
4
Thermostat
removal

Inspection

To
test
the
thermostat
for

proper
operating
tern

perature
submerge
the
unit
in
a
container
of
water
Heat

the
water
and
observe

the
temperature

CO
2

ENGINE

SPECIFICATIONS

Dimensions
of
radiator

core

Height
x
Width
x
Thickness
mm
in
330
x

344
x
32

13
0
x

13
5
x
1
26

Type
Corrugate
fin

type

Radiator
fin

spacing
mm
in
2

5
0
098

Radiator

capacity
K
cal
hoC
335

Water

capacity
with
heater
kg
em
lb

sq
in

t
US

qt
Imp
qt
0
9IO
l
13II4

4

9
5

I
4

X
Cap
working

pressure

SERVICE
JOURNAL
OR
BULLETIN
REFERENCE

DATE
JOURNAL

or

BULLETIN
No
PAGE
No
SUBJECT

CQ

4

ENGINf

Automatic

temperature
control
air
cleaner

The
automatic

temperature
cuntrol
air
cleaner
is
of
a

special
tvpe
provided
with
a

temperature
sensor
and

vacuum
operated
valve
The
vacuum
acted

upon
the
air

2

I
control
valve
is

controlled
bv
the
sensor
See

Figure

EF

2

J

o

ECQ06

Air
inlet

pipe

2
Vacuum

motor
assembly

3
Temperature
sensor

assem
bly

4
Hot
air

pipe

5
Air
ontrol
valve

Fig
EF
2
Automatic

temperature
control

air
cleaner

If
the

temperature
of
suction
air
is
low

when
the

engine
is

running
the
air
control
valve
closes
the

underhoad
air
inlet

and
introduces
hot
air

through
the

j

I
a

0

Ej
If

f

7
@

t
t
1

Hot
air
I
cover
which
is
installed
on
the
exhaust
manifold
See

Figure
EF
3

I

@
To
manifold

EC007

J
I
Air
inlet

pipe

2
Air
control
valve

3

Diaphragm
spring

4

Diaphragm

5
Vacuum
ho

s

6
Air
bleed
valve
closed

7
Hot
air

pipe

8

Temperature
sensor

as

mbly

Fig
EF
3
Hot
air

delivery
mode

during
cold

engine
operation

EF
2

FUEL

SYSTEM

When
the

temperature
of

suction
air
around
the
sensor

reaches
430C

1l00F
and
above
the
sensor

actuates
to

open
the
air

control
valve

When
the

temperature
of

suction
air
around
the
sensor

further
rises
and

reaches
above
490C

I200F
the
air
control
valve

completely

opens
to

prevent
the

entrance
of
hot

air
and

aHows

underhood
air

alone
to
be
introduced

into
the
carburetor

See

Figure
EF4

u

C
I

1f1

lL
GJ

J
To
manifold

ECOOB

j
1
Air
inlet

pipe

2
Air
control
valve

3

Diaphragm
spring

4

Diaphragm

5
Vacuum
hoses

6
Air
bleed
valve

fully

open

7
H
t
air

pipe

8

Temperature
sensor

a5

mbly
Under
hood
air

I
I

Fig
EF
4

Underhood
air

delivery
mode

during
hot

engine
operation

The
air
control

valve
acts
in

the
manner
described

above
the

temperature
of
suction
air

around
the
sensor
is
always
kept
about
460C

I150F
See

Figure
EF
5

r
9

t
t
T
I

I

I

fY
ID

I

J
To
manifold

E
C009

I
Air
inlet

pipe

2
Air
control
valve

3

Diaphragm
spring

4

Diaphragm

5

Vacuum
hoses

6
Air

bleed
valve

partially

open

7
Hot
air

pipe

8

Temperature
sensor

assembly
Under
hood
air

J

Hot
air

Fig
EF
5

Regulating
air

delivery
mode

EF
3