1977 DATSUN PICK-UP oil type

General
Information

LUBRICANT
SPECIFICATIONS

Item

Specifications
Remarks

SAE
Classification
Furthermore
refer
to

Gasoline

engine
oil

SD

or
SE
SAE
recommended

viscosity

table
See

Poge
GI
B

Transmission

and
API
GL
4

0

steering

Differential
API
GL
S

Automatic

TIM
fluid

Type
DEXRON

Multipurpose

grea
NLGI2
lithium

soap
base

Brake
and
clutch
fluid
DOT

3

Permanent
anti

freeze

Antifreeze

Ethylene
glycol
ba
e

GI
9

r

ManifolJ
nuts

I

2
to
1
6

kg
m

8
7
to
I

6
ft
lb

Carburelor
nuls

0
5
to
1
0

kg
m

3
6
to
7
2
fl
tb

Fig
ET
7
Tightening
s

quence

CHECKING
ENGINE

OIL

Check
if
oil
is
diluled
with
water

or

gasoline
Drain
and
refill
oil
if

necessary

Notes

a
A

milky
oil
indicates
the

presence

of

cooling
water
Isolate
the
cause

and
take
corrective
measure

b
An
oil
with

extremely
low

viscosity

indicates
dilution
with

gasoline

2
Check
oil
level
If
below
the

specified
level

raise
it

up
10
the
H

level

Engine
oil

capacity

including
oil

filter

Maximum
H
leven

4
3
liters

4

MUS
qt
3
Y

Imp
qt

Minimum
L

level

3
3
liters

3
f
US

qt
2
U

Imp
ql

REPLACING
OIL

FILTER

The
oil
mter
is

a

cartridge
type
and

can
be
removed

using
Oil
Filter

Wrench
STI9320000

I
Check
for
oil
leaks

past
gasketed

flange
If

leakage
is

found

retighten

just
enough
to

stop
leakage
If

retight

ening
is

no

longer
effective

replace

mter
as
an

assembly
Engine
Tune

up

2
When

installing
oil

filter

tighlen

by
hand

Note
Do
not

overtighten
oil

flIt

lest

leakage
should
occur

CHANGING
ENGINE

COOLANT

PERMANENT
ANTI
FREEZE

COOLANT

Permanent
anti

freeze
coolant
is
an

ethylene
glycol
base

producl
conlain

ing
chemical
inhibilors
10

protect
the

cooling
system
against
corrosion

The
anti
freeze
does
not
contain

any

glycerine
ethyl
or
methyl
alcohol

It
will
not

evaporate
or
boil

away
and

can
be
used
with
either

high
or
low

temperaturethennoslat

It

flows

freely
transfers
heat
effi

ciently
and
will

not

clog
passages
in

the

cooling
system

The
anti
freeze
must
not
be
mixed

with
other

products

This
coolant
can
be
used

through

out

the
seasons
of
the

year

Whenever
coolant
is

changed
the

cooling

syslem
should
be
flushed
and

refilled
with
a

new
coolant

Check
the
level
See
the
instruc

lions
furnished

by
the
manufacturer

for
the
mixture
ratio

of
anti
freeze
10

water

CHECKING

COOLING

SYSTEM
HOSES

AND
CONNECTIONS

Check
hoses
and

fittings
for
loose

connections
or
deterioration
Re

tighten
or

replace
if

necessary

INSPECTION
OF

RADIATOR

CAP

Apply
reference

pressure
0
9

kg
cm2
13

psi
1
to
radiator

cap
by

means
of

a

cap
tester
to
see
if
it
is

satisfactory
Replace
cap
assembly
if

necessary

ET
8
Fig
ET
fJ

Teltill
l
rod
ioto

cop

COOLNG
SYSTEM

PRESSURE
TEST

With
radiator

cap
removed

apply

reference

pressure
1

6

kg
cm2
23

psi
to
the

cooling
system
by
means

of
a
lesler
to
detect

any
leakage

Water

capacity

Without
heater

7
4
liters

7
U
US

qt
6
f

Imp
qt

With
heater

8
0
liters

8
f
US

qt
7

Imp
qt

CHECKING
VACUUM

FITTINGS
HOSES

AND
CONNECTIONS

Check
the
condition
of

filtings
and

hoses

Retighten
or

replace
if
neces

sary

All
vacuum
hoses
can
be
identified

by
colors

White
line

Vacuwn
tube
to
carburetor
E

G
R

Tube

Vacuum
tube
to
thermal
vacuum

valve

Thennal
vacuum
valve
to
E
G
R

control
valve

Engine
Tune

up

EC284

When

installing
this
valve

ensure

that
it

properly
oriented
This
valve

should
be

replaced
periodically
Refer

to
Maintenance
Schedule

I

To

distribut0
From

carburetor

Yl
r

EC278
l

Fig
ET
24
Operation
of
spark
delay

value

I

I

Carburetor
side

Distributor
side

rJmlL
lr

EC346

Fig
ET
25
Checking

spark
delay
value
Distributor
side

Brown

lOne
way
umbrella
valve

2
Sintered
metal
disc

Fig
ET
23
Spark
delay
valve

INSPECTION

I
Remove

spark
delay
valve

2
Blow
air

through
port
on

carbure

tor
side
then

through
the

other
port

on
distributor
side

Spark
delay
valve

is
in

good
condition
if
when

finger
is

placed
over

port
on
distrib
side

ajr
flow
resistance
is

greater
than
that

on
the
other

side
See

Figure
ET
25

3
If
a
considerable
air
flow
resist

ance
is
felt
at

port
on
distributor
side

in

step
2

above
and

if
the
condition
of

spark
delay
valve
is

questionable
dip

port
on
carburetor

side
into
a

cup

fIlled
with
water
Blow
air

through
the

other

port
Small
air
bubbles
should

appear

EC279

Fig
ET
26

Checking
spark
delay
ualue

Note
Be

careful
to

avoid

entry
of
oil

or
dirt
into
valve

ET
15
CHECKING

AUTOMATIC

TEMPERATURE

CONTROL
AIR

CLEANER

1
Air
cleener
element

Viscous

paper
type
air
cleaner
ele

ment
does
not

require
any
cleaning

opera
tion

until
it
is

replaced
periodi

cally
Brushing
or

blasting
operation

will

cause

clogging
and
result
in
enrich

ment
of
carburetor
mixture
and

should
never
be
conducted
For
reo

placement
interval
of
air
cleaner
ele

ment
refer

to
Maintenance
Schedule

2
Hot

elr
control
system

In
warm
wealher
it
is
difficult
to

find
ou

t
malfunction
of
hot
air
control

system
In
cold
weather
however

malfunction
of
air
control
valve
d

e
to

disconnection
or
deterioration
of
vacu

um
hose
between
intake
manifold
and

vacuum
motor
and
insufficient
dura

bili

ty
of
air

con
trol
valve
will
cause

insufficient
automatic
control

opera

tion
for
intake
air
and
result
in

engine

disorder

including

I

Stall
or
hesitation
of

engine

opera

tion

2

Increase
in
fuel

consumption

3
Lack
of

power

These

phenomena
reveal
malfunc

tionof
hot
air
control

system
If
these

phenomena
should
occur
check
hot

air
control

system
as
described
in
the

following
before

carrying
ou

t

inspec

tion
of
carburetor

2
1
Vacuum
hoses

Intake
manifold
to
3

way
connec

tor
3

way
connector
to

temperature

sensor
3

way
connector
to
idle
com

pensator
temperature
sensor
to

vacu

um
motor

1

Check
that
vacuum
hoses
are
se

curely
connected
in

correct

position

2
Check
each
hose
for
cracks
or

distortion
hose

clip
for
condition

Fig
EM

3

Crankshafl

PISTON

AND

CONNECTING
ROD

The

pistons
are

of
a

special
alumi

num

casting
and
have

struts
to
control

thermal

expansion
two

compression

rings
and

one
combined
oil

ring
The

piston
heads

are
slightly
dished

The

piston
pil1S
are
a

special
hollow

steel

shaft

They
are
full

floating
fit
to
the

piston
and

press
fit
to
the

connecting

rods

The

connecting
rods
are
of
a

special

forged
steel
Oil
is

sprayed
to
the

connecting
rod
small
ends

through

drilled

passages
in

the

large
ends
of

rod

Oil
holes
in

the

connecting
rods

are
located
so
as
to
insure

optimum

lubrication
under

heavy
load

0
50
1

o

E

Moao

Fig
EM
4

Piston
and

connecting
rod

CYLINDER
HEAD

The

cylinder
head
is

made
of
a

light
strong
aluminum

alloy
with

good

cooling
efficiency
it
contains

wedge

type
combustion
chambers
A

special

aluminum
bronze
valve
seat
is

used
on

the
intake
valve
while
a
heat
resistant

steel
valve
seat
is
installed

on
the

exhaust
valve
These

parts
are

all
hot

press
fitted

EM407

Fig
EM
S

Cylinder
head
Engine
Mechanical

CAMSHAFT

The
camshaft
is

made
of
a

special

cast
iron
and
is
loca
ted
inside
the

rocker
cover
Four
aluminum

alloy

brackets

support
it
Camshaft

bearings

are
lubricated
from
oil
holes
which

lead
to
the

main
oil

gallery
of
the

cylinder
head

Concentric

passages
are
drilled
in

the

front
and

rear

parts
of
the

earn

shaft

Oil
to
each
earn
lobe
is

supplied

through
an
oil

hole
drilled
in
the
base

circle
of
each
lobe
Lubricant
is

sup

plied
to
the
front
oil

gallery
from
the

2nd
camshaft

bearing
and
to
the

rear

oil

gallery
from
the

3rd
camshaft

bearing
These

holes
on
the
base

circle

of
the

lobe

supply
lubricant
to
the

earn

pad
surface
of
the
rocker
arm

and

to
the
valve

tip
end
The
cams
feature

a

long
overlap
profile
to
reduce
NOx

emission

Fig
EM
6

Camshafl

VALVE
MECHANISM

The
valve

system
has
the

pivot
type

rocker

arms
that

are
activated

directly

by
the
earn
mechanism

this
has
made

its

moving

parts
considerably
lighter

and

provides
ideal

high
speed
perform

ance

Dual

type
valve

springs
are
in

stalled

h

@l

if

Exhaust

Intake
EM084

Fig
EM
7
Valve
mechanism

EM

3
CAMSHAFT
DRIVE

The
camshaft
is
driven

by
a
double

row
roller
chain
driven

by
the

crank

shaft
The
tension
of
the

chain
is

controlled

by
a

chain
tcosioner

which

is

operated
by
spring
and
oil

pressure

The
rubber
shoe

type
tensioner

damps

vibration

of
the

chain
and
controls
its

tension

EM537

Fig
EM

8
Chain

driving

aystem

MANIFOLDS

The
intake
manifold
is
of
an
alumi

num
cast

alloy

The
exhaust
manifold
is

of
a
dual

design
and

incorporates
a
heat
control

valve
in
it
The

heal
control
valve
is

used
to

warm
the
intake
manifold

A

plate
is
installed
on
the
outer

face
of
the
manifold
to
draw
hot

intake
air

out

through
it
The
exhaust

pipe
is
connected
to
the

flanged
sur

face
of
the
exhaust
manifold

Fig
EM

9
Intak
and
exhaust

manifolds

PRECAUTIONS

CYLINDER
HEAD

PRECAUTIONS

I
Use

thoroughly
cleaned

parts

Especially
make

sure
that
oil
holes
are

clear
of

foreign
matter

2

When

installing
sliding
parts
such

as

bearings
be
s
uIe
to

apply
engine
oil

to
them

3
Use

new

packing
and

oil
seals

4
Do
not

reuse
lock
washers

5

Keep
tools
and

work
benches

clean

6

Keep
necessary
parts
and
tools

near
at
hand

7
Be

sure
to
follow

specified
tight

ening

torque
and
order

8

Applying
sealant

Use
sealant
to
eliminate
water
and

oil
leaks
Parts

requiring
sealant
are

I
Front

cover
and
corners
of

cyl

inder
block
See

Figure
EM

78

EM153

Fig
EM
78

Applying
alant

Front
cover
and

cylinder
block

2
Main

bearing
cap
and

cylinder

block
Each

side
of
rear

main
bearing

cap
and
each
corner
of

cylinder
block

See

Figure
EM
79
Engine
Mechanical

ENGINE
ASSEMBLY

CONTENTS

EM
21

EM
21
PISTON
AND

CONNECTING
ROD

ENGINE
ASSEMBLY
EM

22

EM
22

Cylinder
block

Rear
main

bearing
cap

20to2Smm

Ill

Points

to
be

applied
sealant

EM151
s

e

00

000

o

Fig
EM
79

Applying
sealanl

Main

bearing
cap
and

cylinder
block

3

Cylinder
block

Step
portions
at

four

mating
surfaces

cylinder
block
to

front
chain

cover
and

cylinder
block

to
rear
main

bearing
cap
See

Figure

EM
80

Note
Do
not

apply
too

much
sealant

J

Apply
sealant
at
hese

points

EM152

Fig
EM
80

Applying
sealant

Cylinder
block

CYLINDER
HEAD

Valve
assembly
and
valve

spring

Using
Valve
Lifter
STl2070000
set

valve

pring
seat
in

position
and
fit

valve

guide
with
oil
seaL

Assemble
valve
in
the
order
shown

below
valve
inner
and
outer
valve

springs
spring
retainer

valve
collet

and
valve
rocker

guide

EM
21
Fig
EM
81

Installing
valves

Notes

a
Ensure

that
valve

face
is

free
from

foreign
matter

b
The
L20B

engine
uses
double

type

valve

springs

2
Valve
rocker

pivot
assembly

Screw
valve
rocker

pivots
joined

with
lock
nuts
into

pivot
hushing

3
Camshaft

assembly

Set

locating

plate
and

carefully

install
camshaft
in

cylinder
head
Do

not

damage
the

bearing
inside

Oblong

groove
of

locating

plate
must
be

directed
toward
front
side
of

engine

Camshaft
bracket

tightening

torque

1

8
to
2
0

kg
in

13
to

15
ft
lb

4

Install
camshaft

sprocket
on
earn

shaft
and

tighten
it

together
with

fuel

pump
drive
cam
to

specified
torque

Tightening
torque

12
tol6

kg
m

87
to
116
ft

lb

this
time
check
camshaft
end

Fig
EM
82

Installing
camshaft

sprocket

5
Install
rocker
arms

by

pressing

valve

springs
down
with
a
screwdriver

6
Install
valve
rocker

springs

7
After

assembling
cylinder
head

turn
camshaft
until
No
I

piston
is
at

T
D
C
on
its

compression
stroke

EM1S5

Fig
EM
83

A
embling
cylinder
head

PISTON
AND

CONNECTINGROD

1

Assemble

pistons
piston
pins
and

connecting
rods

on
the
de
ignated

cylinder

STl3030001

EM156

Fig
EM
84
Installing
piston
pin

EM157

Fig
EM
85
Assembling
piston
and

connecting
rod

Notes

a
Piston

is

pressed
into

connecting

rod
with

fitting
force
of
0
5
to
5

tons
aid
of
Piston
Pin
Press

Stand
STl303000
I
is

necessary

When

pressing
piston
pin
into
con

necting
rod

apply
engine
oil
to

pin

and
small
end
of

connecting
rod
Engine
Mechanical

b

Arrange
so
that
oil

jet
of
connect

ing
rod
big
end
is
directed
toward

right
side
of

eylinder
block

c

Be
sure
to
install

piston
in

cylinders

with
notch
mark
of

piston
head

toward
front
of

engine

2

Install

piston
rings

InstalI

top
and
second

rings
in

right

position
with
marked
side

up

Notes

a

Top
ring
is

chromium

plated
on

liner

contacting
face

b
Second

ring
has

larger
taper
surface

than

top
ring

c
In
the
combined
oil

ring
upper
rail

is
the
same
as

lower
one

j

c6J

EM158

Fig
EM
86

lalling
pidon
rings

3

Fix

bearings
on

connecting
rod

and

connecting
rod

cap

Note
Clean
back
side
of

bearing
care

fully

ENGINE
ASSEMBLY

The
first

step
in

engine
assembly

is

to
bolt

Engine
Attachment

ST0526000
I

to

right
hand
ide
of

cylinder
block
Next
install
block
on

another

Engine
Stand
ST0501S000

with

engine
bottom

up

2

Set
main

bearings
at

the

proper

portion
of

cylinder
block

Rear
Front

III
III

m
It
IlL

D

D

D
D
D

1
5
1
4
1
3
1
2
1
1

EM159

Fig
EM
87
Main

bearings

EM
22
3
Install
baffle

plate
including

cyl

inder
block
net

Notes

a

Only
center

bearing
No
3

is
a

flanged
type

b
All
inter
bearings
No
2

and
No
4

are
the
same

type

c
Front

bearing

No
I
is

also
the

same

type
as
rear

bearing
No
5

The
difference
is

that
an
oil
hole
is

provided
in
the
front

bearing

d
All

upper
and
lower

bearings
are

interchangeable

4

Apply
engine
oil

to
main

bearing

surfaces
on
both
sides
of

cylinder

block
and

cap
and
then
install
crank

shaft

5
Install
main

bearing

cap
and

tight

en

bolts
to

specified

torque

Tightening
torque

4
5
to
5
5

kg
m
33

to
40
ft
lb

Notes

a

Apply
sealant
to
each
side
of
rear

main

bearing
cap
and
each
comer

of

eylinder
block
as
shown
in

Figure
EM
79

b

Arrange
parts
so
arrow
mark
on

bearing
cap
faces
toward
front
of

engine

c

Prior
to

tightening
bearing
cap

bolts

place
bearing
cap
in

proper

position
by
shifting
crankshaft
in

the
axial
direction

d

Tighten
bearing
cap
bolts

gradually

in
two
to
three

stages
outwardly

from
center

bearing
in
the

sequence

as
shown
in

Figure
EM
88

e
After

securing
bearing

cap
bolts

ascertain
that
aankshaft
turns

smoothly

@

i

d

l

j
1

@EM543

Fig
EM
8S
Torque

sequence
0

cap
bolt

2
Turn
crankshaft
until
No
I

pis

ton
is
at
T
D
C

on
its

compression

stroke

3
Make

sure
thai
camshaft
sprock

et
location
notch
and

plate
oblong

groove
are

aligned
at
their
correct

positions

4

When

installing
cylinder
head

make
sure

that
all
valves
are

apart

from
heads
of

pistons

5
Do

not
rotate
crankshaft
and

camshaft

separately
or
valves
will
hit

heads
of

pistons

6

Temporarily
tighten
two
bolts

CD

V
sJiown

in
Fig

re
EM
96

Tightening
torque

2

kg
m

14
ft
b

15
Install
crankshaft

sprocket
and

oil

pump
drive

gear
and
fit
oil

thrower

Note
Make
sure
lhat

maling
marks
of

crankshaft

sprocket
face
10
Cront

16
Install

timing
chain

Noles

a
Make

sure
that
crankshaft
and
cam

shaft

keys
point

upwards

Fuel

pump
drive

earn

2
Chain

guide

3

Chain
tensioner

4

Crank

sprocket

5
earn

sprocket

6
Chai

guide

EM439

b
Set

timing
chain

by

OOgning
its

mating
marks
with
those
oC
crank

shaft

sprocket
and
camshaft

sprock

et
at
the

right
hand
side
There
are

forty
four
chain
links
between
two

mating
marks
of

timing
chain

c
NO
2
hole
is

Cactory

adjusted

When
chain
stretches

excessively

adjust
camshaft

sprocket
at

No
3

hole

d
Use
a

set
of

timing
marks
and

location
hole

numbers
Engine
Mechanical

17
Install
chain
slack
side

guide
to

cylinder
block

18
Install
chain
tensioner

Note

Adjust
protrusion
oC
chain
ten

sioner

spindle
to
0
mm
0
in

Fig
EM
98

lmtalling
chain
tensioner

19
Press
new
oil
seal
in

front
cover

Notes

a
Front

cover
oil
seal
should
be
reo

placed
when
Cront
cover
is

disas

sembled

b
BeCore

pressing
oil
seal
into
Cront

cover

give
coating
of

engine
oil
to

periphery
of
oil
seal

c
This
oil
seal
is
a
threaded
seal

type

which
has

improved
sealing
charac

teristics
Do
not

apply
grease
to

sealing

lip

20
Install
front
cover
with

gasket
in

place

1

Timing
mark

2

Timing
mark

EM545

Fig
EM

99

Installing
fronl
COlHlr

Notes

a

Apply
sealant
to
Cront
cover
and

corners
oC

upper
section
of

cylinder

block

as
shown

in

Figure
EM
78

EM
24
b
Install
Cront
cover
with
head

gasket

in

place

c

Check

height
diCCerence
between

cylinder
block

upper
Cace
and
Cront

cover

upper
Cace
DifCerence
must

be
less
than
0
15

mm
0
0059
in

d

Note
that
difCerent

types
oC
bolts

are
used

e

Before

installing
front
cover
on

cylinder
block

apply

coating
oC

engine
oil
10

sealing
lip
of
oil

seal

EMS11

Fig
EM
lOD
Front

cover
bolts

Tightening
torque

Size
M8
0
315
in

1
0
to
1
3

kg
m
7

2
to
9
4

ft
lb

Size
M6
0
236
in

0
4
to
0
6

kg
m
2

9
to
4

3
ft
lb

21
Install
crankshaft

pulley
and

water

pump
assembly
then
set
No
I

piston
at
ToO
C
on
its

compression

stloke

Crankshaft

pulley
nu
I

tightening
torque

12
to
16

kg
m
B7
to
116
ft

lb

EM546

Fig
EM
Ol

lnstallingcran
haft

pulley
and

water

pump

22

Finally

tighten
head

bolts
to

the

specified
torque
in

three

steps

according
to
the

lightening
sequence

shown
in

Figure
EM
96

Note
thai
Iwo

types
of
bolts

are

used

Engine
Mechanical

Tool
number
For
Reference

No
Description
use

page
or

tool
name

Unit

mm
in
on

Figure
No

8
ST13030001
This
tool
is

used
with

a

press
to
drive

pin
into

or
out
of
All

Fig
EM
29

connecting
rod
L
series
Fig
EM
84

Piston

pin

press
stand

1
20
0

79

I

8

M

e

120
4

722
0

SE1BS

9
ST153
10000
This
tool
is
used
to

push
a

lip
type
rear
oil
seal
for

L
series

All
Fig
EM
9l

Crankshaft

rear
oil
engine
into

place
by
giving
hammer
blows
L
series

seal
drift

SE189

10
KVI01041S0
This
tool
is

used
to
remove
the

cap
from
main

bearing
All

Fig
EM
25

When

using
thds
tool
turn
its

adapter
into

the
threaded
hole
L
series

Crankshaft
main

in

main

bearing

cap

bearing
cap
puller

KVI0104110

Body

250
9
8

ST165
12001

l

Adapter

se1g0

II
ST166
10001
This
tool
is
used
to

pull
pilot
bushing
out
of

place
All
Fig
EM
66

Pilot

bushing
puller
L
series

SE191

EM
35