1977 DATSUN PICK-UP oil filter

30
Install
heatshieid

plate
on
mani

fold
assembly

31
Install
air

gallery
pipe
on
ex

haust
manifold

32
Install
manifold

gasket
and

manifold

assembly
on

cylinder
head

Tightening
torque

1
2to
1

6kg
m

8
7
to
11
6
ft
lb

33

Install
blow

by
gas

pipe
on

cyl

inder

block
and
tighten
with
rear

engine
slinger

34
Install
thermostat
housing

gas

ket
thermostat

housing
and

thermo

stat

35
Install
thermal
vacuum
valve
on

thermostat

housing
Before

installing

apply
a

liquid
packing
slightly
to
the

threads

36

Install
FJ

C
D
bracket
on

cylin

der

head

37

Install
E
G
R

passage
and

E
G
R
valve
on
intake
manifold

38
Connect
E

G
R
tube
to
E

G
R

tube
and

exhaust
manifold

39
Install
check
valve

on
air

gallery

pipe

40
Install
air
cleaner
bracket
on

intake
manifold

41
Install
air
control
valve
on
air

cleaner
bracket
California
models

42
Install
vacuum
and
fuel
tubes

combined
on

cylinder
head

43
Install
distributor

assembly

44
Install

heatshield
plate

joint

seat

and
carburetor

Carbure10r
tightening

torque

0
5

to
1

0

kg
m
3

6
to
7
2

ft
lb

Note
When

instalUng
joint
seat
be

sure
to

put
the
duct
into

primary

hole
in

intake
manifold

S

J

Heatshield

plate
4
Joint

seat

2

Primary
hole
5

Secondary
hole

3
Duct

EM534

Fig
EM
I06

Installing
carburetor

joint
seat
Engine
Mechanical

45
Install
dash

pot
bracket
and

dash

pot
to
intake

manifold

46
Connect
all
air

vacuum
and
fuel

hoses

and
then

secure
with

clamps

I
Cylinder
block
to

P
C
V
valve

hose

2
A
B

valve
to
E

G
R

passage
vac

uum
hose

3
A
B

valve
to
E
G

R

passage
air

hose

4
Vacuum
tube
to
carburetor
vac

uum
hoses

5
Fuel
ube

to
carburetor
fuel

hose

6
Fuel
tube
to
fuel

pump
fuelhose

7
Distributor
to
vacuum
switch
or

spark
delay
valve
vacuum
hose

8
Air
control
valve
vacuum
hose

9
Check
valve

to
air

control
valve

hose

10
Thermal
vacuum
valve
to

E
G
R
valve
vacuum
hose

I
I
Thermal
vacuum
valve
to

vacuum
tube
hose

47
Install
carburetor
air

cleaner
on

carburetor
and
then
connect
air

and

vacuum
hoses

as
follows

I

Air
cleaner
to

exhaust
manifold

hot

air
duct

2

Air
c1eaner
to
air

pump
hose

3

Air
cleaner
to
rocker

cover
hose

4

Air
cleaner

to
air
control
valve

hose

5

6

48
Install

spark
plugs
in

place

49
Connect
all
distributor

high
ten

sion

cables
to

spark
plugs

50
Install
air

pump
drive
belt
cool

er

compressor
and
idler

pulley

51

Install
left

engine
mounting

bracket

52
Install
clutch

assembly
on

flywheel
with
Clutch

Aligning
Bar

KV30100200
Air

cleaner
to
A
B

valve

hose

Other
vacuum
hoses

Tightening
torque

1
2
to
2
2

kg
m

8

7
to
15
9

ft
lb

EM
26
I

I

KV30100200

EM440

Fig
EM
I07
In

talling
clutch
embly

53

Using
an
overhead
hoist
and

lifting
cable
hoist

engine
away
from

engine
stand
and

then
down
onto

engine
carrier

54
Install

right
engine
mounting

bracket
oil
filter
oil

pressure
switch

oil

level

gauge
and
water

drain

plug

When

installing
oil

filter
fasten
it
to

cylinder
block

by
hand

Note
Do
not

overtighten

flit
or
oil

leakage
may
occur

55
Install
alternator
bracket

adjust

ing
bar
alternator

cooling
fan

and

belt

56

Adjust
the
deflection
of
drive

belts
when

thumb

pressure
is

applied

midway
between

pulleys
A

pressed

force
is
above
10

kg
22
0
lb

Deflection

of
drive
belts

8
to
12
mm

0
315

to
0
472
in

EM613

Fig
EM
lOB
Fan
belt
tension

57
Fill

engine
oil

up
to

specified

level

r

Engine
Mechanical

Tool
number
For
Reference

No
Description
use

page
or

tool
name

Unit
mm
in
on

Figure
No

12
STl742000l
This
tool
is

used
to

prevent
chains
from

falling
out
of

place
All

Fig
EM
19

in

removing
cylinder
heads

or
earn

gears
and
shafts
L
series

Chain

stopper

40
1
S1

r

SE196

13
STl9320oo0

This
tool
is

used
to
take

oil
filter
out

of

place
n

tightening
All

Page
EM4

Oil
filter

wrench
the

filter
do
not
use
this
tool

to

prevent
excess

tightening
models

120
4
7

SE197

14
KV30100200
This
tool
is
used
to
install

clutch

assembly
to

engine
All

Fig
EM

107

L
series

Clutch

aligning
bar

SEGOl

Piston

ring

compressor
This
tool
is

used
to

compress
piston
rings
while

piston
is

being
inserted
into

cylinder
All

Fig
EM
92

models
15
EM03470000

2

SE199

EM
36

ENGINE
LUBRICATION

SYSTEM

ENGINE

LUBRICATION
SYSTEM

CONTENTS

LUBRICATION
CIRCUIT

01
L
PUMP

Removal

Installation

Disassembly
and

assembly
EL
2

EL
2

EL
2

EL
2

EL
3
Inspection

OIL

PRESSURE

REGULATOR

VALVE

OIL
FILTER

RELIEF

VALVE
EL
3

EL
4

EL
4

EL
4

E
L049

Fig
Elr
I

Lubricating
circuit

LUBRICATION

CIRCUIT

The

pressure
lubrication

of
the

engine
is

accomplished
by
a
tro

choid

type
oil

pump
This

pump

draws
the

oil

through
the
oil
strainer

into

pump

housing
and
then
forces
it

through
the
full
flow

type
oil
filter

into
the

main
oil

gallery
Part
of
the

oil
is

supplied
to
all
crankshaft

bearings
chain

tensioner
and

timing

chain

Oil

supplied
to
crankshaft

bearings
is
fed
to

connecting
rod

bearings

through
the
drilled

passages

in
the
crankshaft
Oil

injected
from

jet
holes
on

connecting
rods
Iubri

cates
the

cylinder
walls
and

piston

pins
The

other

part
of
the
oil
is

brought
to

the
oil

gallery
in
the
cylinder
head
to

provide
lubrication

of
the
valve
mechanism

and

timing

chain
as
shown
in

Figure
EL
2

ELOSO

Fig
EL
2

Lubricating
vallie
mechanism

EL
2
From
this

gallery
oil
holes

go

directly
to
all
camshaft

bearings

through
cam

brackets

Oil

supplied

through
the
No
2
and

No
3
camshaft

bearings
is
then
fed

to
the
rocker

arm
valve
and
eam

lobe

through
the

oil

gallery
in

the

camshaft
and
the

small
channel
at
the

base
circle

portion
of
each
earn

OIL

PUMP

The

oil

pump
is

secured
on
the

bottom
of
the
front
cover
with
four

bolts
and
driven

by
the
oil

pump
drive

spindle
assembly
which
is

driven

by

the
helical

gear
on
the
crankshaft

The
oil

pump
assembly
consists
of

an
oil

pressure
regulator
valve
and

outer
and
inn
r

rotors

The

spring
loaded
oil

pressure
regu

lator
valve
limits
the
oil

pressure
to
a

maximum

of
5
6

kg
em
80

psi

Removal

I

Remove
distributor

2

Drain

engine
oil
if

necessary

3

Remove

oil

pump
body
with

drive

spindle

assembly

Installation

I

Before

installing
oil

pump
on

engine
turn
crankshaft

so
that
No
I

piston
is

at
TD
C

ENGINE
LUBRI
CATION
SYSTEM

Note

Pump
rotors
and

body
are
not

serviced

separately
If

pump
rotors

or
body
are

damaged
or
worn

replacement
of
the
entire
oil

pump

assembly
is

necessary

Tightening
torque

Oil

pump
mounting
bolts

Oil

pump
cover
bolts

Regulator
valve

cap
nut

Specifications

Oil

pressure
at

idling

Regulator
valve

spring

Free

length

Pressured

length

Regulator
valve

opening
pressure

OIL
FILTER

The
oil
filter
is
a

cartridge
type

The
oil
filter
element
should
be
reo

placed
periodically
with

the
use
of
Oil

Filter
Wrench
ST19320000

When

installing
an
oil
filter
fasten

it
to

cylinder
block

by
hand

Note
Do
not

overtighten
filter
or
oil

leakage
may
occur
OIL
PRESSURE

REGULATOR
VALVE

The
oil

pressure
regulator
valve
is

not

adjustable
At
the
released

position
the
valve

permits
the
oil

to

by
pass
through
the

passage
in

the

pump
cover
to
the
inlet
side
of
the

pump
Check

regulator
valve

spring
to

ensure
that

spring
tension
is

correct

kg
m
ft
Ib

kg
m
ft
lb

kg
m
ft
lb

kg
cm2

psi

mm
in

mm
in

kg
em
2

psi

RELIEF

VALVE

The
relief
valve
located
at
the

center

portion
securing
oil
fIlter
to

the

cylinder
block

by

passes
the
oil

into
the
main

gallery
when
the
oil

fIlter
element
is

excessively

clogged

STl9320000

EL015

Fig
EL
9

Removing
oil

filter

EL
4
EL014

Fig
EL
B

Regulator
value

l
l

to
1
5
8
0
to
11

0
7
to

1
0
5
Ito
7
2

4

to
5
29
to
36

0
8
to
2
8

II
to
40

52
5
2
067

34
8

1
370

35
to
5
0
50
to
71

With
oil
fIlter
removed
check

valve
unit
for

operation
Inspect
for
a

cracked
or
broken
valve
If

replace

ment
is

necessary
remove
valve

by

prying
it

out
with
a
screwdriver

Install
a
new
valve
in

place
by

tapping
it

EL016

Fig
EL
JO
Relief
lJOlue

No
Tool
number

tool
name

STl9320000

Oil
filter

wrench
ENGINE
LUBRICATION

SYSTEM

SPECIAL

SERVICE
TOOL

Description

Unit

nun
in
For

use

on
Reference

page
or

Figure
No

This
tool
is

used

to
take
oil
f1Iter

out
of

place
In

tightening
All

Fig
EL
9

the
f1Iter
do
not
use
this
tool
to

prevent
excess

tightening
models

I
120
4
7

SE197

EL
6

Engine
Fuel

AUTOMATIC

TEMPERATURE
CONTROL
A
T

C

AIR

CLEANER

DESCRIPTION

OPERATION

A
T
C

AIR
CLEANER

HOT
AIR

OPERATION

A
T
C
AIR
CLEANER
COLD
AIR

OPERATION

A
T
C
AIR
CLEANER
COLD
AND

HOT

AIR
OPERATION

TEMPERATURE
SENSOR

DESCRIPTION

The
air

cleaner
removes
dust
and

dirt
from
the

air
before

it
enters
the

carburetor
and

engine
It
also

muffles

noise

resulting
from
the
intake

of
air

into
the

engine

The
air

cleaner

especially
designed

for

improved
exhaust
emission

control

is
referred
to

as
Automatic

Tempera

ture
Control

Air
Cleaner
In
order
to

reduce
HC
emission

when
the

under

hood

temperature
is

below
300C

860F
the

automatic

temperature

control

system
maintains
the

tempera

ture
of
air
to

be
sucked
in
the

carbure

tor
at
30

to
540C
86
to
1290F

thereby
enabling
lean

setting
for

carburetor

calibration
n

addition
to

this
the

automatic

temperature
con

twl

system
is

effective
to

improve

warm

up
characteristics
of
the

engine
CONTENTS

EF
2

EF
3
VACUUM

MOTOR
AND
AIR

CONTROL

VALVE

REMOVAL
AND

INSTALLATION

TEMPERATURE

SENSOR

VACUUM

MOTOR

FRESH

AIR

DUCT

AIR

CLEANER

INSPECTION

1
AIR

CLEANER
ELEMENT

2

HOT
AIR

CONTROL

SYSTEM
EF
3

EF
4

EF
4

EF
5

and
to

remove

carburetor

icing

The

A
T
C
air

cleaner

system
con

sists

of
the

following
devices

1
Air
cleaner

element

The
air

cleaner

element

employed
is

a

viscous

paper
type
It

requires
only

periodical
replacment
and
should
not

be

cleaned

2

Automatic

temperature
control

air

cleaner

In
the
A

T
C
air

cleaner
the
air

control
valve
is
actuated

by
intake

manifold

vacuum
to
control

the
intake

air
flow

circuit
The

temperature
sen

sor
detects
the

temperature
inside
the

air

cleaner
and

opens
or
closes
the

vacuum

passage

3

Hot
air
duct

The
hot
air
duct
is

mounted
on
the

exhaust
manifold
The
air
warmed

up

EF
2
EF
5

EF

5

EF

5

EF

5

EF
5

EF
6

EF
6

EF

6

EF

6

between
the

exhaust
manifold
and
hot

air
duct

is
led
to
the
air
cleaner

through
the

hose

4
Blow

by

gas
filter

The
blow

by

gas
nIter
removes
dirt

and
oil
from
the

blow

by
gas
sucked

in

the
air
cleaner
from
the

engine
rocker

cover

5

Fresh
air

duct

Except
for

Canada

The
fresh
air

duct
leads
the

outside

fresh
air

directly
to

the
air
cleaner

6
Idle

compensator

See

paragraph
Idle

Compensator

Page
EF
7

7

Altitude

compensator
California

models

See

paragraph
Altitude

Compensa

tor

Page
EF
20

3
Check

diaphragm
for

small
holes

carcks
or
wear

4

Check

rocker
arm
for
wear
at
the

mating
portion
with

camshaft

5

Check
rocker
arm

pin
for
wear
A

worn

pin
may
cause
oil

leakage

6
Check
all

other

components
for

any
abnormalities
and

replace
if
neces

sary

DESCRIPTION

INSPECTION

REMOVAL
AND

INSTALLATION

DESCRIPTION

The
electric
fuel

pump
is

adopted

on
air

conditioner

equipped
models
Engine
Fuel

ASSEMBLY

Reverse

the
order
of

disassembly

Closely
observe
the

following
instruc

tions

L

Use
new

gaskets

2

Lubricate
rocker
ann
rocker
arm

link
and

rocker
arm

pin
before
installa

tion
3

To
test
the

function

proceed
as

follows

Position
fuel

pump
assembly
about

I

meter
3
3
ft

above
fuel
level
of

fuel

strainer
and
connect
a

pipe
from

strainer
to
fuel

pump

Operate
rocker

arm
by
hand
If

fuel

is

drawn

up
soon
after
rocker
arm
is

released

fuel

pump
is

functioning

properly

ELECTRIC
FUEL
PUMP

CONTENTS

EF
11

EF
11

EF
12
DISASSEMBL
Y

ASSEMBL
Y

TROUBLE

DIAGNOSES
AND

CORRECTIONS
EF
12

EF
12

The
silicon
transistor

type
fuel

pump

consists
of

a
transistor
diodes
a

sole

I
Tr

lOsistor

6
Ou
tIet
valve

2

Plunger

7
Return

spring

3

Diaphragm

8
Filter

4

Diode

9

Magnet

5

Magnet
coil

10
Inlet
valve

INSPECTION

I
Disconnect
fuel
hose
at

pump

outlet

2

Connect

a
suitable
hose

approxi

mately
6

mm
0

24
in
inner

dia

meter
to

pump
outlet
ev
J

J

Note
If
diameter
is
too
small
the

following

proper
delivery

capacity

cannot
be
obtained
even
if

pump

functions

properly

EF
11
EF
13

noid
a

pump
mechanism
and
filter

parts

I
T
nsistor

2

Re
ist
f
I

3
Dinde

4

Signal
coil

5
Main
coil

6
Resistor
3

7
Zener
dlOdl

8

Resistor
2

EF719

Fig
EF
22
Construction

of
electric

fuel

pump

3

With
hose
outlet
in
a

higher
posi

tion

than

pump

operate
pump
and

check

delivery
capacity
for
more
than

15

seconds

4

The

capacity
should
be
I
400

cc

There
are
three

types
of
control

system
These
are

J

Closed

type
CIllnkcase
emission

control

system
Emission
Control

System

of

GENERAL

DESCRIPTION

2

Exhaust
emission

control

system

3

Evaporative
ell
lhsion

control

sys

tem

Pericxiic

inspection
and

required
seCV1Clng
of
these

systems
should
be

carried
out

to
reduce

harmful
emis

sions
to
a
minimum

CRANKCASE
EMISSION
CONTROL

SYSTEM

c

01

Lkf

If
1

TIL
II
tll

1

j

GUuuu
DESCRIPTION

This

system
returns

blow

by
gas
to

both
the
intake
manifold
and
carbure

tor
air

cleaner

The

positive
crankcase
ventilation

p
C
V

valve
is

provided
to
conduct

crankcase
blow
by

gas
to
the
intake

manifold

During

partial
throttle

operation
of

the

engine
the
intake
manifold
sucks

the
blow

by
gas
through
the
P
C
V

valve

Normally
the

capacity
of
the

valve

is

sufficient
to
handle

any
blow

by
and

a
small
amount
of

ventilating
air

4

c
Fresh
air

Blow
by

gas
The

ventilating
air

is
then

drawn

from

the
dust
side
of
the
cadlUretor

air
cleaner

tluough
the
tube

con

necting
carburetor
air
cleaner
to
rock

er
cover
into
the

crankcase

Under
full
tluottle

condition
the

manifold
vacuwn
is

insufficient
to

draw

the
blow

by
flow

tluough
the

valve
and
its

flow

goes
through
the

tube
connection
in
the

reverse
diree

tion

On
vehicles
with
an

excessively

high

blow

by
some
of
the
flow
will

go

through
the
tube

connection
to

carbu

retor
air
cleaner
under
all
conditions

1

Sealtypc
oil
level

gauge

2
Bame

plate

3
Flame
arrester

4
Filler

5
P
C
Y
valve

6
Steel
net

7
Bame

plate

EC716

Fig
EC

l
Crankcase
miaion
control

ay
tem

EC

2
INSPECTION

P
c
V
VALVE
AND

FILTER

Checking
P
C
V
valve
in

accord

ance

with
the

following
method

With

engine
running
at
idle

remove

the

ventilator
hose
from
P

C
V
valve

if
the

valve
is

working
a

hissing
noise

will
be
heard
as
air

passes

through
the

valve

and
a

strong
vacuwn
should
be

felt

immediately
when
a

fmger
is

placed
over
valve
inlet

Replace
P
C
V
valve
and

filter
in

accordance
with
the
maintenance

schedule

VENTILATION
HOSE

1

Check
hoses
and

hose
connec

tions
for
leaks

2
Disconnect
all
hoses

and
clean

with

compressed
air

If

any
hose
cannot
be
free
of

obstructions

replace

Ensure
that
flame
arrester

is

surely

inserted
in

hose
between
air
cleaner

and
rocker
cover