Datsun 620 Series 1977 User manual

Type
User manual
AV
C
MANUAL
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ISSAtlIA0101l
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0KYO
J
Atl
FOREWORD
This
service
manual
has
been
prepared
for
the
purpose
of
assisting
service
personnel
of
authorized
NISSAN
DATSUN
dealers
fu
providing
effective
service
and
maintenance
of
the
1977
Datsun
Pick
up
Since
proper
maintenance
and
service
are
absolutely
essential
fu
satisfying
the
Datsun
owners
this
inan
la1
should
be
kept
fu
a
handy
place
for
ready
reference
and
should
be
carefuny
studied
This
man
la1
fucludes
procedures
for
ma
futenance
ac
1justrnents
minor
service
operations
remowl
and
installation
and
for
disassembly
and
assembly
of
components
Some
of
these
service
operations
require
the
use
of
Special
Tools
especially
designed
for
effectiveperfonnance
of
service
operations
The
special
tools
are
presented
in
the
SE
section
As
you
read
through
the
maintenance
procedures
in
this
service
manual
you
will
occasionally
corne
across
paragraphs
headed
NOTE
or
CAUTION
A
NOTE
is
supplemental
infortl1ation
that
is
important
to
B
particular
procedure
CAUTION
warns
of
steps
that
must
be
fonowed
to
prevent
personal
injury
and
Qr
damage
to
some
part
of
your
DATSUN
The
Quick
Reference
Index
on
the
first
page
enables
the
user
to
quickly
locate
the
desired
section
At
the
beginning
of
each
individual
section
is
a
table
of
contents
which
gives
the
page
number
on
which
each
major
subject
begins
An
index
is
placed
at
the
beginning
of
each
major
subject
within
the
section
All
information
illustrations
and
specifications
contained
in
this
manual
are
based
on
the
latest
product
information
available
at
the
time
of
publication
approval
If
YOUT
DATSUN
model
differs
from
the
specifications
contained
in
this
manual
consult
your
NlSSAN
DATSUN
dealer
for
information
Rights
for
alteratiohat
any
time
of
specifications
and
methods
are
reserved
liability
for
any
personal
injury
or
property
damage
occasioned
by
the
use
of
this
service
man
la1
in
effecting
maintenance
or
repair
of
your
Datsun
is
in
no
way
assumed
by
Nissan
M9tor
Co
Ltd
Accordingly
anyone
using
a
service
procedure
or
tool
which
is
not
specifically
w
mended
by
Nissan
must
fust
completely
satisfy
himself
that
neither
his
safety
nor
the
vehicles
safety
wi11be
jeopardized
by
the
service
method
selected
NISSAN
MOTOR
CO
LTD
TOKYO
JAPAN
@
1976
N1SSAN
MOTOR
CO
LTD
Printed
in
Japan
DATSUN
PICK
UP
MODEL
620
SERIES
I
NISSAN
I
NISSAN
MOTOR
CO
LTD
TOKYO
JAPAN
I
SECTION
GI
GENERAL
INFORMATION
GENERAL
INFORMATION
GI
3
General
Informa
ion
Fig
GI
I
Standord
wheelbase
model
Fig
GI
2
Delux
Cob
GI
2
General
Information
L
GENERAL
INFORMATION
CONTENTS
MOOEL
VARIATION
GI
3
APPROXIMATE
REFILL
CAPACITIES
GI
B
IDENTIFICATION
NUMBERS
GI
5
RECOMMENDED
FUEL
GI
B
LIFTING
POINTS
AND
TOWING
GI
B
RECOMMENDED
LUBRICANTS
GI
8
LIFTING
POINTS
GI
B
RECOMMENDED
SAE
VISCOSITY
SUPPORTABLE
POINTS
GI 7
NUMBER
GI 8
TOWING
GI
7
LUBRICANT
SPECIFICATIONS
GI
g
TIE
DOWN
GI
7
MODEL
VARIATION
Differential
Pay
load
Destination
Class
Model
Engine
Transmission
carrier
model
kg Ob
and
gear
ratio
I
HL620TUV
F4W7lB
Standard
I
HL620FTUV
FS5W71
B
wheelbase
S
I
HL620KTUV
3N7lB
E
I
HLG620TUV
Ol
F4W7lB
u
0
0
E
Long
E
I
HLG620FTUV
0
FS5W71B
wheelbase
0
I
HLG620KTUV
8
a
3N7lB
0
Ol
0
u
I
KHL620TUV
Ol
F4W7lB
u
Deluxe
I
KHL620FTUV
FS5W7lB
Cab
KHL620KTUV
3N7lB
Hl90
500
11
00
L20B
4
375
u
i
0
HL620TU
F4W71
B
Standard
HL620FTU
FS5W7l
B
wheelbase
U
HL620KTU
3N7lB
S
0
I
HLG620TU
0
E
F4W7lB
0
8
Long
I
HLG620FTU
0
FS5W7lB
wheelbase
IHLG620KTU
Q
u
3N7lB
0
0
Z
KHL620TU
F4W71B
Deluxe
Q
KHL620FTU
FS5W7l
B
Cab
I
KHL620KTU
3N7lB
GI 3
r
General
Information
Differential
Pay
load
Destination
Class
Model
Engine
Transmission
carrier
model
kg
lb
and
gear
ratio
Standard
HL620TUN
F4W71B
wheelbase
HL620KTUN
3N71B
0
HLG620TUN
F4W7IB
Long
E
wheelbase
2
I
HLG620KTUN
Hl90
Canada
L20B
3N71B
500
1
100
4
375
I
KHL620TUN
F4W71B
0
Deluxe
Z
I
KHL620FTUN
Cab
FS5W7IB
I
KHL620KTUN
3N7JB
Model
identification
KHLG620KTUV
I I
L
U
V
N
T
K
F
0
G
o
H
K
I
Note
0
means
no
identification
Destined
for
U
s
A
and
Canada
California
model
Canada
model
Floor
shift
vehicle
Automatic
transmission
5
speed
manual
transmission
4
speed
manual
transmission
Long
wheelbase
Standard
wheelbase and
Deluxe
Cab
Equipped
with
L20B
engine
Deluxe
Cab
GI
4
IDENTIFICATION
NUMBERS
The
unit
and
vehicle
numbers
are
stamped
and
registered
at
the
factory
The
engine
and
vehicle
identifica
tion
numbers
are
used
on
legal
docu
ments
These
numbers
are
used
for
factory
communications
such
as
Technical
Reports
Warranty
Claims
Service
Journals
and
other
informa
tion
Vehicle
IdentHication
plate
The
vehicle
identification
plate
is
located
at
the hood
ledge
in
the
engine
compartment
SP029
Fig
GI
3
Vehicle
identification
plat
location
Vehicle
serial
number
The
vehicle
serial
number
is
stamp
ed
on
the
upper
face
of
the
right
side
member
The
number
is
identified
by
the
follQwing
flgUres
as
a
serial
number
HL620
XXXXXX
I
Serial
number
Vehicle
model
j
e
G1268
Vehicle
serial
number
location
Fig
GI
4
General
Informa
tion
Engine
serllii
number
The
engine
serial
number
is
stamped
on
the
right
hand
side
of
the
cylinder
block
L20B
XXXXXX
I
Serial
number
Engine
model
k
Color
code
number
The
color
code
number
label
is
stuck
on
the
radiator
support
GI326
Fig
01
6
Color
code
number
label
location
M
V
S S
c
rtlflcatlon
label
The
M
V
S
S
certification
label
is
located
at
the
driver
side
lock
pillar
Gl
5
tW
I
1
I
il
j
SP031
Fig
GI
7
M
V
S S
certification
label
location
Vehicle emission
control
Information
label
The
vehicle
emission
control
infor
mation
label
is stuck
on
the
insicre
of
the
hood
panel
SP076
Fig
GI
B
Vehicle
emia
ion
control
information
label
location
Manual
transmission
number
The transmission
serial
number
is
stamped
on
the
front
upper
face
of
transmission
case
Number
system
x
X
XXXXX
I
Serial
number
monthly
Month
of
manufacture
2 9
X
Y
Z
Line
code
of
manufacture
Fig
GI
9
Manual
trammiuion
number
location
Automatic
transmission
number
The
transmission
serial
number
is
attached
to
the
right
hand
side
of
transmission
case
Numbering
system
X
XXXXX
I
Serial
number
monthly
Month
of
manufacture
I
2
9
X Y
Z
last
figure
of
year
of
manufacture
AT344
Fig
01 10
Automatic
trammi
sion
number
location
LIFTING
POINTS
AND
TOWING
LIFTING
POINTS
Screw
jack
Before
using
the
jack
proceed
a
follows
Generallnforml
ition
Apply
parking
brake
firmly
and
block
rear
wheels
if
the
front
of
the
vehicle
is
to
be
raised
Notes
a
Never
get
under
the
vehicle
while
it
is
supported
only
by
the
jack
Always
use
safety
stands
to
support
frame
or
rear
axle
case
when
you
have
to
get
beneath
the
vehicle
b
In
no
event
should
the
jack
be
applied
to
any
points
except
the
following
specified
portions
When
jacking
up
the
front
side
place
a
screw
jack
under
side
frame
about
520
nun
20
5
in at
rear
of
front
axle
center
WT012
Fig
GI
ll
Front
lifting
point
When
jacking
up
the
rear
side
place
a
screw
jack
under
rear
axle
case
close
to
the
side
of
rear
spring
WH077
Fig
GI
12
Reor
lifting
point
Notes
a
When
the
yellow
mark
appean
on
the
screw
jack
it
indicates
the
maximum
permissible
height
Do
not
jack
up
further
b
When
the
jack
is
at
lower
llinit
do
not
add
large
force
downward
GI
6
YeDow
mark
WHOSO
Fig
GI
13
Warning
ogai
t
over
stroke
Garage
Jack
Note
When
carrying
out
operntions
with
a
garage
jack
be
sure
to
support
the
vehicle
withstands
in
a
safe
manner
When
jacking
up
the
front
end
apply
garage
jack
to
front
cross
member
or
center
portion
of
sus
pension
member
When
jacking
up
the
rear
end
apply
the
jack
to
rear
axle
case
r
J
uc
I
GI075
n9
Fig
GI
14
Front
lifting
point
GI076
Fig
GI
15
Rear
lifting
point
SUPPORTABLE
POINTS
The
front
supportable
points
are
under
frame
side
member
The
rear
supportable
points
are
under
rear
axle
case
Fig
GI
16
Front
supportable
points
v
GI078
Fig
GI
17
Rear
supportable
points
TOWING
When
the
vehicle
is
to
be
towed
forward
connect
a
rope
securely
to
the
hook
under
the
1st
CrosSIn
ember
Before
towing
make
sure
the
parking
brake
is
released
General
Information
To
tow
another
car
connect
t1ie
rope
to
rear
leaf
spring
shackle
Notes
a
A
towing
rope
should
not
be
con
nected
to
any
position
other
than
as
described
above
b
Avoid
applying
load
suddenly
to
a
towing
rope
as
it
may
cause
dam
age
WH131
Fig
Gl
18
Fronttowing
point
Fig
01
19
Rear
towing
point
GI 7
Manual
transmission
Before
towing
make
sure
the
trans
mission
is
in
neutral
gear
If
the
rear
axle
or
transmission
is
inoperative
the
vehicle
should
be
towed
with
its
rear
wheels
off
the
ground
or
the
propeller
shaft
must
be
re
l1oved
Automatic
transmission
When
the
vehicle
is
towed
on
its
rear
wheels
make
sure
the
trans
mission
is
in
N
Neutral
position
Don
t
exceed
30
km
h
20
MPH
and
a
distance
of
Hi
kin
6
miles
If
the
rear
axle
or
transmission
is
inoperative
or
if
the
speed
exceed
the
above
condi
tions
the
vehicle
must
be
towed
with
its
rear
wheels
off
the
ground
or
the
propeller
shaft
must
be
removed
Note
When
the
vehicle
is
towed
with
its
front
wheels
on
the
ground
the
steering
wheel
shouId
be
secured
to
maintain
a
straight
ahead
position
TIE
DOWN
The
front
two
tie
down
hooks
are
located
under
the
1st crosSInember
The
hook
is
available
as
a
towing
hook
For
rear
tie
down
the
rear
leaf
spring
shackle
be
used
lIDs
point
is
also
used
as
a
towing
point
General
Information
APPROXIMATE REFILL
CAPACITIES
I
Uter
u
s
measure
Imper
measure
Fuel tank
I
45
J
IUi
gal
9
Ji
gal
Cooling
system
ManUal
transmission
I
8
0J
I
8Jiqt
7
qt
with
heater
Automatic
tr
smission
I
7
8J
I
8Y
qt
6Jiqt
Engine
lubrication
with
oil
f1lter
I
4
3J
I
4
Ji
qt
3
qt
system
without
oil
f1lter
I
3
8J
I
3Xqt
4
ql
I
4
speed
transmission
I
1
7J
I
3X
pl
3
pI
Manual
transmission
I
5
speed
transmission
I
2
0
I
4Y
pt
3Mpt
Automatic
transmission
I
5s J
I
5Uqt
4Uqt
Steering
gear
box
I
0
33J
I
pt pt
Differential
carrier
I
1
0
J
I
2M
pI
I
pt
RECOMMENDED
FUEL
Use
an
unleaded
or
low
lead
gasoline
with
a
minimum
octane
rating
of
91
RON
Research
Octane
Nuniber
For
California
models
use
only
unleaded
gasoline
to
protect
the
catalytic
converter
from
contamina
tion
RECOMMENDED
LUBRICANTS
RECOMMENDED
SAE
VISCOSITY
NUMBER
C
ENGINE
on
12O
II
O
10Vt4ll
10Wf
2
I
ICWI
I
ao 40
J
SAE
5W
20
oils
ate
not
lecom
mended
for
sustained
high
speed
drivin
GEAR
On
I
J
w
c
30 20
0
20 40 60 80
100
Temperature
Range
Anticipated
Before
Next
Oil
Change
OF
GI
8
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
DATSUN
PICK
UP
MODEL
620
SERIES
I
NISSAN
I
NISSAN
MOTOR
CO
LTD
TOKYO JAPAN
SECTION
ET
ENGINE
TUNE
UP
ENGINE
TUNE
UP
ET
2
BASIC
MECHANICAL
SySTEM
ET
7
IGNITION
AND
FUEL
SYSTEM
EMISSION
CONTROL
SYSTEM
ET
13
SERVICE
DATA
AND
ET
25
SPECIFICATIONS
TROUBLE
DIAGNOSES
AND
CORRECTIONS
ET
9
H
27
Engine
Tune
up
ENGINE
TUNE
UP
CONTENTS
LOCATION
OF
EMISSION
CONTROL
SYSTEM
COMPONENTS
INon
California
models
LOCATION
OF
EMISSION
CONTROL
SYSTEM
COMPONENTS
California
models
ET
2
EMISSION
CONTROL
SYSTEM PIPING
lNon
California
models
EMISSION
CONTROL
SYSTEM
PIPING
California
models
EMISSION
CONTROL
DEVICES
ET
3
LOCATION
OF
EMISSION
CONTROL
SYSTEM
COMPONENTS
Non
California
models
I
Thermal
vacuum
valve
2
Check
valve
3
Air
gallery
pipe
4
Auto
choke
5
Automatic
temperature
control
air
cleaner
6
Anti
Backfire
valve
A
B
valve
7
Bo05t
Controlled
Deceleration
Device
8
C
D
D
8 P
C
V
valve
9
Air
relief
valve
10
E
G R
control
valve
11
Air
pump
air
cleaner
12
Carbon
canister
13
Air
pump
14
Spark
delay
valve
AfT
models
j
ET
4
ET
5
ET
6
6
7
@
9
ET365
Fig
ET
l
Location
of
ema
ion
control
sy
tern
component
Non
California
mod
I
ET
2
Engine
Tune
up
LOCATION
OF
EMISSION
CONTROL
SYSTEM
COMPONENTS
California
models
8
7
8
cv
@
1
Thennal
vacuum
valve
2
Check
valve
3
Altitude
compensator
in
air
cleaner
4
Air
gallery
pipe
5
Auto
choke
qj
6
Automatic
temperature
control
air
cleaner
7
Anti
Backfire
valve
A
B
valve
8
Boost
Controlled
Deceleration
Device
B
C D
O
9 P
C
V
valve
10
Air
relief
valve
11
E
G
R
control
valve
12
6
C
D D control
valve
and
solenoid
valve
13
Emergency
air
relief
valve
14
Air
pump
air
cleaner
IS
Carbon
canister
16
Air
control
valve
17
Air
pump
ET366
Fig
ET
2
Location
01
emiuion
control
sydem
component
California
mod
a
ET3
r
Engine
Tune
up
EMISSION
CONTROL
SYSTEM
PIPING
Non
California
models
1
Vacuum tube
to
distributor
yellow
2
Vacuum
tube
to
carbon
canister
yeUow
3
Vacuum
tube
to
thermaJ
vaCuum
valve
white
4
Vacuum
tube
5
Vacuum
tube
to
carburetor
yellow
6
Thermal
vacuum
valve
to
E
G
R
control
valve
white
7
Vacuum tube
to
carburetor
white
8
A
B
valve
to
vacuum
connector
green
9
Vacuum
tube
to
carbon
canister
yellow
10
S
D V
to
distributor
yellow
11
Vacuum
tube
to
S
D
V
yellow
ET367
Fig
ET
3
Emi8
ion
control8
stem piping
Non
California
models
ET
4
Engine
Tune
up
EMISSION
CONTROL
SYSTEM
PIPING
California
models
1
Vacuum
tube
to
distributor
yellow
2
Vacuum
tube
to
carbon
canister
yellow
3
Thermal
Vacuum
valve
to
E G
R
control
valve
white
4
Vacuum
tube
to
thermal
vacuum
valve
white
5
Vacuum
tube
6
Vacuum tube
to
carburetor
yellow
7
Vacuum
hose
connector
to
intake
manifold
green
8
Vacuum
tube
to
carburetor
white
9
Air
con
tro
valve
to
vacuum
hose
connector
green
10
A
B
valve
to
vacuum
connector
green
11
D
C D D
to
control
valve
white
12
B
C
D D control
valve
to
intake
manifold
green
13
Vacuum
hose
connector
to
E
A
R
control
valve
green
14
D
C D
D
control
valve
to
air
pump
air
cleaner
ET368
Fig
ET
4
Emission
control
system
piping
California
models
ET5
EMISSION
CONTROL
DEVICES
Enj
Jn
illUde
I
I
AI4
I
L20H
I
11210
FlU
620
NOll
Califor
Non
aUfon
C
hfor
C
lifomla
lIIodch
EJ
L
lPI
Canada
models
Cilnada
CalifornIa
Non
CaliflJl
model
forC
anada
models
Except
modcb
rllodet
Canada
I
M
T
I
AlT
I
M
T
I
AlT
I
M
T
I
A
T
M
T
M
T
I
AfT
M
T
I
AfT
I
A
T
C
Jtrc1cancr
wllh
l1r
numn
rclirfvalvc
I
I
I
X
I
X
I
X
I
X
I
X
I
X
I
I
1
X
I
I
A
T
e
lliT
dl
1er
wilh
l
4t
air
llUlilprCn
rv
I
wflh
tlitlji
Jc
m1JC
ill
i
l
I
I
I
X
I
I
I
I
I
I
AIR
CLEANER
I
A
T
e
air
deaner
with
air
PUlnt
relicI
valve
wilh
iltitudc
compcn
alor
valvel
1
I
I
I
X
I
X
I
I
I
hlle
comDenlator
duallvQe
X
X
X
I
X
I
X
X
X
X
X
I
X
X
I
X
I
X
F
lh
air
due
fo
introducinil
ullidc
air
I
X
I
X
I
X
I
X
I
X
I
X
X
I
X
I
X
I
X
1
X
I
X
I
X
ENGINE
I
Early
fuclcvuporatlYe
sYltem
exhaust
hcalm
I
X
I
X
I
X
I
X
I
X
I
X
X
I
I
X
I
X
I
X
I
X
X
PROPER
X
P
T
C
auluchnkc
I
I
X
1
X
I
X
I
X
X
X
I
X
X
X
I
X
X
X
I
a
c
OO
with
l
onlrol
lIve
I
I
I
I
I
I
I
X
X
CARBURETOR
I
8
C
D
0
without
control
valve
control
valve
attached
to
body
I
I
I
I
X
I
X
m
Throltle
o
ncr
with
control
val
l
X
X
X
X
X
X
X
l
Onlhoot
I
X
I
X
I
X
I
X
I
X
X
X
I
X
I
X
X
I
X
I
X
X
c
I
Altitude
c
Jmpcmalor
with
pipe
fo
U
IC
in
air
bleed
I
X
I
X
I
I
I
I
X
I
X
I
X
0n
tranmlor
unIt
Oiltribulor
II
olck
UD
I
X
I
X
I
I
I
I
X
I
I
X
I
X
I
IGNITION
T
C
S
ISwilchin
valve
I
m
d
llI11OfCuioll
C
l
1J1
TO
l
X
X
X
X
I
X
X
X
I
j
x
SYSTEM
I
S
D
V
Sn
arkdelayvalvc
I
I
I
X
I
I
I
I
I
T
V
V
Thermal
vlcuum
a
vc
r
c
s
I
X
I
X
I
X
I
X
I
X
I
X
X
X
I
X
I
I
I
I
Air
pump
AlP
all
cleaner
Ched
valve
A
B
vlllvc
I
X
X
I
X
I
X
I
X
I
X
X
X
I
X
X
I
X
X
I
X
1
C
A
t
valve
fAir
eonlrol
valve
E
A
R
valve
Rcliefvalvel
X
X
I
X
I
A
I
S
I
Airconlrot
valve
I
I
I
I
X
I
X
I
E
A
R
valve
I
I
I
I
X
I
X
I
Rcliervalvc
I
I
X
I
X
I
X
I
X
X
I
X
I
X
I
X
X
I
X
r
E
G
R
VUIVllID
P
T
svstem
I
X
X
I
X
I
X
I
I
X
X
E
G
R
LG
R
v
lvr
Ive
sv
tem
I
I
X
I
X
I
I
X
X
I
X
X
I
X
SYSTEM
fThermal
acuum
valve
E
C
R
X
X
I
X
I
X
I
X
X
X
X
I
X
I
X
I
X
X
I
X
T
C
J
ITon
cut
E
G
R
I
I
I
X
I
I
I
X
I
I
Wamin
device
e
l
ry
12
500
mile
maintenance
I
I
I
I
I
I
I
I
I
X
I
X
CATALYZER
e
lalvIIC
ln
rler
X
X
I
I
I
I
X
I
I
I
X
I
X
Fluor
h
mocrature
waminl
5Vllcm
with
noor
ICnlor
I
X
X
I
I
I
I
X
I
I
I
X
I
X
Newly
equipped
unit
1917
models
Remark
X
Available
Not
available
M
T
AlT
A
T
C
PT
Ch
T
V
V
C
A
C
Maouallrammln
Automallctunsmls
Automatic
temperature
control
Positive
temperature
cod
icll
nt
Thermal
vacuum
valve
Combined
oLir
control
8
C
0
D
T
C
S
S
D
V
T
C
E
B
P
T
V
c
Boolt
controlled
deceleration
dov
Tran
mlu
controlled
vacuum
advam
system
Spark
delay
valve
TransmlSl
ulI
controlled
exhausl
gu
recnculltlOn
1
lIem
Back
preuure
nansduce
Vacuum
AJ
S
A
B
vlllve
E
A
R
V
Jlvc
E
C
R
V
O
V
T
C
E
AHmjcL
Anu
b
H
ktiu
alvc
Emer
cncy
relief
alvc
E
dlllu
ll
r
r
ula
Vacuum
dclay
11Ie
Tup
E
G
R
E
l
l
epl
t
orCanuda
lIIIII
m
J
C
r
l
l
cJ
l
c
0
Engine
Tune
up
BASIC
MECHANICAL
SYSTEM
ADJUSTING
INTAKE
AND
EXHAUST
VALVE
CLEARANCE
CHECKING
AND
ADJUSTING
DRIVE
BELT
RETIGHTENING
CYLINDER HEAD
BOLTS
MANIFOLD
NUTS
AND
CARBURETOR
SECURING
NUTS
CHECKING
ENGINE
OIL
REPLACING
OIL
FILTER
CHANGING
ENGINE
COOLANT
ADJUSTING
INTAKE
AND
EXHAUST
VALVE
CLEARANCE
Note
After
tightening
cylinder
head
bolts
adjust
intake
and
exhaust
valve clearances
Valve
clearance
adjustment
is
impossible
when
the
engine
is
in
oper
ation
1
Loosen
pivot
locking
nu
t
and
turn
pivot
screw
until
the
specified
clearance
is
obtained
while cold
Using
service
tool
tighten
pivot
locking
nut
securely
after
adjustment
and
recheck
the
clearance
2
Warm
up
engine
for
at
least
several
minutes
and
stop
it
Measure
valve
clearance
while
hot
If
out
of
specifications
adjust
Unit
mm
in
Intake
0
20
0
008
Cold
Exhaust
0
25
0
010
Intake
0
25
OmO
Wann
I
Exhaust
0
30
0
012
STl
064000
I
ET009
Fig
ET
5
Adjusting
valve
clearance
CONTENTS
ET
7
PERMANENT
ANTI
FREEZE
COOLANT
CHECKING
COOLING
SYSTEM
HOSES
AND
CONNECTIONS
INSPECTION
OF
RADIATOR
CAP
COOLING
SYSTEM
PRESSURE
TEST
CHECKING
VACUUM
FITTINGS
HOSES
AND
CONNECTIONS
CHECKING
ENGINE
COMPRESSION
COMPRESSION
PRESSURE
TEST
TEST
RESULT
ET
7
ET7
ET
B
ET
B
ET
B
CHECKING
AND
ADJUSTING
DRIVE
BELT
ET
B
ET
B
ET
B
ET
B
ET
B
ET
9
ET
9
ET
9
2
Normal
drive
belt
deflection
is
8
to
12
mm
0
315
to
0
472
in
when
moderate
thumb
pressure
is
applied
midway
between
pulleys
1
Check
for
cracks
or
damage
Re
place
if
necessary
Compressor
pulley
8
to
12
mm
0
315
to
0
472
in
Idler
pulley
Water
pump
pulley
8
to
12
mm
0
315
to
0 472
in
Air
pump
pulley
Alternator
AC456
Fig
ET
6
Driue
belt
tension
RETIGHTENING
CYLINDER
HEAD
BOLTS
MANIFOLD
NUTS
AND
CARBURETOR
SECURING
NUTS
Tightening
torque
Cylinder
head
bolts
1st
turn
4
0
kg
m
29
ft
Ib
2nd
turn
6
0
kg
m
43
ft
Ib
3rd
turn
65
to
85
kg
m
47
to
61
ft
lb
Refer
to
the
following
tightening
torque
specifications
ET
7
r
ManifolJ
nuts
I
2
to
1
6
kg
m
8
7
to
I
6
ft
lb
Carburelor
nuls
05
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
43
liters
4
MUS
qt
3
Y
Imp
qt
Minimum
L
level
33
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
09
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
80
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
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Datsun 620 Series 1977 User manual

Type
User manual

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