service DATSUN PICK-UP 1977 User Guide
Page 73 of 537
Valve
spring
pressured
length
valve
open
Intake
and
exhaust
Outer
Inner
Valve
spring
assembled
height
valve
close
Intake
and
exhaust
Outer
Inner
Valve
guide
length
Intake
and
exhaust
Valve
guide
height
from
head
surface
Valve
guide
inner
diameter
Intake
and
exhaust
Valve
guide
outer
diameter
service
parts
Intake
and
exhaust
Valve
guide
to
stem
clearance
Intake
Exhaust
Valve
seat
width
Intake
Exhaust
Valve
seat
angle
Intake
and
exhaust
Valve
seat
interference
fit
Intake
Exhaust
Valve
guide
interference
fit
b
Camshaft
and
timing
chain
Camshaft
end
play
Camshaft
lobe
ift
Intake
and
exhaust
Camshaft
joumal
diameter
1st
2nd
3rd
and
4th
Engine
Mechanical
mm
kg
in
lb
mm
kg
in
lb
mm
in
mIll
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
rnm
in
rnm
in
mm
in
Camshaft
bend
mm
in
Camshaft
journal
to
bearing
clearance
mm
in
Camshaft
bearing
inner
diameter
rnm
in
1st
2nd
3rd
and
4th
29
5
49
0
1
IM
108
24
5
25
5
0
965
56
2
40
0
21
3
1
575
47
0
35
0
12
3
1
378
27
I
59
0
2
323
10
6
0
417
8
000
to
8
018
0
3150
to
0
3157
12
223
to
12
234
0
4812
to
0
4817
0
020
to
0
053
0
0008
to
0
0021
0
040
to
0
073
0
0016
to
0
0029
1
4
to
1
6
0
0551
to
0
0630
1
8
to
2
2
0
0709
to
0
0866
450
0
081
to
0
113
0
0032
to
0
0044
0
064
to
0
096
0
0025
to
0
0038
0
027
to
0
049
0
0011
to
0
0019
0
08
to
038
0
0032
to
0
0150
7
0
0
276
47
949
to
47
962
1
8877
to
1
8883
0
02
0
0008
0
Q38
to
0
067
0
00
I
5
to
0
0026
48
000
to
48
016
1
8898
to
1
8904
EM
28
Page 74 of 537
Engine
Mechanical
c
Connecting
rod
Center
distance
mm
in
Bearing
thickness
Standard
mm
in
Big
end
play
mm
in
Connecting
rod
bearing
clearance
mm
in
Connecting
rod
bend
or
torsion
per
100
mm
or
2
937
in
mm
in
d
Crankshaft
and
main
bearing
Journal
diameter
Journal
taper
out
of
round
Crankshaft
free
end
play
Wear
limit
of
dittoed
play
Crank
pin
diameter
Crank
pin
taper
out
of
round
Main
bearing
thickness
StJlndard
146
5
748
1
493
to
1
506
0
0588
to
0
0593
0
20
to
0
30
0
008
to
0
012
0
D25
to
0
055
0
0010
to
0
0022
less
than
0
03
0
0012
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
59
942
to
59
955
2
3599
io
2
3604
less
than
0
0
I
0
0004
0
05
to
0
18
0
0020
to
0
0071
0
3
0
0118
49
961
to
49
974
1
9670
to
1
9675
less
than
0
01
0
0004
1
827
to
1
835
0
0719
to
0
0722
0
020
to
0
062
0
0008
to
0
0024
0
12
0
0047
0
05
0
0020
Main
bearing
clearance
mm
in
Wear
limit
of
dittoed
clearance
mm
in
Crankshaft
bend
mm
in
Flywheel
runout
at
clutch
disc
contact
face
mm
in
e
Piston
Pistondiarneter
Service
standard
0
50
0
0197
Oversize
1
00
0
0394
Oversize
Ring
groove
width
Top
Second
Oil
Piston
to
bore
clearance
Piston
pin
hole
off
set
Piston
pin
hole
diameter
f
Piston
pin
Pin
diameter
Pin
length
less
than
0
15
0
0059
mm
in
84
985
to
85
035
3
3459
to
3
3478
85
465
to
85
515
3
3648
to
3
3667
85
965
to
86
015
3
3844
to
3
3864
2
030
to
2
050
0
0799
to
0
0807
2
020
to
2
040
0
0795
to
0
0803
4
015
to
4
040
0
1581
to
0
1591
0
Q25
to
0
045
0
0010
to
0
0018
0
95
to
1
05
0
0374
to
0
0413
21
001
to
21
008
0
8268
to
0
8271
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
20
993
to
20
998
0
8265
to
0
8267
72
25
to
73
00
2
8445
to
2
8740
0
008
to
om
0
0
0003
to
0
0004
mm
in
Piston
pin
to
piston
clearance
mm
in
Interference
fit
of
piston
pin
to
connecting
rod
bushing
mm
in
om
5
to
0
035
0
0006
to
0
00
I
4
EM
29
Page 80 of 537
Engine
Mechanical
SPECIAL
SERVICE
TOOL
No
Tool
number
tool
name
Description
Unit
mm
in
Engine
stand
assembly
This
engine
stand
assembly
is
used
for
disassembling
or
assembling
engine
block
or
differential
carrier
throughout
3600
in
all
directions
ST050lS000
ST050
11000
Engine
stand
ST050
12000
Base
For
use
on
Reference
page
or
Figure
No
All
Fig
EM
II
models
SE184
2
ST0526oo0l
This
engine
attachment
is
installed
to
engine
stand
Ll6
Fig
EM
II
ST0501S000
in
disassembling
or
assembling
engine
Ll8
Engine
attachment
L20B
Q
li
SE185
3
STl
0120000
Special
hollow
set
bolts
are
used
in
tightening
cylinder
heads
All
Fig
EM
18
in
L
series
engines
This
wrench
is
used
to
torque
cylinder
L
series
Cylinder
head
bolt
head
bolts
and
its
head
can
be
inserted
into
the
torque
1
rench
wrench
10
0
39
SE186
4
STl
064000
I
This
tool
is
used
togetller
with
a
torque
wrench
in
tightening
pivot
lock
nut
for
valve
clearance
adjustment
Pivot
adjuster
SE187
EM
33
All
Fig
EM
105
L
series
Page 84 of 537
DATSUN
PICK
UP
MODEL
620
SERIES
I
NISSAN
J
NISSAN
MOTOR
CO
LTD
TOKYO
JAPAN
SECTION
EL
ENGINE
LUBRICATION
SYSTEM
ENGINE
LUBRICATION
SYSTEM
EL
2
SERVICE
DATA
AND
EL
5
SPECIFICATIONS
TROUBLE
DIAGNOSES
AND
EL
5
CORRECTIONS
SPECIAL
SERVICE
TOOLS
EL
6
Page 87 of 537
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
Page 88 of 537
ENGINE
LUBRICATION
SYSTEM
SERVICE
DATA
AND
SPECIFICATIONS
Oil
pump
Standard
Wear
limit
mm
in
0
04
to
0
08
0
0016
to
0
0032
less
than
0
12
0
0047
0
15
toO
21
0
0059
to
0
0083
0
20
0
0079
0
20
0
0079
0
5
0
0197
Rotor
side
clearance
rotor
to
bottom
cover
Rotor
tip
clearance
mm
in
Outer
rotor
to
body
clearance
mm
in
Oil
pressure
regulator
valve
Oil
pressure
at
idling
Regulator
valve
spring
Free
length
Pressured
length
Regulator
valve
opening
pressure
kg
cm2
psi
0
8
to
2
8
II
to
40
mm
in
mmOn
kg
em2
psi
52
5
2
067
34
8
1
370
3
5
to
5
0
50
to
71
Tightening
torque
Oil
pump
bolt
Oil
pump
cover
bolt
Regulator
valve
cap
nut
kg
m
ft
lb
kg
m
ft
lb
kg
m
ft
Ib
1
1
to
1
5
8
0
to
10
8
0
7
to
1
0
5
1
to
7
2
4
to
5
29
to
36
TROUBLE
DIAGNOSES
AND
CORRECTIONS
Condition
Probable
causes
Corrective
actions
Oil
leakage
Damaged
or
cracked
body
cover
Oil
leakage
from
gasket
Oil
leakage
from
regulator
valve
Oil
leakage
from
blind
plug
Replace
Replace
Tighten
or
replace
Replace
Decreased
oil
pressure
Leak
of
oil
in
engine
oil
pan
Dirty
oil
strainer
Damaged
or
worn
pump
rotors
Faulty
regulator
Use
of
poor
quality
engine
oiL
Correct
Clean
or
replace
Replace
Replace
Replace
Warning
light
remains
on
engine
running
Decreased
oil
pressure
Oil
pressure
switch
unserviceable
Electrical
fault
Previously
mentioned
Replace
Check
circuit
Noise
Excessive
backlash
in
pump
rotors
Replace
EL
5
Page 89 of 537
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
Page 90 of 537
DATSUN
PICK
UP
MODEL
620
SERIES
L
NISSAN
I
NISSAN
MOTOR
CO
LTD
TOKYO
JAPAN
SECTION
CO
COOLING
SYSTEM
COOLING
SYSTEM
SERVICE
DATA
AND
SPECIFICATIONS
TROUBLE
DIAGNOSES
AND
CORRECTIONS
CO
2
CO
6
CO
7
Page 95 of 537
r
direction
when
hoses
are
assembled
3
Ensure
that
clearance
between
radiator
hose
and
any
adjacent
parts
is
30
mm
I
181
in
minimum
On
mod
els
equipped
with
air
conditions
a
minimum
clearance
of
18
mm
0
709
in
should
exist
between
compressor
and
hose
4
Ensure
that
clearance
between
shroud
and
fan
is
even
at
any
place
Note
Be
careful
not
to
damage
radia
tor
fins
and
core
tube
when
in
stalling
INSPECTION
Radiator
cap
should
be
checked
for
working
pressure
at
regular
tune
up
intervals
First
check
rubber
seal
on
cap
for
tears
cracks
or
deterioration
Cooling
System
after
cleaning
it
Then
install
radiator
cap
on
a
tester
If
cap
does
not
hold
or
will
not
release
at
the
specified
pres
sure
replace
cap
Fig
CO
9
Telting
radiator
cap
Also
inspect
radiator
for
leakage
using
cap
tester
and
applying
a
pres
sure
of
1
6
kg
cm
22
8
psi
If
a
leakage
is
detected
repair
or
replace
radiator
Fig
CO
IO
Testing
cooling
6ystem
pUS
ure
SERVICE
DATA
AND
SPECIFICATIONS
Thermostat
Valve
opening
temperature
oC
F
Maximum
valve
lift
mm
oC
inj
F
Radia
tor
Type
Manual
transmission
Automatic
transmission
Cap
relief
pressure
Cooling
system
Leakage
testing
pressure
Capacity
Manual
transmission
Automatic
transmission
Fan
Number
of
blades
x
outer
diameter
Without
air
conditioner
mm
in
With
air
conditioner
mm
in
kg
em
psi
kg
em
psi
liters
US
qt
Imp
qt
liters
US
qt
Imp
qt
CO
6
Temperate
Frigid
type
Tropical
type
type
80
5
to
83
5
86
5
to
89
5
75
to
78
177
to
183
187
to
193
167
to
172
8
95
8
100
8
90
0
31
203
0
31
212
0
31
194
Corrugated
fin
type
Corrugated
fin
type
equipped
with
oil
cooler
0
9
1
3
1
6
22
8
with
heater
8
0
8
Ii
7
7
8
8
Y
6
J
i
without
heater
74
7J
i6
1i
7
2
7
X
6
X
7
x
380
15
8
x
380
15
Page 110 of 537
Engine
Fuel
CARBURETOR
CONTENTS
DESCRIPTION
EF
14
CHOKE
UNLOADER
EF
23
STRUCTURE
AND
OPERATION
EF
14
ELECTRIC
AUTOMATIC
CHOKE
EF
24
PRIMARY
SYSTEM
EF
15
INTERLOCK
OPENING
OF
PRIMARY
AND
SECONDARY
SYSTEM
EF
16
SECONDARY
THROTTLE
VALVE
EF
24
ANTI
DIESELING
SYSTEM
EF
17
DASH
POT
EF
25
FLOAT
SYSTEM
EF
18
ACCELERATING
PUMP
EF
25
BOOST
CONTROLLED
DECELERATION
ANTI
DIESELING
SOLENOID
VALVE
EF
25
DEVICE
B
C
D
D
EF
1B
B
C
D
D
CIRCUIT
WITH
FUNCTION
ELECTRIC
AUTOMATIC
CHOKE
EF
20
TEST
CONNECTOR
EF
25
DASH
POT
SYSTEM
EF
20
ALTITUDE
COMPENSATOR
ALTITUDE
COMPENSATOR
California
modelsl
EF
29
California
models
EF
20
MAJOR
SERVICE
OPERATION
EF
29
ADJUSTMENT
AND
INSPECTION
EF
21
REMOVAL
EF
29
CARBURETOR
IDLE
RPM
AND
DISASSEMBLY
AND
ASSEMBLY
EF
30
MIXTURE
RATIO
EF
21
CLEANING
AND
INSPECTION
EF
34
FUEL
LEVEL
EF
22
SERVICE
DATA
AND
SPECIFICATIONS
EF
35
FAST
IDLE
EF
22
TROU8LE
DIAGNOSES
AND
VACUUM
BREAK
EF
23
CORRECTIONS
EF
36
DESCRIPTION
The
carburetors
are
of
down
draft
two
barrel
types
which
produce
the
optimum
air
fuel
mixture
under
all
operating
conditions
They
present
several
distinct
features
of
importance
to
the
vehicle
owners
A
summary
of
the
features
is
as
follows
1
A
slow
economizer
to
make
a
smooth
connection
with
acceleration
or
deceleration
during
light
load
run
ning
It
also
assures
stable
low
speed
performance
2
An
idle
limiter
to
reduce
harmful
exhaust
emissions
to
a
minimum
3
A
B
C
D
D
device
for
reducing
hydrocarbon
H
C
emissions
4
An
electric
automatic
choke
to
facilitate
cold
starting
and
to
reduce
exhaust
emissions
5
An
anti
dieseling
solenoid
to
eliminate
dieseling
run
on
6
A
power
valve
or
vacuum
actu
ated
booster
to
ensure
smooth
high
speed
operation
7
The
carburetor
comes
equipped
with
dash
pot
which
ensures
smooth
deceleration
without
engine
stall
under
all
operating
conditions
8
The
hand
operated
altitude
com
pensator
is
installed
in
the
California
models
EF
14
STRUCTURE
AND
OPERATION
These
carburetors
consist
of
a
primary
system
for
normal
running
and
a
secondary
system
for
full
load
running
A
float
system
common
to
both
primary
and
secondary
systems
a
se
condary
switch
over
mechanism
an
accelerating
mechanism
etc
are
also
attached
An
anti
dieseling
solenoid
valve
and
a
power
valve
mechanism
are
also
installed
The
hand
operated
altitude
com
pensator
corrects
air
fuel
mixture
to
an
optimum
ratio