Datsun 1000 - COOLING SYSTEM; SPECIFICATIONS; DESCRIPTION; RADIATOR

1
COOLING
SYSTEM
SPIlCIFICATIONS
Water
pump
Type
Centrifugal
impeller
Double
row
ball
bearing
and
shaft
assembly
Bearing rype
Impeller
to
body
clearance
0
5mm
0 019 in
Thermostat
Type
Opening
temperature
Wax
pellet
82
deg
C
180 deg
F
8
mm @ 95
deg
C
0 315 in
@
203
deg
F
Maximum valve lift
Radiator
cap
Type
Working pressure
Pressure
0 9
kg
cm2
12
8
psi
Corrugated
fin
Radiator
type
Cooling
system
capacity
With
heater
4
9
litre
9
Imp pt
10
5 US
pt
4
2 litre
7
Imp
pI
9 US
pt
10
15
nun
0 394
0 590
in
Without heater
Fan belt deflection
1
DESCH ON
The
cooling
system
is
the
thermo
syphon
type
with fan
and
water
pump
assistance
Two
dra
ning poin
ts are
incorporated
in
the
system
one at
the lower
radiator tank
and
the other at
the left
hand side
of
the
engine assembly
The
system
is
also
pressurised
in order
to
raise
the
boiling point
of the coolant
within the
system
and
so
increase the
efficiency
of the
engine
NOTE
To
avoid accidental
scalding
use caution when
releasing
the radiator
cap of
an
engine
that is at nonnal
operating temperature
The
fan belt and
water
pump
are driven
by
a V belt
from
the crankshaft
pulley
This belt
also
drives the
alternator
The water
pump
is
fitted
with
a shaft and
ball
bearing
assembly
which is
pre
lubricated and
requires
no further
lubrication
in
service
The water
pump
seal is a
spring
loaded carbon thrust
washer and rubber bellows
assembly
Temperature
within the
cooling
system
is
controlled
by
a thermostat located in the
cylinder
head water
outlet
pipe
housing
A
by
pass
is
incorporated
in the
system
to allow limited
circulation of
the
coolant
when the
thermostat
is
closed
2 RADIATOR
TO
REMOVE
I Remove
the radiator
cap
and drain the
cooling
system
via the
tap
on the lower
radiator
tank
2 Disconnect
and remove the
upper
and
lower
radiator hoses
3
On vehicles with automatic
transmission dis
connect
the
torque
converter
cooling
pipes
if fitted at
the lower
radiator
tank
plug
the
pipes
and
unions
to
prevent entry
of dirt
4 Unscrew
the
fixing
bolts and remove the radiator
grille
5
Remove the four radiator
retaining
bolts and lift
out
the
radiator
NOTE
When a
radiator that has been
in use
for
some
time
is removed
from
the vehicle to
enable
repairs
to
be carried
out to the
engine
it should not
be
alloweq
to stand
empty
for
any
length of
time The radiator
should be immersed in
a
tank
of
water or
otherwise
kept fUll
Failure
to observe
this
precaution
may
result in
overheating
when the
engine
is
put
back into sef1Jice
This
is caused
by
internal
deposits
in
the radiator
drying
and
flaking and so
obstmcting
the
circulation
of
the coolant in
the
system
6
Securely
plug
the water
outlets in the
upper
and
lower
r adiatof
tanks and fill the
radiator
assembly
with
clean
water
TO CHECK
1
With
the
radiator removed
from the
vehicle turn
it
upside
down
and
apply
a hose to
the lower tank
outlet and
reverse flush the unit
2 Stand
the
radiator
upright
and
using
a
jet
of water
or air
pressure
to the rear side of the core remove
any
dirt
28
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