Datsun 1600 - THERMOSTAT REMOVAL AND INSTALLATION

or
foreign
matter
that
may
have
accumulated on the
front
sIde
of the core
3
With
the
aid of a
hght
make
a
ViSUal check down
through
the radiator filler neck onto the
radiator
tubes
If It
IS
apparent
that the tubes
are
severely
unpregnated
With
flakes of rust
It
will be
necessary
to have the
upper
and
lower radiator
tanks
un
sweated from the radIator
core and
the tubes
thoroughly
cleaned It IS
recommended that this
operahon
be carned out
by
a
radiator
speclahst
who has the
necessary
speclallsed equipment
to
carry
out
tlus
type
of
work
TO
INSTAL
1
PositIOn
the
radiator
assembly
m
the front
panel
opemng
and mstal and
l1ghten
the four
secunng
boits
2
Connect the
upper
dIld lower
radIator hoses
between
the
radiator and
the
engme
Use
a
hght
smear of
grease
between the
hoses
and
pIpes
Cooling System
2
NOTE
Inspect
all
hoses
before
mstallmg
for crackmg
or
penshmg
and
renew
any hose that
upon mspectlOn
proves
to
be unservIceable
3 On vehicles fitted
With automatIc transrmsslOn
connect
up
the
torque
converter
cooling pipes
at the lower
radiator tank
4
Close the radiator dram
tap
and mstal
the dram
plug
at the
cylinder
block Fill the
system
with clean water
and
mstal the
pressure
cap
5
Start the
engme
and check
that
the
water level
m
the radiator IS
wlthm
approximately
12 7
mm 050
m of
the bottom ofthe filler neck
NOTE Use
care to
aVOid
the rISk
of
scaldmg
If
the
engme
IS
at
operatmg
temperature
remove the
radiator
cap slowly
to allow
pressure to
escape
before removmg
the
cap
6 With
the
engme
temperature
thoroughly
transmiSSiOn
flUId leaks
runmng
and at
operatmg
check for
water
and or
1
TH
K nSTAT
TO REMOVE AND
INSTAL
1
Remove the
radiator
or
pressure cap
and
dram the
water from
the
coolmg system
Via the
tap
on the
lower
radiator tank
2
Disconnect and
remove the
top
radiator hose
3
Remove the two bolts
secunng
the
water
outlet
elbow to the thermostat
housmg
4
Detach the
water outlet elbow
and
gasket
and
Withdraw the thermostat
assembly
from the
recess m
the
thermostat
housmg
5
If the thermostat
housmg
or
gasket reqUIre
removal
disconnect the wife
from the heat sender umt and
remove the thermostat
housmg
to
cyhnder
head
securmg
bolts Withdraw
the
housmg
and
gasket
from the
cylinder
head
NOTE A visual
exammaflon
of
the
thermostat Will
often
determme Its
servzceablltty
and
obViate the
necessity for
further
testIng
For mstance a thermostat with
ItS
valve
open
when
removed
from
a cold
engme
IS
obvIOUSly faulty
and should
be
discarded
and
a
new umt
fitted
InstallatIOn
IS
a
reversal of
the
remoyal
procedure
Ensure that
new
gaskets
are fitted when
assemblmg
F1l1 the
coolmg
system
With
clean water to
approxunately
127 mm 050 m below
the radiator ruler
neck
and check for water leaks
CLIP
t
e
lfj
THERMOSTAT
HOlJSING
t
HEAT SENDER UNIT
SLEEVE
Exploded
VIew of
Thermostat Housmg Assembly
41
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