SEUTION 0
THE
COOLING SYSTEM
General
Description.
Section No. 0.1 Draining and filling
the
cooling system.
Section No. D.2 To
remove
the
radiator.
Section No. 0.3 Fan belt
adjustment.
Section No.
0.4
The
water
pump---to dismantle and reassemble.
GENERAL DESCRIPTION
Seetion
D.l
D
The
cooling syseem is
of
the
thermo-siphon.
impeller-assisted ty pe,
with
the
rmostatic
control.
The
water
is circulated from
the
base of
the
radiator
by
the
pump, and
after
passing round
the
cylinders
and cylinder
head
it
reaches
the header tank via
the
thermostat
and
top
water
hose. From
the
header
tank it passes
downwards
through
the
cooling ducts
to
the
radiator
base
tank.
Air is drawn
through
the
radiator by a fan which is
mounted
on
the
water
pump spindle. and
both
are
driven
by a
belt
from
the
crankshaft. which also drives
the
dynamo. Later models are fitted with a combined
water
temperature
and oil
pressure
gauge.
DRAINING
AND
FILLING THE
COOLING
SYSTEM
Remove
the
header
tank
filler cap.
Drain
the
water
from
the
cooling system by means
of
the
drain
tap
on
the
left-hand side of
the
radiator
bottom
tank
and
the
tap
on
the
right
of
the
engine
at
the
front
of
the
cylinder block. The system
cannot
be
Fig. D.2.
A drain tap which must be
opened
to
drain the cylinder
water
jacket completely Is fitted
to
tile rIght-hand side
ofthe
eyllnder block
fully drained from
the
radiator
tap
alone owing
to
the
locatio n of t he
water
impel ler in
the
clrcu Iatl ng system.
If
"Bluecol
"
or
any
other
anti-freeze
mixture
is
in
use
the
water
should be drained into a suitable
dean
container
and
kept
for
future
use.
D.I
Wishvilles Classic
Automobile Library
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