COOLING SYSTEM
Radiator
The system is pressurized to
10
Ib./sq. in.
(.7
kg./cm." when hot, and the pressure
filler cap
must be released gradually when the filler cap is removed. It is advisable to
(1
)
protect the hands against escaping steam and turn the cap slowly anti-clockwise
until the resistance of the safety stops is felt. Leave the cap in this position until
all pressure is released. Press the cap downwards against the spring to clear the
safety stops, and continue turning until it can be lifted off.
Draining the
To drain the cooling system on cars not fitted with drain taps or plugs, slacken
cooling
the hose clip and remove the bottom hose at its connection to the radiator.
A
system
drain plug is provided on the engine cylinder block.
On early cars the radiator is provided with a drain tap
(2)
and the engine with
a drain plug
(3)
or tap
(4)
on the right-hand side of the cylinder block.
When draining in freezing weather, do so when the engine is hot. Run the engine
slowly for one minute when the water has ceased flowing to clear any water
from the pump and other places where it might collect. Finally, leave a reminder
on the vehicle to the effect that the cooling system has been drained.
Collect the coolant in a clean container if it is to be used again, as cars are filled
with a
333
per cent solution of anti-freeze before they leave the factory.
Filling the
'To avoid wastage by overflow add just sufficient coolant to cover the bottom
cooling
of the header tank. Run the enrvnc
uqtil
it is hot and add sufficient coolant to
system
bring the surface to the level ot
thi
~dicator positioned inside the header tank
below the filler neck.
NOTE.-If
a heater
is
fitted ensure that the heater control
is
set to
'HOT'
when
draining or filling the system.
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