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CLEANING THE COOLING SYSTEM
Unl~
water
in
the cooling system
is
treated with a corro-
sion preventative, rust and scale
may
eventually
clog
water
passages in
the
radiator and water
jackets.
This
rust
accumu-
lation
will
result
in
inefficient
operation
of
the
cooling sys-
tem,
vitally affecting engine
performance
and economy of
operation. Two common causes of corrosion are:
I.
Air Suction-Air
may
be
drawn into
the system
due to
low liquid level in the radiator, leaky water pump,
or
loose hose
connection.
2.
Exhaust Gas Leakage-exhaust gas may
be blown
into
the cooling
system
past the cylinder head
gasket
or
through
cracks
in the
cylinder
head and block.
Scale and
deposits in the
cooling
"}'Stem which will not
nush
out can generally be
removed by using
a good
coal-
ing
system
cleaning compound. When using a cleaning
compound
in the cooling
system
it is
advisable
to follow
the instructions furnished with the particular brand of
compound.
Ir
cooling
system cleaning
compound
will not thoroughly
clean the system,
it
is
advisable
[0
reverse-flush the
system.
See your Chevrolet dealer regarding reverse-flushing
or
your Corvette cooling system
.
•
50
TESTING THE
ANTI-FREEZE
A
hydrometer
lest
is used
to
indicate
whether anLi.freczc
J
or water or both should be added to bring the solution to
the proper
level
and to maintain the desired freezing
point.
Some devices
used for
teSling
a.nti~freezing
solutions will
indicate
the correct
freezing point
only when the test
is
made
at
a
specific
temperature.
Other
testers
provided
with
thermometers
and
tables,
indicate the freezing points corre-
sponding to
rcadings
made at various temperatures.
Dis-
regarding the temperature
of
the
solution when
tCSted
may
cause
an error as
large
as 30° F.
Some testing devices
arc made
to test
only onc kind of anti·
freezing
solution. Others have several scales and may
be
used for the corresponding kinds
or anti-freeze.
ELECTRICAL SYSTEM
The electrical
system
consists or the following units-gen-
eralor,
combined voltage and
current regulator, starting
mOlor, storage battery, distributor, ignition
lock,
ignition
coil, ammeter, gasolinc gauge,
hom,
accessories,
lamps,
switches, wiring
and
miscellaneous
parts.
The electrical
system utilizes metal shields, coaxial condensers, shielded
wiring, nOD-metallic
high
tension cables, and shielded neu·
lral
safclY switch at the transmission, to prevent radiation
of radio
rrequency
interference
[rom
the plastic body.
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