coolant temperature CHEVROLET VEGA 1976 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine especially useful when driving on
dark roads since they provide ex­
cellent long range illumination. The
headlight beam indicator will be on
whenever the high beams or
"brights" are in use. The Headlight
Beam
Switch controls the headlight
beams (see Page
2-12).
Light Switch
The three position light switch
controls the headlights, taillights,
parking lights, side marker lights,
instrument lights and dome lights
as shown. The headlamp circuit
is protected by a circuit breaker in
the light switch.
An overload on
the breaker will cause the lamps to
"flicker" on and off. If this condi­
tion develops, have your headlamp
wiring checked immediately.
Clock
Reset the clock, if your car is so
equipped, by pulling out the knob
and turning the hands clockwise if
1
1
1
slow, counterclockwise if fast. This
will,
if the clock error is five min­
utes
or more, automatically com­
pensate for time gain or lag. Several
resettings, several days apart, may
be needed to properly adjust the
clock mechanism. Have your clock
cleaned and oiled by a competent
clock serviceman at least every two
years.
2-17
Cigarette Lighter
The cigarette lighter is located
on the instrument panel
face. To
operate . push it in. When it be­
comes
Heated, it automatically pops
out ready for use.
Optional Instruments and
Gauges
Tachometer
The optional Tachometer indi­
cates the speed of the engine in
revolutions
per minute.
Engine Temperature Gauge
This optional gauge indicates
coolant temperature which will vary
with air temperature and operat­
ing conditions.
The ignition switch
must be on for accurate readings.
Hard driving
or prolonged idling in
very hot weather will cause the
pointer to move beyond the center
of the band. Should pointer move
to the line at the right end of the
band, stop engine or reduce speed
to permit engine to cool.

Downloaded from www.Manualslib.com manuals search engine ENGINE COOLING
SYSTEM
The recovery type cooling sys­
tem 'is standard on all Chevrolet
passenger cars. The coolant ex­
pands with rising temperature and
the overflow
is collected in the
recovery tank. When the system
temperature drops, the coolant
is
drawn back into the radiator. The
cooling system has been filled at
the factory with a high -quality, in­
hibited ,
year-around coolant that
meets the standards of General
Motor s Specification 1899-M. This
coolant solution provides freezing
protection to
-20oP (- 28 °C),
and in Canada to -35°P
(-37°C), and it has been formu­
lated to be used without replace­
ment for two years
or 30,000 miles.
After two years or
30,000 miles,
the coolant should be drained to
prevent rust
or corrosion in the
radiator and engine.
Cooling System Care
Do not remove radiator cap to
check coolant level, but check visu­
ally in the
"see thru" coolant re­
covery tank at
least as frequently
as needed. Level should be at the
"full cold" mark on the recovery
tank when the system
is cold and
at the
"full hot" mark at normal
operating temperature.
Add a 50/
50
mixture of high-quality ethylene
glycol antifreeze and water for
coolant additions.
If frequent addi­
tions are required, see
your' dealer
for a cooling system check.
NOTE: If recommended quality
antifreeze
is used, supplemental in­
hibitors or additives claiming to
provide increased capability are not
necessary. They may be detrimen­
tal to the efficient operation of the
system, and represent an unneces­
sary operating expense.
5-7
The cooling system should be
serviced every year as follows:
1. Wash radiator cap and filler neck
with clean water.
2. Check coolant for proper level
and freeze protection.
3 . Test system and radiator cap for
proper pressure holding capacity
(15 psi). If required, use cap
designed by
AC for coolant re­
covery systems, and specified for
your model.
4. Tighten hose clamps and inspect
all hoses. Replace hoses if swol­
len, checked or otherwise deteri­
orated.
5 . Clean frontal area of radiator
core and air conditioning con­
denser.

Downloaded from www.Manualslib.com manuals search engine protection at -20o
P (-28°C) or
below to ensure protection against
corrosion
and · loss of coolant
from boiling even though freezing
temperatures are not expected.
• Add ethylene glycol base coolant
that meets
GM Specification
1899-M when coolant additions
are required because of coolant
loss
or to provide additional pro­
tection against freezing at tem­
peratures lower than -20oP
(-28°C), and in Canada to
-35°P (-37°C).
NOTE: Alcohol or methanol base
coolants or plain water are not
recommended for your vehicle at
any time.
Your vehicle, if equipped with
standard 4-cylinder engine, has
an aluminum cylinder block.
When adding anti-freeze, rust
inhibitors, or cleaners, make
certain they are safe for
use
with aluminum components.
Radiator Pressure Cap
The radiator cap, a 15 lb. pres­
sure type, must be installed tightly,
otherwise coolant may be lost and
damage
t6 engine may result from
overheating. Radiator pressure caps
should be checked periodically for
proper operation.
If replacement is
required specify AC.
Thermostat
The cooling system is protected
and controlled by a thermostat that
maintains a satisfactory engine
operating temperature. This
ther­
mostat is installed in the engine
coolant outlet and
is designed for
continuous use through both winter
and summer. When replacement
is
necessary, Delco parts are recom­
mended.
5-9
CHASSIS ITEMS
Rear Axle Lubricant
Standard -Every 6 months or
7,500 miles, whichever occurs first,
check lubricant level and add
lubri­
cant, if necessary, to fill to level of
filler plug hole.
Use SAE 80W or
SAE80W-90GL-5 Gear Lubricant.
cant.
(Por vehicles operated in
Canada, use
SAE 80W Gear Lubri­
cant.)
Positraction -Drain aJ,ld refill
after the first 15,000 miles then
maintain same
as standard axle but
use only the special positraction lu­
bricant available from your Chev­
rolet Dealer, part number 1051022.