1993 CHEVROLET S10 radiator

Downloaded from www.Manualslib.com manuals search engine When you decide it's safe to lift the hood, here's what you'll see:
A. Coolant recovery tank
B. Radiator pressure cap
C. Engine fan
If the coolant inside the coolant recovery tank is boiling, don't do anything
else until it cools down.
The coolant level should be at or above the
ADD mark. If it isn't, you may
have a leak in the radiator hoses, heater hoses, radiator or water pump or
somewhere else in the cooling system.
CAUTION I
Heater and radiator hoses, and other engine parts, can be very\
hot.
Don't touch them.
If you do, you can be burned.
loose all coolant. That could cause an engine fire, and you could be
burned. Get any leak fixed before you drive the vehicle. run the engine
if there is a leak. If you run the engine, it could
NOTICF
If there seems
to be no leak, start the engine again to see if the fan runs
when the engine does.
If it doesn't, your vehicle needs service. Turn off the
engine.
5-1 1

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant Recovery Tank
If you haven’t found a problem yet, but the coolant level isn’t at or above the
ADD mark, add a 50/50 mixture of clean water (preferably distilled) and the
proper antifreeze at the coolant recovery tank. (See “Engine\
Coolant” in the Index for more information about the proper coolant mix.)
I CAUTION
4
Adding only plain water to your cooling system can be dangerous.
Rain water,
or some other liquid, like alcohill, can boil before the
proper coolant mix
will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water, or the wrong mix, your
engine could get
too hot but you wouldn’t get the overheat warning.
Your engine could catch fire and you or others could be burned. Use
‘a 5Q/M mix of clean wafer and a proper antifreeze.
NOTICE
In cold weather, water can freeze and crack the en1
core and other
parts. Use the recommended coolan
*
I CAUTION
I I
You can be burned if you spill coolant on hot engine parts. Coolant
b contains ethylene glycol and it wil’l burn if the engine parts are hot
I’ enough. Don’t spill coolant on a hot engine.
When the coolant in the coolant recovery tank is at or above \
the
ADD mark,
start your vehicle.
If the overheat warning continues, there’s one more thing you c\
an try. You
can add the proper coolant mix directly to the radiator, but \
be sure the
cooling system
is cool before you do it.
A
Steam and scalding liquids from a hot cooling system can blow out
and burn you badly. They are under pressure, and if you turn the
radiator pressure cap-even a little-they can come out at high
speed. Never turn the pressure cap when the cooling system, including the radiator pressure cap, is hot. Wait for the cooling
system and radiator pressure cap
to cool if you ever have to turn
the pressure cap.
5-1 2

Downloaded from www.Manualslib.com manuals search engine KO71 7
How to Add Coolant to the Radiator
1. You can remove the radiator pressure cap when the cooling system,
including the radiator -pressure cap and upper radiator hose,
is no longer
hot. Turn the pressure cap slowly to the left until
it first stops. (Don’t
press down while turning the pressure cap).
If you hear a “hiss,” wait for
that to stop.
A “hiss’’ means there is still some pressure left.
I
KO7
2. Then keep turning the pressure cap, but now push down as you \
turn it.
Remove the pressure cap.
5-1 3

Downloaded from www.Manualslib.com manuals search engine Pmb/ems on the Road
c
KO719
3. Fill the radiator with the proper mix, up to the base of the filler neck.
4. Then fill the coolant recovery tank to the ADD mark.
5. Put the cap back on the coolant recovery tank, but leave the radi\
ator
pressure cap
off.
KO720
6. Start the engine and let it run until you can feel the upper radiator hose
7. By this time, the coolant level inside the radiator filler neck m\
ay be
getting hot. Watch out for the engine fan.
lower.
If the level is lower, add more of the proper mix through the filler
neck until the level reaches the base
of the filler neck.
5-1 4

Downloaded from www.Manualslib.com manuals search engine t
..-
.I
Service & Appearance Care
What to Use:
Use a mixture of clean water (preferably distilled) and antifreeze that meets
“GM Specification 6038-M,” which won’t damage aluminum parts. Also use
GM Engine Coolant Supplement (sealer) with
a complete coolant change. If
you use these, you don’t need to add anything else.
I
Adding only plain water to your cooling system can be dangerous.
proper coolant mix will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water or the wrong mix, your
engine could get
too hot but you wouldn’t get the overheat warning.
Your engine could catch fire and you or others could be burned. Use
- Plain water, or some other liquid like alcohol, can boil before the
II a 50/50 mix of clean water and a proper antifreeze.
NOTICE
J use an improper coolant mix, your engine could overheat and be
badly damaged. The repair cost wouldn’t be covered by your warrant\
y
much water
in the mix can freeze and crack the engine, radiator, hea
core and other
part
Some conditions, such as air trapped in the cooling system, can affect the
coolant level in the radiator. Check the coolant level when th\
e engine is cold
and follow the steps under “Adding Coolant” for the prope\
r way to add
coolant.
If you have to add coolant more than four times a year, have your dealer
check your cooling system.
’‘ you use the proper coolant, you don’t have to add extra inhibitors c-
auditives which claim to improve the system. These can be harmful. ~ ~~~~~
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Downloaded from www.Manualslib.com manuals search engine Adding Coolant
KO625
To Check Coolant: When your engine is cold, the coolant level should be at
ADD, or a little higher. When your engine is warm, the level should be up to
FULL HOT, or a little higher.
To Add Coolant: If you need more coolant, add the proper mix at the
coolant recovery tank.
A
Turning the radiator pressure cap when the engine and radiator \
are
hot can allow steam and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will almost never have to
add coolant at the radiator. Never turn the radiator pressure
cap-even a little-when the engine and radiator are hot.
Add coolant mix at the recovery tank, but be careful not to spill\
it.
A
You can be burned if you spill coolant on hot engine parts. Coolant
contains ethylene glycol, and it will burn
if the engine parts are hot
enough. Don’t spill coolant on a hot engine.
6-25

Downloaded from www.Manualslib.com manuals search engine Service & Appearance Care
Radiator Pressure Cap
KO721
When you replace your radiator pressure cap, an AC@ cap is recommended.
See “Service Replacement Part and Filter Recommendations” in the Index.
Thermostat
Engine coolant temperature is controlled by a thermostat in the engine coolant
system. The thermostat stops the
flow of coolant through the radiator until the
coolant reaches a preset. temperature.
When you replace your thermostat, an
AC@ thermostat is recommended.
6-26

Downloaded from www.Manualslib.com manuals search engine Scheduled Maintenance Services
Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to use are listed in this se\
ction. Make sure whoever services your vehicle uses these. All parts should be \
replaced and all necessary repairs done before you or anyone else drives th\
e vehicle.
1. ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SG OR SG/CE QUALITY, ENERGY CONSERVING
II OILS OF THE PROPER
VISCOSITY. To determine the preferred viscosity oil for your vehicle’s
engine (e.g. SAE 5W-30). See “Engine Oil” in the Index.\

2. CHASSIS LUBRICATION -Lubricate the front suspension, ball joint,
steering linkage, clutch, and transfer case shift linkage, parki\
ng brake
cable guides, propshaft splines, universal joints, brake pedal s\
prings, and
clutch pedal springs at the intervals specified on the proper \
maintenance
schedule, or at every engine oil change, whichever comes first.\
On
vehicles without hydraulic clutches, lubricate the clutch cross \
shaft every
30,000 miles
(50 000 km).
Ball joints should not be lubricated unless their temperature i\
s 10°F
(-12°C) or higher. When the weather is cold, let them war\
m up before
lubricating them or they could be damaged.
Also, be sure to check all the vehicle fluid levels at this \
time.
3. CLUTCH FORK BALL STUD LUBRICATION (4.3L ENGINES ONLY)
-Lubricate the clutch fork ball stud through the fitting on th\
e clutch housing. Lubricant must be added “sparingly” to the fittin\
g, as only
.0066
Ib. (.003 kg) is required to lubricate the ball stud surface\
. Do not add
lubricant more often than the intervals recommended in the Main\
tenance
Schedules. Too much lubricant
will damage the clutch assembly.
4. COOLING SYSTEM SERVICE* -Drain, flush and refill the system wit\
h
new coolant. See “Engine Coolant’’ in the Index for th\
e proper coolant
and mixture to use in your vehicle.
Also inspect the hoses and replace them
if they are cracked, swollen, or
deteriorated. Tighten all hose clamps. Clean the outside of the radiator
and air conditioning condenser. Wash the radiator neck. To ensure proper
operation, pressure test the radiator and cap.
* An Emission Control Service
7-8