4-- 2
62--11362
FULL
LOW
2. Ifthecoolant level istoolow,check thereason forthe
lost coolant.
a. If coolant loss is due to evaporation, add only clean
soft water.
b. If coolant loss is due to a leak, repair the leak, then
add a coolant mixture of the same type and specifi-
cationthat isin the system. If thecoolant brandcan-
not be identified, drain out all of the remaining cool-
ant and refill with a totally new mix.
NOTE
Whenaddingcoolant tothesystem,airmustbe
ventedfromtheenginecoolantpassagesbyjig-
gling the upper and lower radiator hoses.
Besureto closetheradiatorcapsecurely. Ifthe
cap is loose or improperly closed, coolant may
leak out and the engine could overheat.
Do not use an antifreeze and scale inhibitor at
thesametime.
Nevermix differenttypes or brandsofcoolants.
4.1.4 Radiator Cap
1. Attach the radiator cap to a pressure tester .
2. Apply pressureand observethetimeforthe pressure
to fall.
3. Ifthemeasurement is lessthan the factory specifica-
tion, replace the cap.
Pressure Falling
Time
Factory
Specification
More than 10 seconds
for pressure fall fro m
88 to to 59kPa
0.9 to 0.6 kgf/cm
2
13to9psi
4.1.5 Radiator
1. Fill the radiator with water.
2. Attach the pressure tester to the radiator.
3. Apply pressure and look for leaks.
4. Repair/replaceasnecessarytoassurethat thespeci-
fied pressure will hold.
Radiator Leakage
Test
Factory
Specification
157 kPa
1.6 kgf/cm
2
23 psi
4.1.6 Thermostat Opening Temperature
1. Suspend the thermostat in water by a string withone
end of the string inserted between the valve and its
seat.
2. Immerse the thermostat in water and raise the tem-
perature of the water gradually.
3. With a thermometer, read the temperature of the
water when the valve opens and leaves the string.
4. Continue heating the water, read the temperature of
the water when the valve has opened approximately
6mm (0.236 in).
5. Ifthemeasurementis not withinthefactoryspecifica-
tions, replace the thermostat.
Thermostat
Opening
Temperature
Factory
Specification
80.5 to 83.5.5°C
176.9 to 182.3
°F
Thermostat
Full Open
Temperature
Factory
Specification
95°C
203
°F
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