CO-10
COOLING SYSTEM - Thermostat
THERMOSTAT
REMOVAL OF THERMOSTAT
1. DRAIN ENGINE COOLANT (See page CO-5)
2. REMOVE WATER INLET
Remove the three bolts and water inlet from the water inlet
housing.
3. REMOVE THERMOSTAT
INSPECTION OF THERMOSTAT
INSPECT THERMOSTAT
HINT: The thermostat is numbered with the valve open-
ing temperature.
(a) Immerse the thermostat in water and gradually heat
the water.
(b) Check the valve opening temperature.
Valve opening temperature: 74-78X (165-172°F)
If the valve opening temperature is not as specified, replace
the thermostat.
(c) Check the valve lift.
Valve lift: 10 mm (0.39 in.) or more at 90°C (194°F)
If the valve lift is not as specified, replace the thermostat.
(d) Check that the valve spring is tight when the thermo-
stat is fully closed.
If necessary, replace the thermostat.
CO0948
C00941
CO0929
Valve Lift
CO0949
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