Toyota 3S-GE Repair Manual page 337

_ ENGINE - COOLING SYSTEM EG'323
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W' 4. REMOVE WATER INLET AND THERMOSTAT
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\i i ; .- / 3. DISCONNECT RADIATOR HOSE FROM WATER
I /\ INLET
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ID (a) Remove the 2 nuts, water inlet and thermostat.
(b) Remove the gasket from the thermostat.
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THERMOSTAT INSPECTION
INSPECT THERMOSTAT
HINT: The thermostat is numbered with the valve
opening temperature.
(a) Immerse the thermostat in water and gradually heat
the water.
(b) Check the valve opening temperature.
' _ _ _ _ __m _' _: __ Valve opening temperature:
3_ {5 7}? 80 — 84°C (176 —183°F)
If the valve opening temperature is not as specified,
__ replace the thermostat.
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(c) Check the valve lift.
T Valve lift:
10 mm (0.39 in.) or more at 95°C (203° F)
E: stat.
If the valve lift is not as specified, replace the thermo-
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=2 (d) Check that the valve spring is tight when the thermo—
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1-_¢a_ I stat is fully closed.
i Valve Lift If not closed, replace the thermostat.
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