Thermostat - Toyota 4A-FE Repair Manual

4A-FE (Type A)
COOLING SYSTEM - Thermostat
C0-13
Water Inlet
C00862
C0049l
--------.- 8
mm
t
C00032
THERMOSTAT
REMOVAL OF THERMOSTAT
1. DRAIN ENGINE COOLANT (See page C0-5)
2. REMOVE WATER INLET AND THERMOSTAT
(a} Remove the two nuts (4A-FE) or two bolts (4A-GE)
and water inlet from the water inlet housing.
(b) Remove the thermostat.
(c)
Remove the gasket from the 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:
80 - 84°C (176 - 183°F)
If the valve opening temperature is not as specified,
rep-
lace the thermostat.
(c) Check the valve lift.
Valve lift: 8 mm (0.31 in.) or more at 96°C (203°F)
If the valve lift is less than specification, replace the ther-
mostat.
INSTALLATION OF THERMOSTAT
1. PLACE THERMOSTAT IN WATER PUMP
(a) Install a new gasket to the thermostat.
(b) (4A-FE
Type A)
Set the jiggle valve of the thermostat in angle posi-
tion, and insert the thermostat in the water inlet,
housing.
HINT: The jiggle valve may be set within 10° of eigther
cooass
side of the presribed position.
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