Thermostat: Service and Repair
THERMOSTATCOMPONENTS (Part 1):
COMPONENTS (Part 2):
REMOVAL
1. REMOVE ENGINE UNDER COVER RH
2. DRAIN ENGINE COOLANT
3. REMOVE FAN AND GENERATOR V BELT
4. REMOVE GENERATOR ASSEMBLY
5. REMOVE WATER INLET
(a) Remove the 2 nuts, then remove the water inlet.
6. REMOVE THERMOSTAT
INSPECTION
1. INSPECT THERMOSTAT
(a) The valve opening temperature is inscribed on the thermostat.
(b) Immerse the thermostat in water, then gradually heat the water.
(c) Check the valve opening temperature of the thermostat.
Valve opening temperature: 80 to 84°C (176 to 183°F)
If the valve opening temperature is not as specified, replace the thermostat.
(d) Check the valve lift.
Valve lift: 10 mm (0.39 in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
(e) Check that the valve is fully closed when the thermostat is at low temperatures (below 77°C (171°F)).
If not fully closed, replace the thermostat.
INSTALLATION
1. INSTALL THERMOSTAT
(a) Install a new gasket onto the thermostat.
(b) Install the thermostat with the jiggle valve upward.
HINT: The jiggle valve may be set within 10° of either side of the prescribed position.
2. INSTALL WATER INLET
(a) Install the water inlet with the 2 nuts.
Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf)
3. INSTALL GENERATOR ASSEMBLY
4. ADD ENGINE COOLANT
5. INSPECT FOR COOLANT LEAK
6. INSTALL ENGINE UNDER COVER RH