Thermostat: Service and Repair

THERMOSTAT

COMPONENTS:

REMOVAL
1. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH
2. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH
3. REMOVE ENGINE UNDER COVER LH
4. REMOVE ENGINE UNDER COVER RH
5. DRAIN ENGINE COOLANT
6. DISCONNECT RADIATOR HOSE OUTLET





7. REMOVE WATER INLET
(a) Remove the 2 nuts and disconnect the water inlet from the cylinder block.
8. REMOVE THERMOSTAT
(a) Remove the gasket from the thermostat.

INSPECTION





1. INSPECT THERMOSTAT
(a) The valve opening temperature is inscribed on the thermostat.





(b) Immerse the thermostat in water, and then gradually heat the water.
(c) Check the valve opening temperature of the thermostat.
Standard 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.
Standard valve lift: 10 mm (0.39 inch) 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 it is 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 to within 10° on either side of the prescribed position.





2. INSTALL WATER INLET
(a) Install the water inlet with the 2 nuts.
Torque: 9.0 Nm (92 kgf-cm, 80 inch lbs.)
3. CONNECT RADIATOR HOSE OUTLET
4. ADD ENGINE COOLANT
5. CHECK FOR ENGINE COOLANT LEAKS
6. INSTALL ENGINE UNDER COVER LH
7. INSTALL ENGINE UNDER COVER RH
8. INSTALL FRONT WHEEL OPENING EXTENSION PAD LH
9. INSTALL FRONT WHEEL OPENING EXTENSION PAD RH