Thermostat: Service and Repair
THERMOSTATCOMPONENTS:
REMOVAL
NOTE: Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat
1. Drain engine coolant so its level is below thermostat.
2. Remove water inlet(A) and thermostat(B).
INSPECTION
1. Immerse the thermostat in water and gradually heat the water.
2. Check the valve opening temperature.
Valve opening temperature: 82 degrees C (177 degrees F)
Full opening temperature: 95 degrees C (205 degrees F)
If the valve opening temperature is not as specified, replace the thermostat.
3. Check the valve lift.
Valve lift: Min, 10 mm (0.4 in.) at 95 degrees C (205 degrees F)
If the valve lift is not as specified, replace the thermostat.
INSTALLATION
1. Place thermostat in thermostat housing.
1) Install the thermostat with the jiggle valve upward.
2) Install a new thermostat(B).
2. Install water inlet(A).
Tightening torque 16.66-19.60 Nm (1.7-(2.0 kgf-m, 12.30-14.47 lb-ft)
3. Fill with engine coolant.
4. Start engine and check for leaks.