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. Remove the engine cover.
2. Drain engine coolant so its level is below thermostat.
3. Remove the lower hose.
4. 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°C (177°F)
Full opening temperature: 95°C (205°F)
If the valve opening temperature is not as specified, replace the thermostat.
3. Check the valve lift.
Valve lift: 10mm(0.4in.) or more at 95°C (205°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 to the thermostat(B).
2. Install water inlet(A).
Tightening torque 16.7 - 19.6Nm (l.7 - 2.0kgf.m, 12.3 - 14.5lb-ft)
3. Install the lower hose.
4. Fill with engine coolant.
5. Start engine and check for leaks.