4.
Disconnect the radiator lower hose (A).
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.
Remove the engine cover.
Drain engine coolant so that its level would be under the thermostat height.
(Refer to Cooling System - "Coolant")
Remove the air duct.
(Refer to Intake and Exhaust System - "Air Cleaner")
Disconnect the radiator lower hose (A).
Remove the water inlet fitting (A), O-ring (B) and thermostat (C).
Tightening torque :
16.7 ~ 22.6 N.m (1.7 ~ 2.3 kgf.m, 12.3 ~ 16.6 lb-ft)
Place the thermostat with the jiggle valve (A) upward.
Install in the reverse order of removal.
Fill the radiator with coolant.
(Refer to Cooling System - "Coolant")
Start engine and check for leaks.
Immerse the thermostat in water and gradually heat the water.
Check the valve opening temperature.
Valve opening temperature : 82 ± 2°C (179.6 ± 3.6°F)
Full opening temperature : 95°C (203°F)
If the valve opening temperature is not as specified, replace the thermostat.
Check the valve lift.
Valve lift :
10 mm (0.3937 in) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
