- Removal and Installation

Disassembly 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.

Drain engine coolant so its level is below thermostat.

(Refer to Cooling System - "Coolant")

Disconnect the Radiator lower hose quick connector (A).

When the hose detached, remove the holder clip (A) and then disconnect the quick connector.

Remove the water inlet fitting and thermostat (A).

Tightening torque :

18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

Install in the reverse order of removal.

When assembling the thermostat, place the thermostat on the housing with a protrusion of thermostat matching with a groove of the housing and install the inlet fitting. Be careful the thermostat doesn’t get out of the groove on the housing.

Unfasten the heater pipe mounting bolts (A) and then remove the heater pipe.

Tightening torque :

19.6 - 23.5 N.m (2.0 - 2.4 kgf.m, 14.5 - 17.4 lb-ft)

- Inspection

Immerse the only thermostat part in water and gradually heat the water.

Check the valve lift.

If the valve lift is not as specified, replace the thermostat.

Valve lift : 8 mm (0.3 in.) or more at 115°C (239°F)

Operation	Task	Skill	Hours
Remove & Replace	Cooling System · Thermostat Gasket, R&R	B	1.2
Remove & Replace	Cooling System · Thermostat, R&R	B	1.2