Thermostat (FA20 / for engine coolant)
Components Removal / installation
COOLING
THERMOSTAT (FA20 / FOR ENGINE COOLANT)
EXPLODED VIEW
REMOVAL
1. Removal of exhaust manifold (Refer to 
)
)2. Draining of coolant (SUBARU Super Coolant) (Refer to )
)
3. Radiator outlet hose disconnection
(1) Move the hose clamp and disconnect the radiator outlet hose.
NOTE:
Since the hose has its proper installation position, mark the alignment mark before removing it.
4. Water outlet removal
(1) Remove the two bolts and remove the water outlet.
5. Thermostat removal
(1) Remove the thermostat.
(2) Remove the gasket from the thermostat.
INSPECTION
1. Thermostat check
(1) Check that the valve is fully closed when the thermostat is at 83°C {181°F} or less.
NOTE:
Replace the thermostat if the valve is not fully closed.
(2) Immerse the thermostat in water and heat it gradually.
NOTE:
Hold the thermostat with a wire or the like to avoid contacting with container bottom.
(3) Check the temperature when the valve starts to open.
Standard value
: 86 to 90°C {187 to 194°F}
NOTE:
Replace the thermostat if the temperature when the valve opens is outside the standard range.
INSTALLATION
1. Thermostat installation
(1) Install a new gasket to the thermostat.
(2) Install the thermostat to the water outlet.
2. Water outlet installation
(1) Install the water outlet with the two bolts.
Standard value:
Standard value:
Tightening torque=6.4N·m
{
65kgf·cm}
{4.7ft·lbf}
3. Radiator outlet hose connection
(1) Align the marks marked when removing the hose, install the radiator outlet hose to the water outlet and secure the hose with the hose clamp.
4. Replenishing of coolant (SUBARU Super Coolant) (Refer to )
)5. Leak check of coolant (SUBARU Super Coolant) (Refer to )
)6. Exhaust manifold installation (Refer to )
)