Thermostat (FA20 / transmission AT)
Components Removal / installation
COOLING
THERMOSTAT (FA20 / TRANSMISSION AT)
EXPLODED VIEW
REMOVAL
1. Draining of coolant (SUBARU Super Coolant) (Refer to 
)
)2. Removal of intake manifold (Refer to )
)
3. Radiator outlet hose disconnection
(1) Move the hose clamp and disconnect the radiator outlet hose.
4. Water inlet housing removal
(1) Remove the two bolts and remove the water inlet housing.
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 45°C {113°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
: 48 to 52°C {118 to 126°F}
NOTE:
Replace the thermostat if the temperature when the valve opens is outside the standard range.
INSTALLATION
1. Thermostat installation
2. Water inlet housing installation
(1) Install the thermostat cover with the two bolts.
Standard value:
Standard value:
Tightening torque=6.4N·m
{
65kgf·cm}
{4.7ft·lbf}
3. Radiator outlet hose connection
(1) Connect the water hose to the thermostat cover and secure it with the hose clamp.
4. Replenishing of coolant (SUBARU Super Coolant) (Refer to )
)5. Leak check of coolant (SUBARU Super Coolant) (Refer to )
)6. Installation of intake manifold (Refer to )
)