Subaru Legacy IV (2008 year). Service manual - part 83

CO(H4SO)-18

Thermostat

COOLING

C: INSPECTION

Replace the thermostat if the valve does not close
completely at an ambient temperature or if any mal-
function is detected by the following test.
• Inspection method
Immerse the thermostat and a thermometer in wa-
ter. Raise water temperature gradually, and mea-
sure the temperature and valve lift when the valve
begins to open and when the valve is fully opened.
During the test, agitate the water for even temper-
ature distribution. The measured value should
meet the specification.

NOTE:

• Leave the thermostat in the boiling water for
five minutes or more before measuring valve lift.
• Hold the thermostat with a wire or the like to
avoid contacting with container bottom.

Opening start temperature:

80 — 84°C (176 — 183°F)

Full open temperature:

95°C (203°F)

Total valve lift:

9.0 mm (0.354 in) or more

(A) Thermometer

(B) Thermostat

CO-02420

(A)

(B)

CO(H4SO)-19

Radiator

COOLING

6. Radiator

A: REMOVAL

CAUTION:
The radiator is pressurized. Wait until engine
cools down before working on the radiator.
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.

3) Lift up the vehicle.
4) Remove the under cover.
5) Remove the heat shield cover from radiator. (AT
model)

6) Drain engine coolant completely.
<Ref. to CO(H4SO)-13, DRAINING OF ENGINE
COOLANT, REPLACEMENT, Engine Coolant.>

7) Disconnect the connectors of radiator main fan
motor connector (A) and radiator sub fan motor
connector (B).

8) Disconnect the radiator outlet hose from thermo-
stat cover.

9) Disconnect the ATF cooler hoses from ATF
pipes. (AT model)

NOTE:
Plug the ATF pipe to prevent ATF from leaking.

10) Lower the vehicle.
11) Disconnect the over flow hose.
12) Remove the reservoir tank. <Ref. to
CO(H4SO)-28, REMOVAL, Reservoir Tank.>

IN-00203

CO-02355

(A)

CO-02097

CO-02466

(B)

CO-00270

CO-00253

CO(H4SO)-20

Radiator

COOLING

13) Remove the hood stay holder.

14) Remove the air intake duct. <Ref. to IN(H4SO)-
8, REMOVAL, Air Intake Duct.>
15) Disconnect the radiator inlet hoses from the en-
gine.

16) Remove the radiator upper brackets.

17) Lift the radiator up and away from vehicle.

B: INSTALLATION

1) Attach the radiator lower cushion to the hole on
the radiator lower bracket.

2) Install the radiator to vehicle.

NOTE:
Make pins on the lower side of radiator be fitted into
the radiator lower cushions on body side.
3) Install the radiator upper brackets and tighten
the bolts.

Tightening torque:

12 N·m (1.2 kgf-m, 8.9 ft-lb)

4) Connect the radiator inlet hose.

5) Install the air intake duct. <Ref. to IN(H4SO)-8,
INSTALLATION, Air Intake Duct.>

CO-00276

CO-00277

CO-00278

CO-00041

CO-00278

CO-00277

CO(H4SO)-21

Radiator

COOLING

6) Install the hood stay holder.

Tightening torque:

7.5 N·m (0.8 kgf-m, 5.5 ft-lb)

7) Install the reservoir tank. <Ref. to CO(H4SO)-
28, INSTALLATION, Reservoir Tank.>
8) Connect the over flow hose.
9) Lift up the vehicle.
10) Connect the ATF cooler hoses. (AT model)

11) Connect the radiator outlet hose.

12) Connect the radiator main fan motor connector
(A) and radiator sub fan motor connector (B).

13) Install the heat shield cover. (AT model)

Tightening torque:

3 N·m (0.3 kgf-m, 2.2 ft-lb)

14) Install the under cover.
15) Lower the vehicle.
16) Connect the ground cable to battery.

17) Fill engine coolant. <Ref. to CO(H4SO)-13,
FILLING OF ENGINE COOLANT, REPLACE-
MENT, Engine Coolant.>
18) Check the ATF level. (AT model) <Ref. to 4AT-
26, INSPECTION, Automatic Transmission Fluid.>

CO-00276

CO-00253

CO-00270

(A)

CO-02097

CO-02466

(B)

CO-02355

IN-00203