Subaru Legacy IV (2008 year). Manual - part 497

CO(H6DO)-14

Thermostat

COOLING

C: INSPECTION

Replace the thermostat if the valve does not close
completely at an ambient temperature or if the fol-
lowing test shows unsatisfactory results.
• 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 the valve
lift.
• Hold the thermostat with a wire or the like to
avoid contacting with container bottom.

Starting temperature to open:

80 — 84°C (176 — 183°F)

Fully opens:

95°C (203°F)

Valve lift:

9.0 mm (0.354 in) or more

(A) Thermometer

(B) Thermostat

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(A)

(B)

CO(H6DO)-15

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) Remove the collector cover.
3) Disconnect the ground cable from battery.

4) Lift up the vehicle.
5) Remove the under cover.
6) Drain engine coolant completely. <Ref. to
CO(H6DO)-10, DRAINING OF ENGINE COOL-
ANT, REPLACEMENT, Engine Coolant.>
7) Disconnect the radiator outlet hose from radia-
tor.

8) Disconnect the ATF hose from the radiator.

9) Lower the vehicle.

10) Remove the hood stay holder.

11) Remove the air intake duct. <Ref. to IN(H6DO)-
8, REMOVAL, Air Intake Duct.>
12) Disconnect the connector from radiator fan
control unit.

13) Remove the reservoir tank. <Ref. to
CO(H6DO)-24, REMOVAL, Reservoir Tank.>
14) Disconnect the radiator inlet hose from radia-
tor.
15) Remove the radiator upper brackets.

16) Lift the radiator up and away from vehicle.

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(A) Radiator inlet hose

(B) Radiator upper bracket

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(A)

(B)

CO(H6DO)-16

Radiator

COOLING

B: INSTALLATION

1) Attach the radiator lower cushions to holes on
the vehicle.

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 reservoir tank. <Ref. to CO(H6DO)-
24, INSTALLATION, Reservoir Tank.>
6) Connect the connector to the radiator fan control
unit.

7) Install the air intake duct. <Ref. to IN(H6DO)-8,
INSTALLATION, Air Intake Duct.>

8) Install the hood stay holder.

Tightening torque:

7.5 N·m (0.8 kgf-m, 5.5 ft-lb)

9) Lift up the vehicle.
10) Connect the ATF hoses.

11) Connect the radiator outlet hose.

12) Install the under cover.
13) Lower the vehicle.
14) Connect the ground cable to battery.

15) Fill engine coolant. <Ref. to CO(H6DO)-10,
FILLING OF ENGINE COOLANT, REPLACE-
MENT, Engine Coolant.>

(A) Radiator inlet hose

(B) Radiator upper bracket

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(A)

(B)

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CO(H6DO)-17

Radiator

COOLING

16) Check the ATF level. <Ref. to 5AT-28, IN-
SPECTION, Automatic Transmission Fluid.>
17) Install the collector cover.

C: INSPECTION

1) Remove the radiator cap, fill the radiator with en-
gine coolant, and then install the tester to the instal-
lation position of cap.

2) Apply a pressure of 157 kPa (1.6 kgf/cm

2

, 23

psi) to the radiator and check the following points:
• Leakage from the radiator or its vicinity
• Leakage from the hose or its connections

CAUTION:
• Engine should be turned off.
• Wipe engine coolant from check points in ad-
vance.
• Be careful of the spurt of engine coolant
when removing the tester.
• Be careful not to deform the filler neck of ra-
diator when installing and removing the tester.

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