Subaru Legacy (2005 year). Manual - part 86

CO(H4SO 2.0)-19

COOLING

Thermostat

Tightening torque:

12 N

⋅

m (1.2 kgf-m, 8.9 ft-lb)

2) Connect the radiator outlet hose to thermostat
cover.
3) Install the under cover.
4) Lower the vehicle.
5) Fill with engine coolant. <Ref. to CO(H4SO 2.0)-
13, FILLING OF ENGINE COOLANT, REPLACE-
MENT, Engine Coolant.>

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 measurement should be to
the specification.

NOTE:
• Leave the thermostat in the boiling water for
more than five minutes 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) Thermostat cover

(B) Gasket

(C) Thermostat

(D) Jiggle pin

CO-02167

(A)

T 

(B)

(C)

(D)

(A) Thermometer

(B) Thermostat

CO-00033

( A )

( B )

CO(H4SO 2.0)-20

COOLING

Radiator

6. Radiator

A: REMOVAL

CAUTION:
Wait until the engine cools down before work-
ing since the radiator is pressurized.
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.
(Model without ATF warmer)

6) Drain engine coolant completely. <Ref. to
CO(H4SO 2.0)-13, DRAINING OF ENGINE
COOLANT, REPLACEMENT, Engine Coolant.>

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

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

9) Disconnect the ATF hoses from ATF pipes.
(Model without ATF warmer)
Plug the ATF pipe to prevent ATF leaks.

10) Lower the vehicle.
11) Disconnect the over flow hose.
12) Remove the reservoir tank. <Ref. to CO(H4SO
2.0)-29, REMOVAL, Reservoir Tank.>

IN-00203

CO-00273

CO-00274

(A)

CO-00275

(B)

CO-00270

CO-00253

CO(H4SO 2.0)-21

COOLING

Radiator

13) Remove the hood stay holder.

14) Remove the air intake duct. <Ref. to IN(H4SO
2.0)-8, REMOVAL, Air Intake Duct.>
15) Disconnect the radiator inlet hose from engine.

16) Remove the radiator upper brackets.

17) Lift the radiator up and away from vehicle.

B: INSTALLATION

1) Attach the radiator lower cushions to holes 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 2.0)-
8, INSTALLATION, Air Intake Duct.>
6) Install the hood stay holder.

7) Install the reservoir tank. <Ref. to CO(H4SO
2.0)-29, INSTALLATION, Reservoir Tank.>
8) Connect the over flow hose.
9) Lift-up the vehicle.

CO-00276

CO-00277

CO-00278

CO-00041

CO-00278

CO-00277

CO-00276

CO(H4SO 2.0)-22

COOLING

Radiator

10) Connect the ATF hoses. (Model without ATF
warmer)

11) Connect the radiator outlet hose.

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

13) Install the heat shield cover. (Model without
ATF warmer)

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

17) Fill with engine coolant. <Ref. to CO(H4SO
2.0)-13, FILLING OF ENGINE COOLANT, RE-
PLACEMENT, Engine Coolant.>
18) Check the ATF level. <Ref. to 4AT-31, IN-
SPECTION, Automatic Transmission Fluid.>

C: INSPECTION

1) Remove the radiator cap, top off the radiator with
coolant, and then attach the tester in place of cap.

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

2

, 23

psi) to the radiator to check if the following cases
occur.
• Engine coolant leaks at/around radiator.
• Engine coolant leaks at/around hoses or connec-
tions.

CO-00253

CO-00270

CO-00274

(A)

CO-00275

(B)

CO-00273

IN-00203

CO-00094