Subaru Legacy (2005 year). Manual - part 28

PM-19

PERIODIC MAINTENANCE SERVICES

Air Cleaner Element

• Refer to “COMPONENT” for tightening torque.

2.0 L non-turbo and 2.5 L model
<Ref. to IN(H4SO 2.0)-2, COMPONENT, Gen-
eral Description.>
Turbo model
<Ref. to IN(H4DOTC)-2, COMPONENT, Gener-
al Description.>
3.0 L model
<Ref. to IN(H6DO)-2, COMPONENT, General
Description.>

PM-20

PERIODIC MAINTENANCE SERVICES

Cooling System

10.Cooling System

A: INSPECTION

1) To check the radiator for leakage, fill it with en-
gine coolant, and attach the radiator cap tester (A)
to the filler neck, and apply pressure. Check the fol-
lowing points:

Non-turbo model:

157 kPa (1.6 kgf/cm

2

, 23 psi)

Turbo model:

122 kPa (1.2 kgf/cm

2

, 18 psi)

• Each portion of radiator for leakage
• Hose joints and other connections for leakage

NOTE:
• For turbo model, be sure to install the tester to fill-
er tank side.
• When attaching or detaching tester or when op-
erating tester, use special care not to deform radi-
ator filler neck.

• Non-turbo model

• Turbo model

• When performing this check, be sure to keep the
engine stationary and fill radiator with coolant.
• Wipe off check points before applying pressure.
• Use care not to spill coolant when detaching
tester from radiator.
• Do not remove the radiator side cap. (Turbo
model)
2) Check the radiator cap valve open pressure us-
ing radiator cap tester.

NOTE:
Rust or dirt on the cap may prevent valve from func-
tioning normally: be sure to clean the cap before
testing.
Raise the pressure until the needle of gauge stops
and see if the pressure can be retained for five to
six seconds. The radiator cap is normal if a pres-
sure above the service limit value has been main-
tained for this period.

Radiator cap valve open pressure

Non-turbo model

Standard

93 — 123 kPa (0.95 — 1.25 kgf/cm

2

, 14 — 18 

psi)

Service limit

83 kPa (0.85 kgf/cm

2

, 12 psi)

Turbo model

Filler tank side

Standard

93 — 123 kPa (0.95 — 1.25 kgf/cm

2

, 14 — 18 

psi)

Service limit

83 kPa (0.85 kgf/cm

2

, 12 psi)

PM-00128

(A)

PM-00184

(A)

PM-21

PERIODIC MAINTENANCE SERVICES

Cooling System

Radiator side

Standard

122 — 152 kPa (1.24 — 1.55 kgf/cm

2

, 18 — 

22 psi)

Service limit

112 kPa (1.14 kgf/cm

2

, 16 psi)

3) Start the engine, and then check it does not
overheat or it is cooled excessively. If it overheats
or it is cooled excessively, check the cooling sys-
tem.
• 2.0 L non-turbo and 2.5 L model
<Ref. to CO(H4SO 2.0)-15, Water Pump.> <Ref. to
CO(H4SO 2.0)-18, Thermostat.> <Ref. to
CO(H4SO 2.0)-20, Radiator.> <Ref. to CO(H4SO
2.0)-24, Radiator Cap.>
• Turbo model
<Ref. to CO(H4DOTC)-15, Water Pump.> <Ref. to
CO(H4DOTC)-17, Thermostat.> <Ref. to
CO(H4DOTC)-19, Radiator.> <Ref. to
CO(H4DOTC)-23, Radiator Cap.>
• 3.0 L model
<Ref. to CO(H6DO)-13, Water Pump.> <Ref. to
CO(H6DO)-14, Thermostat.> <Ref. to CO(H6DO)-
16, Radiator.> <Ref. to CO(H6DO)-19, Radiator
Cap.>
4) Check the radiator fan operates using Subaru
Select Monitor, when the coolant temperature ex-
ceeds 95

°C (203°F). If it does not operate, check

the radiator fan system.

• 2.0 L non-turbo and 2.5 L model
<Ref. to CO(H4SO 2.0)-8, INSPECTION, Radiator
Fan System.>
• Turbo model
<Ref. to CO(H4DOTC)-9, INSPECTION, Radiator
Fan System.>
• 3.0 L model
<Ref. to CO(H6DO)-9, INSPECTION, Radiator Fan
System.>

(A) Check points for deformation

(B) Check points for deformation, damage, rust

PM-00023

PM-00089

(B)

(A)

(A)

PM-22

PERIODIC MAINTENANCE SERVICES

Engine Coolant

11.Engine Coolant

A: REPLACEMENT

1. REPLACEMENT OF COOLANT

WARNING:
The radiator is of the pressurized type. Do not
attempt to open the radiator cap immediately
after the engine has been stopped.

1) Lift-up the vehicle.
2) Remove the under cover.
3) Place a container under drain pipe.
4) Remove the drain cock to drain engine coolant
into container.

5) For quick draining, open the radiator cap.

NOTE:
• For turbo model, be sure to open the radiator cap
on the filler tank side.
• Be careful not to spill coolant on the floor.
6) Drain the coolant from reservoir tank.
7) Tighten the radiator drain cock securely after
draining coolant.
8) Pour the engine coolant into the radiator (for tur-
bo model, coolant filler tank) up to the filler neck po-
sition.
9) Fill engine coolant into the reservoir tank up to
“FULL” level.

Recommended engine coolant:

Refer to “RM” section. <Ref. to RM-5, COOL-
ANT, RECOMMENDED MATERIALS, Recom-
mended Materials.>

Coolant capacity (fill up to “FULL” level):

LHD AT model

2.0 L non-turbo and 2.5 L model (without ATF 
cooler (with warmer))

6.3 

2 (6.7 US qt, 5.5 Imp qt)

2.0 L non-turbo and 2.5 L model (with ATF 
cooler (with warmer))

6.7 

2 (7.1 US qt, 5.9 Imp qt)

3.0 L model (without ATF cooler (with warm-
er))

7.2 

2 (7.6 US qt, 6.3 Imp qt)

3.0 L model (with ATF cooler (with warmer))

7.7 

2 (8.1 US qt, 6.8 Imp qt)

LHD MT model

2.0 L non-turbo and 2.5 L model

6.4 

2 (6.8 US qt, 5.6 Imp qt)

3.0 L model

7.3 

2 (7.7 US qt, 6.4 Imp qt)

RHD AT model

2.0 L non-turbo and 2.5 L model (without ATF 
cooler (with warmer))

6.4 

2 (6.8 US qt, 5.6 Imp qt)

2.0 L non-turbo and 2.5 L model (with ATF 
cooler (with warmer))

6.8 

2 (7.2 US qt, 6.0 Imp qt)

Turbo model

7.3 

2 (7.7 US qt, 6.4 Imp qt)

3.0 L model (without ATF cooler (with warm-
er))

7.2 

2 (7.6 US qt, 6.3 Imp qt)

3.0 L model (with ATF cooler (with warmer))

7.8 

2 (8.2 US qt, 6.9 Imp qt)

RHD MT model

2.0 L non-turbo and 2.5 L model

6.5 

2 (6.9 US qt, 5.7 Imp qt)

Turbo model

7.4 

2 (7.8 US qt, 6.5 Imp qt)

3.0 L model

7.3 

2 (7.7 US qt, 6.4 Imp qt)

NOTE:
The SUBARU Genuine Coolant containing anti-
freeze and anti-rust agents is especially made for
SUBARU engine, which has an aluminum crank-
case. Always use SUBARU Genuine Coolant,
since other coolant may cause corrosion.
10) Close the radiator (for turbo model, coolant fill-
er tank) cap to start the engine and race 5 to 6
times at less than 3,000 rpm, then stop the engine.
(Complete this operation within 40 seconds.)

CO-00248