Subaru Legacy IV (2008 year). Manual - part 250

EC(H4DOTC)-20

PCV Hose Assembly

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

14.PCV Hose Assembly

A: REMOVAL

CAUTION:
Do not remove unless the PCV hose, diagnos-
tics connector and PCV valve are damaged.
1) Remove the collector cover.
2) Remove the intake manifold. <Ref. to
FU(H4DOTC)-16, REMOVAL, Intake Manifold.>
3) Remove the secondary air combination valve
RH. <Ref. to EC(H4DOTC)-22, SECONDARY AIR
COMBINATION VALVE RH, REMOVAL, Second-
ary Air Combination Valve.>
4) Fit the depression in the ST with the protrusion
on the clamp to unlock.
5) Remove the PCV hose assembly.
ST

18353AA000

CLAMP PLIER

B: INSTALLATION

1) Install the PCV hose assembly, then lock by fit-
ting the ST on the clamp protrusion.

NOTE:
Use a new clamp.
ST

18353AA000

CLAMP PLIER

2) Install the secondary air combination valve RH.
<Ref. to EC(H4DOTC)-23, SECONDARY AIR
COMBINATION VALVE RH, INSTALLATION, Sec-
ondary Air Combination Valve.>
3) Install the intake manifold. 
<Ref. to FU(H4DOTC)-20, INSTALLATION, Intake
Manifold.>
4) Install the collector cover.

EC-02388

EC-02388

EC(H4DOTC)-21

Secondary Air Pump

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

15.Secondary Air Pump

A: REMOVAL

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Disconnect the connector (A) and air duct (B)
from secondary air pump.

4) Remove the clip (A) which holds the harness on
the harness stay and remove the bolts (B) which
holds the secondary air pump on the vehicle.

5) Remove the secondary air pump.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

19 N·m (1.9 kgf-m, 14.0 ft-lb)

C: INSPECTION

Make sure the hoses are not cracked or loose.

IN-00203

EC-02193

(A)

(B)

EC-02404

(A)

(B)

EC-02370

EC(H4DOTC)-22

Secondary Air Combination Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

16.Secondary Air Combination 

Valve

A: REMOVAL

1. SECONDARY AIR COMBINATION 
VALVE LH

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Remove the intercooler. <Ref. to IN(H4DOTC)-
12, REMOVAL, Intercooler.>
4) Disconnect the connector from the secondary air
combination valve LH.
5) Disconnect the air duct A.
6) Remove the secondary air pipe LH.
7) Remove the secondary air combination valve
LH.

2. SECONDARY AIR COMBINATION 
VALVE RH

1) Remove the collector cover.
2) Disconnect the ground cable from battery.

3) Remove the intercooler. <Ref. to IN(H4DOTC)-
12, REMOVAL, Intercooler.>
4) Remove the intake manifold. <Ref. to
FU(H4DOTC)-16, REMOVAL, Intake Manifold.>
5) Disconnect the air duct A.
6) Remove the secondary air pipe RH.
7) Remove the secondary air combination valve
RH.

(A) Secondary air combination valve LH

(B) Clamp

(C) Air duct A

(D) Gasket

(E) Air duct B

(F) Secondary air pipe LH

(G) Gasket

IN-00203

EC-02407

(A)

(D)

(F)

(B)

(B)

(E)

a

a

(G)

(C)

b

b

(A) Secondary air combination valve RH

(B) Clamp

(C) Air duct A

(D) Gasket

(E) Secondary air pipe RH

(F) Gasket

IN-00203

EC-02213

(B)

(C)

(E)

(F)

(D)

(A)

EC(H4DOTC)-23

Secondary Air Combination Valve

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

B: INSTALLATION

1. SECONDARY AIR COMBINATION 
VALVE LH

Install in the reverse order of removal.

NOTE:
Use a new gasket.

Tightening torque:

T1: 9 N·m (0.9 kgf-m, 6.6 ft-lb)
T2: 19 N·m (1.9 kgf-m, 14.0 ft-lb)

2. SECONDARY AIR COMBINATION 
VALVE RH

Install in the reverse order of removal.

NOTE:
Use a new gasket.

Tightening torque:

T: 9 N·m (0.9 kgf-m, 6.6 ft-lb)

C: INSPECTION

Check the air duct and pipe for looseness.

(A) Secondary air combination valve LH

(B) Clamp

(C) Air duct A

(D) Gasket

(E) Air duct B

(F) Secondary air pipe LH

(G) Gasket

EC-02390

(A)

(D)

(F)

(B)

(B)

(E)

T1

T2

a

a

T1

(G)

(C)

b

b

(A) Secondary air combination valve RH

(B) Clamp

(C) Air duct A

(D) Gasket

(E) Secondary air pipe RH

(F) Gasket

EC-02425

(B)

(C)

(E)

(F)

(D)

(A)

T

T

T