Subaru Legacy IV (2008 year). Manual - part 282

EX(H4DOTC)-3

General Description

EXHAUST

2. CENTER AND REAR EXHAUST PIPE, AND MUFFLER

(1)

Gasket

(13)

Chamber

Tightening torque:N·m (kgf-m, ft-lb)

(2)

Front catalytic converter

(14)

Cushion rubber

T1: 7.5 (0.8, 5.5)

(3)

Center exhaust pipe (Front)

(15)

Spring

T2: 13 (1.3, 9.6)

(4)

Center exhaust pipe (Rear)

(16)

Bolt

T3: 18 (1.8, 13.3)

(5)

Gasket

(17)

Gasket

T4: 23 (2.3, 17.0)

(6)

Center pipe upper cover (Rear)

(18)

Self-locking nut

T5: 30 (3.1, 22.1)

(7)

Clamp

(19)

Muffler LH

T6: 35 (3.6, 25.8)

(8)

Rear catalytic converter lower 
cover

(20)

Muffler RH

T7: 40 (4.1, 29.5)

(21)

Hanger bracket (AT model)

T8: 42.5 (4.3, 31.3)

(9)

Rear oxygen sensor

(22)

Hanger bracket (5MT model)

T9: 48 (4.9, 35.4)

(10)

Rear catalytic converter

(23)

Hanger bracket (6MT model)

T10: <Ref. to FU(H4DOTC)-48, 

INSTALLATION, Rear Oxygen 
Sensor.>

(11)

Gasket

(24)

Muffler cutter

(12)

Rear exhaust pipe

EX-02369

(11)

A

(12)

(13)

(16)

(15)

(14)

(14)

(17)

(14)

(17)

(19)

(20)

(14)

(14)

(18)

T9

(18)

T9

(18)

T9

(18)

T9

A

(10)

T8

T3

T10

(6)

(4)

(9)

(8)

(5)

(7)

T5

T8

T8

(1)

(2)

(3)

T3

T2

T2

T6

T1

T1

T1

T1

(24)

(24)

(21)

(22)

T4

(23)

T7

EX(H4DOTC)-4

General Description

EXHAUST

B: CAUTION

• Wear appropriate work clothing, including a cap,
protective goggles and protective shoes when per-
forming any work.
• Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust and dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
• Vehicle components are extremely hot after driv-
ing. Be wary of receiving burns from heated parts.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or rigid racks at the specified
points.
• Before disconnecting connectors of sensors or
units, be sure to disconnect the ground cable from
the battery.
• If any fat adheres to the exhaust pipe, wipe it off.
Otherwise a fire may happen.

EX(H4DOTC)-5

Front Exhaust Pipe

EXHAUST

2. Front Exhaust Pipe

A: REMOVAL

CAUTION:
Vehicle components are extremely hot after
driving. Be wary of receiving burns from heated
parts.
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 front oxygen (A/F) sensor. <Ref. to
FU(H4DOTC)-46, REMOVAL, Front Oxygen (A/F)
Sensor.>
6) Remove the exhaust manifold RH lower cover
and exhaust manifold LH cover.

7) Remove the bolts and nuts which hold front ex-
haust pipe assembly onto turbocharger joint pipe.

8) While holding the front exhaust pipe assembly
with one hand, remove the nuts which hold the front
exhaust pipe assembly to cylinder head exhaust
port.

9) Remove the front exhaust pipe assembly.
10) Remove the exhaust manifold RH upper cover
and the front exhaust pipe cover.
11) Separate the front exhaust pipe from exhaust
manifolds.

IN-00203

EX-02336

EX-00018

EX-02254

EX-00005

EX-02328

EX(H4DOTC)-6

Front Exhaust Pipe

EXHAUST

B: INSTALLATION

1) Install the front exhaust pipe and the exhaust
manifold.

NOTE:
Use a new gasket.

Tightening torque:

42.5 N·m (4.3 kgf-m, 31.3 ft-lb)

2) Install the front exhaust pipe cover.

Tightening torque:

25 N·m (2.5 kgf-m, 18.4 ft-lb)

3) Install the exhaust manifold RH upper cover.

Tightening torque:

19 N·m (1.9 kgf-m, 14.0 ft-lb)

4) Install the front exhaust pipe assembly.

NOTE:
Use a new gasket.

Tightening torque:

40 N·m (4.1 kgf-m, 29.5 ft-lb)

5) Connect the exhaust manifold RH to the turbo-
charger joint pipe.

NOTE:
Use a new gasket.

Tightening torque:

42.5 N·m (4.3 kgf-m, 31.3 ft-lb)

6) Install the exhaust manifold RH lower cover and
exhaust manifold LH cover.

Tightening torque:

19 N·m (1.9 kgf-m, 14.0 ft-lb)

7) Install the front oxygen (A/F) sensor. <Ref. to
FU(H4DOTC)-46, INSTALLATION, Front Oxygen
(A/F) Sensor.>
8) Install the under cover.
9) Lower the vehicle.
10) Connect the ground cable to battery.

C: INSPECTION

1) Check the connections and welds for exhaust
leaks.
2) Make sure there are no holes or rusting.

EX-02328

EX-02254

EX-00005

EX-00018

EX-02336

IN-00203