Subaru Legacy (2005 year). Manual - part 80

EX(H4SO 2.0)-7

EXHAUST

Front Exhaust Pipe

11) Remove the front oxygen (A/F) sensor and rear
oxygen sensor. <Ref. to FU(H4SO 2.0)-32, RE-
MOVAL, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.0)-33, REMOVAL, Rear Oxygen Sen-
sor.> or <Ref. to FU(H4SO 2.5)-35, REMOVAL,
Front Oxygen (A/F) Sensor.> <Ref. to FU(H4SO
2.5)-36, REMOVAL, Rear Oxygen Sensor.>

B: INSTALLATION

1) Install the front oxygen (A/F) sensor and rear ox-
ygen sensor. <Ref. to FU(H4SO 2.0)-32, INSTAL-
LATION, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.0)-33, INSTALLATION, Rear Oxygen
Sensor.> or <Ref. to FU(H4SO 2.5)-35, INSTALLA-
TION, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H4SO 2.5)-36, INSTALLATION, Rear Oxygen
Sensor.>
2) Install the front exhaust pipe to center exhaust
pipe.

NOTE:
Use a new gasket.

Tightening torque:

40.8 N

⋅

m (4.2 kgf-m, 30.1 ft-lb)

3) Install the front and center exhaust pipe assem-
bly to vehicle.
4) Temporarily tighten the nuts which hold front ex-
haust pipe to cylinder heads.

5) Install the front and center exhaust pipe assem-
bly to rear exhaust pipe.

NOTE:
Use a new gasket.

Tightening torque:

18 N

⋅

m (1.8 kgf-m, 13.0 ft-lb)

6) Tighten the bolt which holds center exhaust pipe
to hanger bracket.

Tightening torque:

35 N

⋅

m (3.6 kgf-m, 26.0 ft-lb)

7) Tighten the nuts which hold front exhaust pipe to
cylinder heads.

NOTE:
Use a new gasket.

Tightening torque:

30 N

⋅

m (3.1 kgf-m, 22.4 ft-lb)

8) Install the under cover.

EX-00217

EX-00215

EX-00214

EX-00216

EX-00215

EX(H4SO 2.0)-8

EXHAUST

Front Exhaust Pipe

9) Connect the rear oxygen sensor connector.

10) Lower the vehicle.
11) Connect the front oxygen (A/F) sensor connec-
tor.

12) Connect the ground cable to battery.

C: INSPECTION

1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.

FU-01116

ME-00859

IN-00203

EX(H4SO 2.0)-9

EXHAUST

Center Exhaust Pipe

3. Center Exhaust Pipe

A: REMOVAL

After removing the center and front exhaust pipes
as an assembly, separate them. Refer to “Front Ex-
haust Pipe” for removal procedure. <Ref. to
EX(H4SO 2.0)-6, REMOVAL, Front Exhaust Pipe.>

B: INSTALLATION

Install the center exhaust pipe and front exhaust
pipe as an assembly. Refer to “Front Exhaust Pipe”
for installation procedure. <Ref. to EX(H4SO 2.0)-
7, INSTALLATION, Front Exhaust Pipe.>

C: INSPECTION

1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.

EX(H4SO 2.0)-10

EXHAUST

Rear Exhaust Pipe

4. Rear Exhaust Pipe

A: REMOVAL

1) Separate the rear exhaust pipe from center ex-
haust pipe.

2) Separate the rear exhaust pipe from muffler.

CAUTION:
Be careful not to pull down the rear exhaust 
pipe.
• LH  side

• RH side (2.5 L model)

3) Apply a coat of spray type lubricant to the mating
area of cushion rubber.

4) Remove the rear exhaust pipe bracket from
cushion rubber.

B: INSTALLATION

1) Apply a coat of spray type lubricant to the mating
area of cushion rubber.
2) Install the rear exhaust pipe bracket to cushion
rubber.

3) Install the rear exhaust pipe to muffler.

NOTE:
Use a new gasket and self-locking nut.

Tightening torque:

48 N

⋅

m (4.9 kgf-m, 35.4 ft-lb)

• LH  side

EX-00214

EX-00222

EX-00218

EX-00219

EX-00219

EX-00222