Subaru Legacy (2005 year). Manual - part 406

EX(H6DO)-5

EXHAUST

Front Exhaust Pipe

10) Separate the front exhaust pipe (RH) from front
exhaust pipe assembly.

11) Remove the front oxygen (A/F) sensor and rear
oxygen sensor. <Ref. to FU(H6DO)-30, REMOV-
AL, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H6DO)-32, REMOVAL, Rear Oxygen Sensor.>

B: INSTALLATION

1) Install the front oxygen (A/F) sensor and rear ox-
ygen sensor. <Ref. to FU(H6DO)-30, INSTALLA-
TION, Front Oxygen (A/F) Sensor.> <Ref. to
FU(H6DO)-32, INSTALLATION, Rear Oxygen
Sensor.>
2) Install the front exhaust pipe (RH) to front ex-
haust pipe assembly.

NOTE:
Use a new gasket.

Tightening torque:

30 N

⋅

m (3.1 kgf-m, 22.4 ft-lb)

3) Install the front exhaust pipe assembly to vehi-
cle.
4) Temporarily tighten the nuts which hold front ex-
haust pipe assembly to cylinder heads.

5) Install the front exhaust pipe assembly 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 bolts which hold front exhaust pipe
assembly 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
assembly to cylinder heads.

NOTE:
Use a new gasket.

Tightening torque:

30 N

⋅

m (3.1 kgf-m, 22.4 ft-lb)

EX-02017

EX-02017

EX-02016

EX-02015

EX-00061

EX-02016

EX(H6DO)-6

EXHAUST

Front Exhaust Pipe

8) Install the front exhaust pipe cover. (MT model)

Tightening torque:

7.5 N

⋅

m (0.76 kgf-m, 5.5 ft-lb)

9) Install the under cover.
10) Connect the front oxygen (A/F) sensor connec-
tor (A) and rear oxygen sensor connector (B).

11) Lower the vehicle.
12) Connect the ground cable to battery.

C: INSPECTION

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

EX-02095

EX-02014

(A)

(B)

IN-00203

EX(H6DO)-7

EXHAUST

Rear Exhaust Pipe

3. Rear Exhaust Pipe

A: REMOVAL

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

CAUTION:
Be careful, because the exhaust pipe is hot.

2) Separate the rear exhaust pipe from muffler.

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

• RH  side

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-02015

EX-00222

EX-00218

EX-00219

EX-00219

EX-00222

EX(H6DO)-8

EXHAUST

Rear Exhaust Pipe

• RH  side

4) Install the rear exhaust pipe to center exhaust
pipe.

NOTE:
Use a new gasket.

Tightening torque:

18 N

⋅

m (1.8 kgf-m, 13.0 ft-lb)

C: INSPECTION

1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.
3) Check the cushion rubber for wear or crack.

EX-00218

EX-02015