Exhaust System: Service and Repair

A: REMOVAL





1) Disconnect battery ground





2) Disconnect front oxygen (A/F) sensor connector.
3) Lift-up the vehicle.





4) Disconnect rear oxygen sensor connector.





5) Separate front and center exhaust pipe assembly from rear exhaust pipe.

WARNING: Be careful, exhaust pipe is hot.





6) Remove under cover.





7) Remove bolts which hold front exhaust pipe onto cylinder heads.

CAUTION: Be careful not to pull down front and center exhaust pipe assembly.





8) Remove bolt which installs front and center exhaust pipe assembly to hanger bracket.
9) Remove front and center exhaust pipe assembly from the vehicle.

CAUTION:
^ Be careful not to let front and center exhaust pipe assembly fall off when removing as it is quite heavy.
^ After removing front and center exhaust assembly, do not apply excessive pulling force on rear exhaust pipe.





10) Separate front exhaust pipe from center exhaust pipe.

B: INSTALLATION





1) Install front exhaust pipe to center exhaust pipe.

CAUTION: Replace gaskets with new ones.

Tightening torque: 30 ± 5 Nm (3.1 ± 0.5 kg-m, 22.4 ± 3.6 ft. lbs.)
2) Install front and center exhaust pipe assembly to the vehicle.





3) Temporarily tighten bolt which installs front and





4) Tighten bolts which hold front exhaust pipe onto cylinder heads.
Tightening torque: 30 ± 5 Nm (3.1 ± 0.5 kg-m, 22.4 ± 3.6 ft. lbs.)
5) Install under cover.





6) Tighten bolts which install front and center exhaust pipe assembly to rear exhaust pipe.
Tightening torque: 18 ± 5 Nm (1.8 ± 0.5 kg-m. 13.0 ± 3.6 ft. lbs.)





7) Tighten bolt which holds front and center exhaust pipe assembly to hanger bracket.
Tightening torque: 35 ± 5 Nm (3.6 ± 0.5 kg-m, 26.0 ± 3.6 ft. lbs.)





8) Connect rear oxygen sensor connector.
9) Lower the vehicle.





10) Connect front oxygen (A/F) sensor connector.





11) Connect battery ground cable.

REAR EXHAUST PIPE

A: REMOVAL





1) Separate rear exhaust pipe from center exhaust pipe.

CAUTION: Be careful, exhaust pipe is hot.





2) Separate rear exhaust pipe from muffler.

CAUTION: Be careful not to pull down rear exhaust pipe.

3) Remove rear exhaust pipe.

B: INSTALLATION

CAUTION: Replace gaskets with new ones.





1) Install rear exhaust pipe to muffler.
Tightening torque: 48 ± 5 Nm (4.9 ± 0.5 kg-m, 35.4 ± 3.6 ft. lbs.)





2) Install rear exhaust pipe to center exhaust pipe.
Tightening torque: 18 ± 5 Nm (1.8 ± 0.5 kg-m, 13.0 ± 3.6 ft. lbs.)

MUFFLER

A: REMOVAL AND INSTALLATION





1) Separate muffler from rear exhaust pipe.

CAUTION: Be careful, exhaust pipe is hot.





2) Remove left and right rubber cushions.

CAUTION: Be careful not to drop the muffler during removal.

NOTE: To facilitate removal, apply a coat of SUBARU CRC to mating area of rubber cushions in advance.

SUBARU CRC (Part No. 004301003)





3) Remove front rubber cushion, and detach muffler assembly.

NOTE: To facilitate removal, apply a coat of SUBARU CRC to mating area of rubber cushion in advance.

SUBARU CRC (Part No. 004301003)





4) Installation is in the reverse order of removal.

CAUTION: Replace gasket with a new one.

Tightening torque: 48 ± 5 Nm (4.9 ± 0.5 kg-m, 35.4 ± 3.6 ft. lbs.)