Exhaust Pipe: Service and Repair
1. FRONT EXHAUST PIPEA: Removal
1) Disconnect battery ground cable.
2) Disconnect front oxygen sensor connector.
3) Disconnect rear oxygen sensor connector. (California spec. vehicles)
4) Lift-up the vehicle.
5) Disconnect rear oxygen sensor connector. (Except California spec. vehicles)
6) Separate center exhaust pipe from front exhaust pipe.
7) Remove bolts which hold front exhaust pipe onto cylinder heads.
CAUTION: Be careful not to pull down front exhaust pipe and center exhaust pipe.
8) Separate front exhaust pipe from front catalytic converter.
B: Installation
1) Install front catalytic converter to front 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) 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.)
3) Install center exhaust pipe to front exhaust pipe.
Tightening torque: 35 ± 5 Nm (3.6 ± 5 kg-m, 26.0 ± 3.6 ft. lbs.)
4) Connect rear oxygen sensor connector. (Except California spec. vehicles)
5) Lower the vehicle.
6) Connect rear oxygen sensor connector. (California spec. vehicles)
7) Connect front oxygen sensor connector.
8) Connect battery ground cable.
2. CENTER EXHAUST PIPE
A: Removal
1) Disconnect battery ground cable.
2) Lift-up the vehicle.
3) Disconnect rear oxygen sensor connector. (Except California spec. vehicles)
4) Separate center exhaust pipe and rear catalytic converter assembly from rear exhaust pipe.
5) Separate center exhaust pipe and rear catalytic. converter assembly from front catalytic converter.
6) Remove center exhaust pipe and rear catalytic converter assembly from hanger bracket.
CAUTION:
- Be careful not to pull down center exhaust pipe.
- After removing center exhaust pipe, do not apply excessive pulling force on front catalytic converter and front exhaust pipe.
B: Installation
CAUTION: Replace gaskets with new ones.
1) Install center exhaust pipe and rear catalytic converter assembly.
2) Temporarily tighten bolt which installs center exhaust pipe to hanger bracket.
3) Install center exhaust pipe to front catalytic converter.
Tightening torque: 35 ± 5 Nm (3.6 ± 0.5 kg-m, 26.0 ± 3.6 ft. lbs.)
4) Install center exhaust pipe to rear exhaust pipe.
Tightening torque: 18 ± 5 Nm (1.8 ± 0.5 kg-m, 13.0 ± 3.6 ft. lbs.)
5) Tighten bolt which holds center exhaust pipe to hanger bracket.
Tightening torque: 35 ± 5 Nm (3.6 ± 0.5 kg-m, 26.0 ± 3.6 ft. lbs.)
6) Connect rear oxygen sensor connector. (Except California spec. vehicles)
7) Lower the vehicle.
8) Connect battery ground cable.
3. REAR EXHAUST PIPE
A: Removal
1) Separate rear exhaust pipe from center exhaust pipe.
2) Separate rear exhaust pipe from muffler.
CAUTION: Be careful not to pull down rear exhaust pipe.
3) Remove rear exhaust pipe bracket from rubber cushion.
NOTE: To facilitate removal, apply a coat of SUBARU CRC or equivalent to pipe bracket in advance.
SUBARU CRC (Part No. 004301003)
B: Installation
CAUTION: Replace gaskets with new ones.
1) Install rear exhaust pipe bracket to rubber cushion.
NOTE: To facilitate installation, apply a coat of SUBARU CRC or equivalent to mating area of rubber cushion in advance.
SUBARU CRC (Part No. 004301003)
2) Install rear exhaust pipe to muffler.
Tightening torque: 48 ± 5 Nm (4.9 ± 0.5 kg-m, 35.4 ± 3.6 ft. lbs.)
3) Install rear exhaust pipe to center exhaust pipe.
Tightening torque: 18 ± 5 Nm (1.8 ± 45 kg-m, 13.0 ± 3.6 ft. lbs.)
4. MUFFLER
A: Removal And Installation
1) Separate muffler from rear exhaust pipe.
2) Remove left and right rubber cushions.
CAUTION: Be careful not to pull down muffler.
NOTE: To facilitate removal, apply a coat of SUBARU CRC or equivalent 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 or equivalent 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.)