Catalytic Converter: Service and Repair

FRONT CATALYTIC CONVERTER
REMOVAL





1. Disconnect front oxygen sensor connector.

2. Lift-up the Vehicle.





3. Disconnect rear oxygen sensor connector.
4. Separate center exhaust pipe from rear exhaust pipe.
5. Remove bolts which hold front exhaust pipe onto cylinder heads.
6. Remove front exhaust pipe and center exhaust pipe from hanger bracket.

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

7. Separate front catalytic converter from front exhaust pipe and center exhaust pipe.

INSTALLATION

CAUTION: Replace gaskets with new ones.





1. Install front catalytic converter to front exhaust pipe and center exhaust pipe.

Tightening Torque: 30 ± 5 N.m (22.4 ± 3.6 ft-lb).

2. Install front exhaust pipe and center exhaust pipe and temporarily tighten bolt which installs center exhaust pipe to hanger bracket.

3. Tighten bolts which hold front exhaust pipe onto cylinder heads.

Tightening Torque: 30 ± 5 N.m (22.4 ± 3.6 ft-lb).

4. Install center exhaust pipe to rear exhaust pipe.

Tightening Torque: 18 ± 5 N.m (13.0 ± 3.6 ft-lb).

5. Tighten bolt which holds center exhaust pipe to hanger bracket.

Tightening Torque: 35 ± 5 N.m (26.0 ± 3.6 ft-lb).





6. Connect rear oxygen sensor connector.





7. Lower the Vehicle.
8. Connect front oxygen sensor connector.

REAR CATALYTIC CONVERTER
REMOVAL





1. Lift-up the Vehicle.
2. Disconnect Rear oxygen sensor connector.
3. Separate center exhaust pipe and rear catalytic converter assembly from rear exhaust pipe.
4. Separate center exhaust pipe and rear catalytic converter assembly from front catalytic converter.
5. 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.

INSTALLATION

CAUTION: Replace gaskets with new ones.
1. Install center exhaust pipe and rear catalytic converter assembly. Temporarily tighten bolt which installs center exhaust pipe to hanger bracket.
2. Install center exhaust pipe to Front Catalytic Converter.

Tightening Torque: 35 ± 5 N.m (26.0 ± 3.6 ft-lb).

3. Install center exhaust pipe to rear exhaust pipe.

Tightening Torque: 18 ± 5 N.m (13.0 ± 3.6 ft-lb).

4. Tighten bolt which holds center exhaust pipe to hanger bracket.

Tightening Torque: 35 ± 5 N.m (26.0 ± 3.6 ft-lb).





5. Connect rear oxygen sensor connector.