Catalytic Converter LH

Catalytic Converter LH

Service Repair No - 17.50.03

Special Service Tools





Removal

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.

1. Raise and support the vehicle.
2. Disconnect the LH catalytic converter from the exhaust manifold.
^ Remove and discard the 2 nuts.

3. Disconnect the RH catalytic converter from the exhaust manifold.
^ Remove and discard the 2 nuts.





4. Disconnect the 2 front exhaust hangers.





5. Disconnect the LH heated oxygen sensor (HO2S) electrical connector.





6. Disconnect the LH catalyst monitor sensor electrical connector.
^ Release the wiring harness.





7. Remove the LH catalytic converter.
^ Using the special tool, cut the exhaust pipe at the point indicated by a depression in the pipe.





8. Using the special tool, remove the HO2S.
9. Using the special tool, remove the catalyst monitor sensor.





Installation

CAUTION: Make sure the anti-seize compound does not contact the catalyst monitor sensor tip.

1. Using the special tool, install the catalyst monitor sensor.
^ Clean the components.
^ Apply an anti-seize compound to the thread of the sensor.
^ Tighten the catalyst monitor sensor to 45 Nm (33 ft. lbs.).

CAUTION: Make sure the anti-seize compound does not contact the HO2S tip.

2. Using the special tool, install the HO2S.
^ Clean the components.
^ Apply an anti-seize compound to the thread of the sensor.
^ Tighten the HO2S to 45 Nm (33 ft. lbs.).

NOTE: Do not tighten the retaining clamp at this stage.

3. Install the LH catalytic converter.
^ Clean the components.
^ Install the retaining clamp.

4. Attach the exhaust hangers.
5. Position the RH catalytic converter to the exhaust manifold.
^ Clean the components.
^ Tighten the new nuts to 20 Nm (15 ft. lbs.).

6. Position the LH catalytic converter to the exhaust manifold.
^ Clean the components.
^ Tighten the new nuts to 20 Nm (15 ft. lbs.).

7. Align the LH catalytic converter and tighten the retaining clamp to 55 Nm (40 ft. lbs.).

NOTE: For NAS vehicles only.

8. If required, carry out a long drive cycle.