Catalytic Converter - LH Manifold

Catalytic Converter - 3.0L LH Manifold

Removal

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Remove the oil level indicator and tube. For additional information, refer to Engine - 3.0L (4V) Oil Level Indicator and Tube.

3. Disconnect the Heated Oxygen Sensor (HO2S) and the Catalyst Monitor Sensor (CMS) electrical connectors.

4. Remove the 2 LH catalytic converter-to-exhaust flexible pipe nuts.
- Discard the gasket and the 2 nuts.

5. Remove the 4 bolts and the LH catalytic converter manifold shield.

6. Remove the 2 LH catalytic converter manifold shield bracket bolts and the shield bracket.

7. Remove the 2 LH catalytic converter manifold bracket bolts and bracket.

8. Remove the 6 nuts and the LH catalytic converter manifold.
- Discard the 6 LH catalytic converter manifold nuts and the gasket.

9. Remove and discard the 6 LH catalytic converter manifold studs.

10. Clean and inspect the catalytic converter manifold. For additional information, refer to Engine System - General Information Exhaust Manifold Cleaning and Inspection.

Installation

1. Install the 6 new LH catalytic converter manifold studs.
- Tighten to 11 Nm (97 lb-in).

2. Position a new LH catalytic converter manifold gasket on the studs.

3. Position the LH catalytic converter manifold and finger-tighten the 6 new nuts.

4. Install a new gasket and finger-tighten 2 new nuts at the LH catalytic converter-to-exhaust flexible pipe.

5. NOTICE: Failure to tighten the catalytic converter manifold nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

NOTICE: Failure to tighten the catalytic converter manifold nuts to specification a second time will cause the converter to develop an exhaust leak.

NOTE: Make sure to tighten the nuts in the sequence shown in 2 stages.

Position the LH catalytic converter manifold and tighten the 6 new nuts in the sequence shown, in 2 stages.

- Stage 1: Tighten to 20 Nm (177 lb-in).

- Stage 2: Tighten to 20 Nm (177 lb-in).





6. Install the shield bracket and the 2 LH catalytic converter manifold shield bracket bolts.
- Tighten to 20 Nm (177 lb-in).

7. Install the LH catalytic converter manifold bracket and 2 bolts.
- To install, tighten to 20 Nm (177 lb-in).

8. Position the LH catalytic converter manifold shield and install the 4 bolts.
- Tighten to 10 Nm (89 lb-in).

9. Tighten the 2 new LH catalytic converter-to-exhaust flexible pipe nuts.
- Tighten to 40 Nm (30 lb-ft).

10. Connect the HO2S and the CMS electrical connectors.

11. Install the oil level indicator and tube. For additional information, refer to Engine - 3.0L (4V) Oil Level Indicator and Tube.