Catalytic Converter - 3.0L LH Manifold: Installation

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

Install the 6 new LH catalytic converter manifold studs.
- Tighten to 11 Nm (97 lb-in).
Position a new LH catalytic converter manifold gasket on the studs.
Position the LH catalytic converter manifold and finger-tighten the 6 new nuts.
Install a new gasket and finger-tighten 2 new nuts at the LH catalytic converter-to-exhaust flexible pipe.
Position the LH catalytic converter manifold and tighten the 6 new nuts in the sequence shown in illustration, in 2 stages.
- Stage 1: Tighten to 20 Nm (177 lb-in).
- Stage 2: Tighten to 20 Nm (177 lb-in).
NOTE: 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.

NOTE: 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 illustration in 2 stages.

Fig 1: Identifying Tightening Sequence Of LH Catalytic Converter Manifold Nuts
Courtesy of FORD MOTOR CO.
Install the shield bracket and the 2 LH catalytic converter manifold shield bracket bolts.
- Tighten to 20 Nm (177 lb-in).
Install the LH catalytic converter manifold bracket and 2 bolts.
- To install, tighten to 20 Nm (177 lb-in).
Position the LH catalytic converter manifold shield and install the 4 bolts.
- Tighten to 10 Nm (89 lb-in).
Tighten the 2 new LH catalytic converter-to-exhaust flexible pipe nuts.
- Tighten to 40 Nm (30 lb-ft).
Connect the HO2S and the CMS electrical connectors.
Install the oil level indicator and tube. For additional information, refer to REMOVAL AND INSTALLATION .