Catalytic Converter

Catalytic Converter

Removal and Installation

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury. Procedures

With the vehicle in NEUTRAL, position it on a hoist.

2. WARNING: Shut off the electrical power to the air suspension system prior to hoisting or jacking an air suspension equipped vehicle. Failure to do so may result in unexpected inflation or deflation of the air springs, which may result in shifting of the vehicle during these operations. Failure to follow this instruction may result in serious personal injury.

If equipped, turn the air suspension switch OFF.

3. For RH catalytic converter removal, disconnect the Heated Oxygen Sensor (HO2S) electrical connector.

4. Disconnect the Catalyst Monitor Sensor (CMS) electrical connector.

5. NOTE: To correctly seat the converter, alternately tighten the catalytic converter-to-exhaust manifold nuts to specification.

Remove and discard the 2 catalytic converter-to-exhaust manifold nuts.

- To install, alternately tighten the new nuts to 40 Nm (30 lb-ft).

6. NOTE: Alternate tightening the catalytic converter-to-exhaust inlet pipe bolts to specifications to draw the flanges together evenly.

Remove the 2 catalytic converter-to-inlet pipe bolts, the 2 flagnuts, the damper (if equipped) and the catalytic converter.

- Discard the bolts, the flagnuts and the gaskets.

- To install, alternately tighten the new bolts to 40 Nm (30 lb-ft).

7. NOTE: Clean the mating surfaces of the exhaust manifold, the outlet pipe and the catalytic converter.

NOTE: Always install new exhaust system fasteners and gaskets. Do not tighten the fasteners until all components are assembled. Make sure to tighten all fasteners beginning at the front of the vehicle.

To install, reverse the removal procedure.

8. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury. Procedures

If equipped with a fire suppression system, repower the system.