Grand Cherokee 4WD V8-4.7L Flex Fuel (2009)
Catalytic Converter: Service and Repair
Catalytic Converter - Removal
4.7L ENGINE
WARNING: If torches are used when servicing the exhaust system, do not allow any flame near the fuel lines or the fuel tank. Failure to follow
these instructions may result in possible serious or fatal injury.
1. Raise and support the vehicle.
2. Saturate the bolts and nuts with heat valve lubricant. Allow 5 minutes for penetration.
3. Remove transmission crossmember See: Body and Frame/Frame/Cross-Member/Service and Repair/Crossmember - Removal/Transmission.
4. Disconnect and mark oxygen sensor electrical connectors.
5. Remove steady rest bracket mounting bolt (5) from transmission.
6. Remove the nuts from the front exhaust pipe/catalytic converter assembly to muffler flange.
7. Remove bolts (2) and flanged nuts (1) at the exhaust manifold.
8. Remove the front exhaust pipe/catalytic converter assembly (3) from the vehicle.
9. Remove steady rest bracket (4) from front exhaust pipe/catalytic converter assembly (3).
