Grand Cherokee 4WD V8-4.7L Flex Fuel (2009)
Catalytic Converter: Service and Repair
Catalytic Converter - Installation
4.7L ENGINE
1. Position steady rest bracket (4) onto the front exhaust pipe/catalytic converter assembly (3).
2. Position the front exhaust pipe/catalytic converter assembly (3) into vehicle.
3. Install the bolts (2) and nuts (1) at the front exhaust pipe/catalytic converter assembly (3) to exhaust manifold flange. Do not tighten.
4. Install the nuts at the front exhaust pipe/catalytic converter assembly to muffler flange. Do not tighten.
5. Position the exhaust pipe for proper clearance with the frame and underbody parts. A minimum clearance of 25.4 mm (1.0 in.) is required.
6. Tighten front exhaust pipe/catalytic converter assembly to exhaust manifold bolts (2) to 26 Nm (19 in. lbs.) torque.
7. Tighten the front exhaust pipe and catalytic converter assembly to muffler flange nuts to 47 Nm (35 ft. lbs.) torque.
8. Install steady rest bracket bolts. Tighten bolts to 47 Nm (35 ft. lbs.).
9. Connect oxygen sensor electrical connectors.
10. Install transmission crossmember See: Body and Frame/Frame/Cross-Member/Service and Repair/Crossmember - Installation/Transmission
11. Lower vehicle.
12. Start the vehicle and inspect for exhaust leaks. Repair exhaust leaks as necessary.
