Exhaust Manifold Replacement - Right Side

Exhaust Manifold Replacement - Right Side (V8 and LHD) (4.6L, 4.4L SC)

Removal Procedure
Warning: Refer to Exhaust Service Warning (Service Precautions).

Warning: Refer to Protective Goggles and Glove Warning (Protective Goggles and Glove Warning).





1. Remove the generator bolts (1-3) and remove the generator assembly. Refer to Generator Replacement (LLT) (Generator Replacement)Generator Replacement (LH2 /AWD) (Generator Replacement)Generator Replacement (LH2) (Generator Replacement)Generator Replacement (LC3) (Generator Replacement).




2. With the aid of an assistant, remove the exhaust system. Refer to Exhaust System Replacement (Service and Repair).




3. Disconnect the Bank 1, Sensor 1 heated oxygen sensor pigtail from the wiring harness connector (1).




4. If the vehicle is equipped with all wheel drive (AWD), remove the right outer tie rod end from the steering knuckle to gain access to the upper rear exhaust manifold shield bolt. Refer to Steering Linkage Outer Tie Rod Replacement (Steering Linkage Outer Tie Rod Replacement).
5. Remove the bolts securing the engine wiring harness bracket to the right cylinder head.
Position the wire harness bracket aside.
6. Remove the right exhaust manifold heat shield bolts.
7. Reposition the shield forward in vehicle in the area where the generator mounts, to gain access to the exhaust manifold bolts.




8. Remove the right exhaust manifold bolts and nuts. Discard the exhaust manifold bolts.
9. Remove the exhaust manifold studs, if necessary.
10. Remove the right exhaust manifold and the gasket from the engine. Do not reuse the gasket.
11. If necessary, remove the exhaust manifold heat shield from the vehicle.
12. Remove the heated oxygen sensor, if necessary, from the exhaust manifold. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (Service and Repair) for the 4.6L engine.
13. Clean and inspect the right exhaust manifold. Refer to Exhaust Manifold Cleaning and Inspection - Right Side (Overhaul) for the 4.6L engine.

Installation Procedure




1. Install the heated oxygen sensor to the exhaust manifold, if previously removed. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (Service and Repair) for the 4.6L engine.
2. If previously removed, install the exhaust manifold heat shield to the vehicle.
Place the shield forward in vehicle where the generator mounts to allow installation of the exhaust manifold.
3. Install a NEW exhaust manifold gasket over the cylinder head studs.
4. Position the right exhaust manifold and gasket to the right cylinder head.

Caution: Refer to Fastener Caution (Fastener Caution).

5. Install the right exhaust manifold studs, nuts and NEW bolts.

* Tighten the exhaust manifold studs to 6 Nm (53 lb in).
* Tighten the exhaust manifold nuts to 25 Nm (18 lb ft).
* Tighten the exhaust manifold bolts to 25 Nm (18 lb ft).




6. Connect the Bank 1, Sensor 1 heated oxygen sensor electrical connector.
7. Install the exhaust manifold heat shield to the exhaust manifold. Install the exhaust manifold heat shield bolts and tighten to 10 Nm (89 lb in).
8. Install the bolts securing the engine wiring harness bracket to the right cylinder head and tighten to 45 Nm (33 lb ft).
9. If previously removed, install the right outer tie rod end to the steering knuckle. Refer to Steering Linkage Outer Tie Rod Replacement (Steering Linkage Outer Tie Rod Replacement).




10. With the aid of an assistant, install the exhaust system. Refer to Exhaust System Replacement (Service and Repair).




11. Install the generator and generator bolts (1-3). Refer to Generator Replacement (LLT) (Generator Replacement)Generator Replacement (LH2 /AWD) (Generator Replacement)Generator Replacement (LH2) (Generator Replacement)Generator Replacement (LC3) (Generator Replacement).