Exhaust Manifold Removal - Right Side W/O RPO NC1 or NF7

1. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.




Caution: The stud must be reinstalled in the original location. The stud may remain attached to the nut when initially removed during exhaust manifold removal. In order to prevent exhaust leakage between the exhaust manifold and cylinder head the nut and stud combination must be reinstalled during exhaust manifold installation in the original location.

2. Remove the right exhaust manifold retaining nuts (3).

Note: DO NOT reuse the exhaust manifold gasket.

3. Remove the exhaust manifold and the gasket (1).



4. If equipped, remove the right coolant heater (1) as follows:

4.1.	Remove the coolant heater retaining bolt.

4.2.	Remove coolant heater from the cylinder block.

Exhaust Manifold Removal - Right Side With RPO NC1 or NF7

1. Remove the secondary air injection (AIR) valve pipe nuts from the exhaust manifold.
2. Remove the AIR valve bolts from the mounting bracket.
3. Remove the AIR valve.

Note: DO NOT reuse the AIR valve pipe gasket.

4. Remove and discard the AIR valve pipe gasket.



5. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.




Caution: The stud must be reinstalled in the original location. The stud may remain attached to the nut when initially removed during exhaust manifold removal. In order to prevent exhaust leakage between the exhaust manifold and cylinder head the nut and stud combination must be reinstalled during exhaust manifold installation in the original location.

6. Remove the right exhaust manifold retaining nuts (3).

Note: DO NOT reuse the exhaust manifold gasket.

7. Remove the exhaust manifold and the gasket (1).



8. If equipped, remove the right coolant heater (1) as follows:

8.1.	Remove the coolant heater retaining bolt.

8.2.	Remove coolant heater from the cylinder block.