75. Exhaust Manifold Cleaning and Inspection - Left Side

Exhaust Manifold Cleaning and Inspection - Left

Cleaning Procedure
1. Clean the exhaust manifold in solvent.

Caution: Refer to Safety Glasses Caution in Service Precautions.

2. Dry the exhaust manifold with compressed air.

Inspection Procedure





1. Inspect the exhaust manifold for the following:
^ Damage to the exhaust crossover sealing area (1)
^ Damage or restrictions within the exhaust passages (2)
^ Damage to the gasket sealing surfaces (3)





2. Inspect the exhaust manifold for the following:
^ Damage to the exhaust manifold mounting holes (1)
^ Damage or broken welds (2)
^ Damage or excessive corrosion to the exhaust manifold exterior (3)
^ Damage to the oxygen sensor threaded hole (4)

3. Repair or replace the exhaust manifold and/or components as necessary.





4. Measure the alignment or surface flatness of the exhaust manifold flanges, using a straight edge and a feeler gage. Exhaust manifold surface flatness must not exceed 0.254 mm (0.010 inch).
5. If the surface flatness is not within specifications, the exhaust manifold is warped and must be replaced.