Disconnect the oxygen sensor connect.
Remove the exhaust manifold heat protector.
Remove the exhaust manifold assembly from the cylinder head.
Remove the exhaust manifold gasket.
Check for damage or cracking.
Check for damage or cracking of welding between exhaust manifold and converter.
Install the exhaust manifold in the reverse order of removal.
Replace the exhaust manifold gasket and lock nut when reassembling.