Removing and Installing/Replacing Exhaust Manifold

18 40 040 Removing and installing or replacing the exhaust manifold (N12, N16)







WARNING:
Risk of burning.
This repair work may only be carried out on an exhaust system which has cooled down.







Necessary preliminary work:
- Move front panel into working position.







NOTE:
The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove the control sensor.
Remove monitoring sensor.







Release screws.
Tightening torque 18 40 4AZ.
Remove upper heat shield (1).







Release screws.
Tightening torque 18 40 4AZ.
Remove lower heat shield (1).







Release screws.
Tightening torque 18 40 3AZ.







Unfasten clamp.
Tightening torque 18 31 5AZ.







Release nuts and remove exhaust manifold (1).

Installation note:
- Replace gasket and nuts.
- Clean sealing surfaces.
- Apply a thin coating of copper paste to bolt thread.
- Tightening torque 18 40 1AZ.







Reassemble the vehicle.