18 32 005 Removing and installing/replacing the catalytic converter (N14, N18)

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

Necessary preliminary work:

NOTE:

The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.

Release screw and remove holder (1).

Fig 1: Identifying Holder Screw

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Release screws and remove upper heat shield (1).

Tightening torque: 4 Nm.

Fig 2: Identifying Upper Heat Shield Screws

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Release screws and remove lower heat shield (1).

Tightening torque: 4 Nm.

Fig 3: Identifying Lower Heat Shield Screws

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Unscrew nuts.

Installation note:

Replace nuts.

Tightening torque 18 31 3AZ .

Unscrew nuts (1).

Tightening torque 18 31 4AZ .

Fig 4: Identifying Nuts

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Loosen screws and nut.

Remove exhaust manifold (1).

Installation note:

Fig 5: Locating Exhaust Manifold Screws And Nut

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