18 40 050 Removing and installing/replacing front exhaust manifold (N52T)

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Necessary preliminary work:

Remove complete EXHAUST SYSTEM .
Remove right ENGINE SUPPORT ARM .

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

Remove CONTROL SENSOR from cylinders 1 to 3.

Remove MONITORING SENSOR from cylinders 1 to 3.

Unscrew nuts.

Remove exhaust manifold (1).

Installation note:

Clean sealing surfaces and replace seals.

Replace nuts.

Tightening torque: 18 40 1AZ .

Fig 1: Locating Exhaust Manifold Nuts

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Assemble engine.

Check exhaust system for leak tightness.