18 00 020 Removing and installing complete exhaust system (N63)

Special tools required: 

• 31 2 220

Necessary preliminary tasks: 

• E71 only: 

Remove rear bumper panel.

Support exhaust system with special tool 31 2 220 .

Fig 1: Supporting Exhaust System Using Tool

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Version 1: 

Refer toFig 2, illustration shows the left side. The procedure is identical for the right intake duct.

Unscrew nuts (1).

Replace self-locking nuts.

Tightening torque: 18 31 1AZ .

Fig 2: Identifying Nuts Of Exhaust System

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Version 2: 

Picture shows the right side, the procedure for the left side is identical.

Release clamp (1).

Tightening torque: 18 31 1AZ .

Fig 3: Identifying Clamp Bolts

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Release screw (1).

Tightening torque: 18 20 1AZ .

Fig 4: Identifying Screw

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Release screws (1).

Tightening torque: 18 20 2AZ .

Fig 5: Identifying Screws Of Exhaust System

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Release screw (1).

Tightening torque: 18 20 3AZ .

Fig 6: Identifying Screw Of Intake Duct

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Release screws (1).

Tightening torque: 18 20 4AZ .

Remove ground strap.

Detach hose (2) from vacuum unit and release at clamp (3).

Lower and remove exhaust system with assistance of a second person.

Fig 7: Identifying Clamp, Hose And Screws

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Installation note: 

Center both exhaust tailpipes (1) in line with recesses in rear apron.

Fig 8: Identifying Exhaust Tail Pipes

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Installation note: 

Check rubber mount for damage.

If necessary, replace damaged rubber mounts.

Check exhaust system for leak tightness.