18 00 020 Removing and installing complete exhaust system (N54)

Only perform this work after engine has cooled down.

Risk of injury! 

Removal of the exhaust system must be carried out with the assistance of a second person.

Necessary preliminary tasks 

• Remove REINFORCEMENT PLATE ON REAR AXLE from rear axle
• Remove LEFT OR RIGHT TENSION STRUT on left and right from rear axle

Support exhaust system with special tool 31 2 220.

Fig 1: Supporting Exhaust System Using Special Tool (31 2 220)

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Unscrew nuts (1).

Tightening torque 18 31 1AZ .

Installation: 

Replace seals.

Replace nuts (1).

Fig 2: Identifying Nuts

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Unscrew screws (1) and (2).

Tightening torque 18 31 2AZ .

Remove retaining clip.

Fig 3: Identifying Screws

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

Release screw (1) on rubber mount.

Tightening torque 18 31 3AZ .

Fig 4: Identifying Screw

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Slacken nut (1).

Tightening torque 18 31 4AZ .

Fig 5: Identifying Slacken Nut

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Pull off vacuum hose (1).

Slacken nut (2).

Tightening torque 18 31 4AZ .

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

Fig 6: Identifying Slacken Nut And Vacuum Hose

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Installation: 

Check rubber mount for damage.

If necessary, replace damaged rubber mounts.

Check exhaust system for leaks.