18 00 020 Removing and installing complete exhaust system (N52)

Special tools required: 

• 31 2 220

Danger of injury! 

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

Necessary preliminary tasks: 

• F11 only: 

Remove left trailing link.

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 .

Remove connecting plate (2).

Replace self-locking nut.

Replace gaskets.

Fig 2: Identifying Connecting Plate And Nuts

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Release screws (1) and (2).

Tightening torque 18 20 1AZ .

Fig 3: Identifying Exhaust System Screws

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

Slacken nut (1).

Tightening torque 18 20 3AZ .

Fig 4: Identifying Exhaust System Nut

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Release screws (1).

Tightening torque 18 31 2AZ .

Only if auxiliary heating fitted. Release screw (2) on metering pump.

Tightening torque 18 31 3AZ .

Release screws (3) on underbody panelling.

Remove reinforcement plate (4).

Fig 5: Identifying Reinforcement Plate, Underbody Panelling And Metering Pump Screw

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Slacken nut (1).

Tightening torque 18 20 4AZ .

Fig 6: Identifying Bracket Mounting Nut

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Pull off vacuum hose (1).

Slacken nut (2).

Tightening torque 18 20 5AZ .

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

Fig 7: Identifying Vacuum Hose With Nut

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Installation note: 

Align tail pipes (1) of rear silencer in each case centrally to openings in rear apron.

Fig 8: Identifying Tail Pipes Of Rear Muffler

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Installation note: 

Check rubber mount for damage.

If necessary, replace damaged rubber mounts.

Check exhaust system for leak tightness.