BMW 7 Series: Exhaust System, Complete
REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63)
Notes
WARNING: Scalding hazard! 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 rear UNDERBODY PROTECTION
- F03 Only: Remove underbody protection on left and right
Support exhaust system with special tool 31 2 220.
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Fig. 1: Supporting Exhaust System Using Special Tool 31 2 220
Picture shows the left side, the procedure for the right side is identical.
Unscrew nuts (1).
Tightening torque 18 31 1AZ.
Replace self-locking nuts.
Replace seals.
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Fig. 2: Identifying Nuts Of Exhaust System
Picture shows the left side, the procedure for the right side is identical.
Unscrew nuts (1).
Tightening torque 18 20 1AZ.
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Fig. 3: Identifying Nuts
Release screws (1).
Tightening torque 18 20 6AZ.
Only when independent heating is fitted: release screw (2) on metering pump.
Tightening torque 18 20 7AZ.
Release screws (3) on underbody panels.
Remove reinforcement plate (4).
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Fig. 4: Identifying Screw On Metering Pump, Screw On Underbody Panels And
Reinforcement Plate
Picture shows the left side, the procedure for the right side is identical.
Slacken nut (1).
Tightening torque 18 20 4AZ.
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Fig. 5: Identifying Exhaust System Nut
Picture shows the left side, the procedure for the right side is identical.
Unscrew nuts (1).
Tightening torque 18 20 5AZ.
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Fig. 6: Identifying Unscrew Nuts
Picture shows the left side, the procedure for the right side is identical.
Slacken nut (1).
Tightening torque 18 20 5AZ.
Detach hose (2) on vacuum unit.
Lower and remove exhaust system with assistance of a second person.
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Fig. 7: Identifying Nut And Hose On Vacuum Unit
Installation: Check rubber mount for damage.
If necessary, replace damaged rubber mounts.
Check exhaust system for leaks.
REMOVING AND INSTALLING/REPLACING EXHAUST PIPE TRIM IN BUMPER COVER ON LEFT OR RIGHT
Necessary preliminary work
- Remove COVER ON REAR BUMPER TRIM
The following graphic may differ, depending on the engine specification.
Release screws (1).
Remove exhaust pipe cover (2).
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Fig. 8: Identifying Exhaust Pipe Cover With Screws
READ NEXT:
Replacing Center Muffler (N63)
Notes
WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.
Support center silencer with special tool 31 2 220 and a suitable universal
lifter.
Fig. 9: Identifying
Replacing Front Silencer (N63)
Notes
WARNING: Risk of burns! Only perform these tasks after exhaust system
has cooled down.
Necessary preliminary work
Remove rear UNDERBODY PROTECTION
F03 Only:
Remove underbody protection on l
SEE MORE:
Ignition Wires, Spark Plugs
REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
Switch off ignition.
Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
Unscrew spark plugs with special tool 12 1 220 and extensi
Chassis components
Vehicle features and
options
This chapter describes all standard, country-specific
and optional features offered with the series.
It also describes features and functions that are
not necessarily available in your vehicle, e.g., due
to the selected options or country versions. This
also applies to
