BMW 7 Series: Active Rear Axle Kinematics
REMOVING AND INSTALLING/RENEWING INTEGRAL ACTIVE STEERING
Necessary preliminary tasks
- LOWER REAR AXLE SUPPORT
- Remove BOTH TOE ARMS
IMPORTANT: Screws (1) must not be released during removal!
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Fig. 118: Identifying Screws
Unlock and disconnect plug connections (1) from steering.
Release screw (2) and remove earth cable.
Tightening torque 33 34 4AZ.
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Fig. 119: Identifying Plug Connections And Screw
Release screw (1).
Tightening torque 33 34 2AZ.
Release screw (2).
Tightening torque 33 34 1AZ.
Installation: Observe assembly sequence to prevent integral active steering from jamming during installation.
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Fig. 120: Identifying Screw
Release bolts (1) and remove integral active front steering towards bottom.
Tightening torque 33 34 3AZ.
Installation: Observe assembly sequence to prevent integral active steering from jamming during installation.
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Fig. 121: Identifying Bolts
IMPORTANT: Observe assembly sequence.
Tighten bolts of integral active steering on rear axle carrier, see picture.
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Fig. 122: Identifying Integral Active Steering Bolts
After installation
- Carry out startup of integral active steering with aid of BMW diagnosis system (see Service function/Deflection test).
- Perform chassis/wheel alignment check.
REMOVING AND INSTALLING/REPLACING CONTROL UNIT FOR REAR AXLE SLIP CONTROL
IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION).
Necessary preliminary tasks
- REMOVE BATTERY
Unlock plug connection (1) on control unit (2) and disconnect.
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Fig. 123: Identifying Plug Connection And Control Unit
Release nut (1) and remove control unit (2).
Tightening torque 33 34 5AZ.
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Fig. 124: Identifying Nut And Control Unit
After installation
- Replacement only: Carry out PROGRAMMING/ENCODING
READ NEXT:
Detaching Wheel Bearing Inner Ring From Drive Flange (Drive Flange
Removed)
Notes
IMPORTANT:
Special tool 33 4 409 must not be removed!
Insert special tool 33 4 408 into special tool 33 4 401.
Fig. 125: Positioning Special Tools (33 4 408), (33 4 401) And (33 4 409)
Posi
Replacing Drive Flange On Left/Right Rear Axle Shaft
Necessary preliminary work
Remove REAR WHEEL.
IMPORTANT: Expand anti-twist lock sufficiently to avoid damaging thread
when releasing
collar nut.
Activate parking brake and release collar nut.
Tig
SEE MORE:
Replacing Right Control Sensor (N63)
Notes
WARNING: Risk of burning!
Only perform this work after engine has cooled down.
Necessary preliminary work
Check function of DME control unit
Switch off ignition
Remove AIR FILTER HOUSING
Unlock plug connection and detach.
Unclip control sensor cable from holder.
Release control sensor w
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
