37 12 220 Removing and installing/replacing rear active stabilizer

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW 650i, 2009 BMW M6, 2009 BMW 650i, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

33 0 170 . See REAR AXLE - SPECIAL TOOLS -- 650I .

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Seal off pipe connections with plugs.

NOTE: A light film of grease on the anti-friction bearing in no way impairs the operational capability of the stabilizer.

In a warranty case you must always provide a fault memory printout, even where there is no fault memory entry, with the defective part.

Necessary preliminary tasks:

Remove rear wheel
E64: Remove rear cross strut by first removing exhaust system. See EXHAUST SYSTEM - REPAIR INSTRUCTIONS . Remove rear left and right heat shields. Release nuts and screws. Tightening torque 51 61 6AZ. See BODY EQUIPMENT - TIGHTENING TORQUES . Remove cross strut toward bottom.

Release screws (1).

Installation:

Insert screws (1).

Align pressure lines to rear axle carrier.

Tighten down screws (1).

Tightening torque 37 14 14AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES -- 650I .

Fig 1: Identifying Rear Axle Carrier Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: To prevent the stabilizer from being distorted, secure first the left retaining bracket (without elongated holes) and then the right retaining bracket (with elongated holes) to the front axle carrier.

Release nuts (1) on both sides.

Remove stabilizer from rear axle carrier.

Check anti-friction bearing on both sides for damage; if necessary, replace stabilizer (observe note at start of repair instruction).

Installation:

Check rubber mount on both sides , replace if necessary. See STABILIZER BAR RUBBER MOUNTS .

Replace self-locking nut.

Tightening torque 33 55 3AZ. See REAR AXLE - TIGHTENING TORQUES .

Fig 2: Identifying Rear Axle Carrier Nut

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage! Pressure lines must not have any contact with the stabilizer (minimum distance 5 mm)!

Release nuts (1, 2).

Tightening torque 37 14 18AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES -- 650I .

Disconnect pressure lines and seal off with seal plugs.

Remove stabilizer links on both sides from stabilizer. See 33 55 040 REPLACING STABILIZER LINKS FOR STABILIZER .

Remove stabilizer sideways.

Installation:

Pressure lines are protected against being mixed up by different thread diameters on the oscillating motor connection.

Fig 3: Identifying Stabilizer Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Assembly: Pressure lines to oscillating motor

NOTE: Before the stabilizer is installed, the pressure lines must be aligned to the oscillating motor and secured using banjo bolts.

Installation:

Screw nuts into stabilizer, do not tighten down
Attach special tool 33 0 170 to pressure lines (the side of the special tool illustrated must point in the direction of the oscillating motor)
Tighten down nuts
Tightening torque 37 14 18AZ. See INTEGRATED SUSPENSION SYSTEMS - TIGHTENING TORQUES -- 650I .
Remove special tool

Fig 4: Identifying Special Tool (33 0 170)
Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Remove rubber mount on both sides from stabilizer. See STABILIZER BAR RUBBER MOUNTS .

After installation:

Fill and bleed hydraulic system See 37 10 001 Initial operation with test run of Dynamic Drive .
Check pipe connections for leaks
If necessary, carry out initial Dynamic Drive operation . See 37 10 001 Initial operation with test run of Dynamic Drive .