37 11 010 Removing and installing/replacing front active stabilizer

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

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.
When returning parts: send in stabilizer complete with both vent valves mounted on the oscillating motor incl. the banjo bolts.

WARNING: Danger of poisoning if oil is ingested/absorbed through the skin!
Risk of injury if oil comes into contact with eyes and skin!

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

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

Necessary preliminary tasks:

Remove front assembly underside protection . See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT UNDERBODY PROTECTION .
Remove stabilizer link on both sides from stabilizer . See 31 35 005 REMOVING AND INSTALLING/REPLACING PUSH ROD (STABILIZER LINK) FOR LEFT/RIGHT STABILIZER .

IMPORTANT: Risk of damage!
Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Close off pipe connections with plugs.
Pressure lines must not have any contact with the stabilizer (minimum distance 5 mm)!

Do not release pressure relief valves (1) and (2). Pull vent line (3) out of Y-piece at marked position (see arrow). Vent line can be removed by sliding back the protruding collar on the Y-piece.

Installation: Replace distributor hose with Y-piece.

Fig 1: Identifying Banjo Bolts And Vent Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Mark installation position of pressure lines to oscillating motor.

Release banjo bolts (1) and remove pressure lines from oscillating motor.

Installation:

Carry over identification to new component.

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

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

Fig 2: Slacken Banjo Bolts And Detach Vent Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

When installing a new stabilizer: remove plugs from pressure relief valves (1).

IMPORTANT: Slide in yellow distributor line in forward direction of travel and black distributor line in rearward direction of travel.

Slide distributor lines (2) into pressure relief valves (1) up to second marking (M).

Fig 3: Pushing Distribution Hose Into Vent Valves

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.

If necessary, remove holder with hydraulic line(s) from retaining bracket.

Release screw (1) and nut (2) on both retaining brackets.

Remove stabilizer from front axle carrier.

Check roller bearing on both sides for damage, replace stabilizer if necessary (slight discharge of grease OK).

Keep contact face for rubber mount on anti-friction bearing clean and free from oil and grease.

Installation:

Check both rubber mounts for damage , replace if necessary. See 31 35 021 REPLACING RUBBER MOUNTS OF STABILIZER RETAINING FIXTURE ON FRONT AXLE CARRIER .

Replace self-locking nut.

Tightening torque 31 35 1AZ. See FRONT AXLE - TIGHTENING TORQUES .

Fig 4: Identifying Retaining Brackets, Bolts And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Remove both rubber mounts from stabilizer . See 31 35 021 REPLACING RUBBER MOUNTS OF STABILIZER RETAINING FIXTURE ON FRONT AXLE CARRIER .

After installation:

Fill and bleed hydraulic system . See 32 13 006 BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE) .
Check pipe connections for leaks
Carry out initial Dynamic Drive operation.