31 11 506 Lowering/raising front axle support (universal lifter)

Special tools required: 

• 00 2 030
• 31 5 251
• 31 5 255
• 31 5 256
• 33 5 206

Necessary preliminary tasks: 

• Secure engine in installation. See SECURING ENGINE IN INSTALLATION POSITION (N55) or SECURING ENGINE IN INSTALLATION POSITION (N63) .
• Remove FRONT WHEELS
• Remove underbody protection at FRONT and REAR .
• Remove STEERING GEAR COVER AT TOP LEFT AND RIGHT .
• Remove ANTI-ROLL BAR LINK FROM ANTI-ROLL BAR 
• Partly detach front left and right wheel arch covers (rear section) in rear area.
• Remove STEERING SHAFT FROM STEERING BOX
• Remove HYDRAULIC LINES FROM VALVE BLOCK (only on version with Dynamic Drive)
• Disconnect plug connection and expose connecting line up to hydraulic steering gear (only on version with active front steering)

Release screws (1).

Remove front left/right wheel arch cover (2) from bumper trim.

Installation note: 

Make sure wheel arch cover is correctly positioned.

Fig 1: Identifying Wheel Arch Cover And Screws

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Release screws (1).

Remove brake air duct (2).

Fig 2: Identifying Brake Air Duct And Screws

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Release screws (1).

Release deformation element (3) from front axle support (2).

Fig 3: Identifying Deformation Element, Front Axle Support, And Screws

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Release bolt (1) and remove holder (2) from oil line

Fig 4: Identifying Oil Line Holder And Bolt

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Secure swivel bearing (1) with special tool 33 5 206 on spring strut.

Fig 5: Securing Swivel Bearing Using Special Tool 33 5 206 On Spring Strut

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Release nut (1) and remove screw.

Remove spring strut from control arm (2).

Tightening torque 31 12 7AZ .

Fig 6: Identifying Control Arm And Nut

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Engage 31 5 251 with a 2nd person helping completely on workshop jack 00 2 030 .

Insert special tools 31 5 255 in telescopic supports of a profile rail pair.

Insert special tools 31 5 256 in telescopic supports of other profile rail pair.

Fig 7: Inserting Special Tools 31 5 256 In Telescopic Supports Of Other Profile Rail Pair

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Fig 8: Identifying Left Side Jacking Points

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Align special tools 31 5 255 and 31 5 256 to front axle support.

Support front axle support by operating workshop jack 00 2 030 .

Fig 9: Aligning Special Tools 31 5 255 And 31 5 256 To Front Axle Support

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Release screws (1, 2).

Tightening torque 31 10 1AZ .

Installation note: 

Check threads for damage; if necessary, repair with HELICOIL THREAD INSERTS .

1. M12x1.5x65 screw
2. M12x1.5x95 screw
   Fig 10: Identifying Screws

   Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down first screws (1) and then screws (2).

Lower front axle support by max. 10 cm.

After installation 

• FILL AND BLEED HYDRAULIC SYSTEM
• Check line connections for leaks
• DYNAMIC DRIVE START-UP