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

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IMPORTANT: Before lowering front axle support:
Observe safety information on raising the vehicle.
In order to avoid damage to vehicle hoist, perform weight compensation on vehicle.
Load spring strut domes with sand bags.

WARNING: Secure engine in installation position with special tool to prevent it from falling down.

IMPORTANT: N57: Risk of shorting the starter motor!

Necessary preliminary tasks:

Secure engine in installation position
Remove FRONT WHEELS
Remove underbody protection at FRONT and REAR .
Remove STEERING BOX 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 Front Left/Right 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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Graphic shows: F01, F02

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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only: F01, F02

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)

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Release nut (1) and remove screw.

Remove spring strut from wishbone (2).

Tightening torque: see 7AZ in 31 12 TRAILING ARMS AND STRUTS

Fig 6: Identifying Wishbone And Nut

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Engage special tool 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.

NOTE: In a profile rail pair two profile rails are connected to each by gearing.

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

Fig 7: Identifying Special Tools (31 5 251, 00 2 030, 31 5 255, 31 5 256)

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NOTE: The jacking points (1) on the left side are shown.

Fig 8: Identifying Vehicle 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: Supporting Front Axle Support Using Jack (00 2 030)

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IMPORTANT: Pay attention to hydraulic steering hoses and lines when lowering and raising. Hoses/lines must not be kinked/tensioned/bent!

Release screws (1, 2).

Tightening torque: see 1AZ in 31 10 FRONT AXLE SUSPENSION

Installation note:

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

= M12x1.5x65 screw
= M12x1.5x95 screw

Fig 10: Identifying Front Axle Support Screws
Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Risk of damage!

Lower front axle support by max. 10 cm.