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

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Before lowering front axle support:

Observe SAFETY INFORMATION for raising the vehicle.

In order to avoid damage to vehicle hoist, perform weight compensation on vehicle.

Load spring strut domes with sand bags.

Necessary preliminary work:

WARNING:

Secure engine in INSTALLATION POSITION with special tool to prevent it from falling down.

Remove FRONT WHEELS
Remove underbody protection at front and rear. See REMOVING FRONT UNDERBODY PROTECTION and REMOVING REAR UNDERBODY PROTECTION .
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 With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove brake air duct (2).

Fig 2: Identifying Brake Air Duct With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Identifying Oil Line Holder With Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and remove screw. Remove spring strut from control arm (2).

Tightening torque 31 12 7AZ .

Fig 6: Identifying Control Arm With Nut

Courtesy of BMW OF NORTH AMERICA, INC.

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 5 255, 31 5 256, 31 5 251 And 00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 8: Identifying Jacking Points

Courtesy of BMW OF NORTH AMERICA, INC.

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 Using Jack (00 2 030)

Courtesy of BMW OF NORTH AMERICA, INC.

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 31 10 1AZ .

Installation note:

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

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

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

Fig 10: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!

Lower front axle support by max. 10 cm.