31 11 506 Lowering/Raising Front Axle Carrier

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

See .

WARNING: Danger to life!
SECURE ENGINE IN INSTALLATION POSITION to prevent it from falling down.

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

Necessary preliminary tasks:

SECURE ENGINE IN INSTALLATION POSITION
Remove REINFORCEMENT PLATE
If necessary, remove steering gear cover on both sides
If necessary, remove wheel suspension cover on both sides
Remove LOWER STEERING SPINDLE FROM POWER STEERING GEAR
If necessary, disconnect plug connection on EH converter and expose line up to engine carrier
If necessary, disconnect plug connection on ride-height sensor and expose line up to engine carrier
If necessary, unclip vacuum line for engine mount on engine support arm

Version with Dynamic Drive:

Draw off and dispose off hydraulic fluid from fluid reservoir.

Remove BOTTOM RIGHT WHEEL ARCH TRIM.

Release nut (1) for Dynamic Drive return line.

Tightening torque 37 14 21AZ. . See 14 ELECTRICAL COMPONENTS .

Release nut (2) for Dynamic Drive pressure line.

Tightening torque 37 14 13AZ. . See 14 ELECTRICAL COMPONENTS .

Release nuts (3) for pressure lines to front axle oscillating motor.

Tightening torque 37 14 13AZ. . See 14 ELECTRICAL COMPONENTS .

Fig 1: Identifying Pressure Lines And Return Line Nut

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Version with active steering:

Disconnect plug connections (1, 2).

Expose wiring harness (3) up to front axle carrier.

Fig 2: Identifying Plug Connections And Wiring Harness

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Danger of injury!

Failure to comply with the following instructions may result in the vehicle slipping off the lifting platform and critically injuring other persons.

When supporting components, make sure that

the vehicle can no longer be raised or lowered
the vehicle does not lift off the locating plates on the lifting platform

If necessary, position special tool 00 2 040 with a 2nd person helping on workshop jack 00 2 030.

Insert special tool 31 4 012 into corresponding receptacles of special tool 00 2 040.

Align special tool 00 2 040 to front axle carrier.

NOTE: Make sure when raising that the special tools 31 4 012 are correctly inserted in the rear recesses on the front axle carrier.

Support front axle carrier in rear area by raising special tool 00 2 040.

Position special tool 33 3 274 on floor jack mounting.

Fig 3: Identifying Special Tools (31 4 012, 00 2 040, 00 2 030, 33 3 274)

Courtesy of BMW OF NORTH AMERICA, INC.

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

When lowering and raising, make sure the cover for the relevant tension strut rubber mount is free to move.

Release screws (1, 2).

Installation:

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

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

Tightening torque 31 10 1AZ. . See 31 10 FRONT AXLE SUSPENSION for specs.

Fig 4: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!

The following operation must be carried out during lowering:

N54 with automatic transmission: Release screws (1) and remove bracket (2) for transmission oil cooler lines from front axle carrier

Lower front axle carrier 100 mm.

Fig 5: Identifying Bracket And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Version with Dynamic Drive:
- Fill and bleed hydraulic system
- Check pipe connections for leaks
Carry out STEERING ANGLE SENSOR ADJUSTMENT /ADJUSTMENT FOR ACTIVE FRONT STEERING .
Carry out INITIAL DYNAMIC DRIVE OPERATION .