31 11 506 Lowering/raising front axle carrier (AWD)

Special tools required:

WARNING: Danger to life!
Secure engine in installation position . See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N55) or 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N54, N54T) to prevent it from falling down.

IMPORTANT: N47, N57: Danger of short-circuiting at starter!

Necessary preliminary tasks

Secure engine in installation position . See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N55) or 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N54, N54T) .
Remove underbody protective plate . See 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION or 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION (AWD)
Remove diesel enclosure on left and right.
Remove REINFORCEMENT COVER ON LEFT AND RIGHT .
Remove REINFORCEMENT PLATE .
Remove double joint from power steering gear
N52: Remove coolant pipe from front axle support
If necessary, disconnect plug connection on ride-height sensor and expose line up to engine carrier
M57T2: Disconnect vacuum line from electrically operated valve to engine mounts at T-piece

WARNING: Risk 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 2nd person helping on workshop jack.

Insert special tools 31 4 081 and 31 4 082 into corresponding mountings of special tool 00 2 040 .

Align special tool 00 2 040 to front axle support.

NOTE: Make sure when raising that the special tools 31 4 081 are correctly inserted into the corresponding recesses of the front axle support.

If necessary, drain special tool 33 3 274 .

Support front axle support by raising special tool 00 2 040 .

Fig 1: Supporting Front Axle

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!

Release screws (1, 2).

M57T2: Remove cooler return line from front axle support.

Lower front axle carrier.

Installation:

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

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

Tightening torque 31 10 1AZ .

Fig 2: Identifying Front Axle Support Screws

Courtesy of BMW OF NORTH AMERICA, INC.

After installation

Carry out STEERING ANGLE SENSOR ADJUSTMENT .