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

WARNING: This page is about a different car, the 2018 BMW 330i xDrive and 2017 BMW 330i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

315 251
002 030
315 255
315 253

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 vehicle hoist.

IMPORTANT: Before lowering/removing 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.

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

Necessary preliminary tasks:

Secure engine INSTALLATION POSITION .

Disconnect the battery EARTH LEAD .
Remove the REINFORCEMENT PLATE .
Remove the STEERING SHAFT FROM STEERING GEAR .
Remove STEERING ASSEMBLY COVER. (N47)

Release screws (1) and (2) on the wheel arch panel on the rear left and right.

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Release screws (1) and remove cover (2) left and right.

(Left side: Release connector from outside temperature sensor.)

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Unlock and disconnect plug connection (1) and (2) on the steering gear.

Unclip cable routing on the front axle support (3) and fold the cable back towards the engine support.

Installation note:

Replace faulty cable clips.

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Unlock (3) holder (1).

Unfasten cable strap (2).

Installation note:

Replace faulty holders.

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Release screws (1) on left and right.

Tightening torque, refer to: 51 11 6AZ.

Unclip cable tie (2).

Installation note:

Replace faulty cable clips.

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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.

Insert special tools 31 5 253 in telescopic supports of other profile rail pair.

NOTE: In a profile rail pair, two profile rails are connected to one another by gearing.

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Align special tools 31 5 251, 31 5 253 and 31 5 255 to front axle support.

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

IMPORTANT: The center of gravity of the front axle support must be positioned centrally over the workshop jack.

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Release bolts (1-3).

Tightening torque, refer to: 31 10 1AZ .

Lower front axle support by no more than 10 cm.

Installation note:

Check threads for damage; if necessary, repair with Helicoil thread inserts. Refer to: NOTES ON REPAIRING THREADS

Note installation locations of screws.

Bolt (1) M12x45
Screw (2) M12x165 (foam seal between front axle support and body!)
Screw (3) M14x60

Tighten down first screws (1) and then screws (2, 3).

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Installation note:

Replace foam seal (1).

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