31 11 506 Lowering/raising front axle support (universal lifter) (all-wheel drive vehicle) (X6 xDrive 35i, X6 xDrive 50i)

Special tools required:

00 2 030
31 4 170
31 5 250
31 5 255
31 5 256

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: SECURING ENGINE IN INSTALLATION POSITION WITH SPECIAL TOOL to prevent it from falling down.
Before lowering the front axle support, it is essential that the STEERING SHAFT on the steering box is unfastened!
If this is not carried out, the bulkhead steering shaft bearing will be damaged!

Necessary preliminary tasks:

Disconnect BATTERY NEGATIVE LEAD .
Remove microfilter housing cover. Refer to 64 31 101 REMOVING AND INSTALLING/REPLACING LEFT MICROFILTER HOUSING COVER REP-REP-RAF1564-6431101 - V.3 (X6 2015-2019) and 64 31 106 REMOVING AND INSTALLING/REPLACING RIGHT MICROFILTER HOUSING COVER REP-REP-RAF1564-6431106 - V.3 (X6 2015-2019) on left and right.
Only N55, N63: remove FAN COWL .
Release STEERING SHAFT ON STEERING GEAR .
Secure ENGINE IN INSTALLATION POSITION .
Remove FRONT WHEELS .
Remove underbody protection at front and rear. Refer to 51 47 490 REMOVING AND INSTALLING/REPLACING UNDERBODY PROTECTION (FRONT) REP-REP-RAF1651-5147490 - V.2 (X6 2015-2019) and 51 47 491 REMOVING REFITTING/REPLACING REAR ENGINE UNDERCOVER REP-REP-RAF1651-5147491 - V.2 (X6 2015-2019) .
Remove STEERING BOX COVER AT TOP LEFT AND RIGHT .
ADDITIONAL WORK ON VEHICLES WITH ACTIVE STEERING AND DYNAMIC DRIVE .
ADDITIONAL WORK WITH ELECTRICAL STEERING AND DYNAMIC DRIVE .

N55, N63 only:

Release screws (1) from transmission oil cooler (2).

N63: Tightening torque 17 22 10AZ .

N55: Tightening torque 17 22 4AZ .

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Release 3 screws (1) on left underbody panelling (2).

Installation note:

Risk of damage!

Risk of trapping and damage to underbody panelling (3).

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IMPORTANT: Use special tool to avoid preliminary damage to ball joint in upper wishbone and the associated necessary removal of swivel bearing!

Press plug on left and right out of spring strut dome.

Secure swivel bearing (1) on left and right with special tool 31 4 170 in installation position.

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Slacken nut (1).

Tightening torque 31 35 2AZ .

Release anti-roll bar link (2) from anti-roll bar.

Installation note:

Replace nut (1).

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Disconnect connector (1).

Release connector from holder for front bottom left wheel arch cover (2).

Release cable from front axle support.

NOTE: For a better general view, the bottom left wheel arch cover is disassembled.

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Release screw (1).

Release cable channel (2) from front axle support.

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Release connectors (2 and 3) from EPS steering gear.

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Remove LOWER WISHBONE FROM SPRING STRUT HOLDER .

Engage special tool 31 5 250 with a second 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 5 256 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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Mounting point (1) for special tool 31 5 250 on right hand side.

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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 .

IMPORTANT: The center of gravity of the front axle must lie in the middle above the workshop jack!

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Release screws (1, 2).

Tightening torque 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 .

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

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IMPORTANT: Steering gear and output shaft are not to come into contact!

When lowering, make sure there is enough distance (A) between steering gear and output shaft.

Move front axle towards front of vehicle with special tool 00 2 030 when lowering.

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IMPORTANT: Risk of damage!
Follow operations must be carried out during lowering:

Remove all hydraulic lines on front axle support or anti-roll bar retaining bracket and tie up.
Version with active steering: Disconnect plug connection and expose connecting line up to hydraulic steering gear.