Lowering/raising front axle support (universal lifter)

Special tools required:

31 5 251
00 2 030
31 5 255
31 5 253

WARNING: High-voltage system - danger to life

Observe SAFETY INFORMATION for working with electric vehicles.

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: Danger to life!
SECURING ENGINE IN INSTALLATION POSITION WITH SPECIAL TOOL to prevent it from falling down.

Necessary preliminary tasks:

Secure engine in INSTALLATION POSITION .
Disconnect BATTERY .
Remove underbody protection at the front and rear. Refer to REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION and REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION .
Remove Steering Shaft From Steering Gear. Refer to REMOVING AND INSTALLING/REPLACING LOWER SECTION OF STEERING SHAFT .
Release WHEEL ARCH PANEL in rear area.

Release screws (1).

Remove cover (2). (Right-hand side is identical).

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Loosen screw (1).

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Unclip the holder (1) for coolant hose (2).

Installation note:

Replace defective holder if necessary.

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Unfasten plug connection (1) and disconnect.

Unclip holder (2) on front axle support.

Lay line (3) to one side.

Installation note:

Replace defective holder if necessary.

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Release screws (1) from transmission oil cooler.

Release nut (2) from transmission oil cooler.

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

Unclip cable routing from front axle support and fold back cable toward engine support.

Installation note:

If necessary, replace faulty cable holders.

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Release high-voltage cable with holder (1) from left front axle support.

Installation note:

Replace defective holder if necessary.

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Loosen screw (1).

Remove holder (2) for mounting protection.

Tightening torque 31 10 10AZ .

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Loosen screw (1).

Remove holder (2) for mounting protection.

Tightening torque 31 10 10AZ .

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Release screws (1) on left and right.

Tightening torque 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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NOTE: The jacking points on the left side are shown.

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 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 .

Note installation locations of screws.

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

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

Installation note:

Replace foam seal (1).

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