Lower/raise front axle support

Special tools required:

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

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.

Attention!

Before lowering/removing front axle support:

Observe the 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!

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

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: 19 Nm.

Unclip cable tie (2).

Installation note:

Replace faulty cable clips.

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Insert special tool 31 5 251 with the helper fully onto the universal jack 00 2 030.

Insert special tools 31 5 255 in the telescopic supports of a profile rail pair.

Insert special tools 31 5 253 in telescopic supports of the 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 with the front axle support.

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

CAUTION: 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 .

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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