31 11 506 Lowering/Raising Front Axle Support

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

Special tools required:





Warning!
High-voltage system - danger to life!





Warning!
The following points must be strictly observed prior to starting work:
^ Disconnect high-voltage system from power

^ Observe safety information for handling hybrid cars





Important!
Before lowering front axle support:
In order to avoid damage to lifting platform, perform weight compensation on vehicle.
Load spring strut domes with sand bags.





Necessary preliminary tasks:
^ Secure engine in installation position with special tool
^ Remove steering shaft lower section from steering column
^ Remove front wheels
^ Remove steering gear cover at top left and right.
^ Remove reinforcement plate.
^ Partially detach front left and right wheel arch covers (rear section) in rear area.
^ Remove lower wishbone on spring strut holder on left and right.
^ Remove anti-roll bar link on left and right on spring strut





Important!
Use special tool to avoid preliminary damage to ball joint in upper control arm and the necessary removal of the 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.





Engage 31 5 250 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.

Note:
In a profile rail pair two profile rails are connected to each by toothing.

Insert special tools 31 5 256 in telescopic supports of other profile rail pair.

Note:
The jacking points on the left side are shown.





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.





Release screws (1, 2).

Tightening torque 31 10 1AZ.

Installation:
Check threads for damage; if necessary, repair with Helicoil thread inserts.

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





Important!
Risk of damage!
Follow operations must be carried out during lowering:
- Remove heat exchanger from front axle support and tie up
- Unlock plug connection on electrical steering box and disconnect

Lower front axle support by max. 10 cm.





After installation:
^ Carry out steering angle sensor adjustment
^ Teach in end stop software