31 11 001 Replacing Front Axle Carrier

31 11 001 Replacing Front Axle Support







IMPORTANT:
Before removing front axle support:
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.







Necessary preliminary tasks:
- Secure engine in installation position.
- Disconnect battery earth lead.
- Remove both front wheels.
- Remove front anti-roll bar.
- If necessary, remove radiator seal.
- If necessary, remove steering box cover on left and right.
- Remove E90, E91, E92: stiffening strut.
- E93: Remove V-strut.
- E93: Remove assembly mounting.
- Remove bottom of steering shaft from steering box.
- If necessary, disconnect plug connection from ride height sensor.
- If necessary, disconnect vacuum line from electrically operated valve to engine mounts at T-piece.
- Remove both trailing links from front axle support.
- Remove both wishbones from front axle support.
- Remove both track rods on steering box.







Version with active steering:

NOTE: Front axle support is lowered without hydraulic steering gear.

Disconnect plug connections (1) and unclip connecting line (2) from front axle support.







Version with active steering:
Disconnect plug connection (1) from power steering pump and expose connecting line up to front axle support.
Disconnect plug connections (2) on hydraulic steering gear.
Build date up to 03/2007: Disconnect plug connection on cumulative steering angle sensor.







Lower front axle support a little.
If necessary, remove heat shield above the right-hand gaiter of the track rod.
Remove steering box from front axle support and tie up.
Lower front axle support.







Remove heat shield(s) from front axle support.
If necessary, remove wiring harness (1) for active steering from front axle support.
Remove both engine mounts (2).
M57T2: Unscrew screws and remove both support brackets (3).
Tightening torque 31 10 4AZ.







If necessary, remove vacuum line (1).
If necessary, unscrew screws (2) and remove reinforcement plates (2).

Installation note:
Use previous front axle support as a template for modifying or replacing small parts.
Tightening torque 31 10 5AZ.







After installation:
- Carry out wheel alignment procedure.