Completely remove and install the rear axle support (AWD)
Special tools required:
- 31 5 251
- 00 2 030
- 31 5 255
- 31 5 253
Failure to comply with the following instructions may result in the vehicle slipping off the vehicle hoist and critically injuring other persons.
Load the trunk with a minimum of 100 kg before lowering/removing the rear axle support. This prevents the vehicle from tilting or sliding off the vehicle hoist!
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 rear axle support:
Observe SAFETY INSTRUCTIONS for raising the vehicle.
In order to avoid damage to vehicle hoist, perform weight compensation on vehicle.
Preliminary work needed:
- Remove rear WHEELS .
- Remove the left and right TRAILING ARM COVERS .
- Remove REAR AXLE DIFFERENTIAL .
- Remove TANK COVER on left and right.
- Remove BOTH REAR COIL SPRINGS .NOTE: Screw the shock absorbers onto the trailing arm after removal of the coil springs.
Removal:
Press brake pedal down to floor and secure with pedal support.
This prevents brake fluid from emerging from the expansion tank and air from entering the system when the brake lines are opened.
Unlock and disconnect the connector (1).
Release cable (3) from cable clip (2).
Only for rear ride height sensor:
Disconnect connector (1).
Release hollow nut (2).
Disconnect brake hose (1) on left and right from the brake line.
Disconnect left and right plug connections (1) of the pulse sensor.
- To do so, partly release the wheel arch panels.
Disengage cable from holders (2).
Right side only:
Detach the brake pad wear sensor from the holders (2) as an additional measure.
Disconnect plug connection (1).
Support rear axle support (1) with workshop jack (2).
Release screws (1) from rear axle support (2).
Lower rear axle support.
Lower the universal jack and put it away.
Completely plug in the special tool 31 5 251 with a helper on the operating workshop 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 other profile rail pair.
Align special tools 31 5 251, 31 5 253 and 31 5 255 with axle support.
Operate the universal jack 00 2 030 to support the rear axle support.
Secure the trailing (rear axle support special tool 31 5 using luggage strap
Release left and right shock absorber (2) from trailing arm by unscrewing screw (1).
Release screws (2) on left and right trailing arm bearing support (1) on the body.
Lower rear axle support.
Installation:
Position rear axle support on vehicle.
Tighten screws (2) on left and right trailing arm bearing support (1).
Replace screws.
Tightening torque 33 32 5AZ .
Position left and right shock absorber (2) on trailing arm.
Tighten screw (1).
Tightening torque 33 52 1AZ .
Release luggage straps.
Lower the universal jack 00 2 030 with the special tool 31 5 251 and put it aside.
Lift rear axle support (1) with universal/workshop jack (2).
Tighten screws (1) on rear axle support (2).
Tightening torque 33 31 1AZ .
Attach brake pad wear sensor in the holders (2).
Connect plug connection (1).
Attach brake pad wear sensor in the holders (2).
Connect plug connection (1).
Align brake hose (1).
Tighten down hollow nut (2).
Tightening torque 34 32 1AZ .
Only for rear ride height sensor:
Insert connector (1) on ride height sensor.
Insert connector (1) and lock.
Secure cable (3) with cable clip (2).
Release pedal support.
Required follow-up work:
- Install both rear COIL SPRINGS .
- Install TANK COVER on left and right.
- Install the TRAILING ARM COVER on the left and right.
- Install the REAR AXLE DIFFERENTIAL .
- Install rear WHEELS .
- Vent BRAKE SYSTEM .
- Perform either KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or KINEMATICS DIAGNOSIS SYSTEM WHEEL ALIGNMENT WITH RIDE HEIGHT MEASUREMENT WITHOUT LOADING THE VEHICLE .