33 31 503 Lowering/Raising Rear Axle Support

33 31 503 Lowering/Raising Rear Axle Support

Special tools required:







WARNING:
Failure to comply with the following instructions may result in the vehicle slipping off the vehicle hoist and critically injuring other persons.
Load the luggage compartment 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.







IMPORTANT: Before lowering/removing rear axle support:

Observe safety information for raising the vehicle

In order to avoid damage to vehicle hoist, perform weight compensation on vehicle.







NOTE: If the rear axle support is detached from the body, it is necessary after reinstallation to carry out a wheel/wheel alignment check.







Necessary preliminary tasks:
- Remove and tie back propeller shaft on rear axle final drive.
- Undo shock absorber on the left and right from the trailing arm.







IMPORTANT:
Risk of damage.
Brake hose must not be exposed to tensile loads.

Undo screws (1) on the left and right of the trailing arm and remove the holder.
Tightening torque 34 32 4AZ.







Disconnect the plug connection at the ride height sensor.







Position the support (1) at the rear of the rear axle support.
Position the support (2) in the bore at the front of the rear axle support.
Support rear axle support using workshop jack and special tool 31 5 250.

IMPORTANT:
The centre of gravity of the rear axle must be positioned centrally over the workshop jack.
Tie down rear axle support 33 5 206 to the special tool using a tensioning strap31 5 250.







Release screws (1).
Undo nuts (2) and remove compression strut.
Tightening torque 33 33 1AZ.
Slowly lower rear axle support.

Installation note:
Check threads for damage; if necessary, repair with Helicoil thread inserts.
Check seating of coil springs with spring pads, correct if necessary.







Installation note:
Check threaded bolts for damage and replace if necessary.
Tightening torque 33 33 2AZ.